src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2008, 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 "nl80211_copy.h"
  27 #ifndef NO_WEXT
  28 #include "wireless_copy.h"
  29 #endif /* NO_WEXT */
  30
  31 #include "common.h"
  32 #include "driver.h"
  33 #include "eloop.h"
  34 #include "ieee802_11_defs.h"
  35
  36 #if defined(CONFIG_AP) || defined(HOSTAPD)
  37 #include <netpacket/packet.h>
  38 #include <linux/filter.h>
  39 #include "radiotap.h"
  40 #include "radiotap_iter.h"
  41
  42 #include "../../hostapd/hostapd_defs.h"
  43 #include "../../hostapd/sta_flags.h"
  44 #endif /* CONFIG_AP || HOSTAPD */
  45
  46 #ifdef HOSTAPD
  47 #include "ieee802_11_common.h"
  48 #endif /* HOSTAPD */
  49
  50 #ifdef CONFIG_LIBNL20
  51 /* libnl 2.0 compatibility code */
  52 #define nl_handle nl_sock
  53 #define nl_handle_alloc_cb nl_socket_alloc_cb
  54 #define nl_handle_destroy nl_socket_free
  55 #endif /* CONFIG_LIBNL20 */
  56
  57
  58 #ifndef IFF_LOWER_UP
  59 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  60 #endif
  61 #ifndef IFF_DORMANT
  62 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  63 #endif
  64
  65 #ifndef IF_OPER_DORMANT
  66 #define IF_OPER_DORMANT 5
  67 #endif
  68 #ifndef IF_OPER_UP
  69 #define IF_OPER_UP 6
  70 #endif
  71
  72 struct i802_bss {
  73         struct i802_bss *next;
  74         int ifindex;
  75         unsigned int beacon_set:1;
  76 };
  77
  78 struct wpa_driver_nl80211_data {
  79         void *ctx;
  80         int link_event_sock;
  81         int ioctl_sock; /* socket for ioctl() use */
  82         char ifname[IFNAMSIZ + 1];
  83         int ifindex;
  84         int if_removed;
  85         struct wpa_driver_capa capa;
  86         int has_capability;
  87
  88         int operstate;
  89
  90         int scan_complete_events;
  91
  92         struct nl_handle *nl_handle;
  93         struct nl_handle *nl_handle_event;
  94         struct nl_cache *nl_cache;
  95         struct nl_cache *nl_cache_event;
  96         struct nl_cb *nl_cb;
  97         struct genl_family *nl80211;
  98
  99         u8 bssid[ETH_ALEN];
 100         int associated;
 101         u8 ssid[32];
 102         size_t ssid_len;
 103         int nlmode;
 104         int ap_scan_as_station;
 105
 106         int beacon_int;
 107         int monitor_sock;
 108         int monitor_ifidx;
 109
 110 #ifdef CONFIG_AP
 111         unsigned int beacon_set:1;
 112 #endif /* CONFIG_AP */
 113
 114 #ifdef HOSTAPD
 115         int eapol_sock; /* socket for EAPOL frames */
 116
 117         int default_if_indices[16];
 118         int *if_indices;
 119         int num_if_indices;
 120
 121         struct i802_bss bss;
 122
 123         int last_freq;
 124         int last_freq_ht;
 125 #endif /* HOSTAPD */
 126 };
 127
 128
 129 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 130                                             void *timeout_ctx);
 131 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 132 static int
 133 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 134
 135 #if defined(CONFIG_AP) || defined(HOSTAPD)
 136 static void nl80211_remove_monitor_interface(
 137         struct wpa_driver_nl80211_data *drv);
 138 #endif /* CONFIG_AP || HOSTAPD */
 139
 140 #ifdef CONFIG_AP
 141 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
 142                                  int ifidx);
 143 #endif /* CONFIG_AP */
 144
 145 #ifdef HOSTAPD
 146 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 147 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 148 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
 149                                  int ifindex);
 150 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
 151                                  int ifidx);
 152 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 153 #endif /* HOSTAPD */
 154
 155
 156 /* nl80211 code */
 157 static int ack_handler(struct nl_msg *msg, void *arg)
 158 {
 159         int *err = arg;
 160         *err = 0;
 161         return NL_STOP;
 162 }
 163
 164 static int finish_handler(struct nl_msg *msg, void *arg)
 165 {
 166         int *ret = arg;
 167         *ret = 0;
 168         return NL_SKIP;
 169 }
 170
 171 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 172                          void *arg)
 173 {
 174         int *ret = arg;
 175         *ret = err->error;
 176         return NL_SKIP;
 177 }
 178
 179
 180 static int no_seq_check(struct nl_msg *msg, void *arg)
 181 {
 182         return NL_OK;
 183 }
 184
 185
 186 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 187                               struct nl_msg *msg,
 188                               int (*valid_handler)(struct nl_msg *, void *),
 189                               void *valid_data)
 190 {
 191         struct nl_cb *cb;
 192         int err = -ENOMEM;
 193
 194         cb = nl_cb_clone(drv->nl_cb);
 195         if (!cb)
 196                 goto out;
 197
 198         err = nl_send_auto_complete(drv->nl_handle, msg);
 199         if (err < 0)
 200                 goto out;
 201
 202         err = 1;
 203
 204         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 205         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 206         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 207
 208         if (valid_handler)
 209                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 210                           valid_handler, valid_data);
 211
 212         while (err > 0)
 213                 nl_recvmsgs(drv->nl_handle, cb);
 214  out:
 215         nl_cb_put(cb);
 216         nlmsg_free(msg);
 217         return err;
 218 }
 219
 220
 221 struct family_data {
 222         const char *group;
 223         int id;
 224 };
 225
 226
 227 static int family_handler(struct nl_msg *msg, void *arg)
 228 {
 229         struct family_data *res = arg;
 230         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 231         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 232         struct nlattr *mcgrp;
 233         int i;
 234
 235         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 236                   genlmsg_attrlen(gnlh, 0), NULL);
 237         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 238                 return NL_SKIP;
 239
 240         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 241                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 242                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 243                           nla_len(mcgrp), NULL);
 244                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 245                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 246                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 247                                res->group,
 248                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 249                         continue;
 250                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 251                 break;
 252         };
 253
 254         return NL_SKIP;
 255 }
 256
 257
 258 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 259                                const char *family, const char *group)
 260 {
 261         struct nl_msg *msg;
 262         int ret = -1;
 263         struct family_data res = { group, -ENOENT };
 264
 265         msg = nlmsg_alloc();
 266         if (!msg)
 267                 return -ENOMEM;
 268         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 269                     0, 0, CTRL_CMD_GETFAMILY, 0);
 270         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 271
 272         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 273         msg = NULL;
 274         if (ret == 0)
 275                 ret = res.id;
 276
 277 nla_put_failure:
 278         nlmsg_free(msg);
 279         return ret;
 280 }
 281
 282
 283 #ifdef HOSTAPD
 284 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 285                         const char *ifname, u8 *addr)
 286 {
 287         struct ifreq ifr;
 288
 289         os_memset(&ifr, 0, sizeof(ifr));
 290         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 291         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
 292                 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
 293                            ifname, errno, strerror(errno));
 294                 return -1;
 295         }
 296
 297         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
 298                 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
 299                            ifname, ifr.ifr_hwaddr.sa_family);
 300                 return -1;
 301         }
 302         os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
 303
 304         return 0;
 305 }
 306
 307
 308 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 309                         const char *ifname, const u8 *addr)
 310 {
 311         struct ifreq ifr;
 312
 313         os_memset(&ifr, 0, sizeof(ifr));
 314         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 315         os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
 316         ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
 317
 318         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
 319                 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
 320                            ifname, errno, strerror(errno));
 321                 return -1;
 322         }
 323
 324         return 0;
 325 }
 326 #endif /* HOSTAPD */
 327
 328
 329 #ifndef HOSTAPD
 330
 331 static int wpa_driver_nl80211_send_oper_ifla(
 332         struct wpa_driver_nl80211_data *drv,
 333         int linkmode, int operstate)
 334 {
 335         struct {
 336                 struct nlmsghdr hdr;
 337                 struct ifinfomsg ifinfo;
 338                 char opts[16];
 339         } req;
 340         struct rtattr *rta;
 341         static int nl_seq;
 342         ssize_t ret;
 343
 344         os_memset(&req, 0, sizeof(req));
 345
 346         req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
 347         req.hdr.nlmsg_type = RTM_SETLINK;
 348         req.hdr.nlmsg_flags = NLM_F_REQUEST;
 349         req.hdr.nlmsg_seq = ++nl_seq;
 350         req.hdr.nlmsg_pid = 0;
 351
 352         req.ifinfo.ifi_family = AF_UNSPEC;
 353         req.ifinfo.ifi_type = 0;
 354         req.ifinfo.ifi_index = drv->ifindex;
 355         req.ifinfo.ifi_flags = 0;
 356         req.ifinfo.ifi_change = 0;
 357
 358         if (linkmode != -1) {
 359                 rta = (struct rtattr *)
 360                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
 361                 rta->rta_type = IFLA_LINKMODE;
 362                 rta->rta_len = RTA_LENGTH(sizeof(char));
 363                 *((char *) RTA_DATA(rta)) = linkmode;
 364                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
 365                         RTA_LENGTH(sizeof(char));
 366         }
 367         if (operstate != -1) {
 368                 rta = (struct rtattr *)
 369                         ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
 370                 rta->rta_type = IFLA_OPERSTATE;
 371                 rta->rta_len = RTA_LENGTH(sizeof(char));
