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, 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_arp.h>
  22 #include <net/if.h>
  23 #include <netlink/genl/genl.h>
  24 #include <netlink/genl/family.h>
  25 #include <netlink/genl/ctrl.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 "radiotap.h"
  35 #include "radiotap_iter.h"
  36 #include "driver.h"
  37
  38 #ifdef CONFIG_LIBNL20
  39 /* libnl 2.0 compatibility code */
  40 #define nl_handle nl_sock
  41 #define nl_handle_alloc_cb nl_socket_alloc_cb
  42 #define nl_handle_destroy nl_socket_free
  43 #endif /* CONFIG_LIBNL20 */
  44
  45
  46 #ifndef IFF_LOWER_UP
  47 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  48 #endif
  49 #ifndef IFF_DORMANT
  50 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  51 #endif
  52
  53 #ifndef IF_OPER_DORMANT
  54 #define IF_OPER_DORMANT 5
  55 #endif
  56 #ifndef IF_OPER_UP
  57 #define IF_OPER_UP 6
  58 #endif
  59
  60 struct i802_bss {
  61         struct i802_bss *next;
  62         int ifindex;
  63         unsigned int beacon_set:1;
  64 };
  65
  66 struct wpa_driver_nl80211_data {
  67         void *ctx;
  68         struct netlink_data *netlink;
  69         int ioctl_sock; /* socket for ioctl() use */
  70         char ifname[IFNAMSIZ + 1];
  71         int ifindex;
  72         int if_removed;
  73         struct wpa_driver_capa capa;
  74         int has_capability;
  75
  76         int operstate;
  77
  78         int scan_complete_events;
  79
  80         struct nl_handle *nl_handle;
  81         struct nl_handle *nl_handle_event;
  82         struct nl_cache *nl_cache;
  83         struct nl_cache *nl_cache_event;
  84         struct nl_cb *nl_cb;
  85         struct genl_family *nl80211;
  86
  87         u8 auth_bssid[ETH_ALEN];
  88         u8 bssid[ETH_ALEN];
  89         int associated;
  90         u8 ssid[32];
  91         size_t ssid_len;
  92         int nlmode;
  93         int ap_scan_as_station;
  94         unsigned int assoc_freq;
  95
  96         int monitor_sock;
  97         int monitor_ifidx;
  98         int probe_req_report;
  99
 100         unsigned int beacon_set:1;
 101         unsigned int pending_remain_on_chan:1;
 102
 103         u64 remain_on_chan_cookie;
 104
 105 #ifdef HOSTAPD
 106         int eapol_sock; /* socket for EAPOL frames */
 107
 108         int default_if_indices[16];
 109         int *if_indices;
 110         int num_if_indices;
 111
 112         struct i802_bss bss;
 113
 114         int last_freq;
 115         int last_freq_ht;
 116 #endif /* HOSTAPD */
 117 };
 118
 119
 120 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 121                                             void *timeout_ctx);
 122 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 123 static int
 124 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 125 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 126                                    const u8 *addr, int cmd, u16 reason_code);
 127 static void nl80211_remove_monitor_interface(
 128         struct wpa_driver_nl80211_data *drv);
 129
 130 #ifdef HOSTAPD
 131 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 132 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 133 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
 134                                  int ifindex);
 135 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 136 static int wpa_driver_nl80211_if_remove(void *priv,
 137                                         enum wpa_driver_if_type type,
 138                                         const char *ifname);
 139 #endif /* HOSTAPD */
 140
 141 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 142                                                         void *timeout_ctx);
 143
 144
 145 /* nl80211 code */
 146 static int ack_handler(struct nl_msg *msg, void *arg)
 147 {
 148         int *err = arg;
 149         *err = 0;
 150         return NL_STOP;
 151 }
 152
 153 static int finish_handler(struct nl_msg *msg, void *arg)
 154 {
 155         int *ret = arg;
 156         *ret = 0;
 157         return NL_SKIP;
 158 }
 159
 160 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 161                          void *arg)
 162 {
 163         int *ret = arg;
 164         *ret = err->error;
 165         return NL_SKIP;
 166 }
 167
 168
 169 static int no_seq_check(struct nl_msg *msg, void *arg)
 170 {
 171         return NL_OK;
 172 }
 173
 174
 175 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 176                               struct nl_msg *msg,
 177                               int (*valid_handler)(struct nl_msg *, void *),
 178                               void *valid_data)
 179 {
 180         struct nl_cb *cb;
 181         int err = -ENOMEM;
 182
 183         cb = nl_cb_clone(drv->nl_cb);
 184         if (!cb)
 185                 goto out;
 186
 187         err = nl_send_auto_complete(drv->nl_handle, msg);
 188         if (err < 0)
 189                 goto out;
 190
 191         err = 1;
 192
 193         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 194         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 195         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 196
 197         if (valid_handler)
 198                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 199                           valid_handler, valid_data);
 200
 201         while (err > 0)
 202                 nl_recvmsgs(drv->nl_handle, cb);
 203  out:
 204         nl_cb_put(cb);
 205         nlmsg_free(msg);
 206         return err;
 207 }
 208
 209
 210 struct family_data {
 211         const char *group;
 212         int id;
 213 };
 214
 215
 216 static int family_handler(struct nl_msg *msg, void *arg)
 217 {
 218         struct family_data *res = arg;
 219         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 220         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 221         struct nlattr *mcgrp;
 222         int i;
 223
 224         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 225                   genlmsg_attrlen(gnlh, 0), NULL);
 226         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 227                 return NL_SKIP;
 228
 229         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 230                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 231                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 232                           nla_len(mcgrp), NULL);
 233                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 234                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 235                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 236                                res->group,
 237                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 238                         continue;
 239                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 240                 break;
 241         };
 242
 243         return NL_SKIP;
 244 }
 245
 246
 247 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 248                                const char *family, const char *group)
 249 {
 250         struct nl_msg *msg;
 251         int ret = -1;
 252         struct family_data res = { group, -ENOENT };
 253
 254         msg = nlmsg_alloc();
 255         if (!msg)
 256                 return -ENOMEM;
 257         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 258                     0, 0, CTRL_CMD_GETFAMILY, 0);
 259         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 260
 261         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 262         msg = NULL;
 263         if (ret == 0)
 264                 ret = res.id;
 265
 266 nla_put_failure:
 267         nlmsg_free(msg);
 268         return ret;
 269 }
 270
 271
 272 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 273                         const char *ifname, u8 *addr)
 274 {
 275         struct ifreq ifr;
 276
 277         os_memset(&ifr, 0, sizeof(ifr));
 278         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 279         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
 280                 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
 281                            ifname, errno, strerror(errno));
 282                 return -1;
 283         }
 284
 285         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
 286                 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
 287                            ifname, ifr.ifr_hwaddr.sa_family);
 288                 return -1;
 289         }
 290         os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
 291
 292         return 0;
 293 }
 294
 295
 296 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 297                         const char *ifname, const u8 *addr)
 298 {
 299         struct ifreq ifr;
 300
 301         os_memset(&ifr, 0, sizeof(ifr));
 302         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 303         os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
 304         ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
 305
 306         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
 307                 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
 308                            ifname, errno, strerror(errno));
 309                 return -1;
 310         }
 311
 312         return 0;
 313 }
 314
 315
 316 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 317 {
 318         struct wpa_driver_nl80211_data *drv = priv;
 319         if (!drv->associated)
 320                 return -1;
 321         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 322         return 0;
 323 }
 324
 325
 326 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 327 {
 328         struct wpa_driver_nl80211_data *drv = priv;
 329         if (!drv->associated)
 330                 return -1;
 331         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 332         return drv->ssid_len;
 333 }
 334
 335
 336 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 337                                           char *buf, size_t len, int del)
 338 {
 339         union wpa_event_data event;
 340
 341         os_memset(&event, 0, sizeof(event));
 342         if (len > sizeof(event.interface_status.ifname))
 343                 len = sizeof(event.interface_status.ifname) - 1;
 344         os_memcpy(event.interface_status.ifname, buf, len);
 345         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 346                 EVENT_INTERFACE_ADDED;
 347
 348         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 349                    del ? "DEL" : "NEW",
 350                    event.interface_status.ifname,
 351                    del ? "removed" : "added");
 352
 353         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 354                 if (del)
 355                         drv->if_removed = 1;
 356                 else
 357                         drv->if_removed = 0;
 358         }
 359
 360         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 361 }
 362
 363
 364 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 365                                          u8 *buf, size_t len)
 366 {
 367         int attrlen, rta_len;
 368         struct rtattr *attr;
 369
 370         attrlen = len;
 371         attr = (struct rtattr *) buf;
 372
 373         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 374         while (RTA_OK(attr, attrlen)) {
 375                 if (attr->rta_type == IFLA_IFNAME) {
 376                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 377                             == 0)
 378                                 return 1;
 379                         else
 380                                 break;
 381                 }
 382                 attr = RTA_NEXT(attr, attrlen);
 383         }
 384
 385         return 0;
 386 }
 387
 388
 389 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 390                                           int ifindex, u8 *buf, size_t len)
 391 {
 392         if (drv->ifindex == ifindex)
 393                 return 1;
 394
 395         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 396                 drv->ifindex = if_nametoindex(drv->ifname);
 397                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 398                            "interface");
 399                 wpa_driver_nl80211_finish_drv_init(drv);
 400                 return 1;
 401         }
 402
 403         return 0;
 404 }
 405
 406
 407 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 408                                                  struct ifinfomsg *ifi,
 409                                                  u8 *buf, size_t len)
 410 {
 411         struct wpa_driver_nl80211_data *drv = ctx;
 412         int attrlen, rta_len;
 413         struct rtattr *attr;
 414
 415         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 416                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 417                            ifi->ifi_index);
 418                 return;
 419         }
 420
 421         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 422                    "(%s%s%s%s)",
 423                    drv->operstate, ifi->ifi_flags,
 424                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 425                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 426                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 427                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 428         /*
 429          * Some drivers send the association event before the operup event--in
 430          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 431          * fails. This will hit us when wpa_supplicant does not need to do
 432          * IEEE 802.1X authentication
 433          */
 434         if (drv->operstate == 1 &&
 435             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 436             !(ifi->ifi_flags & IFF_RUNNING))
 437                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 438                                        -1, IF_OPER_UP);
 439
 440         attrlen = len;
 441         attr = (struct rtattr *) buf;
 442         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 443         while (RTA_OK(attr, attrlen)) {
 444                 if (attr->rta_type == IFLA_IFNAME) {
 445                         wpa_driver_nl80211_event_link(
 446                                 drv,
 447                                 ((char *) attr) + rta_len,
 448                                 attr->rta_len - rta_len, 0);
 449                 }
 450                 attr = RTA_NEXT(attr, attrlen);
 451         }
 452 }
 453
 454
 455 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 456                                                  struct ifinfomsg *ifi,
 457                                                  u8 *buf, size_t len)
 458 {
 459         struct wpa_driver_nl80211_data *drv = ctx;
 460         int attrlen, rta_len;
 461         struct rtattr *attr;
 462
 463         attrlen = len;
 464         attr = (struct rtattr *) buf;
 465
 466         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 467         while (RTA_OK(attr, attrlen)) {
 468                 if (attr->rta_type == IFLA_IFNAME) {
 469                         wpa_driver_nl80211_event_link(
 470                                 drv,
 471                                 ((char *) attr) + rta_len,
 472                                 attr->rta_len - rta_len, 1);
 473                 }
 474                 attr = RTA_NEXT(attr, attrlen);
 475         }
 476 }
 477
 478
 479 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 480                             const u8 *frame, size_t len)
 481 {
 482         const struct ieee80211_mgmt *mgmt;
 483         union wpa_event_data event;
 484
 485         mgmt = (const struct ieee80211_mgmt *) frame;
 486         if (len < 24 + sizeof(mgmt->u.auth)) {
 487                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 488                            "frame");
 489                 return;
 490         }
 491
 492         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 493         os_memset(&event, 0, sizeof(event));
 494         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 495         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 496         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 497         if (len > 24 + sizeof(mgmt->u.auth)) {
 498                 event.auth.ies = mgmt->u.auth.variable;
 499                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 500         }
 501
 502         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 503 }
 504
 505
 506 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 507                             const u8 *frame, size_t len)
 508 {
 509         const struct ieee80211_mgmt *mgmt;
 510         union wpa_event_data event;
 511         u16 status;
 512
 513         mgmt = (const struct ieee80211_mgmt *) frame;
 514         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 515                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 516                            "frame");
 517                 return;
 518         }
 519
 520         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 521         if (status != WLAN_STATUS_SUCCESS) {
 522                 os_memset(&event, 0, sizeof(event));
 523                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 524                         event.assoc_reject.resp_ies =
 525                                 (u8 *) mgmt->u.assoc_resp.variable;
 526                         event.assoc_reject.resp_ies_len =
 527                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 528                 }
 529                 event.assoc_reject.status_code = status;
 530
 531                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 532                 return;
 533         }
 534
 535         drv->associated = 1;
 536         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 537
 538         os_memset(&event, 0, sizeof(event));
 539         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 540                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 541                 event.assoc_info.resp_ies_len =
 542                         len - 24 - sizeof(mgmt->u.assoc_resp);
 543         }
 544
 545         event.assoc_info.freq = drv->assoc_freq;
 546
 547         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 548 }
 549
 550
 551 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 552                                enum nl80211_commands cmd, struct nlattr *status,
 553                                struct nlattr *addr, struct nlattr *req_ie,
 554                                struct nlattr *resp_ie)
 555 {
 556         union wpa_event_data event;
 557
 558         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 559                 /*
 560                  * Avoid reporting two association events that would confuse
 561                  * the core code.