 372                 *((char *) RTA_DATA(rta)) = operstate;
 373                 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
 374                         RTA_LENGTH(sizeof(char));
 375         }
 376
 377         wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
 378                    linkmode, operstate);
 379
 380         ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
 381         if (ret < 0) {
 382                 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
 383                            " %s (assume operstate is not supported)",
 384                            strerror(errno));
 385         }
 386
 387         return ret < 0 ? -1 : 0;
 388 }
 389
 390
 391 #ifndef NO_WEXT
 392 static int wpa_driver_nl80211_set_auth_param(
 393         struct wpa_driver_nl80211_data *drv, int idx, u32 value)
 394 {
 395         struct iwreq iwr;
 396         int ret = 0;
 397
 398         os_memset(&iwr, 0, sizeof(iwr));
 399         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 400         iwr.u.param.flags = idx & IW_AUTH_INDEX;
 401         iwr.u.param.value = value;
 402
 403         if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
 404                 if (errno != EOPNOTSUPP) {
 405                         wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
 406                                    "value 0x%x) failed: %s)",
 407                                    idx, value, strerror(errno));
 408                 }
 409                 ret = errno == EOPNOTSUPP ? -2 : -1;
 410         }
 411
 412         return ret;
 413 }
 414 #endif /* NO_WEXT */
 415
 416
 417 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 418 {
 419         struct wpa_driver_nl80211_data *drv = priv;
 420         if (!drv->associated)
 421                 return -1;
 422         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 423         return 0;
 424 }
 425
 426
 427 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 428 {
 429         struct wpa_driver_nl80211_data *drv = priv;
 430         if (!drv->associated)
 431                 return -1;
 432         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 433         return drv->ssid_len;
 434 }
 435
 436
 437 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 438                                           void *ctx, char *buf, size_t len,
 439                                           int del)
 440 {
 441         union wpa_event_data event;
 442
 443         os_memset(&event, 0, sizeof(event));
 444         if (len > sizeof(event.interface_status.ifname))
 445                 len = sizeof(event.interface_status.ifname) - 1;
 446         os_memcpy(event.interface_status.ifname, buf, len);
 447         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 448                 EVENT_INTERFACE_ADDED;
 449
 450         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 451                    del ? "DEL" : "NEW",
 452                    event.interface_status.ifname,
 453                    del ? "removed" : "added");
 454
 455         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 456                 if (del)
 457                         drv->if_removed = 1;
 458                 else
 459                         drv->if_removed = 0;
 460         }
 461
 462         wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
 463 }
 464
 465
 466 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 467                                          struct nlmsghdr *h)
 468 {
 469         struct ifinfomsg *ifi;
 470         int attrlen, _nlmsg_len, rta_len;
 471         struct rtattr *attr;
 472
 473         ifi = NLMSG_DATA(h);
 474
 475         _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 476
 477         attrlen = h->nlmsg_len - _nlmsg_len;
 478         if (attrlen < 0)
 479                 return 0;
 480
 481         attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
 482
 483         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 484         while (RTA_OK(attr, attrlen)) {
 485                 if (attr->rta_type == IFLA_IFNAME) {
 486                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 487                             == 0)
 488                                 return 1;
 489                         else
 490                                 break;
 491                 }
 492                 attr = RTA_NEXT(attr, attrlen);
 493         }
 494
 495         return 0;
 496 }
 497
 498
 499 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 500                                           int ifindex, struct nlmsghdr *h)
 501 {
 502         if (drv->ifindex == ifindex)
 503                 return 1;
 504
 505         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
 506                 drv->ifindex = if_nametoindex(drv->ifname);
 507                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 508                            "interface");
 509                 wpa_driver_nl80211_finish_drv_init(drv);
 510                 return 1;
 511         }
 512
 513         return 0;
 514 }
 515
 516
 517 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
 518                                               void *ctx, struct nlmsghdr *h,
 519                                               size_t len)
 520 {
 521         struct ifinfomsg *ifi;
 522         int attrlen, _nlmsg_len, rta_len;
 523         struct rtattr * attr;
 524
 525         if (len < sizeof(*ifi))
 526                 return;
 527
 528         ifi = NLMSG_DATA(h);
 529
 530         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
 531                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 532                            ifi->ifi_index);
 533                 return;
 534         }
 535
 536         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 537                    "(%s%s%s%s)",
 538                    drv->operstate, ifi->ifi_flags,
 539                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 540                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 541                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 542                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 543         /*
 544          * Some drivers send the association event before the operup event--in
 545          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 546          * fails. This will hit us when wpa_supplicant does not need to do
 547          * IEEE 802.1X authentication
 548          */
 549         if (drv->operstate == 1 &&
 550             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 551             !(ifi->ifi_flags & IFF_RUNNING))
 552                 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
 553
 554         _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 555
 556         attrlen = h->nlmsg_len - _nlmsg_len;
 557         if (attrlen < 0)
 558                 return;
 559
 560         attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
 561
 562         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 563         while (RTA_OK(attr, attrlen)) {
 564                 if (attr->rta_type == IFLA_IFNAME) {
 565                         wpa_driver_nl80211_event_link(
 566                                 drv, ctx,
 567                                 ((char *) attr) + rta_len,
 568                                 attr->rta_len - rta_len, 0);
 569                 }
 570                 attr = RTA_NEXT(attr, attrlen);
 571         }
 572 }
 573
 574
 575 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
 576                                               void *ctx, struct nlmsghdr *h,
 577                                               size_t len)
 578 {
 579         struct ifinfomsg *ifi;
 580         int attrlen, _nlmsg_len, rta_len;
 581         struct rtattr * attr;
 582
 583         if (len < sizeof(*ifi))
 584                 return;
 585
 586         ifi = NLMSG_DATA(h);
 587
 588         _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 589
 590         attrlen = h->nlmsg_len - _nlmsg_len;
 591         if (attrlen < 0)
 592                 return;
 593
 594         attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
 595
 596         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 597         while (RTA_OK(attr, attrlen)) {
 598                 if (attr->rta_type == IFLA_IFNAME) {
 599                         wpa_driver_nl80211_event_link(
 600                                 drv, ctx,
 601                                 ((char *) attr) + rta_len,
 602                                 attr->rta_len - rta_len, 1);
 603                 }
 604                 attr = RTA_NEXT(attr, attrlen);
 605         }
 606 }
 607
 608
 609 static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
 610                                                   void *sock_ctx)
 611 {
 612         char buf[8192];
 613         int left;
 614         struct sockaddr_nl from;
 615         socklen_t fromlen;
 616         struct nlmsghdr *h;
 617         int max_events = 10;
 618
 619 try_again:
 620         fromlen = sizeof(from);
 621         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
 622                         (struct sockaddr *) &from, &fromlen);
 623         if (left < 0) {
 624                 if (errno != EINTR && errno != EAGAIN)
 625                         perror("recvfrom(netlink)");
 626                 return;
 627         }
 628
 629         h = (struct nlmsghdr *) buf;
 630         while (left >= (int) sizeof(*h)) {
 631                 int len, plen;
 632
 633                 len = h->nlmsg_len;
 634                 plen = len - sizeof(*h);
 635                 if (len > left || plen < 0) {
 636                         wpa_printf(MSG_DEBUG, "Malformed netlink message: "
 637                                    "len=%d left=%d plen=%d",
 638                                    len, left, plen);
 639                         break;
 640                 }
 641
 642                 switch (h->nlmsg_type) {
 643                 case RTM_NEWLINK:
 644                         wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
 645                                                           h, plen);
 646                         break;
 647                 case RTM_DELLINK:
 648                         wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
 649                                                           h, plen);
 650                         break;
 651                 }
 652
 653                 len = NLMSG_ALIGN(len);
 654                 left -= len;
 655                 h = (struct nlmsghdr *) ((char *) h + len);
 656         }
 657
 658         if (left > 0) {
 659                 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
 660                            "message", left);
 661         }
 662
 663         if (--max_events > 0) {
 664                 /*
 665                  * Try to receive all events in one eloop call in order to
 666                  * limit race condition on cases where AssocInfo event, Assoc
 667                  * event, and EAPOL frames are received more or less at the
 668                  * same time. We want to process the event messages first
 669                  * before starting EAPOL processing.