 562                  */
 563                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 564                            "when using userspace SME", cmd);
 565                 return;
 566         }
 567
 568         os_memset(&event, 0, sizeof(event));
 569         if (cmd == NL80211_CMD_CONNECT &&
 570             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 571                 if (resp_ie) {
 572                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 573                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 574                 }
 575                 event.assoc_reject.status_code = nla_get_u16(status);
 576                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 577                 return;
 578         }
 579
 580         drv->associated = 1;
 581         if (addr)
 582                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 583
 584         if (req_ie) {
 585                 event.assoc_info.req_ies = nla_data(req_ie);
 586                 event.assoc_info.req_ies_len = nla_len(req_ie);
 587         }
 588         if (resp_ie) {
 589                 event.assoc_info.resp_ies = nla_data(resp_ie);
 590                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 591         }
 592
 593         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 594 }
 595
 596
 597 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 598                                enum nl80211_commands cmd, struct nlattr *addr)
 599 {
 600         union wpa_event_data event;
 601         enum wpa_event_type ev;
 602
 603         if (nla_len(addr) != ETH_ALEN)
 604                 return;
 605
 606         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 607                    cmd, MAC2STR((u8 *) nla_data(addr)));
 608
 609         if (cmd == NL80211_CMD_AUTHENTICATE)
 610                 ev = EVENT_AUTH_TIMED_OUT;
 611         else if (cmd == NL80211_CMD_ASSOCIATE)
 612                 ev = EVENT_ASSOC_TIMED_OUT;
 613         else
 614                 return;
 615
 616         os_memset(&event, 0, sizeof(event));
 617         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 618         wpa_supplicant_event(drv->ctx, ev, &event);
 619 }
 620
 621
 622 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 623                        enum nl80211_commands cmd, struct nlattr *frame,
 624                        struct nlattr *addr, struct nlattr *timed_out)
 625 {
 626         if (timed_out && addr) {
 627                 mlme_timeout_event(drv, cmd, addr);
 628                 return;
 629         }
 630
 631         if (frame == NULL) {
 632                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 633                            "data", cmd);
 634                 return;
 635         }
 636
 637         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 638         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 639                     nla_data(frame), nla_len(frame));
 640
 641         switch (cmd) {
 642         case NL80211_CMD_AUTHENTICATE:
 643                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 644                 break;
 645         case NL80211_CMD_ASSOCIATE:
 646                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 647                 break;
 648         case NL80211_CMD_DEAUTHENTICATE:
 649                 drv->associated = 0;
 650                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 651                 break;
 652         case NL80211_CMD_DISASSOCIATE:
 653                 drv->associated = 0;
 654                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 655                 break;
 656         default:
 657                 break;
 658         }
 659 }
 660
 661
 662 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 663                                            struct nlattr *tb[])
 664 {
 665         union wpa_event_data data;
 666
 667         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 668         os_memset(&data, 0, sizeof(data));
 669         if (tb[NL80211_ATTR_MAC]) {
 670                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 671                             nla_data(tb[NL80211_ATTR_MAC]),
 672                             nla_len(tb[NL80211_ATTR_MAC]));
 673                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 674         }
 675         if (tb[NL80211_ATTR_KEY_SEQ]) {
 676                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 677                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 678                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 679         }
 680         if (tb[NL80211_ATTR_KEY_TYPE]) {
 681                 enum nl80211_key_type key_type =
 682                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 683                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 684                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 685                         data.michael_mic_failure.unicast = 1;
 686         } else
 687                 data.michael_mic_failure.unicast = 1;
 688
 689         if (tb[NL80211_ATTR_KEY_IDX]) {
 690                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 691                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 692         }
 693
 694         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 695 }
 696
 697
 698 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 699                                  struct nlattr *tb[])
 700 {
 701         if (tb[NL80211_ATTR_MAC] == NULL) {
 702                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 703                            "event");
 704                 return;
 705         }
 706         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 707         drv->associated = 1;
 708         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 709                    MAC2STR(drv->bssid));
 710
 711         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 712 }
 713
 714
 715 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 716                                          int cancel_event, struct nlattr *tb[])
 717 {
 718         unsigned int freq, chan_type, duration;
 719         union wpa_event_data data;
 720         u64 cookie;
 721
 722         if (tb[NL80211_ATTR_WIPHY_FREQ])
 723                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 724         else
 725                 freq = 0;
 726
 727         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 728                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 729         else
 730                 chan_type = 0;
 731
 732         if (tb[NL80211_ATTR_DURATION])
 733                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 734         else
 735                 duration = 0;
 736
 737         if (tb[NL80211_ATTR_COOKIE])
 738                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 739         else
 740                 cookie = 0;
 741
 742         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 743                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 744                    cancel_event, freq, chan_type, duration,
 745                    (long long unsigned int) cookie,
 746                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 747
 748         if (cookie != drv->remain_on_chan_cookie)
 749                 return; /* not for us */
 750
 751         drv->pending_remain_on_chan = !cancel_event;
 752
 753         os_memset(&data, 0, sizeof(data));
 754         data.remain_on_channel.freq = freq;
 755         data.remain_on_channel.duration = duration;
 756         wpa_supplicant_event(drv->ctx, cancel_event ?
 757                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 758                              EVENT_REMAIN_ON_CHANNEL, &data);
 759 }
 760
 761
 762 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 763                             struct nlattr *tb[])
 764 {
 765         union wpa_event_data event;
 766         struct nlattr *nl;
 767         int rem;
 768         struct scan_info *info;
 769 #define MAX_REPORT_FREQS 50
 770         int freqs[MAX_REPORT_FREQS];
 771         int num_freqs = 0;
 772
 773         os_memset(&event, 0, sizeof(event));
 774         info = &event.scan_info;
 775         info->aborted = aborted;
 776
 777         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 778                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 779                         struct wpa_driver_scan_ssid *s =
 780                                 &info->ssids[info->num_ssids];
 781                         s->ssid = nla_data(nl);
 782                         s->ssid_len = nla_len(nl);
 783                         info->num_ssids++;
 784                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 785                                 break;
 786                 }
 787         }
 788         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 789                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 790                 {
 791                         freqs[num_freqs] = nla_get_u32(nl);
 792                         num_freqs++;
 793                         if (num_freqs == MAX_REPORT_FREQS - 1)
 794                                 break;
 795                 }
 796                 info->freqs = freqs;
 797                 info->num_freqs = num_freqs;
 798         }
 799         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 800 }
 801
 802
 803 static int process_event(struct nl_msg *msg, void *arg)
 804 {
 805         struct wpa_driver_nl80211_data *drv = arg;
 806         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 807         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 808
 809         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 810                   genlmsg_attrlen(gnlh, 0), NULL);
 811
 812         if (tb[NL80211_ATTR_IFINDEX]) {
 813                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 814                 if (ifindex != drv->ifindex) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 816                                    " for foreign interface (ifindex %d)",
 817                                    gnlh->cmd, ifindex);
 818                         return NL_SKIP;
 819                 }
 820         }
 821
 822         if (drv->ap_scan_as_station &&
 823             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 824              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 825                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
 826                 drv->ap_scan_as_station = 0;
 827         }
 828
 829         switch (gnlh->cmd) {
 830         case NL80211_CMD_TRIGGER_SCAN:
 831                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 832                 break;
 833         case NL80211_CMD_NEW_SCAN_RESULTS:
 834                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 835                 drv->scan_complete_events = 1;
 836                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 837                                      drv->ctx);
 838                 send_scan_event(drv, 0, tb);
 839                 break;
 840         case NL80211_CMD_SCAN_ABORTED:
 841                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 842                 /*
 843                  * Need to indicate that scan results are available in order
 844                  * not to make wpa_supplicant stop its scanning.
 845                  */
 846                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 847                                      drv->ctx);
 848                 send_scan_event(drv, 1, tb);
 849                 break;
 850         case NL80211_CMD_AUTHENTICATE:
 851         case NL80211_CMD_ASSOCIATE:
 852         case NL80211_CMD_DEAUTHENTICATE:
 853         case NL80211_CMD_DISASSOCIATE:
 854                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 855                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
 856                 break;
 857         case NL80211_CMD_CONNECT:
 858         case NL80211_CMD_ROAM:
 859                 mlme_event_connect(drv, gnlh->cmd,
 860                                    tb[NL80211_ATTR_STATUS_CODE],
 861                                    tb[NL80211_ATTR_MAC],
 862                                    tb[NL80211_ATTR_REQ_IE],
 863                                    tb[NL80211_ATTR_RESP_IE]);
 864                 break;
 865         case NL80211_CMD_DISCONNECT:
 866                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 867                         /*
 868                          * Avoid reporting two disassociation events that could
 869                          * confuse the core code.
 870                          */
 871                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 872                                    "event when using userspace SME");
 873                         break;
 874                 }
 875                 drv->associated = 0;
 876                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 877                 break;
 878         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 879                 mlme_event_michael_mic_failure(drv, tb);
 880                 break;
 881         case NL80211_CMD_JOIN_IBSS:
 882                 mlme_event_join_ibss(drv, tb);
 883                 break;
 884         case NL80211_CMD_REMAIN_ON_CHANNEL:
 885                 mlme_event_remain_on_channel(drv, 0, tb);
 886                 break;
 887         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
 888                 mlme_event_remain_on_channel(drv, 1, tb);
 889                 break;
 890         default:
 891                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 892                            "(cmd=%d)", gnlh->cmd);
 893                 break;
 894         }
 895
 896         return NL_SKIP;
 897 }
 898
 899
 900 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 901                                              void *sock_ctx)
 902 {
 903         struct nl_cb *cb;
 904         struct wpa_driver_nl80211_data *drv = eloop_ctx;
 905
 906         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
 907
 908         cb = nl_cb_clone(drv->nl_cb);
 909         if (!cb)
 910                 return;
 911         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 912         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
 913         nl_recvmsgs(drv->nl_handle_event, cb);
 914         nl_cb_put(cb);
 915 }
 916
 917
 918 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
 919                                    const char *ifname, int dev_up)
 920 {
 921         struct ifreq ifr;
 922
 923         if (drv->ioctl_sock < 0)
 924                 return -1;
 925
 926         os_memset(&ifr, 0, sizeof(ifr));
 927         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 928
 929         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 930                 perror("ioctl[SIOCGIFFLAGS]");
 931                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 932                            ifname);
 933                 return -1;
 934         }
 935
 936         if (dev_up) {
 937                 if (ifr.ifr_flags & IFF_UP)
 938                         return 0;
 939                 ifr.ifr_flags |= IFF_UP;
 940         } else {
 941                 if (!(ifr.ifr_flags & IFF_UP))
 942                         return 0;
 943                 ifr.ifr_flags &= ~IFF_UP;
 944         }
 945
 946         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 947                 perror("ioctl[SIOCSIFFLAGS]");
 948                 return -1;
 949         }
 950
 951         return 0;
 952 }
 953
 954
 955 /**
 956  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
 957  * @priv: driver_nl80211 private data
 958  * @alpha2_arg: country to which to switch to
 959  * Returns: 0 on success, -1 on failure
 960  *
 961  * This asks nl80211 to set the regulatory domain for given
 962  * country ISO / IEC alpha2.
 963  */
 964 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
 965 {
 966         struct wpa_driver_nl80211_data *drv = priv;
 967         char alpha2[3];
 968         struct nl_msg *msg;
 969
 970         msg = nlmsg_alloc();
 971         if (!msg)
 972                 return -ENOMEM;
 973
 974         alpha2[0] = alpha2_arg[0];
 975         alpha2[1] = alpha2_arg[1];
 976         alpha2[2] = '\0';
 977
 978         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 979                     0, NL80211_CMD_REQ_SET_REG, 0);
 980
 981         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
 982         if (send_and_recv_msgs(drv, msg, NULL, NULL))
 983                 return -EINVAL;
 984         return 0;
 985 nla_put_failure:
 986         return -EINVAL;
 987 }
 988
 989
 990 #ifndef HOSTAPD
 991 struct wiphy_info_data {
 992         int max_scan_ssids;
 993         int ap_supported;
 994         int auth_supported;
 995         int connect_supported;
 996 };
 997
 998
 999 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1000 {
1001         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1002         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1003         struct wiphy_info_data *info = arg;
1004
1005         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1006                   genlmsg_attrlen(gnlh, 0), NULL);
1007
1008         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1009                 info->max_scan_ssids =
1010                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1011
1012         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1013                 struct nlattr *nl_mode;
1014                 int i;
1015                 nla_for_each_nested(nl_mode,
1016                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1017                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1018                                 info->ap_supported = 1;
1019                                 break;
1020                         }
1021                 }
1022         }
1023
1024         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1025                 struct nlattr *nl_cmd;
1026                 int i;
1027
1028                 nla_for_each_nested(nl_cmd,
1029                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1030                         u32 cmd = nla_get_u32(nl_cmd);
1031                         if (cmd == NL80211_CMD_AUTHENTICATE)
1032                                 info->auth_supported = 1;
1033                         else if (cmd == NL80211_CMD_CONNECT)
1034                                 info->connect_supported = 1;
1035                 }
1036         }
1037
1038         return NL_SKIP;
1039 }
1040
1041
1042 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1043                                        struct wiphy_info_data *info)
1044 {
1045         struct nl_msg *msg;
1046
1047         os_memset(info, 0, sizeof(*info));
1048         msg = nlmsg_alloc();
1049         if (!msg)
1050                 return -1;
1051
1052         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1053                     0, NL80211_CMD_GET_WIPHY, 0);
1054
1055         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1056
1057         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1058                 return 0;
1059         msg = NULL;
1060 nla_put_failure:
1061         nlmsg_free(msg);
1062         return -1;
1063 }
1064
1065
1066 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1067 {
1068         struct wiphy_info_data info;
1069         if (wpa_driver_nl80211_get_info(drv, &info))
1070                 return -1;
1071         drv->has_capability = 1;
1072         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1073         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1074                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1075                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1076                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1077         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1078                 WPA_DRIVER_CAPA_ENC_WEP104 |
1079                 WPA_DRIVER_CAPA_ENC_TKIP |
1080                 WPA_DRIVER_CAPA_ENC_CCMP;
1081         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1082                 WPA_DRIVER_AUTH_SHARED |
1083                 WPA_DRIVER_AUTH_LEAP;
1084
1085         drv->capa.max_scan_ssids = info.max_scan_ssids;
1086         if (info.ap_supported)
1087                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1088
1089         if (info.auth_supported)
1090                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1091         else if (!info.connect_supported) {
1092                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1093                            "authentication/association or connect commands");
1094                 return -1;
1095         }
1096
1097         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1098
1099         return 0;
1100 }
1101 #endif /* HOSTAPD */
1102
1103
1104 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1105                                       void *ctx)
1106 {
1107         int ret;
1108
1109         /* Initialize generic netlink and nl80211 */
1110
1111         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1112         if (drv->nl_cb == NULL) {
1113                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1114                            "callbacks");
1115                 goto err1;
1116         }
1117
1118         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1119         if (drv->nl_handle == NULL) {
1120                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1121                            "callbacks");
1122                 goto err2;
1123         }
1124
1125         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1126         if (drv->nl_handle_event == NULL) {
1127                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1128                            "callbacks (event)");
1129                 goto err2b;
1130         }
1131
1132         if (genl_connect(drv->nl_handle)) {
1133                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1134                            "netlink");
1135                 goto err3;
1136         }
1137
1138         if (genl_connect(drv->nl_handle_event)) {
1139                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1140                            "netlink (event)");
1141                 goto err3;
1142         }
1143
1144 #ifdef CONFIG_LIBNL20
1145         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1146                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1147                            "netlink cache");
1148                 goto err3;
1149         }
1150         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1151             0) {
1152                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1153                            "netlink cache (event)");
1154                 goto err3b;
1155         }
1156 #else /* CONFIG_LIBNL20 */
1157         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1158         if (drv->nl_cache == NULL) {
1159                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1160                            "netlink cache");
1161                 goto err3;
1162         }
1163         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1164         if (drv->nl_cache_event == NULL) {
1165                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1166                            "netlink cache (event)");
1167                 goto err3b;
1168         }
1169 #endif /* CONFIG_LIBNL20 */
1170
1171         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1172         if (drv->nl80211 == NULL) {
1173                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1174                            "found");
1175                 goto err4;
1176         }
1177
1178         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1179         if (ret >= 0)
1180                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1181         if (ret < 0) {
1182                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1183                            "membership for scan events: %d (%s)",
1184                            ret, strerror(-ret));
1185                 goto err4;
1186         }
1187
1188         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1189         if (ret >= 0)
1190                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1191         if (ret < 0) {
1192                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1193                            "membership for mlme events: %d (%s)",