 670                  */
 671                 goto try_again;
 672         }
 673 }
 674
 675
 676 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 677                             const u8 *frame, size_t len)
 678 {
 679         const struct ieee80211_mgmt *mgmt;
 680         union wpa_event_data event;
 681
 682         mgmt = (const struct ieee80211_mgmt *) frame;
 683         if (len < 24 + sizeof(mgmt->u.auth)) {
 684                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 685                            "frame");
 686                 return;
 687         }
 688
 689         os_memset(&event, 0, sizeof(event));
 690         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 691         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 692         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 693         if (len > 24 + sizeof(mgmt->u.auth)) {
 694                 event.auth.ies = mgmt->u.auth.variable;
 695                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 696         }
 697
 698         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 699 }
 700
 701
 702 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 703                             const u8 *frame, size_t len)
 704 {
 705         const struct ieee80211_mgmt *mgmt;
 706         union wpa_event_data event;
 707         u16 status;
 708
 709         mgmt = (const struct ieee80211_mgmt *) frame;
 710         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 711                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 712                            "frame");
 713                 return;
 714         }
 715
 716         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 717         if (status != WLAN_STATUS_SUCCESS) {
 718                 os_memset(&event, 0, sizeof(event));
 719                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 720                         event.assoc_reject.resp_ies =
 721                                 (u8 *) mgmt->u.assoc_resp.variable;
 722                         event.assoc_reject.resp_ies_len =
 723                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 724                 }
 725                 event.assoc_reject.status_code = status;
 726
 727                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 728                 return;
 729         }
 730
 731         drv->associated = 1;
 732         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 733
 734         os_memset(&event, 0, sizeof(event));
 735         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 736                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 737                 event.assoc_info.resp_ies_len =
 738                         len - 24 - sizeof(mgmt->u.assoc_resp);
 739         }
 740
 741         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 742 }
 743
 744
 745 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 746                                enum nl80211_commands cmd, struct nlattr *addr)
 747 {
 748         union wpa_event_data event;
 749         enum wpa_event_type ev;
 750
 751         if (nla_len(addr) != ETH_ALEN)
 752                 return;
 753
 754         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 755                    cmd, MAC2STR((u8 *) nla_data(addr)));
 756
 757         if (cmd == NL80211_CMD_AUTHENTICATE)
 758                 ev = EVENT_AUTH_TIMED_OUT;
 759         else if (cmd == NL80211_CMD_ASSOCIATE)
 760                 ev = EVENT_ASSOC_TIMED_OUT;
 761         else
 762                 return;
 763
 764         os_memset(&event, 0, sizeof(event));
 765         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 766         wpa_supplicant_event(drv->ctx, ev, &event);
 767 }
 768
 769
 770 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 771                        enum nl80211_commands cmd, struct nlattr *frame,
 772                        struct nlattr *addr, struct nlattr *timed_out)
 773 {
 774         if (timed_out && addr) {
 775                 mlme_timeout_event(drv, cmd, addr);
 776                 return;
 777         }
 778
 779         if (frame == NULL) {
 780                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 781                            "data", cmd);
 782                 return;
 783         }
 784
 785         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 786         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 787                     nla_data(frame), nla_len(frame));
 788
 789         switch (cmd) {
 790         case NL80211_CMD_AUTHENTICATE:
 791                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 792                 break;
 793         case NL80211_CMD_ASSOCIATE:
 794                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 795                 break;
 796         case NL80211_CMD_DEAUTHENTICATE:
 797                 drv->associated = 0;
 798                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 799                 break;
 800         case NL80211_CMD_DISASSOCIATE:
 801                 drv->associated = 0;
 802                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 803                 break;
 804         default:
 805                 break;
 806         }
 807 }
 808
 809 #endif /* HOSTAPD */
 810
 811
 812 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 813                                            struct nlattr *tb[])
 814 {
 815         union wpa_event_data data;
 816
 817         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 818         os_memset(&data, 0, sizeof(data));
 819         if (tb[NL80211_ATTR_MAC]) {
 820                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 821                             nla_data(tb[NL80211_ATTR_MAC]),
 822                             nla_len(tb[NL80211_ATTR_MAC]));
 823                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 824         }
 825         if (tb[NL80211_ATTR_KEY_SEQ]) {
 826                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 827                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 828                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 829         }
 830         if (tb[NL80211_ATTR_KEY_TYPE]) {
 831                 enum nl80211_key_type key_type =
 832                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 833                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 834                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 835                         data.michael_mic_failure.unicast = 1;
 836         } else
 837                 data.michael_mic_failure.unicast = 1;
 838
 839         if (tb[NL80211_ATTR_KEY_IDX]) {
 840                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 841                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 842         }
 843
 844         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 845 }
 846
 847
 848 static int process_event(struct nl_msg *msg, void *arg)
 849 {
 850         struct wpa_driver_nl80211_data *drv = arg;
 851         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 852         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 853
 854         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 855                   genlmsg_attrlen(gnlh, 0), NULL);
 856
 857         if (tb[NL80211_ATTR_IFINDEX]) {
 858                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 859                 if (ifindex != drv->ifindex) {
 860                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 861                                    " for foreign interface (ifindex %d)",
 862                                    gnlh->cmd, ifindex);
 863                         return NL_SKIP;
 864                 }
 865         }
 866
 867         if (drv->ap_scan_as_station &&
 868             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 869              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 870                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
 871                 drv->ap_scan_as_station = 0;
 872         }
 873
 874         switch (gnlh->cmd) {
 875         case NL80211_CMD_NEW_SCAN_RESULTS:
 876                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 877                 drv->scan_complete_events = 1;
 878                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 879                                      drv->ctx);
 880                 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
 881                 break;
 882         case NL80211_CMD_SCAN_ABORTED:
 883                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 884                 /*
 885                  * Need to indicate that scan results are available in order
 886                  * not to make wpa_supplicant stop its scanning.
 887                  */
 888                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 889                                      drv->ctx);
 890                 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
 891                 break;
 892 #ifndef HOSTAPD
 893         case NL80211_CMD_AUTHENTICATE:
 894         case NL80211_CMD_ASSOCIATE:
 895         case NL80211_CMD_DEAUTHENTICATE:
 896         case NL80211_CMD_DISASSOCIATE:
 897                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 898                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
 899                 break;
 900 #endif /* HOSTAPD */
 901         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 902                 mlme_event_michael_mic_failure(drv, tb);
 903                 break;
 904         default:
 905                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 906                            "(cmd=%d)", gnlh->cmd);
 907                 break;
 908         }
 909
 910         return NL_SKIP;
 911 }
 912
 913
 914 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 915                                              void *sock_ctx)
 916 {
 917         struct nl_cb *cb;
 918         struct wpa_driver_nl80211_data *drv = eloop_ctx;
 919
 920         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
 921
 922         cb = nl_cb_clone(drv->nl_cb);
 923         if (!cb)
 924                 return;
 925         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 926         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
 927         nl_recvmsgs(drv->nl_handle_event, cb);
 928         nl_cb_put(cb);
 929 }
 930
 931
 932 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
 933                                    const char *ifname, int dev_up)
 934 {
 935         struct ifreq ifr;
 936
 937         if (drv->ioctl_sock < 0)
 938                 return -1;
 939
 940         os_memset(&ifr, 0, sizeof(ifr));
 941         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 942
 943         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 944                 perror("ioctl[SIOCGIFFLAGS]");
 945                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 946                            ifname);
 947                 return -1;
 948         }
 949
 950         if (dev_up) {
 951                 if (ifr.ifr_flags & IFF_UP)
 952                         return 0;
 953                 ifr.ifr_flags |= IFF_UP;
 954         } else {
 955                 if (!(ifr.ifr_flags & IFF_UP))
 956                         return 0;
 957                 ifr.ifr_flags &= ~IFF_UP;
 958         }
 959
 960         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 961                 perror("ioctl[SIOCSIFFLAGS]");
 962                 return -1;
 963         }
 964
 965         return 0;
 966 }
 967
 968
 969 /**
 970  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
 971  * @priv: driver_nl80211 private data
 972  * @alpha2_arg: country to which to switch to
 973  * Returns: 0 on success, -1 on failure
 974  *
 975  * This asks nl80211 to set the regulatory domain for given
 976  * country ISO / IEC alpha2.
 977  */
 978 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
 979 {
 980         struct wpa_driver_nl80211_data *drv = priv;
 981         char alpha2[3];
 982         struct nl_msg *msg;
 983
 984         msg = nlmsg_alloc();
 985         if (!msg)
 986                 return -ENOMEM;
 987
 988         alpha2[0] = alpha2_arg[0];
 989         alpha2[1] = alpha2_arg[1];
 990         alpha2[2] = '\0';
 991
 992         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 993                     0, NL80211_CMD_REQ_SET_REG, 0);
 994
 995         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
 996         if (send_and_recv_msgs(drv, msg, NULL, NULL))
 997                 return -EINVAL;
 998         return 0;
 999 nla_put_failure:
1000         return -EINVAL;
1001 }
1002
1003
1004 #ifndef HOSTAPD
1005 struct wiphy_info_data {
1006         int max_scan_ssids;
1007         int ap_supported;
1008         int auth_supported;
1009         int connect_supported;
1010 };
1011
1012
1013 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1014 {
1015         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1016         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1017         struct wiphy_info_data *info = arg;
1018
1019         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1020                   genlmsg_attrlen(gnlh, 0), NULL);
1021
1022         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1023                 info->max_scan_ssids =
1024                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1025
1026         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1027                 struct nlattr *nl_mode;
1028                 int i;
1029                 nla_for_each_nested(nl_mode,
1030                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1031                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1032                                 info->ap_supported = 1;
1033                                 break;
1034                         }
1035                 }
1036         }
1037
1038         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1039                 struct nlattr *nl_cmd;
1040                 int i;
1041
1042                 nla_for_each_nested(nl_cmd,
1043                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1044                         u32 cmd = nla_get_u32(nl_cmd);
1045                         if (cmd == NL80211_CMD_AUTHENTICATE)
1046                                 info->auth_supported = 1;
1047                         else if (cmd == NL80211_CMD_CONNECT)
1048                                 info->connect_supported = 1;
1049                 }
1050         }
1051
1052         return NL_SKIP;
1053 }
1054
1055
1056 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1057                                        struct wiphy_info_data *info)
1058 {
1059         struct nl_msg *msg;
1060
1061         os_memset(info, 0, sizeof(*info));
1062         msg = nlmsg_alloc();
1063         if (!msg)
1064                 return -1;
1065
1066         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1067                     0, NL80211_CMD_GET_WIPHY, 0);
1068
1069         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1070
1071         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1072                 return 0;
1073         msg = NULL;
1074 nla_put_failure:
1075         nlmsg_free(msg);
1076         return -1;
1077 }
1078
1079
1080 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1081 {
1082         struct wiphy_info_data info;
1083         if (wpa_driver_nl80211_get_info(drv, &info))
1084                 return -1;
1085         drv->has_capability = 1;
1086         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1087         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1088                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1089                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1090                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1091         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1092                 WPA_DRIVER_CAPA_ENC_WEP104 |
1093                 WPA_DRIVER_CAPA_ENC_TKIP |
1094                 WPA_DRIVER_CAPA_ENC_CCMP;
1095
1096         drv->capa.max_scan_ssids = info.max_scan_ssids;
1097         if (info.ap_supported)
1098                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1099
1100         if (info.auth_supported)
1101                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1102         else if (!info.connect_supported) {
1103                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1104                            "authentication/association or connect commands");
1105                 return -1;
1106         }
1107
1108         return 0;
1109 }
1110 #endif /* HOSTAPD */
1111
1112
1113 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1114                                       void *ctx)
1115 {
1116         int ret;
1117
1118         /* Initialize generic netlink and nl80211 */
1119
1120         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1121         if (drv->nl_cb == NULL) {
1122                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1123                            "callbacks");
1124                 goto err1;
1125         }
1126
1127         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1128         if (drv->nl_handle == NULL) {
1129                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1130                            "callbacks");
1131                 goto err2;
1132         }
1133
1134         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1135         if (drv->nl_handle_event == NULL) {
1136                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1137                            "callbacks (event)");
1138                 goto err2b;
1139         }
1140
1141         if (genl_connect(drv->nl_handle)) {
1142                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1143                            "netlink");
1144                 goto err3;
1145         }
1146
1147         if (genl_connect(drv->nl_handle_event)) {
1148                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1149                            "netlink (event)");
1150                 goto err3;
1151         }
1152
1153 #ifdef CONFIG_LIBNL20
1154         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1155                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1156                            "netlink cache");
1157                 goto err3;
1158         }
1159         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1160             0) {
1161                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1162                            "netlink cache (event)");
1163                 goto err3b;
1164         }
1165 #else /* CONFIG_LIBNL20 */
1166         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1167         if (drv->nl_cache == NULL) {
1168                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1169                            "netlink cache");
1170                 goto err3;
1171         }
1172         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1173         if (drv->nl_cache_event == NULL) {
1174                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1175                            "netlink cache (event)");
1176                 goto err3b;
1177         }
1178 #endif /* CONFIG_LIBNL20 */
1179
1180         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1181         if (drv->nl80211 == NULL) {
1182                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1183                            "found");
1184                 goto err4;
1185         }
1186
1187         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1188         if (ret >= 0)
1189                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1190         if (ret < 0) {
1191                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1192                            "membership for scan events: %d (%s)",
1193                            ret, strerror(-ret));