1194                            ret, strerror(-ret));
1195                 goto err4;
1196         }
1197
1198         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1199                                  wpa_driver_nl80211_event_receive, drv, ctx);
1200
1201         return 0;
1202
1203 err4:
1204         nl_cache_free(drv->nl_cache_event);
1205 err3b:
1206         nl_cache_free(drv->nl_cache);
1207 err3:
1208         nl_handle_destroy(drv->nl_handle_event);
1209 err2b:
1210         nl_handle_destroy(drv->nl_handle);
1211 err2:
1212         nl_cb_put(drv->nl_cb);
1213 err1:
1214         return -1;
1215 }
1216
1217
1218 /**
1219  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1220  * @ctx: context to be used when calling wpa_supplicant functions,
1221  * e.g., wpa_supplicant_event()
1222  * @ifname: interface name, e.g., wlan0
1223  * Returns: Pointer to private data, %NULL on failure
1224  */
1225 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1226 {
1227         struct wpa_driver_nl80211_data *drv;
1228         struct netlink_config *cfg;
1229
1230         drv = os_zalloc(sizeof(*drv));
1231         if (drv == NULL)
1232                 return NULL;
1233         drv->ctx = ctx;
1234         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1235         drv->monitor_ifidx = -1;
1236         drv->monitor_sock = -1;
1237         drv->ioctl_sock = -1;
1238
1239         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1240                 os_free(drv);
1241                 return NULL;
1242         }
1243
1244         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1245         if (drv->ioctl_sock < 0) {
1246                 perror("socket(PF_INET,SOCK_DGRAM)");
1247                 goto failed;
1248         }
1249
1250         cfg = os_zalloc(sizeof(*cfg));
1251         if (cfg == NULL)
1252                 goto failed;
1253         cfg->ctx = drv;
1254         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1255         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1256         drv->netlink = netlink_init(cfg);
1257         if (drv->netlink == NULL) {
1258                 os_free(cfg);
1259                 goto failed;
1260         }
1261         if (wpa_driver_nl80211_finish_drv_init(drv))
1262                 goto failed;
1263
1264         return drv;
1265
1266 failed:
1267         netlink_deinit(drv->netlink);
1268         if (drv->ioctl_sock >= 0)
1269                 close(drv->ioctl_sock);
1270
1271         genl_family_put(drv->nl80211);
1272         nl_cache_free(drv->nl_cache);
1273         nl_handle_destroy(drv->nl_handle);
1274         nl_cb_put(drv->nl_cb);
1275
1276         os_free(drv);
1277         return NULL;
1278 }
1279
1280
1281 static int
1282 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1283 {
1284         drv->ifindex = if_nametoindex(drv->ifname);
1285
1286 #ifndef HOSTAPD
1287         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1288                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1289                            "use managed mode");
1290         }
1291
1292         if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1293                 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1294                            "UP", drv->ifname);
1295                 return -1;
1296         }
1297
1298         if (wpa_driver_nl80211_capa(drv))
1299                 return -1;
1300
1301         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1302                                1, IF_OPER_DORMANT);
1303 #endif /* HOSTAPD */
1304
1305         return 0;
1306 }
1307
1308
1309 #ifdef HOSTAPD
1310 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1311 {
1312         struct i802_bss *bss, *prev;
1313         bss = drv->bss.next;
1314         while (bss) {
1315                 prev = bss;
1316                 bss = bss->next;
1317                 os_free(bss);
1318         }
1319 }
1320 #endif /* HOSTAPD */
1321
1322
1323 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1324 {
1325         struct nl_msg *msg;
1326
1327         msg = nlmsg_alloc();
1328         if (!msg)
1329                 return -ENOMEM;
1330
1331         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1332                     0, NL80211_CMD_DEL_BEACON, 0);
1333         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1334
1335         return send_and_recv_msgs(drv, msg, NULL, NULL);
1336  nla_put_failure:
1337         return -ENOBUFS;
1338 }
1339
1340
1341 /**
1342  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1343  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1344  *
1345  * Shut down driver interface and processing of driver events. Free
1346  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1347  */
1348 static void wpa_driver_nl80211_deinit(void *priv)
1349 {
1350         struct wpa_driver_nl80211_data *drv = priv;
1351
1352         nl80211_remove_monitor_interface(drv);
1353
1354         if (drv->nlmode == NL80211_IFTYPE_AP)
1355                 wpa_driver_nl80211_del_beacon(drv);
1356
1357 #ifdef HOSTAPD
1358         if (drv->last_freq_ht) {
1359                 /* Clear HT flags from the driver */
1360                 struct hostapd_freq_params freq;
1361                 os_memset(&freq, 0, sizeof(freq));
1362                 freq.freq = drv->last_freq;
1363                 i802_set_freq(priv, &freq);
1364         }
1365
1366         if (drv->eapol_sock >= 0) {
1367                 eloop_unregister_read_sock(drv->eapol_sock);
1368                 close(drv->eapol_sock);
1369         }
1370
1371         if (drv->if_indices != drv->default_if_indices)
1372                 os_free(drv->if_indices);
1373
1374         wpa_driver_nl80211_free_bss(drv);
1375 #endif /* HOSTAPD */
1376
1377         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1378         netlink_deinit(drv->netlink);
1379
1380         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1381
1382         (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1383         wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1384
1385         if (drv->ioctl_sock >= 0)
1386                 close(drv->ioctl_sock);
1387
1388         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1389         genl_family_put(drv->nl80211);
1390         nl_cache_free(drv->nl_cache);
1391         nl_cache_free(drv->nl_cache_event);
1392         nl_handle_destroy(drv->nl_handle);
1393         nl_handle_destroy(drv->nl_handle_event);
1394         nl_cb_put(drv->nl_cb);
1395
1396         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1397                              drv, NULL);
1398
1399         os_free(drv);
1400 }
1401
1402
1403 /**
1404  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1405  * @eloop_ctx: Driver private data
1406  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1407  *
1408  * This function can be used as registered timeout when starting a scan to
1409  * generate a scan completed event if the driver does not report this.
1410  */
1411 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1412 {
1413         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1414         if (drv->ap_scan_as_station) {
1415                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1416                 drv->ap_scan_as_station = 0;
1417         }
1418         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1419         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1420 }
1421
1422
1423 /**
1424  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1425  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1426  * @params: Scan parameters
1427  * Returns: 0 on success, -1 on failure
1428  */
1429 static int wpa_driver_nl80211_scan(void *priv,
1430                                    struct wpa_driver_scan_params *params)
1431 {
1432         struct wpa_driver_nl80211_data *drv = priv;
1433         int ret = 0, timeout;
1434         struct nl_msg *msg, *ssids, *freqs;
1435         size_t i;
1436
1437         msg = nlmsg_alloc();
1438         ssids = nlmsg_alloc();
1439         freqs = nlmsg_alloc();
1440         if (!msg || !ssids || !freqs) {
1441                 nlmsg_free(msg);
1442                 nlmsg_free(ssids);
1443                 nlmsg_free(freqs);
1444                 return -1;
1445         }
1446
1447         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1448                     NL80211_CMD_TRIGGER_SCAN, 0);
1449
1450         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1451
1452         for (i = 0; i < params->num_ssids; i++) {
1453                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1454                         params->ssids[i].ssid);
1455         }
1456         if (params->num_ssids)
1457                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1458
1459         if (params->extra_ies) {
1460                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1461                         params->extra_ies);
1462         }
1463
1464         if (params->freqs) {
1465                 for (i = 0; params->freqs[i]; i++)
1466                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1467                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1468         }
1469
1470         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1471         msg = NULL;
1472         if (ret) {
1473                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1474                            "(%s)", ret, strerror(-ret));
1475 #ifdef HOSTAPD
1476                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1477                         /*
1478                          * mac80211 does not allow scan requests in AP mode, so
1479                          * try to do this in station mode.
1480                          */
1481                         if (wpa_driver_nl80211_set_mode(drv,
1482                                                         IEEE80211_MODE_INFRA))
1483                                 goto nla_put_failure;
1484
1485                         if (wpa_driver_nl80211_scan(drv, params)) {
1486                                 wpa_driver_nl80211_set_mode(drv,
1487                                                             IEEE80211_MODE_AP);
1488                                 goto nla_put_failure;
1489                         }
1490
1491                         /* Restore AP mode when processing scan results */
1492                         drv->ap_scan_as_station = 1;
1493                         ret = 0;
1494                 } else
1495                         goto nla_put_failure;
1496 #else /* HOSTAPD */
1497                 goto nla_put_failure;
1498 #endif /* HOSTAPD */
1499         }
1500
1501         /* Not all drivers generate "scan completed" wireless event, so try to
1502          * read results after a timeout. */
1503         timeout = 10;
1504         if (drv->scan_complete_events) {
1505                 /*
1506                  * The driver seems to deliver events to notify when scan is
1507                  * complete, so use longer timeout to avoid race conditions
1508                  * with scanning and following association request.
1509                  */
1510                 timeout = 30;
1511         }
1512         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1513                    "seconds", ret, timeout);
1514         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1515         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1516                                drv, drv->ctx);
1517
1518 nla_put_failure:
1519         nlmsg_free(ssids);
1520         nlmsg_free(msg);
1521         nlmsg_free(freqs);
1522         return ret;
1523 }
1524
1525
1526 static int bss_info_handler(struct nl_msg *msg, void *arg)
1527 {
1528         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1529         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1530         struct nlattr *bss[NL80211_BSS_MAX + 1];
1531         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1532                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1533                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1534                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1535                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1536                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1537                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1538                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1539                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1540                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1541                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1542         };
1543         struct wpa_scan_results *res = arg;
1544         struct wpa_scan_res **tmp;
1545         struct wpa_scan_res *r;
1546         const u8 *ie;
1547         size_t ie_len;
1548
1549         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1550                   genlmsg_attrlen(gnlh, 0), NULL);
1551         if (!tb[NL80211_ATTR_BSS])
1552                 return NL_SKIP;
1553         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1554                              bss_policy))
1555                 return NL_SKIP;
1556         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1557                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1558                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1559         } else {
1560                 ie = NULL;
1561                 ie_len = 0;
1562         }
1563
1564         r = os_zalloc(sizeof(*r) + ie_len);
1565         if (r == NULL)
1566                 return NL_SKIP;
1567         if (bss[NL80211_BSS_BSSID])
1568                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1569                           ETH_ALEN);
1570         if (bss[NL80211_BSS_FREQUENCY])
1571                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1572         if (bss[NL80211_BSS_BEACON_INTERVAL])
1573                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1574         if (bss[NL80211_BSS_CAPABILITY])
1575                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1576         r->flags |= WPA_SCAN_NOISE_INVALID;
1577         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1578                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1579                 r->level /= 100; /* mBm to dBm */
1580                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1581         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1582                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1583                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1584         } else
1585                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1586         if (bss[NL80211_BSS_TSF])
1587                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1588         if (bss[NL80211_BSS_SEEN_MS_AGO])
1589                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1590         r->ie_len = ie_len;
1591         if (ie)
1592                 os_memcpy(r + 1, ie, ie_len);
1593
1594         if (bss[NL80211_BSS_STATUS]) {
1595                 enum nl80211_bss_status status;
1596                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1597                 switch (status) {
1598                 case NL80211_BSS_STATUS_AUTHENTICATED:
1599                         r->flags |= WPA_SCAN_AUTHENTICATED;
1600                         break;
1601                 case NL80211_BSS_STATUS_ASSOCIATED:
1602                         r->flags |= WPA_SCAN_ASSOCIATED;
1603                         break;
1604                 default:
1605                         break;
1606                 }
1607         }
1608
1609         tmp = os_realloc(res->res,
1610                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1611         if (tmp == NULL) {
1612                 os_free(r);
1613                 return NL_SKIP;
1614         }
1615         tmp[res->num++] = r;
1616         res->res = tmp;
1617
1618         return NL_SKIP;
1619 }
1620
1621
1622 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1623                                  const u8 *addr)
1624 {
1625         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1626                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1627                            "mismatch");
1628                 wpa_driver_nl80211_mlme(drv, addr,
1629                                         NL80211_CMD_DEAUTHENTICATE,
1630                                         WLAN_REASON_PREV_AUTH_NOT_VALID);
1631         }
1632 }
1633
1634
1635 static void wpa_driver_nl80211_check_bss_status(
1636         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1637 {
1638         size_t i;
1639
1640         for (i = 0; i < res->num; i++) {
1641                 struct wpa_scan_res *r = res->res[i];
1642                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1643                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1644                                    "indicates BSS status with " MACSTR
1645                                    " as authenticated",
1646                                    MAC2STR(r->bssid));
1647                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1648                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1649                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1650                             0) {
1651                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1652                                            " in local state (auth=" MACSTR
1653                                            " assoc=" MACSTR ")",
1654                                            MAC2STR(drv->auth_bssid),
1655                                            MAC2STR(drv->bssid));
1656                         }
1657                 }
1658
1659                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1660                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1661                                    "indicate BSS status with " MACSTR
1662                                    " as associated",
1663                                    MAC2STR(r->bssid));
1664                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1665                             !drv->associated) {
1666                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1667                                            "(not associated) does not match "
1668                                            "with BSS state");
1669                                 clear_state_mismatch(drv, r->bssid);
1670                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1671                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1672                                    0) {
1673                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1674                                            "(associated with " MACSTR ") does "
1675                                            "not match with BSS state",
1676                                            MAC2STR(drv->bssid));
1677                                 clear_state_mismatch(drv, r->bssid);
1678                                 clear_state_mismatch(drv, drv->bssid);
1679                         }
1680                 }
1681         }
1682 }
1683
1684
1685 static void wpa_scan_results_free(struct wpa_scan_results *res)
1686 {
1687         size_t i;
1688
1689         if (res == NULL)
1690                 return;
1691
1692         for (i = 0; i < res->num; i++)
1693                 os_free(res->res[i]);
1694         os_free(res->res);
1695         os_free(res);
1696 }
1697
1698
1699 /**
1700  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1701  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1702  * Returns: Scan results on success, -1 on failure
1703  */
1704 static struct wpa_scan_results *
1705 wpa_driver_nl80211_get_scan_results(void *priv)
1706 {
1707         struct wpa_driver_nl80211_data *drv = priv;
1708         struct nl_msg *msg;
1709         struct wpa_scan_results *res;
1710         int ret;
1711
1712         res = os_zalloc(sizeof(*res));
1713         if (res == NULL)
1714                 return NULL;
1715         msg = nlmsg_alloc();
1716         if (!msg)
1717                 goto nla_put_failure;
1718
1719         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1720                     NL80211_CMD_GET_SCAN, 0);
1721         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1722
1723         ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1724         msg = NULL;
1725         if (ret == 0) {
1726                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1727                            (unsigned long) res->num);
1728                 wpa_driver_nl80211_check_bss_status(drv, res);
1729                 return res;
1730         }
1731         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1732                    "(%s)", ret, strerror(-ret));
1733 nla_put_failure:
1734         nlmsg_free(msg);
1735         wpa_scan_results_free(res);
1736         return NULL;
1737 }
1738
1739
1740 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1741                                       enum wpa_alg alg, const u8 *addr,
1742                                       int key_idx, int set_tx,
1743                                       const u8 *seq, size_t seq_len,
1744                                       const u8 *key, size_t key_len)
1745 {
1746         struct wpa_driver_nl80211_data *drv = priv;
1747         int ifindex = if_nametoindex(ifname);
1748         struct nl_msg *msg;
1749         int ret;
1750
1751         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1752                    "set_tx=%d seq_len=%lu key_len=%lu",
1753                    __func__, ifindex, alg, addr, key_idx, set_tx,
1754                    (unsigned long) seq_len, (unsigned long) key_len);
1755
1756         msg = nlmsg_alloc();
1757         if (!msg)
1758                 return -ENOMEM;
1759
1760         if (alg == WPA_ALG_NONE) {
1761                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1762                             0, NL80211_CMD_DEL_KEY, 0);
1763         } else {
1764                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1765                             0, NL80211_CMD_NEW_KEY, 0);
1766                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1767                 switch (alg) {
1768                 case WPA_ALG_WEP:
1769                         if (key_len == 5)
1770                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1771                                             WLAN_CIPHER_SUITE_WEP40);
1772                         else
1773                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1774                                             WLAN_CIPHER_SUITE_WEP104);
1775                         break;
1776                 case WPA_ALG_TKIP:
1777                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1778                                     WLAN_CIPHER_SUITE_TKIP);
1779                         break;
1780                 case WPA_ALG_CCMP:
1781                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1782                                     WLAN_CIPHER_SUITE_CCMP);
1783                         break;
1784                 case WPA_ALG_IGTK:
1785                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1786                                     WLAN_CIPHER_SUITE_AES_CMAC);
1787                         break;
1788                 default:
1789                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1790                                    "algorithm %d", __func__, alg);
1791                         nlmsg_free(msg);
1792                         return -1;
1793                 }
1794         }
1795
1796         if (seq && seq_len)
1797                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1798
1799         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1800         {
1801                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
1802                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1803         }
1804         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1805         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1806
1807         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1808         if (ret == -ENOENT && alg == WPA_ALG_NONE)
1809                 ret = 0;
1810         if (ret)
1811                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1812                            ret, strerror(-ret));
1813
1814         /*
1815          * If we failed or don't need to set the default TX key (below),
1816          * we're done here.
1817          */
1818         if (ret || !set_tx || alg == WPA_ALG_NONE)
1819                 return ret;
1820 #ifdef HOSTAPD /* FIX: is this needed? */
1821         if (addr)
1822                 return ret;
1823 #endif /* HOSTAPD */
1824
1825         msg = nlmsg_alloc();
1826         if (!msg)
1827                 return -ENOMEM;
1828
1829         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1830                     0, NL80211_CMD_SET_KEY, 0);
1831         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1832         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1833         if (alg == WPA_ALG_IGTK)
1834                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1835         else
1836                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1837
1838         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1839         if (ret == -ENOENT)
1840                 ret = 0;
1841         if (ret)
1842                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1843                            "err=%d %s)", ret, strerror(-ret));
1844         return ret;
1845
1846 nla_put_failure:
1847         return -ENOBUFS;
1848 }
1849
1850
1851 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
1852                       int key_idx, int defkey,
1853                       const u8 *seq, size_t seq_len,
1854                       const u8 *key, size_t key_len)
1855 {
1856         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1857         if (!key_attr)
1858                 return -1;
1859
1860         if (defkey && alg == WPA_ALG_IGTK)
1861                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1862         else if (defkey)
1863                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1864
1865         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1866
1867         switch (alg) {
1868         case WPA_ALG_WEP:
1869                 if (key_len == 5)
1870                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1871                                     WLAN_CIPHER_SUITE_WEP40);
1872                 else
1873                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1874                                     WLAN_CIPHER_SUITE_WEP104);
1875                 break;
1876         case WPA_ALG_TKIP:
1877                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1878                 break;
1879         case WPA_ALG_CCMP:
1880                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1881                 break;
1882         case WPA_ALG_IGTK:
1883                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1884                             WLAN_CIPHER_SUITE_AES_CMAC);
1885                 break;
1886         default:
1887                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1888                            "algorithm %d", __func__, alg);
1889                 return -1;
1890         }
1891
1892         if (seq && seq_len)
1893                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1894
1895         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1896
1897         nla_nest_end(msg, key_attr);
1898
1899         return 0;
1900  nla_put_failure:
1901         return -1;
1902 }
1903
1904
1905 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1906                                  struct nl_msg *msg)
1907 {
1908         int i, privacy = 0;
1909         struct nlattr *nl_keys, *nl_key;
1910
1911         for (i = 0; i < 4; i++) {
1912                 if (!params->wep_key[i])
1913                         continue;
1914                 privacy = 1;
1915                 break;
1916         }
1917         if (!privacy)
1918                 return 0;
1919
1920         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1921
1922         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1923         if (!nl_keys)
1924                 goto nla_put_failure;
1925
1926         for (i = 0; i < 4; i++) {
1927                 if (!params->wep_key[i])
1928                         continue;
1929
1930                 nl_key = nla_nest_start(msg, i);
1931                 if (!nl_key)
1932                         goto nla_put_failure;
1933
1934                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1935                         params->wep_key[i]);
1936                 if (params->wep_key_len[i] == 5)
1937                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1938                                     WLAN_CIPHER_SUITE_WEP40);
1939                 else
1940                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1941                                     WLAN_CIPHER_SUITE_WEP104);
1942
1943                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1944
1945                 if (i == params->wep_tx_keyidx)
1946                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1947
1948                 nla_nest_end(msg, nl_key);
1949         }
1950         nla_nest_end(msg, nl_keys);
1951
1952         return 0;
1953
1954 nla_put_failure:
1955         return -ENOBUFS;
1956 }
1957
1958
1959 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1960                                    const u8 *addr, int cmd, u16 reason_code)
1961 {
1962         int ret = -1;
1963         struct nl_msg *msg;
1964
1965         msg = nlmsg_alloc();
1966         if (!msg)
1967                 return -1;
1968
1969         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1970
1971         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1972         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1973         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1974
1975         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1976         msg = NULL;
1977         if (ret) {
1978                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1979                            "(%s)", ret, strerror(-ret));
1980                 goto nla_put_failure;
1981         }
1982         ret = 0;
1983
1984 nla_put_failure:
1985         nlmsg_free(msg);
1986         return ret;
1987 }
1988
1989
1990 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1991                                          const u8 *addr, int reason_code)
1992 {
1993         wpa_printf(MSG_DEBUG, "%s", __func__);
1994         drv->associated = 0;
1995         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1996                                        reason_code);
1997 }
1998
1999
2000 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2001                                              int reason_code)
2002 {
2003         struct wpa_driver_nl80211_data *drv = priv;
2004         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2005                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2006         wpa_printf(MSG_DEBUG, "%s", __func__);
2007         drv->associated = 0;
2008         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2009                                        reason_code);
2010 }
2011
2012
2013 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2014                                            int reason_code)
2015 {
2016         struct wpa_driver_nl80211_data *drv = priv;
2017         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2018                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2019         wpa_printf(MSG_DEBUG, "%s", __func__);
2020         drv->associated = 0;
2021         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2022                                        reason_code);
2023 }
2024
2025
2026 static int wpa_driver_nl80211_authenticate(
2027         void *priv, struct wpa_driver_auth_params *params)
2028 {
2029         struct wpa_driver_nl80211_data *drv = priv;
2030         int ret = -1, i;
2031         struct nl_msg *msg;
2032         enum nl80211_auth_type type;
2033         int count = 0;
2034
2035         drv->associated = 0;
2036         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2037
2038         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2039                 return -1;
2040
2041 retry:
2042         msg = nlmsg_alloc();
2043         if (!msg)
2044                 return -1;
2045
2046         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2047                    drv->ifindex);
2048
2049         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2050                     NL80211_CMD_AUTHENTICATE, 0);
2051
2052         for (i = 0; i < 4; i++) {
2053                 if (!params->wep_key[i])
2054                         continue;
2055                 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2056                                            i,
2057                                            i == params->wep_tx_keyidx, NULL, 0,
2058                                            params->wep_key[i],
2059                                            params->wep_key_len[i]);
2060                 if (params->wep_tx_keyidx != i)
2061                         continue;
2062                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2063                                params->wep_key[i], params->wep_key_len[i])) {
2064                         nlmsg_free(msg);
2065                         return -1;
2066                 }
2067         }
2068
2069         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2070         if (params->bssid) {
2071                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2072                            MAC2STR(params->bssid));
2073                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2074         }
2075         if (params->freq) {
2076                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2077                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2078         }
2079         if (params->ssid) {
2080                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2081                                   params->ssid, params->ssid_len);
2082                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2083                         params->ssid);
2084         }
2085         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2086         if (params->ie)
2087                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2088         /*
2089          * TODO: if multiple auth_alg options enabled, try them one by one if
2090          * the AP rejects authentication due to unknown auth alg
2091          */
2092         if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2093                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2094         else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2095                 type = NL80211_AUTHTYPE_SHARED_KEY;
2096         else if (params->auth_alg & AUTH_ALG_LEAP)
2097                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2098         else if (params->auth_alg & AUTH_ALG_FT)
2099                 type = NL80211_AUTHTYPE_FT;
2100         else
2101                 goto nla_put_failure;
2102         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2103         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2104
2105         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2106         msg = NULL;
2107         if (ret) {
2108                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2109                            "(%s)", ret, strerror(-ret));
2110                 count++;
2111                 if (ret == -EALREADY && count == 1 && params->bssid) {
2112                         /*
2113                          * mac80211 does not currently accept new
2114                          * authentication if we are already authenticated. As a
2115                          * workaround, force deauthentication and try again.
2116                          */
2117                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2118                                    "after forced deauthentication");
2119                         wpa_driver_nl80211_deauthenticate(
2120                                 drv, params->bssid,
2121                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2122                         nlmsg_free(msg);
2123                         goto retry;
2124                 }
2125                 goto nla_put_failure;
2126         }
2127         ret = 0;
2128         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2129                    "successfully");
2130
2131 nla_put_failure:
2132         nlmsg_free(msg);
2133         return ret;
2134 }
2135
2136
2137 struct phy_info_arg {
2138         u16 *num_modes;
2139         struct hostapd_hw_modes *modes;
2140 };
2141
2142 static int phy_info_handler(struct nl_msg *msg, void *arg)
2143 {
2144         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2145         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2146         struct phy_info_arg *phy_info = arg;
2147
2148         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2149
2150         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2151         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2152                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2153                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2154                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2155                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2156                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2157                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2158         };
2159
2160         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2161         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2162                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2163                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2164         };
2165
2166         struct nlattr *nl_band;
2167         struct nlattr *nl_freq;
2168         struct nlattr *nl_rate;
2169         int rem_band, rem_freq, rem_rate;
2170         struct hostapd_hw_modes *mode;
2171         int idx, mode_is_set;
2172
2173         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2174                   genlmsg_attrlen(gnlh, 0), NULL);
2175
2176         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2177                 return NL_SKIP;
2178
2179         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2180                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2181                 if (!mode)
2182                         return NL_SKIP;
2183                 phy_info->modes = mode;
2184
2185                 mode_is_set = 0;
2186
2187                 mode = &phy_info->modes[*(phy_info->num_modes)];
2188                 memset(mode, 0, sizeof(*mode));
2189                 *(phy_info->num_modes) += 1;
2190
2191                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2192                           nla_len(nl_band), NULL);
2193
2194                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2195                         mode->ht_capab = nla_get_u16(
2196                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2197                 }
2198
2199                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2200                         mode->a_mpdu_params |= nla_get_u8(
2201                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2202                                 0x03;
2203                 }
2204
2205                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2206                         mode->a_mpdu_params |= nla_get_u8(
2207                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2208                                 2;
2209                 }
2210
2211                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2212                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2213                         u8 *mcs;
2214                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2215                         os_memcpy(mode->mcs_set, mcs, 16);
2216                 }
2217
2218                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2219                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2220                                   nla_len(nl_freq), freq_policy);
2221                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2222                                 continue;
2223                         mode->num_channels++;
2224                 }
2225
2226                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2227                 if (!mode->channels)
2228                         return NL_SKIP;
2229
2230                 idx = 0;
2231
2232                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2233                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2234                                   nla_len(nl_freq), freq_policy);
2235                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2236                                 continue;
2237
2238                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2239                         mode->channels[idx].flag = 0;
2240
2241                         if (!mode_is_set) {
2242                                 /* crude heuristic */
2243                                 if (mode->channels[idx].freq < 4000)
2244                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2245                                 else
2246                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2247                                 mode_is_set = 1;
2248                         }
2249
2250                         /* crude heuristic */
2251                         if (mode->channels[idx].freq < 4000)
2252                                 if (mode->channels[idx].freq == 2484)
2253                                         mode->channels[idx].chan = 14;
2254                                 else
2255                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2256                         else
2257                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2258
2259                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2260                                 mode->channels[idx].flag |=
2261                                         HOSTAPD_CHAN_DISABLED;
2262                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2263                                 mode->channels[idx].flag |=
2264                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2265                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2266                                 mode->channels[idx].flag |=
2267                                         HOSTAPD_CHAN_NO_IBSS;
2268                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2269                                 mode->channels[idx].flag |=
2270                                         HOSTAPD_CHAN_RADAR;
2271
2272                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2273                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2274                                 mode->channels[idx].max_tx_power =
2275                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2276
2277                         idx++;
2278                 }
2279
2280                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2281                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2282                                   nla_len(nl_rate), rate_policy);
2283                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2284                                 continue;
2285                         mode->num_rates++;
2286                 }
2287
2288                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2289                 if (!mode->rates)
2290                         return NL_SKIP;
2291
2292                 idx = 0;
2293
2294                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2295                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2296                                   nla_len(nl_rate), rate_policy);
2297                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2298                                 continue;
2299                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2300
2301                         /* crude heuristic */
2302                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2303                             mode->rates[idx] > 200)
2304                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2305
2306                         idx++;
2307                 }
2308         }
2309
2310         return NL_SKIP;
2311 }
2312
2313 static struct hostapd_hw_modes *
2314 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2315 {
2316         u16 m;
2317         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2318         int i, mode11g_idx = -1;
2319
2320         /* If only 802.11g mode is included, use it to construct matching
2321          * 802.11b mode data. */
2322
2323         for (m = 0; m < *num_modes; m++) {
2324                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2325                         return modes; /* 802.11b already included */
2326                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2327                         mode11g_idx = m;
2328         }
2329
2330         if (mode11g_idx < 0)
2331                 return modes; /* 2.4 GHz band not supported at all */
2332
2333         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2334         if (nmodes == NULL)
2335                 return modes; /* Could not add 802.11b mode */
2336
2337         mode = &nmodes[*num_modes];
2338         os_memset(mode, 0, sizeof(*mode));
2339         (*num_modes)++;
2340         modes = nmodes;
2341
2342         mode->mode = HOSTAPD_MODE_IEEE80211B;
2343
2344         mode11g = &modes[mode11g_idx];
2345         mode->num_channels = mode11g->num_channels;
2346         mode->channels = os_malloc(mode11g->num_channels *
2347                                    sizeof(struct hostapd_channel_data));
2348         if (mode->channels == NULL) {
2349                 (*num_modes)--;
2350                 return modes; /* Could not add 802.11b mode */
2351         }
2352         os_memcpy(mode->channels, mode11g->channels,
2353                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2354
2355         mode->num_rates = 0;
2356         mode->rates = os_malloc(4 * sizeof(int));
2357         if (mode->rates == NULL) {
2358                 os_free(mode->channels);
2359                 (*num_modes)--;
2360                 return modes; /* Could not add 802.11b mode */
2361         }
2362
2363         for (i = 0; i < mode11g->num_rates; i++) {
2364                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2365                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2366                         continue;
2367                 mode->rates[mode->num_rates] = mode11g->rates[i];
2368                 mode->num_rates++;
2369                 if (mode->num_rates == 4)
2370                         break;
2371         }
2372
2373         if (mode->num_rates == 0) {
2374                 os_free(mode->channels);
2375                 os_free(mode->rates);
2376                 (*num_modes)--;
2377                 return modes; /* No 802.11b rates */
2378         }
2379
2380         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2381                    "information");
2382
2383         return modes;
2384 }
2385
2386
2387 static struct hostapd_hw_modes *
2388 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2389 {
2390         struct wpa_driver_nl80211_data *drv = priv;
2391         struct nl_msg *msg;
2392         struct phy_info_arg result = {
2393                 .num_modes = num_modes,
2394                 .modes = NULL,
2395         };
2396
2397         *num_modes = 0;
2398         *flags = 0;
2399
2400         msg = nlmsg_alloc();
2401         if (!msg)
2402                 return NULL;
2403
2404         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2405                     0, NL80211_CMD_GET_WIPHY, 0);
2406
2407         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2408
2409         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2410                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2411  nla_put_failure:
2412         return NULL;
2413 }
2414
2415
2416 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2417                                          const void *data, size_t len,
2418                                          int encrypt)
2419 {
2420         __u8 rtap_hdr[] = {
2421                 0x00, 0x00, /* radiotap version */
2422                 0x0e, 0x00, /* radiotap length */
2423                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2424                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2425                 0x00,       /* padding */
2426                 0x00, 0x00, /* RX and TX flags to indicate that */
2427                 0x00, 0x00, /* this is the injected frame directly */
2428         };
2429         struct iovec iov[2] = {
2430                 {
2431                         .iov_base = &rtap_hdr,
2432                         .iov_len = sizeof(rtap_hdr),
2433                 },
2434                 {
2435                         .iov_base = (void *) data,
2436                         .iov_len = len,
2437                 }
2438         };
2439         struct msghdr msg = {
2440                 .msg_name = NULL,
2441                 .msg_namelen = 0,
2442                 .msg_iov = iov,
2443                 .msg_iovlen = 2,
2444                 .msg_control = NULL,
2445                 .msg_controllen = 0,
2446                 .msg_flags = 0,
2447         };
2448
2449         if (encrypt)
2450                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2451
2452         return sendmsg(drv->monitor_sock, &msg, 0);
2453 }
2454
2455
2456 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2457                                         size_t data_len)
2458 {
2459         struct wpa_driver_nl80211_data *drv = priv;
2460         struct ieee80211_mgmt *mgmt;
2461         int encrypt = 1;
2462         u16 fc;
2463
2464         mgmt = (struct ieee80211_mgmt *) data;
2465         fc = le_to_host16(mgmt->frame_control);
2466
2467         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2468             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2469                 /*
2470                  * Only one of the authentication frame types is encrypted.