1194                 goto err4;
1195         }
1196
1197         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1198         if (ret >= 0)
1199                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1200         if (ret < 0) {
1201                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1202                            "membership for mlme events: %d (%s)",
1203                            ret, strerror(-ret));
1204                 goto err4;
1205         }
1206
1207         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1208                                  wpa_driver_nl80211_event_receive, drv, ctx);
1209
1210         return 0;
1211
1212 err4:
1213         nl_cache_free(drv->nl_cache_event);
1214 err3b:
1215         nl_cache_free(drv->nl_cache);
1216 err3:
1217         nl_handle_destroy(drv->nl_handle_event);
1218 err2b:
1219         nl_handle_destroy(drv->nl_handle);
1220 err2:
1221         nl_cb_put(drv->nl_cb);
1222 err1:
1223         return -1;
1224 }
1225
1226
1227 static int wpa_driver_nl80211_init_link_events(
1228         struct wpa_driver_nl80211_data *drv)
1229 {
1230 #ifdef HOSTAPD
1231         return 0;
1232 #else /* HOSTAPD */
1233         int s;
1234         struct sockaddr_nl local;
1235
1236         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1237         if (s < 0) {
1238                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1239                 return -1;
1240         }
1241
1242         os_memset(&local, 0, sizeof(local));
1243         local.nl_family = AF_NETLINK;
1244         local.nl_groups = RTMGRP_LINK;
1245         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1246                 perror("bind(netlink)");
1247                 close(s);
1248                 return -1;
1249         }
1250
1251         eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
1252                                  drv->ctx);
1253         drv->link_event_sock = s;
1254
1255         return 0;
1256 #endif /* HOSTAPD */
1257 }
1258
1259
1260 /**
1261  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1262  * @ctx: context to be used when calling wpa_supplicant functions,
1263  * e.g., wpa_supplicant_event()
1264  * @ifname: interface name, e.g., wlan0
1265  * Returns: Pointer to private data, %NULL on failure
1266  */
1267 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1268 {
1269         struct wpa_driver_nl80211_data *drv;
1270
1271         drv = os_zalloc(sizeof(*drv));
1272         if (drv == NULL)
1273                 return NULL;
1274         drv->ctx = ctx;
1275         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1276         drv->monitor_ifidx = -1;
1277         drv->monitor_sock = -1;
1278         drv->link_event_sock = -1;
1279         drv->ioctl_sock = -1;
1280
1281         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1282                 os_free(drv);
1283                 return NULL;
1284         }
1285
1286         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1287         if (drv->ioctl_sock < 0) {
1288                 perror("socket(PF_INET,SOCK_DGRAM)");
1289                 goto failed;
1290         }
1291
1292         if (wpa_driver_nl80211_init_link_events(drv) ||
1293             wpa_driver_nl80211_finish_drv_init(drv))
1294                 goto failed;
1295
1296         return drv;
1297
1298 failed:
1299         if (drv->link_event_sock >= 0) {
1300                 eloop_unregister_read_sock(drv->link_event_sock);
1301                 close(drv->link_event_sock);
1302         }
1303         if (drv->ioctl_sock >= 0)
1304                 close(drv->ioctl_sock);
1305
1306         genl_family_put(drv->nl80211);
1307         nl_cache_free(drv->nl_cache);
1308         nl_handle_destroy(drv->nl_handle);
1309         nl_cb_put(drv->nl_cb);
1310
1311         os_free(drv);
1312         return NULL;
1313 }
1314
1315
1316 static int
1317 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1318 {
1319         drv->ifindex = if_nametoindex(drv->ifname);
1320
1321 #ifndef HOSTAPD
1322         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1323                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1324                            "use managed mode");
1325         }
1326
1327         if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1328                 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1329                            "UP", drv->ifname);
1330                 return -1;
1331         }
1332
1333         if (wpa_driver_nl80211_capa(drv))
1334                 return -1;
1335
1336         wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
1337 #endif /* HOSTAPD */
1338
1339         return 0;
1340 }
1341
1342
1343 #ifdef HOSTAPD
1344 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1345 {
1346         struct i802_bss *bss, *prev;
1347         bss = drv->bss.next;
1348         while (bss) {
1349                 prev = bss;
1350                 bss = bss->next;
1351                 os_free(bss);
1352         }
1353 }
1354 #endif /* HOSTAPD */
1355
1356
1357 #if defined(CONFIG_AP) || defined(HOSTAPD)
1358 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1359 {
1360         struct nl_msg *msg;
1361
1362         msg = nlmsg_alloc();
1363         if (!msg)
1364                 return -ENOMEM;
1365
1366         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1367                     0, NL80211_CMD_DEL_BEACON, 0);
1368         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1369
1370         return send_and_recv_msgs(drv, msg, NULL, NULL);
1371  nla_put_failure:
1372         return -ENOBUFS;
1373 }
1374 #endif /* CONFIG_AP || HOSTAPD */
1375
1376
1377 /**
1378  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1379  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1380  *
1381  * Shut down driver interface and processing of driver events. Free
1382  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1383  */
1384 static void wpa_driver_nl80211_deinit(void *priv)
1385 {
1386         struct wpa_driver_nl80211_data *drv = priv;
1387
1388 #if defined(CONFIG_AP) || defined(HOSTAPD)
1389         nl80211_remove_monitor_interface(drv);
1390         if (drv->monitor_sock >= 0) {
1391                 eloop_unregister_read_sock(drv->monitor_sock);
1392                 close(drv->monitor_sock);
1393         }
1394
1395         if (drv->nlmode == NL80211_IFTYPE_AP)
1396                 wpa_driver_nl80211_del_beacon(drv);
1397 #endif /* CONFIG_AP || HOSTAPD */
1398
1399 #ifdef HOSTAPD
1400         if (drv->last_freq_ht) {
1401                 /* Clear HT flags from the driver */
1402                 struct hostapd_freq_params freq;
1403                 os_memset(&freq, 0, sizeof(freq));
1404                 freq.freq = drv->last_freq;
1405                 i802_set_freq(priv, &freq);
1406         }
1407
1408         if (drv->eapol_sock >= 0) {
1409                 eloop_unregister_read_sock(drv->eapol_sock);
1410                 close(drv->eapol_sock);
1411         }
1412
1413         if (drv->if_indices != drv->default_if_indices)
1414                 os_free(drv->if_indices);
1415
1416         wpa_driver_nl80211_free_bss(drv);
1417 #else /* HOSTAPD */
1418 #ifndef NO_WEXT
1419         wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, 0);
1420 #endif /* NO_WEXT */
1421
1422         wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1423
1424         if (drv->link_event_sock >= 0) {
1425                 eloop_unregister_read_sock(drv->link_event_sock);
1426                 close(drv->link_event_sock);
1427         }
1428 #endif /* HOSTAPD */
1429
1430         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1431
1432         (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1433         wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1434
1435         if (drv->ioctl_sock >= 0)
1436                 close(drv->ioctl_sock);
1437
1438         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1439         genl_family_put(drv->nl80211);
1440         nl_cache_free(drv->nl_cache);
1441         nl_cache_free(drv->nl_cache_event);
1442         nl_handle_destroy(drv->nl_handle);
1443         nl_handle_destroy(drv->nl_handle_event);
1444         nl_cb_put(drv->nl_cb);
1445
1446         os_free(drv);
1447 }
1448
1449
1450 /**
1451  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1452  * @eloop_ctx: Driver private data
1453  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1454  *
1455  * This function can be used as registered timeout when starting a scan to
1456  * generate a scan completed event if the driver does not report this.
1457  */
1458 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1459 {
1460         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1461         if (drv->ap_scan_as_station) {
1462                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1463                 drv->ap_scan_as_station = 0;
1464         }
1465         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1466         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1467 }
1468
1469
1470 /**
1471  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1472  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1473  * @params: Scan parameters
1474  * Returns: 0 on success, -1 on failure
1475  */
1476 static int wpa_driver_nl80211_scan(void *priv,
1477                                    struct wpa_driver_scan_params *params)
1478 {
1479         struct wpa_driver_nl80211_data *drv = priv;
1480         int ret = 0, timeout;
1481         struct nl_msg *msg, *ssids, *freqs;
1482         size_t i;
1483
1484         msg = nlmsg_alloc();
1485         ssids = nlmsg_alloc();
1486         freqs = nlmsg_alloc();
1487         if (!msg || !ssids || !freqs) {
1488                 nlmsg_free(msg);
1489                 nlmsg_free(ssids);
1490                 nlmsg_free(freqs);
1491                 return -1;
1492         }
1493
1494         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1495                     NL80211_CMD_TRIGGER_SCAN, 0);
1496
1497         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1498
1499         for (i = 0; i < params->num_ssids; i++) {
1500                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1501                         params->ssids[i].ssid);
1502         }
1503         if (params->num_ssids)
1504                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1505
1506         if (params->extra_ies) {
1507                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1508                         params->extra_ies);
1509         }
1510
1511         if (params->freqs) {
1512                 for (i = 0; params->freqs[i]; i++)
1513                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1514                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1515         }
1516
1517         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1518         msg = NULL;
1519         if (ret) {
1520                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1521                            "(%s)", ret, strerror(-ret));
1522 #ifdef HOSTAPD
1523                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1524                         /*
1525                          * mac80211 does not allow scan requests in AP mode, so
1526                          * try to do this in station mode.