2471                  * In order for static WEP encryption to work properly (i.e.,
2472                  * to not encrypt the frame), we need to tell mac80211 about
2473                  * the frames that must not be encrypted.
2474                  */
2475                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2476                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2477                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2478                         encrypt = 0;
2479         }
2480
2481         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2482 }
2483
2484
2485 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2486                                          const u8 *head, size_t head_len,
2487                                          const u8 *tail, size_t tail_len,
2488                                          int dtim_period, int beacon_int)
2489 {
2490         struct wpa_driver_nl80211_data *drv = priv;
2491         struct nl_msg *msg;
2492         u8 cmd = NL80211_CMD_NEW_BEACON;
2493         int ret;
2494         int beacon_set;
2495         int ifindex = if_nametoindex(ifname);
2496 #ifdef HOSTAPD
2497         struct i802_bss *bss;
2498
2499         bss = get_bss(drv, ifindex);
2500         if (bss == NULL)
2501                 return -ENOENT;
2502         beacon_set = bss->beacon_set;
2503 #else /* HOSTAPD */
2504         beacon_set = drv->beacon_set;
2505 #endif /* HOSTAPD */
2506
2507         msg = nlmsg_alloc();
2508         if (!msg)
2509                 return -ENOMEM;
2510
2511         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2512                    beacon_set);
2513         if (beacon_set)
2514                 cmd = NL80211_CMD_SET_BEACON;
2515
2516         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2517                     0, cmd, 0);
2518         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2519         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2520         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2521         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2522         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2523
2524         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2525         if (ret) {
2526                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2527                            ret, strerror(-ret));
2528         } else {
2529 #ifdef HOSTAPD
2530                 bss->beacon_set = 1;
2531 #else /* HOSTAPD */
2532                 drv->beacon_set = 1;
2533 #endif /* HOSTAPD */
2534         }
2535         return ret;
2536  nla_put_failure:
2537         return -ENOBUFS;
2538 }
2539
2540
2541 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2542                                        int freq, int ht_enabled,
2543                                        int sec_channel_offset)
2544 {
2545         struct nl_msg *msg;
2546         int ret;
2547
2548         msg = nlmsg_alloc();
2549         if (!msg)
2550                 return -1;
2551
2552         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2553                     NL80211_CMD_SET_WIPHY, 0);
2554
2555         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2556         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2557         if (ht_enabled) {
2558                 switch (sec_channel_offset) {
2559                 case -1:
2560                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2561                                     NL80211_CHAN_HT40MINUS);
2562                         break;
2563                 case 1:
2564                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2565                                     NL80211_CHAN_HT40PLUS);
2566                         break;
2567                 default:
2568                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2569                                     NL80211_CHAN_HT20);
2570                         break;
2571                 }
2572         }
2573
2574         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2575         if (ret == 0)
2576                 return 0;
2577         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2578                    "%d (%s)", freq, ret, strerror(-ret));
2579 nla_put_failure:
2580         return -1;
2581 }
2582
2583
2584 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2585                                       struct hostapd_sta_add_params *params)
2586 {
2587         struct wpa_driver_nl80211_data *drv = priv;
2588         struct nl_msg *msg;
2589         int ret = -ENOBUFS;
2590
2591         msg = nlmsg_alloc();
2592         if (!msg)
2593                 return -ENOMEM;
2594
2595         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2596                     0, NL80211_CMD_NEW_STATION, 0);
2597
2598         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2599         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2600         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2601         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2602                 params->supp_rates);
2603         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2604                     params->listen_interval);
2605         if (params->ht_capabilities) {
2606                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2607                         sizeof(*params->ht_capabilities),
2608                         params->ht_capabilities);
2609         }
2610
2611         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2612         if (ret)
2613                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2614                            "result: %d (%s)", ret, strerror(-ret));
2615         if (ret == -EEXIST)
2616                 ret = 0;
2617  nla_put_failure:
2618         return ret;
2619 }
2620
2621
2622 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2623 {
2624         struct wpa_driver_nl80211_data *drv = priv;
2625         struct nl_msg *msg;
2626         int ret;
2627
2628         msg = nlmsg_alloc();
2629         if (!msg)
2630                 return -ENOMEM;
2631
2632         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2633                     0, NL80211_CMD_DEL_STATION, 0);
2634
2635         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2636                     if_nametoindex(drv->ifname));
2637         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2638
2639         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2640         if (ret == -ENOENT)
2641                 return 0;
2642         return ret;
2643  nla_put_failure:
2644         return -ENOBUFS;
2645 }
2646
2647
2648 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2649                                  int ifidx)
2650 {
2651         struct nl_msg *msg;
2652
2653         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2654
2655 #ifdef HOSTAPD
2656         /* stop listening for EAPOL on this interface */
2657         del_ifidx(drv, ifidx);
2658 #endif /* HOSTAPD */
2659
2660         msg = nlmsg_alloc();
2661         if (!msg)
2662                 goto nla_put_failure;
2663
2664         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2665                     0, NL80211_CMD_DEL_INTERFACE, 0);
2666         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2667
2668         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2669                 return;
2670  nla_put_failure:
2671         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2672                    ifidx);
2673 }
2674
2675
2676 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2677                                      const char *ifname,
2678                                      enum nl80211_iftype iftype,
2679                                      const u8 *addr, int wds)
2680 {
2681         struct nl_msg *msg, *flags = NULL;
2682         int ifidx;
2683         int ret = -ENOBUFS;
2684
2685         msg = nlmsg_alloc();
2686         if (!msg)
2687                 return -1;
2688
2689         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2690                     0, NL80211_CMD_NEW_INTERFACE, 0);
2691         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2692         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2693         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2694
2695         if (iftype == NL80211_IFTYPE_MONITOR) {
2696                 int err;
2697
2698                 flags = nlmsg_alloc();
2699                 if (!flags)
2700                         goto nla_put_failure;
2701
2702                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2703
2704                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2705
2706                 nlmsg_free(flags);
2707
2708                 if (err)
2709                         goto nla_put_failure;
2710         } else if (wds) {
2711                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2712         }
2713
2714         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2715         if (ret) {
2716  nla_put_failure:
2717                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2718                            ifname, ret, strerror(-ret));
2719                 return ret;
2720         }
2721
2722         ifidx = if_nametoindex(ifname);
2723         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2724                    ifname, ifidx);
2725
2726         if (ifidx <= 0)
2727                 return -1;
2728
2729 #ifdef HOSTAPD
2730         /* start listening for EAPOL on this interface */
2731         add_ifidx(drv, ifidx);
2732 #endif /* HOSTAPD */
2733
2734         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2735             set_ifhwaddr(drv, ifname, addr)) {
2736                 nl80211_remove_iface(drv, ifidx);
2737                 return -1;
2738         }
2739
2740         return ifidx;
2741 }
2742
2743
2744 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2745                                 const char *ifname, enum nl80211_iftype iftype,
2746                                 const u8 *addr, int wds)
2747 {
2748         int ret;
2749
2750         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
2751
2752         /* if error occured and interface exists already */
2753         if (ret == -ENFILE && if_nametoindex(ifname)) {
2754                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2755
2756                 /* Try to remove the interface that was already there. */
2757                 nl80211_remove_iface(drv, if_nametoindex(ifname));
2758
2759                 /* Try to create the interface again */
2760                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2761                                                 wds);
2762         }
2763
2764         return ret;
2765 }
2766
2767
2768 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2769 {
2770         struct ieee80211_hdr *hdr;
2771         u16 fc;
2772         union wpa_event_data event;
2773
2774         hdr = (struct ieee80211_hdr *) buf;
2775         fc = le_to_host16(hdr->frame_control);
2776
2777         os_memset(&event, 0, sizeof(event));
2778         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2779         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2780         event.tx_status.dst = hdr->addr1;
2781         event.tx_status.data = buf;
2782         event.tx_status.data_len = len;
2783         event.tx_status.ack = ok;
2784         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
2785 }
2786
2787
2788 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2789                              u8 *buf, size_t len)
2790 {
2791         union wpa_event_data event;
2792         os_memset(&event, 0, sizeof(event));
2793         event.rx_from_unknown.frame = buf;
2794         event.rx_from_unknown.len = len;
2795         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2796 }
2797
2798
2799 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2800                          u8 *buf, size_t len, int datarate, int ssi_signal)
2801 {
2802         struct ieee80211_hdr *hdr;
2803         u16 fc;
2804         union wpa_event_data event;
2805
2806         hdr = (struct ieee80211_hdr *) buf;
2807         fc = le_to_host16(hdr->frame_control);
2808
2809         switch (WLAN_FC_GET_TYPE(fc)) {
2810         case WLAN_FC_TYPE_MGMT:
2811                 os_memset(&event, 0, sizeof(event));
2812                 event.rx_mgmt.frame = buf;
2813                 event.rx_mgmt.frame_len = len;
2814                 event.rx_mgmt.datarate = datarate;
2815                 event.rx_mgmt.ssi_signal = ssi_signal;
2816                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
2817                 break;
2818         case WLAN_FC_TYPE_CTRL:
2819                 /* can only get here with PS-Poll frames */
2820                 wpa_printf(MSG_DEBUG, "CTRL");
2821                 from_unknown_sta(drv, buf, len);
2822                 break;
2823         case WLAN_FC_TYPE_DATA:
2824                 from_unknown_sta(drv, buf, len);
2825                 break;
2826         }
2827 }
2828
2829
2830 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2831 {
2832         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2833         int len;
2834         unsigned char buf[3000];
2835         struct ieee80211_radiotap_iterator iter;
2836         int ret;
2837         int datarate = 0, ssi_signal = 0;
2838         int injected = 0, failed = 0, rxflags = 0;
2839
2840         len = recv(sock, buf, sizeof(buf), 0);
2841         if (len < 0) {
2842                 perror("recv");
2843                 return;
2844         }
2845
2846         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
2847                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
2848                            "frame since Probe Request reporting is disabled");
2849                 return;
2850         }
2851
2852         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2853                 printf("received invalid radiotap frame\n");
2854                 return;
2855         }
2856
2857         while (1) {
2858                 ret = ieee80211_radiotap_iterator_next(&iter);
2859                 if (ret == -ENOENT)
2860                         break;
2861                 if (ret) {
2862                         printf("received invalid radiotap frame (%d)\n", ret);
2863                         return;
2864                 }
2865                 switch (iter.this_arg_index) {
2866                 case IEEE80211_RADIOTAP_FLAGS:
2867                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2868                                 len -= 4;
2869                         break;
2870                 case IEEE80211_RADIOTAP_RX_FLAGS:
2871                         rxflags = 1;
2872                         break;
2873                 case IEEE80211_RADIOTAP_TX_FLAGS:
2874                         injected = 1;
2875                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2876                                         IEEE80211_RADIOTAP_F_TX_FAIL;
2877                         break;
2878                 case IEEE80211_RADIOTAP_DATA_RETRIES:
2879                         break;
2880                 case IEEE80211_RADIOTAP_CHANNEL:
2881                         /* TODO: convert from freq/flags to channel number */
2882                         break;
2883                 case IEEE80211_RADIOTAP_RATE:
2884                         datarate = *iter.this_arg * 5;
2885                         break;
2886                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2887                         ssi_signal = *iter.this_arg;
2888                         break;
2889                 }
2890         }
2891
2892         if (rxflags && injected)
2893                 return;
2894
2895         if (!injected)
2896                 handle_frame(drv, buf + iter.max_length,
2897                              len - iter.max_length, datarate, ssi_signal);
2898         else
2899                 handle_tx_callback(drv->ctx, buf + iter.max_length,
2900                                    len - iter.max_length, !failed);
2901 }
2902
2903
2904 /*
2905  * we post-process the filter code later and rewrite
2906  * this to the offset to the last instruction
2907  */
2908 #define PASS    0xFF
2909 #define FAIL    0xFE
2910
2911 static struct sock_filter msock_filter_insns[] = {
2912         /*
2913          * do a little-endian load of the radiotap length field
2914          */
2915         /* load lower byte into A */
2916         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
2917         /* put it into X (== index register) */
2918         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2919         /* load upper byte into A */
2920         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
2921         /* left-shift it by 8 */
2922         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2923         /* or with X */
2924         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2925         /* put result into X */
2926         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2927
2928         /*
2929          * Allow management frames through, this also gives us those
2930          * management frames that we sent ourselves with status
2931          */
2932         /* load the lower byte of the IEEE 802.11 frame control field */
2933         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
2934         /* mask off frame type and version */
2935         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2936         /* accept frame if it's both 0, fall through otherwise */
2937         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2938
2939         /*
2940          * TODO: add a bit to radiotap RX flags that indicates
2941          * that the sending station is not associated, then
2942          * add a filter here that filters on our DA and that flag
2943          * to allow us to deauth frames to that bad station.
2944          *
2945          * Not a regression -- we didn't do it before either.
2946          */
2947
2948 #if 0
2949         /*
2950          * drop non-data frames
2951          */
2952         /* load the lower byte of the frame control field */
2953         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2954         /* mask off QoS bit */
2955         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
2956         /* drop non-data frames */
2957         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
2958 #endif
2959         /* load the upper byte of the frame control field */
2960         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
2961         /* mask off toDS/fromDS */
2962         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
2963         /* accept WDS frames */
2964         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
2965
2966         /*
2967          * add header length to index
2968          */
2969         /* load the lower byte of the frame control field */
2970         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2971         /* mask off QoS bit */
2972         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
2973         /* right shift it by 6 to give 0 or 2 */
2974         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
2975         /* add data frame header length */
2976         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
2977         /* add index, was start of 802.11 header */
2978         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
2979         /* move to index, now start of LL header */
2980         BPF_STMT(BPF_MISC | BPF_TAX, 0),
2981
2982         /*
2983          * Accept empty data frames, we use those for
2984          * polling activity.
2985          */
2986         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
2987         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2988
2989         /*
2990          * Accept EAPOL frames
2991          */
2992         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
2993         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2994         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
2995         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2996
2997         /* keep these last two statements or change the code below */
2998         /* return 0 == "DROP" */
2999         BPF_STMT(BPF_RET | BPF_K, 0),
3000         /* return ~0 == "keep all" */
3001         BPF_STMT(BPF_RET | BPF_K, ~0),
3002 };
3003
3004 static struct sock_fprog msock_filter = {
3005         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3006         .filter = msock_filter_insns,
3007 };
3008
3009
3010 static int add_monitor_filter(int s)
3011 {
3012         int idx;
3013
3014         /* rewrite all PASS/FAIL jump offsets */
3015         for (idx = 0; idx < msock_filter.len; idx++) {
3016                 struct sock_filter *insn = &msock_filter_insns[idx];
3017
3018                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3019                         if (insn->code == (BPF_JMP|BPF_JA)) {
3020                                 if (insn->k == PASS)
3021                                         insn->k = msock_filter.len - idx - 2;
3022                                 else if (insn->k == FAIL)
3023                                         insn->k = msock_filter.len - idx - 3;
3024                         }
3025
3026                         if (insn->jt == PASS)
3027                                 insn->jt = msock_filter.len - idx - 2;
3028                         else if (insn->jt == FAIL)
3029                                 insn->jt = msock_filter.len - idx - 3;
3030
3031                         if (insn->jf == PASS)
3032                                 insn->jf = msock_filter.len - idx - 2;
3033                         else if (insn->jf == FAIL)
3034                                 insn->jf = msock_filter.len - idx - 3;
3035                 }
3036         }
3037
3038         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3039                        &msock_filter, sizeof(msock_filter))) {
3040                 perror("SO_ATTACH_FILTER");
3041                 return -1;
3042         }
3043
3044         return 0;
3045 }
3046
3047
3048 static void nl80211_remove_monitor_interface(
3049         struct wpa_driver_nl80211_data *drv)
3050 {
3051         if (drv->monitor_ifidx >= 0) {
3052                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3053                 drv->monitor_ifidx = -1;
3054         }
3055         if (drv->monitor_sock >= 0) {
3056                 eloop_unregister_read_sock(drv->monitor_sock);
3057                 close(drv->monitor_sock);
3058                 drv->monitor_sock = -1;
3059         }
3060 }
3061
3062
3063 static int
3064 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3065 {
3066         char buf[IFNAMSIZ];
3067         struct sockaddr_ll ll;
3068         int optval;
3069         socklen_t optlen;
3070
3071         snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3072         buf[IFNAMSIZ - 1] = '\0';
3073
3074         drv->monitor_ifidx =
3075                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3076                                      0);
3077
3078         if (drv->monitor_ifidx < 0)
3079                 return -1;
3080
3081         if (hostapd_set_iface_flags(drv, buf, 1))
3082                 goto error;
3083
3084         memset(&ll, 0, sizeof(ll));
3085         ll.sll_family = AF_PACKET;
3086         ll.sll_ifindex = drv->monitor_ifidx;
3087         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3088         if (drv->monitor_sock < 0) {
3089                 perror("socket[PF_PACKET,SOCK_RAW]");
3090                 goto error;
3091         }
3092
3093         if (add_monitor_filter(drv->monitor_sock)) {
3094                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3095                            "interface; do filtering in user space");
3096                 /* This works, but will cost in performance. */
3097         }
3098
3099         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3100                 perror("monitor socket bind");
3101                 goto error;
3102         }
3103
3104         optlen = sizeof(optval);
3105         optval = 20;
3106         if (setsockopt
3107             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3108                 perror("Failed to set socket priority");
3109                 goto error;
3110         }
3111
3112         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3113                                      drv, NULL)) {
3114                 printf("Could not register monitor read socket\n");
3115                 goto error;
3116         }
3117
3118         return 0;
3119  error:
3120         nl80211_remove_monitor_interface(drv);
3121         return -1;
3122 }
3123
3124
3125 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3126
3127 static int wpa_driver_nl80211_hapd_send_eapol(
3128         void *priv, const u8 *addr, const u8 *data,
3129         size_t data_len, int encrypt, const u8 *own_addr)
3130 {
3131         struct wpa_driver_nl80211_data *drv = priv;
3132         struct ieee80211_hdr *hdr;
3133         size_t len;
3134         u8 *pos;
3135         int res;
3136 #if 0 /* FIX */
3137         int qos = sta->flags & WPA_STA_WMM;
3138 #else
3139         int qos = 0;
3140 #endif
3141
3142         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3143                 data_len;
3144         hdr = os_zalloc(len);
3145         if (hdr == NULL) {
3146                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3147                        (unsigned long) len);
3148                 return -1;
3149         }
3150
3151         hdr->frame_control =
3152                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3153         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3154         if (encrypt)
3155                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3156 #if 0 /* To be enabled if qos determination is added above */
3157         if (qos) {
3158                 hdr->frame_control |=
3159                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3160         }
3161 #endif
3162
3163         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3164         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3165         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3166         pos = (u8 *) (hdr + 1);
3167
3168 #if 0 /* To be enabled if qos determination is added above */
3169         if (qos) {
3170                 /* add an empty QoS header if needed */
3171                 pos[0] = 0;
3172                 pos[1] = 0;
3173                 pos += 2;
3174         }
3175 #endif
3176
3177         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3178         pos += sizeof(rfc1042_header);
3179         WPA_PUT_BE16(pos, ETH_P_PAE);
3180         pos += 2;
3181         memcpy(pos, data, data_len);
3182
3183         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3184         if (res < 0) {
3185                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3186                            "failed: %d (%s)",
3187                            (unsigned long) len, errno, strerror(errno));
3188         }
3189         os_free(hdr);
3190
3191         return res;
3192 }
3193
3194
3195 static u32 sta_flags_nl80211(int flags)
3196 {
3197         u32 f = 0;
3198
3199         if (flags & WPA_STA_AUTHORIZED)
3200                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3201         if (flags & WPA_STA_WMM)
3202                 f |= BIT(NL80211_STA_FLAG_WME);
3203         if (flags & WPA_STA_SHORT_PREAMBLE)
3204                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3205         if (flags & WPA_STA_MFP)
3206                 f |= BIT(NL80211_STA_FLAG_MFP);
3207
3208         return f;
3209 }
3210
3211
3212 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3213                                             int total_flags, int flags_or,
3214                                             int flags_and)
3215 {
3216         struct wpa_driver_nl80211_data *drv = priv;
3217         struct nl_msg *msg, *flags = NULL;
3218         struct nl80211_sta_flag_update upd;
3219
3220         msg = nlmsg_alloc();
3221         if (!msg)
3222                 return -ENOMEM;
3223
3224         flags = nlmsg_alloc();
3225         if (!flags) {
3226                 nlmsg_free(msg);
3227                 return -ENOMEM;
3228         }
3229
3230         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3231                     0, NL80211_CMD_SET_STATION, 0);
3232
3233         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3234                     if_nametoindex(drv->ifname));
3235         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3236
3237         /*
3238          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3239          * can be removed eventually.
3240          */
3241         if (total_flags & WPA_STA_AUTHORIZED)
3242                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3243
3244         if (total_flags & WPA_STA_WMM)
3245                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3246
3247         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3248                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3249
3250         if (total_flags & WPA_STA_MFP)
3251                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3252
3253         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3254                 goto nla_put_failure;
3255
3256         os_memset(&upd, 0, sizeof(upd));
3257         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3258         upd.set = sta_flags_nl80211(flags_or);
3259         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3260
3261         nlmsg_free(flags);
3262
3263         return send_and_recv_msgs(drv, msg, NULL, NULL);
3264  nla_put_failure:
3265         nlmsg_free(flags);
3266         return -ENOBUFS;
3267 }
3268
3269
3270 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3271                                  struct wpa_driver_associate_params *params)
3272 {
3273         if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3274             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3275                 nl80211_remove_monitor_interface(drv);
3276                 return -1;
3277         }
3278
3279         /* TODO: setup monitor interface (and add code somewhere to remove this
3280          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3281
3282         return 0;
3283 }
3284
3285
3286 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3287 {
3288         struct nl_msg *msg;
3289         int ret = -1;
3290
3291         msg = nlmsg_alloc();
3292         if (!msg)
3293                 return -1;
3294
3295         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3296                     NL80211_CMD_LEAVE_IBSS, 0);
3297         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3298         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3299         msg = NULL;
3300         if (ret) {
3301                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3302                            "(%s)", ret, strerror(-ret));
3303                 goto nla_put_failure;
3304         }
3305
3306         ret = 0;
3307         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3308
3309 nla_put_failure:
3310         nlmsg_free(msg);
3311         return ret;
3312 }
3313
3314
3315 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3316                                    struct wpa_driver_associate_params *params)
3317 {
3318         struct nl_msg *msg;
3319         int ret = -1;
3320         int count = 0;
3321
3322         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3323
3324         if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3325                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3326                            "IBSS mode");
3327                 return -1;
3328         }
3329
3330 retry:
3331         msg = nlmsg_alloc();
3332         if (!msg)
3333                 return -1;
3334
3335         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3336                     NL80211_CMD_JOIN_IBSS, 0);
3337         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3338
3339         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3340                 goto nla_put_failure;
3341
3342         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3343                           params->ssid, params->ssid_len);
3344         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3345                 params->ssid);
3346         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3347         drv->ssid_len = params->ssid_len;
3348
3349         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3350         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3351
3352         ret = nl80211_set_conn_keys(params, msg);
3353         if (ret)
3354                 goto nla_put_failure;
3355
3356         if (params->wpa_ie) {
3357                 wpa_hexdump(MSG_DEBUG,
3358                             "  * Extra IEs for Beacon/Probe Response frames",
3359                             params->wpa_ie, params->wpa_ie_len);
3360                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3361                         params->wpa_ie);
3362         }
3363
3364         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3365         msg = NULL;
3366         if (ret) {
3367                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3368                            ret, strerror(-ret));
3369                 count++;
3370                 if (ret == -EALREADY && count == 1) {
3371                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3372                                    "forced leave");
3373                         nl80211_leave_ibss(drv);
3374                         nlmsg_free(msg);
3375                         goto retry;
3376                 }
3377
3378                 goto nla_put_failure;
3379         }
3380         ret = 0;
3381         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3382
3383 nla_put_failure:
3384         nlmsg_free(msg);
3385         return ret;
3386 }
3387
3388
3389 static int wpa_driver_nl80211_connect(
3390         struct wpa_driver_nl80211_data *drv,
3391         struct wpa_driver_associate_params *params)
3392 {
3393         struct nl_msg *msg;
3394         enum nl80211_auth_type type;
3395         int ret = 0;
3396
3397         msg = nlmsg_alloc();
3398         if (!msg)
3399                 return -1;
3400
3401         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3402         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3403                     NL80211_CMD_CONNECT, 0);
3404
3405         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3406         if (params->bssid) {
3407                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3408                            MAC2STR(params->bssid));
3409                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3410         }
3411         if (params->freq) {
3412                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3413                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3414         }
3415         if (params->ssid) {
3416                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3417                                   params->ssid, params->ssid_len);
3418                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3419                         params->ssid);
3420                 if (params->ssid_len > sizeof(drv->ssid))
3421                         goto nla_put_failure;
3422                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3423                 drv->ssid_len = params->ssid_len;
3424         }
3425         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3426         if (params->wpa_ie)
3427                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3428                         params->wpa_ie);
3429
3430         if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3431                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3432         else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3433                 type = NL80211_AUTHTYPE_SHARED_KEY;
3434         else if (params->auth_alg & AUTH_ALG_LEAP)
3435                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3436         else if (params->auth_alg & AUTH_ALG_FT)
3437                 type = NL80211_AUTHTYPE_FT;
3438         else
3439                 goto nla_put_failure;
3440
3441         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3442         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3443
3444         if (params->wpa_ie && params->wpa_ie_len) {
3445                 enum nl80211_wpa_versions ver;
3446
3447                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3448                         ver = NL80211_WPA_VERSION_2;
3449                 else
3450                         ver = NL80211_WPA_VERSION_1;
3451
3452                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3453                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3454         }
3455
3456         if (params->pairwise_suite != CIPHER_NONE) {
3457                 int cipher;
3458
3459                 switch (params->pairwise_suite) {
3460                 case CIPHER_WEP40:
3461                         cipher = WLAN_CIPHER_SUITE_WEP40;
3462                         break;
3463                 case CIPHER_WEP104:
3464                         cipher = WLAN_CIPHER_SUITE_WEP104;
3465                         break;
3466                 case CIPHER_CCMP:
3467                         cipher = WLAN_CIPHER_SUITE_CCMP;
3468                         break;
3469                 case CIPHER_TKIP:
3470                 default:
3471                         cipher = WLAN_CIPHER_SUITE_TKIP;
3472                         break;
3473                 }
3474                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3475         }
3476
3477         if (params->group_suite != CIPHER_NONE) {
3478                 int cipher;
3479
3480                 switch (params->group_suite) {
3481                 case CIPHER_WEP40:
3482                         cipher = WLAN_CIPHER_SUITE_WEP40;
3483                         break;
3484                 case CIPHER_WEP104:
3485                         cipher = WLAN_CIPHER_SUITE_WEP104;
3486                         break;
3487                 case CIPHER_CCMP:
3488                         cipher = WLAN_CIPHER_SUITE_CCMP;
3489                         break;
3490                 case CIPHER_TKIP:
3491                 default:
3492                         cipher = WLAN_CIPHER_SUITE_TKIP;
3493                         break;
3494                 }
3495                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3496         }
3497
3498         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3499             params->key_mgmt_suite == KEY_MGMT_PSK) {
3500                 int mgmt = WLAN_AKM_SUITE_PSK;
3501
3502                 switch (params->key_mgmt_suite) {
3503                 case KEY_MGMT_802_1X:
3504                         mgmt = WLAN_AKM_SUITE_8021X;
3505                         break;
3506                 case KEY_MGMT_PSK:
3507                 default:
3508                         mgmt = WLAN_AKM_SUITE_PSK;
3509                         break;
3510                 }
3511                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3512         }
3513
3514         ret = nl80211_set_conn_keys(params, msg);
3515         if (ret)
3516                 goto nla_put_failure;
3517
3518         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3519         msg = NULL;
3520         if (ret) {
3521                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3522                            "(%s)", ret, strerror(-ret));
3523                 goto nla_put_failure;
3524         }
3525         ret = 0;
3526         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3527
3528 nla_put_failure:
3529         nlmsg_free(msg);
3530         return ret;
3531
3532 }
3533
3534
3535 static int wpa_driver_nl80211_associate(
3536         void *priv, struct wpa_driver_associate_params *params)
3537 {
3538         struct wpa_driver_nl80211_data *drv = priv;
3539         int ret = -1;
3540         struct nl_msg *msg;
3541
3542         if (params->mode == IEEE80211_MODE_AP)
3543                 return wpa_driver_nl80211_ap(drv, params);
3544
3545         if (params->mode == IEEE80211_MODE_IBSS)
3546                 return wpa_driver_nl80211_ibss(drv, params);
3547
3548         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3549                 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3550                         return -1;
3551                 return wpa_driver_nl80211_connect(drv, params);
3552         }
3553
3554         drv->associated = 0;
3555
3556         msg = nlmsg_alloc();
3557         if (!msg)
3558                 return -1;
3559
3560         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3561                    drv->ifindex);
3562         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3563                     NL80211_CMD_ASSOCIATE, 0);
3564
3565         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3566         if (params->bssid) {
3567                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3568                            MAC2STR(params->bssid));
3569                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3570         }
3571         if (params->freq) {
3572                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3573                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3574                 drv->assoc_freq = params->freq;
3575         } else
3576                 drv->assoc_freq = 0;
3577         if (params->ssid) {
3578                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3579                                   params->ssid, params->ssid_len);
3580                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3581                         params->ssid);
3582                 if (params->ssid_len > sizeof(drv->ssid))
3583                         goto nla_put_failure;
3584                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3585                 drv->ssid_len = params->ssid_len;
3586         }
3587         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3588         if (params->wpa_ie)
3589                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3590                         params->wpa_ie);
3591
3592 #ifdef CONFIG_IEEE80211W
3593         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3594                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3595 #endif /* CONFIG_IEEE80211W */
3596
3597         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3598
3599         if (params->prev_bssid) {
3600                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3601                            MAC2STR(params->prev_bssid));
3602                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3603                         params->prev_bssid);
3604         }
3605
3606         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3607         msg = NULL;
3608         if (ret) {
3609                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3610                            "(%s)", ret, strerror(-ret));
3611                 goto nla_put_failure;
3612         }
3613         ret = 0;
3614         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3615                    "successfully");
3616
3617 nla_put_failure:
3618         nlmsg_free(msg);
3619         return ret;
3620 }
3621
3622
3623 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3624                             int ifindex, int mode)
3625 {
3626         struct nl_msg *msg;
3627         int ret = -ENOBUFS;
3628
3629         msg = nlmsg_alloc();
3630         if (!msg)
3631                 return -ENOMEM;
3632
3633         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3634                     0, NL80211_CMD_SET_INTERFACE, 0);
3635         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3636         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3637
3638         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3639         if (!ret)
3640                 return 0;
3641 nla_put_failure:
3642         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3643                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3644         return ret;
3645 }
3646
3647
3648 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3649 {
3650         struct wpa_driver_nl80211_data *drv = priv;
3651         int ret = -1;
3652         int nlmode;
3653
3654         switch (mode) {
3655         case 0:
3656                 nlmode = NL80211_IFTYPE_STATION;
3657                 break;
3658         case 1:
3659                 nlmode = NL80211_IFTYPE_ADHOC;
3660                 break;
3661         case 2:
3662                 nlmode = NL80211_IFTYPE_AP;
3663                 break;
3664         default:
3665                 return -1;
3666         }
3667
3668         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3669                 drv->nlmode = nlmode;
3670                 ret = 0;
3671                 goto done;
3672         }
3673
3674         if (nlmode == drv->nlmode) {
3675                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3676                            "requested mode - ignore error");
3677                 ret = 0;
3678                 goto done; /* Already in the requested mode */
3679         }
3680
3681         /* mac80211 doesn't allow mode changes while the device is up, so
3682          * take the device down, try to set the mode again, and bring the
3683          * device back up.