1527                          */
1528                         if (wpa_driver_nl80211_set_mode(drv,
1529                                                         IEEE80211_MODE_INFRA))
1530                                 goto nla_put_failure;
1531
1532                         if (wpa_driver_nl80211_scan(drv, params)) {
1533                                 wpa_driver_nl80211_set_mode(drv,
1534                                                             IEEE80211_MODE_AP);
1535                                 goto nla_put_failure;
1536                         }
1537
1538                         /* Restore AP mode when processing scan results */
1539                         drv->ap_scan_as_station = 1;
1540                         ret = 0;
1541                 } else
1542                         goto nla_put_failure;
1543 #else /* HOSTAPD */
1544                 goto nla_put_failure;
1545 #endif /* HOSTAPD */
1546         }
1547
1548         /* Not all drivers generate "scan completed" wireless event, so try to
1549          * read results after a timeout. */
1550         timeout = 10;
1551         if (drv->scan_complete_events) {
1552                 /*
1553                  * The driver seems to deliver events to notify when scan is
1554                  * complete, so use longer timeout to avoid race conditions
1555                  * with scanning and following association request.
1556                  */
1557                 timeout = 30;
1558         }
1559         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1560                    "seconds", ret, timeout);
1561         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1562         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1563                                drv, drv->ctx);
1564
1565 nla_put_failure:
1566         nlmsg_free(ssids);
1567         nlmsg_free(msg);
1568         nlmsg_free(freqs);
1569         return ret;
1570 }
1571
1572
1573 static int bss_info_handler(struct nl_msg *msg, void *arg)
1574 {
1575         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1576         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1577         struct nlattr *bss[NL80211_BSS_MAX + 1];
1578         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1579                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1580                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1581                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1582                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1583                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1584                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1585                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1586                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1587         };
1588         struct wpa_scan_results *res = arg;
1589         struct wpa_scan_res **tmp;
1590         struct wpa_scan_res *r;
1591         const u8 *ie;
1592         size_t ie_len;
1593
1594         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1595                   genlmsg_attrlen(gnlh, 0), NULL);
1596         if (!tb[NL80211_ATTR_BSS])
1597                 return NL_SKIP;
1598         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1599                              bss_policy))
1600                 return NL_SKIP;
1601         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1602                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1603                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1604         } else {
1605                 ie = NULL;
1606                 ie_len = 0;
1607         }
1608
1609         r = os_zalloc(sizeof(*r) + ie_len);
1610         if (r == NULL)
1611                 return NL_SKIP;
1612         if (bss[NL80211_BSS_BSSID])
1613                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1614                           ETH_ALEN);
1615         if (bss[NL80211_BSS_FREQUENCY])
1616                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1617         if (bss[NL80211_BSS_BEACON_INTERVAL])
1618                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1619         if (bss[NL80211_BSS_CAPABILITY])
1620                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1621         r->flags |= WPA_SCAN_NOISE_INVALID;
1622         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1623                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1624                 r->level /= 100; /* mBm to dBm */
1625                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1626         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1627                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1628                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1629         } else
1630                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1631         if (bss[NL80211_BSS_TSF])
1632                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1633         r->ie_len = ie_len;
1634         if (ie)
1635                 os_memcpy(r + 1, ie, ie_len);
1636
1637         tmp = os_realloc(res->res,
1638                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1639         if (tmp == NULL) {
1640                 os_free(r);
1641                 return NL_SKIP;
1642         }
1643         tmp[res->num++] = r;
1644         res->res = tmp;
1645
1646         return NL_SKIP;
1647 }
1648
1649
1650 /**
1651  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1652  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1653  * Returns: Scan results on success, -1 on failure
1654  */
1655 static struct wpa_scan_results *
1656 wpa_driver_nl80211_get_scan_results(void *priv)
1657 {
1658         struct wpa_driver_nl80211_data *drv = priv;
1659         struct nl_msg *msg;
1660         struct wpa_scan_results *res;
1661         int ret;
1662
1663         res = os_zalloc(sizeof(*res));
1664         if (res == NULL)
1665                 return 0;
1666         msg = nlmsg_alloc();
1667         if (!msg)
1668                 goto nla_put_failure;
1669
1670         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1671                     NL80211_CMD_GET_SCAN, 0);
1672         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1673
1674         ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1675         msg = NULL;
1676         if (ret == 0) {
1677                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1678                            (unsigned long) res->num);
1679                 return res;
1680         }
1681         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1682                    "(%s)", ret, strerror(-ret));
1683 nla_put_failure:
1684         nlmsg_free(msg);
1685         wpa_scan_results_free(res);
1686         return NULL;
1687 }
1688
1689
1690 static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
1691                        wpa_alg alg, const u8 *addr, int key_idx, int set_tx,
1692                        const u8 *seq, size_t seq_len,
1693                        const u8 *key, size_t key_len)
1694 {
1695         struct nl_msg *msg;
1696         int ret;
1697
1698         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1699                    "set_tx=%d seq_len=%lu key_len=%lu",
1700                    __func__, ifindex, alg, addr, key_idx, set_tx,
1701                    (unsigned long) seq_len, (unsigned long) key_len);
1702
1703         msg = nlmsg_alloc();
1704         if (!msg)
1705                 return -ENOMEM;
1706
1707         if (alg == WPA_ALG_NONE) {
1708                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1709                             0, NL80211_CMD_DEL_KEY, 0);
1710         } else {
1711                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1712                             0, NL80211_CMD_NEW_KEY, 0);
1713                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1714                 switch (alg) {
1715                 case WPA_ALG_WEP:
1716                         if (key_len == 5)
1717                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1718                                             WLAN_CIPHER_SUITE_WEP40);
1719                         else
1720                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1721                                             WLAN_CIPHER_SUITE_WEP104);
1722                         break;
1723                 case WPA_ALG_TKIP:
1724                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1725                                     WLAN_CIPHER_SUITE_TKIP);
1726                         break;
1727                 case WPA_ALG_CCMP:
1728                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1729                                     WLAN_CIPHER_SUITE_CCMP);
1730                         break;
1731                 case WPA_ALG_IGTK:
1732                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1733                                     WLAN_CIPHER_SUITE_AES_CMAC);
1734                         break;
1735                 default:
1736                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1737                                    "algorithm %d", __func__, alg);
1738                         nlmsg_free(msg);
1739                         return -1;
1740                 }
1741         }
1742
1743         if (seq && seq_len)
1744                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1745
1746         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1747         {
1748                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
1749                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1750         }
1751         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1752         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1753
1754         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1755         if (ret == -ENOENT && alg == WPA_ALG_NONE)
1756                 ret = 0;
1757         if (ret)
1758                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1759                            ret, strerror(-ret));
1760
1761         /*
1762          * If we failed or don't need to set the default TX key (below),
1763          * we're done here.