3684          */
3685         if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3686                 /* Try to set the mode again while the interface is down */
3687                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3688                 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3689                         ret = -1;
3690         }
3691
3692         if (!ret) {
3693                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3694                            "interface is down");
3695                 drv->nlmode = nlmode;
3696         }
3697
3698 done:
3699         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3700                 /* Setup additional AP mode functionality if needed */
3701                 if (drv->monitor_ifidx < 0 &&
3702                     nl80211_create_monitor_interface(drv))
3703                         return -1;
3704         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3705                 /* Remove additional AP mode functionality */
3706                 nl80211_remove_monitor_interface(drv);
3707         }
3708
3709         if (ret)
3710                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3711                            "from %d failed", nlmode, drv->nlmode);
3712
3713         return ret;
3714 }
3715
3716
3717 static int wpa_driver_nl80211_get_capa(void *priv,
3718                                        struct wpa_driver_capa *capa)
3719 {
3720         struct wpa_driver_nl80211_data *drv = priv;
3721         if (!drv->has_capability)
3722                 return -1;
3723         os_memcpy(capa, &drv->capa, sizeof(*capa));
3724         return 0;
3725 }
3726
3727
3728 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3729 {
3730         struct wpa_driver_nl80211_data *drv = priv;
3731
3732         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3733                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3734         drv->operstate = state;
3735         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3736                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
3737 }
3738
3739
3740 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3741 {
3742         struct wpa_driver_nl80211_data *drv = priv;
3743         struct nl_msg *msg;
3744         struct nl80211_sta_flag_update upd;
3745
3746         msg = nlmsg_alloc();
3747         if (!msg)
3748                 return -ENOMEM;
3749
3750         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3751                     0, NL80211_CMD_SET_STATION, 0);
3752
3753         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3754                     if_nametoindex(drv->ifname));
3755         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3756
3757         os_memset(&upd, 0, sizeof(upd));
3758         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3759         if (authorized)
3760                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3761         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3762
3763         return send_and_recv_msgs(drv, msg, NULL, NULL);
3764  nla_put_failure:
3765         return -ENOBUFS;
3766 }
3767
3768
3769 #ifdef HOSTAPD
3770
3771 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3772                                  int ifindex)
3773 {
3774         struct i802_bss *bss = &drv->bss;
3775         while (bss) {
3776                 if (ifindex == bss->ifindex)
3777                         return bss;
3778                 bss = bss->next;
3779         }
3780         wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3781         return NULL;
3782 }
3783
3784
3785 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3786 {
3787         int i;
3788         int *old;
3789
3790         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3791                    ifidx);
3792         for (i = 0; i < drv->num_if_indices; i++) {
3793                 if (drv->if_indices[i] == 0) {
3794                         drv->if_indices[i] = ifidx;
3795                         return;
3796                 }
3797         }
3798
3799         if (drv->if_indices != drv->default_if_indices)
3800                 old = drv->if_indices;
3801         else
3802                 old = NULL;
3803
3804         drv->if_indices = os_realloc(old,
3805                                      sizeof(int) * (drv->num_if_indices + 1));
3806         if (!drv->if_indices) {
3807                 if (!old)
3808                         drv->if_indices = drv->default_if_indices;
3809                 else
3810                         drv->if_indices = old;
3811                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3812                            "interfaces");
3813                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3814                 return;
3815         }
3816         drv->if_indices[drv->num_if_indices] = ifidx;
3817         drv->num_if_indices++;
3818 }
3819
3820
3821 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3822 {
3823         int i;
3824
3825         for (i = 0; i < drv->num_if_indices; i++) {
3826                 if (drv->if_indices[i] == ifidx) {
3827                         drv->if_indices[i] = 0;
3828                         break;
3829                 }
3830         }
3831 }
3832
3833
3834 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3835 {
3836         int i;
3837
3838         for (i = 0; i < drv->num_if_indices; i++)
3839                 if (drv->if_indices[i] == ifidx)
3840                         return 1;
3841
3842         return 0;
3843 }
3844
3845
3846 static inline int min_int(int a, int b)
3847 {
3848         if (a < b)
3849                 return a;
3850         return b;
3851 }
3852
3853
3854 static int get_key_handler(struct nl_msg *msg, void *arg)
3855 {
3856         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3857         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3858
3859         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3860                   genlmsg_attrlen(gnlh, 0), NULL);
3861
3862         /*
3863          * TODO: validate the key index and mac address!
3864          * Otherwise, there's a race condition as soon as
3865          * the kernel starts sending key notifications.
3866          */
3867
3868         if (tb[NL80211_ATTR_KEY_SEQ])
3869                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3870                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3871         return NL_SKIP;
3872 }
3873
3874
3875 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3876                            int idx, u8 *seq)
3877 {
3878         struct wpa_driver_nl80211_data *drv = priv;
3879         struct nl_msg *msg;
3880
3881         msg = nlmsg_alloc();
3882         if (!msg)
3883                 return -ENOMEM;
3884
3885         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3886                     0, NL80211_CMD_GET_KEY, 0);
3887
3888         if (addr)
3889                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3890         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3891         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3892
3893         memset(seq, 0, 6);
3894
3895         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3896  nla_put_failure:
3897         return -ENOBUFS;
3898 }
3899
3900
3901 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3902                               int mode)
3903 {
3904         struct wpa_driver_nl80211_data *drv = priv;
3905         struct nl_msg *msg;
3906         u8 rates[NL80211_MAX_SUPP_RATES];
3907         u8 rates_len = 0;
3908         int i;
3909
3910         msg = nlmsg_alloc();
3911         if (!msg)
3912                 return -ENOMEM;
3913
3914         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3915                     NL80211_CMD_SET_BSS, 0);
3916
3917         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3918                 rates[rates_len++] = basic_rates[i] / 5;
3919
3920         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3921
3922         /* TODO: multi-BSS support */
3923         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3924
3925         return send_and_recv_msgs(drv, msg, NULL, NULL);
3926  nla_put_failure:
3927         return -ENOBUFS;
3928 }
3929
3930
3931 /* Set kernel driver on given frequency (MHz) */
3932 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3933 {
3934         struct wpa_driver_nl80211_data *drv = priv;
3935         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3936                                            freq->sec_channel_offset);
3937 }
3938
3939
3940 static int i802_set_rts(void *priv, int rts)
3941 {
3942         struct wpa_driver_nl80211_data *drv = priv;
3943         struct nl_msg *msg;
3944         int ret = -ENOBUFS;
3945         u32 val;
3946
3947         msg = nlmsg_alloc();
3948         if (!msg)
3949                 return -ENOMEM;
3950
3951         if (rts >= 2347)
3952                 val = (u32) -1;
3953         else
3954                 val = rts;
3955
3956         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3957                     0, NL80211_CMD_SET_WIPHY, 0);
3958         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3959         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3960
3961         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3962         if (!ret)
3963                 return 0;
3964 nla_put_failure:
3965         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3966                    "%d (%s)", rts, ret, strerror(-ret));
3967         return ret;
3968 }
3969
3970
3971 static int i802_set_frag(void *priv, int frag)
3972 {
3973         struct wpa_driver_nl80211_data *drv = priv;
3974         struct nl_msg *msg;
3975         int ret = -ENOBUFS;
3976         u32 val;
3977
3978         msg = nlmsg_alloc();
3979         if (!msg)
3980                 return -ENOMEM;
3981
3982         if (frag >= 2346)
3983                 val = (u32) -1;
3984         else
3985                 val = frag;
3986
3987         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3988                     0, NL80211_CMD_SET_WIPHY, 0);
3989         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3990         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3991
3992         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3993         if (!ret)
3994                 return 0;
3995 nla_put_failure:
3996         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3997                    "%d: %d (%s)", frag, ret, strerror(-ret));
3998         return ret;
3999 }
4000
4001
4002 static int i802_flush(void *priv)
4003 {
4004         struct wpa_driver_nl80211_data *drv = priv;
4005         struct nl_msg *msg;
4006
4007         msg = nlmsg_alloc();
4008         if (!msg)
4009                 return -1;
4010
4011         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4012                     0, NL80211_CMD_DEL_STATION, 0);
4013
4014         /*
4015          * XXX: FIX! this needs to flush all VLANs too
4016          */
4017         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4018                     if_nametoindex(drv->ifname));
4019
4020         return send_and_recv_msgs(drv, msg, NULL, NULL);
4021  nla_put_failure:
4022         return -ENOBUFS;
4023 }
4024
4025
4026 static int get_sta_handler(struct nl_msg *msg, void *arg)
4027 {
4028         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4029         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4030         struct hostap_sta_driver_data *data = arg;
4031         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4032         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4033                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4034                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4035                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4036                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4037                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4038         };
4039
4040         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4041                   genlmsg_attrlen(gnlh, 0), NULL);
4042
4043         /*
4044          * TODO: validate the interface and mac address!
4045          * Otherwise, there's a race condition as soon as
4046          * the kernel starts sending station notifications.