1764          */
1765         if (ret || !set_tx || alg == WPA_ALG_NONE)
1766                 return ret;
1767 #ifdef HOSTAPD /* FIX: is this needed? */
1768         if (addr)
1769                 return ret;
1770 #endif /* HOSTAPD */
1771
1772         msg = nlmsg_alloc();
1773         if (!msg)
1774                 return -ENOMEM;
1775
1776         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1777                     0, NL80211_CMD_SET_KEY, 0);
1778         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1779         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1780         if (alg == WPA_ALG_IGTK)
1781                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1782         else
1783                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1784
1785         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1786         if (ret == -ENOENT)
1787                 ret = 0;
1788         if (ret)
1789                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1790                            "err=%d %s)", ret, strerror(-ret));
1791         return ret;
1792
1793 nla_put_failure:
1794         return -ENOBUFS;
1795 }
1796
1797
1798 #ifndef HOSTAPD
1799
1800 static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
1801                                       const u8 *addr, int key_idx,
1802                                       int set_tx, const u8 *seq,
1803                                       size_t seq_len,
1804                                       const u8 *key, size_t key_len)
1805 {
1806         struct wpa_driver_nl80211_data *drv = priv;
1807         return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
1808                            seq_len, key, key_len);
1809 }
1810
1811
1812 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1813                                    const u8 *addr, int cmd, u16 reason_code)
1814 {
1815         int ret = -1;
1816         struct nl_msg *msg;
1817
1818         msg = nlmsg_alloc();
1819         if (!msg)
1820                 return -1;
1821
1822         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1823
1824         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1825         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1826         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1827
1828         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1829         msg = NULL;
1830         if (ret) {
1831                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1832                            "(%s)", ret, strerror(-ret));
1833                 goto nla_put_failure;
1834         }
1835         ret = 0;
1836
1837 nla_put_failure:
1838         nlmsg_free(msg);
1839         return ret;
1840 }
1841
1842
1843 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1844                                              int reason_code)
1845 {
1846         struct wpa_driver_nl80211_data *drv = priv;
1847         wpa_printf(MSG_DEBUG, "%s", __func__);
1848         drv->associated = 0;
1849         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1850                                        reason_code);
1851 }
1852
1853
1854 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
1855                                            int reason_code)
1856 {
1857         struct wpa_driver_nl80211_data *drv = priv;
1858         wpa_printf(MSG_DEBUG, "%s", __func__);
1859         drv->associated = 0;
1860         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1861                                        reason_code);
1862 }
1863
1864
1865 static int wpa_driver_nl80211_authenticate(
1866         void *priv, struct wpa_driver_auth_params *params)
1867 {
1868         struct wpa_driver_nl80211_data *drv = priv;
1869         int ret = -1, i;
1870         struct nl_msg *msg;
1871         enum nl80211_auth_type type;
1872
1873         drv->associated = 0;
1874
1875         msg = nlmsg_alloc();
1876         if (!msg)
1877                 return -1;
1878
1879         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1880                    drv->ifindex);
1881
1882         for (i = 0; i < 4; i++) {
1883                 if (!params->wep_key[i])
1884                         continue;
1885                 wpa_driver_nl80211_set_key(drv, WPA_ALG_WEP, NULL, i,
1886                                            i == params->wep_tx_keyidx, NULL, 0,
1887                                            params->wep_key[i],
1888                                            params->wep_key_len[i]);
1889         }
1890
1891         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1892                     NL80211_CMD_AUTHENTICATE, 0);
1893
1894         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1895         if (params->bssid) {
1896                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
1897                            MAC2STR(params->bssid));
1898                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1899         }
1900         if (params->freq) {
1901                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
1902                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1903         }
1904         if (params->ssid) {
1905                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
1906                                   params->ssid, params->ssid_len);
1907                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1908                         params->ssid);
1909         }
1910         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
1911         if (params->ie)
1912                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1913         /*
1914          * TODO: if multiple auth_alg options enabled, try them one by one if
1915          * the AP rejects authentication due to unknown auth alg
1916          */
1917         if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
1918                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1919         else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
1920                 type = NL80211_AUTHTYPE_SHARED_KEY;
1921         else if (params->auth_alg & AUTH_ALG_LEAP)
1922                 type = NL80211_AUTHTYPE_NETWORK_EAP;
1923         else if (params->auth_alg & AUTH_ALG_FT)
1924                 type = NL80211_AUTHTYPE_FT;
1925         else
1926                 goto nla_put_failure;
1927         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
1928         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
1929
1930         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1931         msg = NULL;
1932         if (ret) {
1933                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1934                            "(%s)", ret, strerror(-ret));
1935                 goto nla_put_failure;
1936         }
1937         ret = 0;
1938         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
1939                    "successfully");
1940
1941 nla_put_failure:
1942         nlmsg_free(msg);
1943         return ret;
1944 }
1945
1946 #endif /* HOSTAPD */
1947
1948
1949 #if defined(CONFIG_AP) || defined(HOSTAPD)
1950
1951 struct phy_info_arg {
1952         u16 *num_modes;
1953         struct hostapd_hw_modes *modes;
1954 };
1955
1956 static int phy_info_handler(struct nl_msg *msg, void *arg)
1957 {
1958         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1959         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1960         struct phy_info_arg *phy_info = arg;
1961
1962         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1963
1964         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1965         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1966                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1967                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1968                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1969                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1970                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1971                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1972         };
1973
1974         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1975         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1976                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1977                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1978         };
1979
1980         struct nlattr *nl_band;
1981         struct nlattr *nl_freq;
1982         struct nlattr *nl_rate;
1983         int rem_band, rem_freq, rem_rate;
1984         struct hostapd_hw_modes *mode;
1985         int idx, mode_is_set;
1986
1987         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1988                   genlmsg_attrlen(gnlh, 0), NULL);
1989
1990         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1991                 return NL_SKIP;
1992
1993         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1994                 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1995                 if (!mode)
1996                         return NL_SKIP;
1997                 phy_info->modes = mode;
1998
1999                 mode_is_set = 0;
2000
2001                 mode = &phy_info->modes[*(phy_info->num_modes)];
2002                 memset(mode, 0, sizeof(*mode));
2003                 *(phy_info->num_modes) += 1;
2004
2005                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2006                           nla_len(nl_band), NULL);
2007
2008                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2009                         mode->ht_capab = nla_get_u16(
2010                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2011                 }
2012
2013                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2014                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2015                                   nla_len(nl_freq), freq_policy);
2016                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2017                                 continue;
2018                         mode->num_channels++;
2019                 }
2020
2021                 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
2022                 if (!mode->channels)
2023                         return NL_SKIP;
2024
2025                 idx = 0;
2026
2027                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2028                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2029                                   nla_len(nl_freq), freq_policy);
2030                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2031                                 continue;
2032
2033                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2034                         mode->channels[idx].flag = 0;
2035
2036                         if (!mode_is_set) {
2037                                 /* crude heuristic */
2038                                 if (mode->channels[idx].freq < 4000)
2039                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2040                                 else
2041                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2042                                 mode_is_set = 1;
2043                         }
2044
2045                         /* crude heuristic */
2046                         if (mode->channels[idx].freq < 4000)
2047                                 if (mode->channels[idx].freq == 2484)
2048                                         mode->channels[idx].chan = 14;
2049                                 else
2050                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2051                         else
2052                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2053
2054                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2055                                 mode->channels[idx].flag |=
2056                                         HOSTAPD_CHAN_DISABLED;
2057                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2058                                 mode->channels[idx].flag |=
2059                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2060                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2061                                 mode->channels[idx].flag |=
2062                                         HOSTAPD_CHAN_NO_IBSS;
2063                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2064                                 mode->channels[idx].flag |=
2065                                         HOSTAPD_CHAN_RADAR;
2066
2067                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2068                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2069                                 mode->channels[idx].max_tx_power =
2070                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2071
2072                         idx++;
2073                 }
2074
2075                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2076                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2077                                   nla_len(nl_rate), rate_policy);
2078                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2079                                 continue;
2080                         mode->num_rates++;
2081                 }
2082
2083                 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
2084                 if (!mode->rates)