4047          */
4048
4049         if (!tb[NL80211_ATTR_STA_INFO]) {
4050                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4051                 return NL_SKIP;
4052         }
4053         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4054                              tb[NL80211_ATTR_STA_INFO],
4055                              stats_policy)) {
4056                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4057                 return NL_SKIP;
4058         }
4059
4060         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4061                 data->inactive_msec =
4062                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4063         if (stats[NL80211_STA_INFO_RX_BYTES])
4064                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4065         if (stats[NL80211_STA_INFO_TX_BYTES])
4066                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4067         if (stats[NL80211_STA_INFO_RX_PACKETS])
4068                 data->rx_packets =
4069                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4070         if (stats[NL80211_STA_INFO_TX_PACKETS])
4071                 data->tx_packets =
4072                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4073
4074         return NL_SKIP;
4075 }
4076
4077 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4078                               const u8 *addr)
4079 {
4080         struct wpa_driver_nl80211_data *drv = priv;
4081         struct nl_msg *msg;
4082
4083         os_memset(data, 0, sizeof(*data));
4084         msg = nlmsg_alloc();
4085         if (!msg)
4086                 return -ENOMEM;
4087
4088         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4089                     0, NL80211_CMD_GET_STATION, 0);
4090
4091         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4092         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4093
4094         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4095  nla_put_failure:
4096         return -ENOBUFS;
4097 }
4098
4099
4100 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4101                                     int cw_min, int cw_max, int burst_time)
4102 {
4103         struct wpa_driver_nl80211_data *drv = priv;
4104         struct nl_msg *msg;
4105         struct nlattr *txq, *params;
4106
4107         msg = nlmsg_alloc();
4108         if (!msg)
4109                 return -1;
4110
4111         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4112                     0, NL80211_CMD_SET_WIPHY, 0);
4113
4114         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4115
4116         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4117         if (!txq)
4118                 goto nla_put_failure;
4119
4120         /* We are only sending parameters for a single TXQ at a time */
4121         params = nla_nest_start(msg, 1);
4122         if (!params)
4123                 goto nla_put_failure;
4124
4125         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4126         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4127          * 32 usec, so need to convert the value here. */
4128         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4129         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4130         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4131         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4132
4133         nla_nest_end(msg, params);
4134
4135         nla_nest_end(msg, txq);
4136
4137         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4138                 return 0;
4139  nla_put_failure:
4140         return -1;
4141 }
4142
4143
4144 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4145 {
4146         struct wpa_driver_nl80211_data *drv = priv;
4147         struct nl_msg *msg;
4148
4149         msg = nlmsg_alloc();
4150         if (!msg)
4151                 return -ENOMEM;
4152
4153         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4154                     NL80211_CMD_SET_BSS, 0);
4155
4156         if (cts >= 0)
4157                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4158         if (preamble >= 0)
4159                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4160         if (slot >= 0)
4161                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4162
4163         /* TODO: multi-BSS support */
4164         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4165
4166         return send_and_recv_msgs(drv, msg, NULL, NULL);
4167  nla_put_failure:
4168         return -ENOBUFS;
4169 }
4170
4171
4172 static int i802_set_cts_protect(void *priv, int value)
4173 {
4174         return i802_set_bss(priv, value, -1, -1);
4175 }
4176
4177
4178 static int i802_set_preamble(void *priv, int value)
4179 {
4180         return i802_set_bss(priv, -1, value, -1);
4181 }
4182
4183
4184 static int i802_set_short_slot_time(void *priv, int value)
4185 {
4186         return i802_set_bss(priv, -1, -1, value);
4187 }
4188
4189
4190 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4191                              const char *ifname, int vlan_id)
4192 {
4193         struct wpa_driver_nl80211_data *drv = priv;
4194         struct nl_msg *msg;
4195
4196         msg = nlmsg_alloc();
4197         if (!msg)
4198                 return -ENOMEM;
4199
4200         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4201                     0, NL80211_CMD_SET_STATION, 0);
4202
4203         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4204                     if_nametoindex(drv->ifname));
4205         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4206         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4207                     if_nametoindex(ifname));
4208
4209         return send_and_recv_msgs(drv, msg, NULL, NULL);
4210  nla_put_failure:
4211         return -ENOBUFS;
4212 }
4213
4214
4215 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4216 {
4217         struct wpa_driver_nl80211_data *drv = priv;
4218         char name[16];
4219
4220         os_snprintf(name, sizeof(name), "%s.sta%d", drv->ifname, aid);
4221         if (val) {
4222                 if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN,
4223                                          NULL, 1) < 0)
4224                         return -1;
4225                 hostapd_set_iface_flags(drv, name, 1);
4226                 return i802_set_sta_vlan(priv, addr, name, 0);
4227         } else {
4228                 i802_set_sta_vlan(priv, addr, drv->ifname, 0);
4229                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4230                                                     name);
4231         }
4232 }
4233
4234
4235 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4236 {
4237         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4238         struct sockaddr_ll lladdr;
4239         unsigned char buf[3000];
4240         int len;
4241         socklen_t fromlen = sizeof(lladdr);
4242
4243         len = recvfrom(sock, buf, sizeof(buf), 0,
4244                        (struct sockaddr *)&lladdr, &fromlen);
4245         if (len < 0) {
4246                 perror("recv");
4247                 return;
4248         }
4249
4250         if (have_ifidx(drv, lladdr.sll_ifindex))
4251                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4252 }
4253
4254
4255 static int i802_get_inact_sec(void *priv, const u8 *addr)
4256 {
4257         struct hostap_sta_driver_data data;
4258         int ret;
4259
4260         data.inactive_msec = (unsigned long) -1;
4261         ret = i802_read_sta_data(priv, &data, addr);
4262         if (ret || data.inactive_msec == (unsigned long) -1)
4263                 return -1;
4264         return data.inactive_msec / 1000;
4265 }
4266
4267
4268 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4269 {
4270 #if 0
4271         /* TODO */
4272 #endif
4273         return 0;
4274 }
4275
4276
4277 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4278                            int reason)
4279 {
4280         struct wpa_driver_nl80211_data *drv = priv;
4281         struct ieee80211_mgmt mgmt;
4282
4283         memset(&mgmt, 0, sizeof(mgmt));
4284         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4285                                           WLAN_FC_STYPE_DEAUTH);
4286         memcpy(mgmt.da, addr, ETH_ALEN);
4287         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4288         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4289         mgmt.u.deauth.reason_code = host_to_le16(reason);
4290         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4291                                             IEEE80211_HDRLEN +
4292                                             sizeof(mgmt.u.deauth));
4293 }
4294
4295
4296 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4297                              int reason)
4298 {
4299         struct wpa_driver_nl80211_data *drv = priv;
4300         struct ieee80211_mgmt mgmt;
4301
4302         memset(&mgmt, 0, sizeof(mgmt));
4303         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4304                                           WLAN_FC_STYPE_DISASSOC);
4305         memcpy(mgmt.da, addr, ETH_ALEN);
4306         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4307         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4308         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4309         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4310                                             IEEE80211_HDRLEN +
4311                                             sizeof(mgmt.u.disassoc));
4312 }
4313
4314
4315 static void *i802_init(struct hostapd_data *hapd,
4316                        struct wpa_init_params *params)
4317 {
4318         struct wpa_driver_nl80211_data *drv;
4319         size_t i;
4320
4321         drv = wpa_driver_nl80211_init(hapd, params->ifname);
4322         if (drv == NULL)
4323                 return NULL;
4324
4325         drv->bss.ifindex = drv->ifindex;
4326
4327         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4328         drv->if_indices = drv->default_if_indices;
4329         for (i = 0; i < params->num_bridge; i++) {
4330                 if (params->bridge[i])
4331                         add_ifidx(drv, if_nametoindex(params->bridge[i]));
4332         }
4333
4334         /* start listening for EAPOL on the default AP interface */
4335         add_ifidx(drv, drv->ifindex);
4336
4337         if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4338                 goto failed;
4339
4340         if (params->bssid) {
4341                 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4342                         goto failed;
4343         }
4344
4345         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4346                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4347                            "into AP mode", drv->ifname);
4348                 goto failed;
4349         }
4350
4351         if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4352                 goto failed;
4353
4354         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4355         if (drv->eapol_sock < 0) {
4356                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4357                 goto failed;
4358         }
4359
4360         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4361         {
4362                 printf("Could not register read socket for eapol\n");
4363                 goto failed;
4364         }
4365
4366         if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4367                 goto failed;
4368
4369         return drv;
4370
4371 failed:
4372         nl80211_remove_monitor_interface(drv);
4373         if (drv->ioctl_sock >= 0)
4374                 close(drv->ioctl_sock);
4375
4376         genl_family_put(drv->nl80211);
4377         nl_cache_free(drv->nl_cache);
4378         nl_handle_destroy(drv->nl_handle);
4379         nl_cb_put(drv->nl_cb);
4380
4381         os_free(drv);
4382         return NULL;
4383 }
4384
4385
4386 static void i802_deinit(void *priv)
4387 {
4388         wpa_driver_nl80211_deinit(priv);
4389 }
4390
4391 #endif /* HOSTAPD */
4392
4393
4394 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4395         enum wpa_driver_if_type type)
4396 {
4397         switch (type) {
4398         case WPA_IF_STATION:
4399                 return NL80211_IFTYPE_STATION;
4400         case WPA_IF_AP_VLAN:
4401                 return NL80211_IFTYPE_AP_VLAN;
4402         case WPA_IF_AP_BSS:
4403                 return NL80211_IFTYPE_AP;
4404         }
4405         return -1;
4406 }
4407
4408
4409 static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4410                                      enum wpa_driver_if_type type,
4411                                      const char *ifname, const u8 *addr,
4412                                      void *bss_ctx)
4413 {
4414         struct wpa_driver_nl80211_data *drv = priv;
4415         int ifidx;
4416 #ifdef HOSTAPD
4417         struct i802_bss *bss = NULL;
4418
4419         if (type == WPA_IF_AP_BSS) {
4420                 bss = os_zalloc(sizeof(*bss));
4421                 if (bss == NULL)
4422                         return -1;
4423         }
4424 #endif /* HOSTAPD */
4425
4426         ifidx = nl80211_create_iface(drv, ifname,
4427                                      wpa_driver_nl80211_if_type(type), addr,
4428                                      0);
4429         if (ifidx < 0) {
4430 #ifdef HOSTAPD
4431                 os_free(bss);
4432 #endif /* HOSTAPD */
4433                 return -1;
4434         }
4435
4436 #ifdef HOSTAPD
4437         if (type == WPA_IF_AP_BSS) {
4438                 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4439                         nl80211_remove_iface(priv, ifidx);
4440                         os_free(bss);
4441                         return -1;
4442                 }
4443                 bss->ifindex = ifidx;
4444                 bss->next = drv->bss.next;
4445                 drv->bss.next = bss;
4446         }
4447 #endif /* HOSTAPD */
4448
4449         return 0;
4450 }
4451
4452
4453 static int wpa_driver_nl80211_if_remove(void *priv,
4454                                         enum wpa_driver_if_type type,
4455                                         const char *ifname)
4456 {
4457         struct wpa_driver_nl80211_data *drv = priv;
4458         int ifindex = if_nametoindex(ifname);
4459
4460         nl80211_remove_iface(drv, ifindex);
4461
4462 #ifdef HOSTAPD
4463         if (type == WPA_IF_AP_BSS) {
4464                 struct i802_bss *bss, *prev;
4465                 prev = &drv->bss;
4466                 bss = drv->bss.next;
4467                 while (bss) {
4468                         if (ifindex == bss->ifindex) {
4469                                 prev->next = bss->next;
4470                                 os_free(bss);
4471                                 break;
4472                         }
4473                         prev = bss;
4474                         bss = bss->next;
4475                 }
4476         }
4477 #endif /* HOSTAPD */
4478
4479         return 0;
4480 }
4481
4482
4483 static int cookie_handler(struct nl_msg *msg, void *arg)
4484 {
4485         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4486         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4487         u64 *cookie = arg;
4488         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4489                   genlmsg_attrlen(gnlh, 0), NULL);
4490         if (tb[NL80211_ATTR_COOKIE])
4491                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4492         return NL_SKIP;
4493 }
4494
4495
4496 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4497                                                 unsigned int duration)
4498 {
4499         struct wpa_driver_nl80211_data *drv = priv;
4500         struct nl_msg *msg;
4501         int ret;
4502         u64 cookie;
4503
4504         msg = nlmsg_alloc();
4505         if (!msg)
4506                 return -1;
4507
4508         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4509                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4510
4511         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4512         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4513         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4514
4515         cookie = 0;
4516         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4517         if (ret == 0) {
4518                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4519                            "0x%llx for freq=%u MHz duration=%u",
4520                            (long long unsigned int) cookie, freq, duration);
4521                 drv->remain_on_chan_cookie = cookie;
4522                 return 0;
4523         }
4524         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4525                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4526 nla_put_failure:
4527         return -1;
4528 }
4529
4530
4531 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4532 {
4533         struct wpa_driver_nl80211_data *drv = priv;
4534         struct nl_msg *msg;
4535         int ret;
4536
4537         if (!drv->pending_remain_on_chan) {
4538                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4539                            "to cancel");
4540                 return -1;
4541         }
4542
4543         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4544                    "0x%llx",
4545                    (long long unsigned int) drv->remain_on_chan_cookie);
4546
4547         msg = nlmsg_alloc();
4548         if (!msg)
4549                 return -1;
4550
4551         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4552                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4553
4554         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4555         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4556
4557         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4558         if (ret == 0)
4559                 return 0;
4560         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4561                    "%d (%s)", ret, strerror(-ret));
4562 nla_put_failure:
4563         return -1;
4564 }
4565
4566
4567 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4568                                                         void *timeout_ctx)
4569 {
4570         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4571         if (drv->monitor_ifidx < 0)
4572                 return; /* monitor interface already removed */
4573
4574         if (drv->nlmode != NL80211_IFTYPE_STATION)
4575                 return; /* not in station mode anymore */
4576
4577         if (drv->probe_req_report)
4578                 return; /* reporting enabled */
4579
4580         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4581                    "Probe Request reporting needed anymore");
4582         nl80211_remove_monitor_interface(drv);
4583 }
4584
4585
4586 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4587 {
4588         struct wpa_driver_nl80211_data *drv = priv;
4589
4590         if (drv->nlmode != NL80211_IFTYPE_STATION) {
4591                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4592                            "allowed in station mode (iftype=%d)",
4593                            drv->nlmode);
4594                 return -1;
4595         }
4596         drv->probe_req_report = report;
4597
4598         if (report) {
4599                 eloop_cancel_timeout(
4600                         wpa_driver_nl80211_probe_req_report_timeout,
4601                         drv, NULL);
4602                 if (drv->monitor_ifidx < 0 &&
4603                     nl80211_create_monitor_interface(drv))
4604                         return -1;
4605         } else {
4606                 /*
4607                  * It takes a while to remove the monitor interface, so try to
4608                  * avoid doing this if it is needed again shortly. Instead,
4609                  * schedule the interface to be removed later if no need for it
4610                  * is seen.
4611                  */
4612                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4613                            "to be removed after 10 seconds of no use");
4614                 eloop_register_timeout(
4615                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4616                         drv, NULL);
4617         }
4618
4619         return 0;
4620 }
4621
4622
4623 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr)
4624 {
4625         struct wpa_driver_nl80211_data *drv = priv;
4626
4627         if (get_ifhwaddr(drv, drv->ifname, addr) < 0)
4628                 return -1;
4629
4630         if (addr[0] & 0x02) {
4631                 /* TODO: add support for generating multiple addresses */
4632                 addr[0] ^= 0x80;
4633         } else
4634                 addr[0] = 0x02; /* locally administered */
4635
4636         return 0;
4637 }
4638
4639
4640 static void wpa_driver_nl80211_release_interface_addr(void *priv,
4641                                                       const u8 *addr)
4642 {
4643         /* TODO: keep list of allocated address and release them here */
4644 }
4645
4646
4647 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4648         .name = "nl80211",
4649         .desc = "Linux nl80211/cfg80211",
4650         .get_bssid = wpa_driver_nl80211_get_bssid,
4651         .get_ssid = wpa_driver_nl80211_get_ssid,
4652         .set_key = wpa_driver_nl80211_set_key,
4653         .scan2 = wpa_driver_nl80211_scan,
4654         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4655         .deauthenticate = wpa_driver_nl80211_deauthenticate,
4656         .disassociate = wpa_driver_nl80211_disassociate,
4657         .authenticate = wpa_driver_nl80211_authenticate,
4658         .associate = wpa_driver_nl80211_associate,
4659         .init = wpa_driver_nl80211_init,
4660         .deinit = wpa_driver_nl80211_deinit,
4661         .get_capa = wpa_driver_nl80211_get_capa,
4662         .set_operstate = wpa_driver_nl80211_set_operstate,
4663         .set_supp_port = wpa_driver_nl80211_set_supp_port,
4664         .set_country = wpa_driver_nl80211_set_country,
4665         .set_beacon = wpa_driver_nl80211_set_beacon,
4666         .if_add = wpa_driver_nl80211_if_add,
4667         .if_remove = wpa_driver_nl80211_if_remove,
4668         .send_mlme = wpa_driver_nl80211_send_mlme,
4669         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4670         .sta_add = wpa_driver_nl80211_sta_add,
4671         .sta_remove = wpa_driver_nl80211_sta_remove,
4672         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4673         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4674 #ifdef HOSTAPD
4675         .hapd_init = i802_init,
4676         .hapd_deinit = i802_deinit,
4677         .get_seqnum = i802_get_seqnum,
4678         .flush = i802_flush,
4679         .read_sta_data = i802_read_sta_data,
4680         .sta_deauth = i802_sta_deauth,
4681         .sta_disassoc = i802_sta_disassoc,
4682         .get_inact_sec = i802_get_inact_sec,
4683         .sta_clear_stats = i802_sta_clear_stats,
4684         .set_freq = i802_set_freq,
4685         .set_rts = i802_set_rts,
4686         .set_frag = i802_set_frag,
4687         .set_rate_sets = i802_set_rate_sets,
4688         .set_cts_protect = i802_set_cts_protect,
4689         .set_preamble = i802_set_preamble,
4690         .set_short_slot_time = i802_set_short_slot_time,
4691         .set_tx_queue_params = i802_set_tx_queue_params,
4692         .set_sta_vlan = i802_set_sta_vlan,
4693         .set_wds_sta = i802_set_wds_sta,
4694 #endif /* HOSTAPD */
4695         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
4696         .cancel_remain_on_channel =
4697         wpa_driver_nl80211_cancel_remain_on_channel,
4698         .probe_req_report = wpa_driver_nl80211_probe_req_report,
4699         .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
4700         .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4701 };