2085                         return NL_SKIP;
2086
2087                 idx = 0;
2088
2089                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2090                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2091                                   nla_len(nl_rate), rate_policy);
2092                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2093                                 continue;
2094                         mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2095
2096                         /* crude heuristic */
2097                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2098                             mode->rates[idx].rate > 200)
2099                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2100
2101                         if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
2102                                 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2103
2104                         idx++;
2105                 }
2106         }
2107
2108         return NL_SKIP;
2109 }
2110
2111 static struct hostapd_hw_modes *
2112 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2113 {
2114         u16 m;
2115         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2116         int i, mode11g_idx = -1;
2117
2118         /* If only 802.11g mode is included, use it to construct matching
2119          * 802.11b mode data. */
2120
2121         for (m = 0; m < *num_modes; m++) {
2122                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2123                         return modes; /* 802.11b already included */
2124                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2125                         mode11g_idx = m;
2126         }
2127
2128         if (mode11g_idx < 0)
2129                 return modes; /* 2.4 GHz band not supported at all */
2130
2131         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2132         if (nmodes == NULL)
2133                 return modes; /* Could not add 802.11b mode */
2134
2135         mode = &nmodes[*num_modes];
2136         os_memset(mode, 0, sizeof(*mode));
2137         (*num_modes)++;
2138         modes = nmodes;
2139
2140         mode->mode = HOSTAPD_MODE_IEEE80211B;
2141
2142         mode11g = &modes[mode11g_idx];
2143         mode->num_channels = mode11g->num_channels;
2144         mode->channels = os_malloc(mode11g->num_channels *
2145                                    sizeof(struct hostapd_channel_data));
2146         if (mode->channels == NULL) {
2147                 (*num_modes)--;
2148                 return modes; /* Could not add 802.11b mode */
2149         }
2150         os_memcpy(mode->channels, mode11g->channels,
2151                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2152
2153         mode->num_rates = 0;
2154         mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2155         if (mode->rates == NULL) {
2156                 os_free(mode->channels);
2157                 (*num_modes)--;
2158                 return modes; /* Could not add 802.11b mode */
2159         }
2160
2161         for (i = 0; i < mode11g->num_rates; i++) {
2162                 if (mode11g->rates[i].rate > 110 ||
2163                     mode11g->rates[i].flags &
2164                     (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2165                         continue;
2166                 mode->rates[mode->num_rates] = mode11g->rates[i];
2167                 mode->num_rates++;
2168                 if (mode->num_rates == 4)
2169                         break;
2170         }
2171
2172         if (mode->num_rates == 0) {
2173                 os_free(mode->channels);
2174                 os_free(mode->rates);
2175                 (*num_modes)--;
2176                 return modes; /* No 802.11b rates */
2177         }
2178
2179         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2180                    "information");
2181
2182         return modes;
2183 }
2184
2185
2186 static struct hostapd_hw_modes *
2187 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2188 {
2189         struct wpa_driver_nl80211_data *drv = priv;
2190         struct nl_msg *msg;
2191         struct phy_info_arg result = {
2192                 .num_modes = num_modes,
2193                 .modes = NULL,
2194         };
2195
2196         *num_modes = 0;
2197         *flags = 0;
2198
2199         msg = nlmsg_alloc();
2200         if (!msg)
2201                 return NULL;
2202
2203         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2204                     0, NL80211_CMD_GET_WIPHY, 0);
2205
2206         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2207
2208         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2209                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2210  nla_put_failure:
2211         return NULL;
2212 }
2213
2214
2215 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2216                                          const void *data, size_t len,
2217                                          int encrypt)
2218 {
2219         __u8 rtap_hdr[] = {
2220                 0x00, 0x00, /* radiotap version */
2221                 0x0e, 0x00, /* radiotap length */
2222                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2223                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2224                 0x00,       /* padding */
2225                 0x00, 0x00, /* RX and TX flags to indicate that */
2226                 0x00, 0x00, /* this is the injected frame directly */
2227         };
2228         struct iovec iov[2] = {
2229                 {
2230                         .iov_base = &rtap_hdr,
2231                         .iov_len = sizeof(rtap_hdr),
2232                 },
2233                 {
2234                         .iov_base = (void *) data,
2235                         .iov_len = len,
2236                 }
2237         };
2238         struct msghdr msg = {
2239                 .msg_name = NULL,
2240                 .msg_namelen = 0,
2241                 .msg_iov = iov,
2242                 .msg_iovlen = 2,
2243                 .msg_control = NULL,
2244                 .msg_controllen = 0,
2245                 .msg_flags = 0,
2246         };
2247
2248         if (encrypt)
2249                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2250
2251         return sendmsg(drv->monitor_sock, &msg, 0);
2252 }
2253
2254
2255 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2256                                         size_t data_len)
2257 {
2258         struct wpa_driver_nl80211_data *drv = priv;
2259         struct ieee80211_mgmt *mgmt;
2260         int encrypt = 1;
2261         u16 fc;
2262
2263         mgmt = (struct ieee80211_mgmt *) data;
2264         fc = le_to_host16(mgmt->frame_control);
2265
2266         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2267             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2268                 /*
2269                  * Only one of the authentication frame types is encrypted.
2270                  * In order for static WEP encryption to work properly (i.e.,
2271                  * to not encrypt the frame), we need to tell mac80211 about
2272                  * the frames that must not be encrypted.
2273                  */
2274                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2275                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2276                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2277                         encrypt = 0;
2278         }
2279
2280         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2281 }
2282
2283
2284 static int wpa_driver_nl80211_set_beacon_iface(int ifindex, void *priv,
2285                                                const u8 *head, size_t head_len,
2286                                                const u8 *tail, size_t tail_len,
2287                                                int dtim_period)
2288 {
2289         struct wpa_driver_nl80211_data *drv = priv;
2290         struct nl_msg *msg;
2291         u8 cmd = NL80211_CMD_NEW_BEACON;
2292         int ret;
2293         int beacon_set;
2294 #ifdef HOSTAPD
2295         struct i802_bss *bss;
2296
2297         bss = get_bss(drv, ifindex);
2298         if (bss == NULL)
2299                 return -ENOENT;
2300         beacon_set = bss->beacon_set;
2301 #else /* HOSTAPD */
2302         beacon_set = drv->beacon_set;
2303 #endif /* HOSTAPD */
2304
2305         msg = nlmsg_alloc();
2306         if (!msg)
2307                 return -ENOMEM;
2308
2309         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2310                    beacon_set);
2311         if (beacon_set)
2312                 cmd = NL80211_CMD_SET_BEACON;
2313
2314         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2315                     0, cmd, 0);
2316         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2317         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2318         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2319         if (!drv->beacon_int)
2320                 drv->beacon_int = 100;
2321         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
2322         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2323
2324         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2325         if (ret) {
2326                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2327                            ret, strerror(-ret));
2328         } else {
2329 #ifdef HOSTAPD
2330                 bss->beacon_set = 1;
2331 #else /* HOSTAPD */
2332                 drv->beacon_set = 1;
2333 #endif /* HOSTAPD */
2334         }
2335         return ret;
2336  nla_put_failure:
2337         return -ENOBUFS;
2338 }
2339
2340
2341 static int wpa_driver_nl80211_set_beacon_int(void *priv, int value)
2342 {
2343         struct wpa_driver_nl80211_data *drv = priv;
2344         struct nl_msg *msg;
2345
2346         drv->beacon_int = value;
2347
2348 #ifdef HOSTAPD
2349         if (!drv->bss.beacon_set)
2350                 return 0;
2351 #else /* HOSTAPD */
2352         if (!drv->beacon_set)
2353                 return 0;
2354 #endif /* HOSTAPD */
2355
2356         msg = nlmsg_alloc();
2357         if (!msg)
2358                 return -ENOMEM;
2359
2360         wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d", value);
2361         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2362                     0, NL80211_CMD_SET_BEACON, 0);
2363         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2364
2365         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
2366
2367         return send_and_recv_msgs(drv, msg, NULL, NULL);
2368  nla_put_failure:
2369         return -ENOBUFS;
2370 }
2371
2372
2373 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2374                                        int freq, int ht_enabled,
2375                                        int sec_channel_offset)
2376 {
2377         struct nl_msg *msg;
2378         int ret;
2379
2380         msg = nlmsg_alloc();
2381         if (!msg)
2382                 return -1;
2383
2384         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2385                     NL80211_CMD_SET_WIPHY, 0);
2386
2387         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2388         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2389         if (ht_enabled) {
2390                 switch (sec_channel_offset) {
2391                 case -1:
2392                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2393                                     NL80211_CHAN_HT40MINUS);
2394                         break;
2395                 case 1:
2396                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2397                                     NL80211_CHAN_HT40PLUS);
2398                         break;
2399                 default:
2400                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2401                                     NL80211_CHAN_HT20);
2402                         break;
2403                 }
2404         }
2405
2406         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2407         if (ret == 0)
2408                 return 0;
2409         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2410                    "%d (%s)", freq, ret, strerror(-ret));
2411 nla_put_failure:
2412         return -1;
2413 }
2414
2415
2416 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2417                                       struct hostapd_sta_add_params *params)
2418 {
2419         struct wpa_driver_nl80211_data *drv = priv;
2420         struct nl_msg *msg;
2421         int ret = -ENOBUFS;
2422
2423         msg = nlmsg_alloc();
2424         if (!msg)
2425                 return -ENOMEM;
2426
2427         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2428                     0, NL80211_CMD_NEW_STATION, 0);
2429
2430         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2431         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2432         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2433         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2434                 params->supp_rates);
2435         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2436                     params->listen_interval);
2437
2438 #ifdef CONFIG_IEEE80211N
2439         if (params->ht_capabilities) {
2440                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2441                         params->ht_capabilities->length,
2442                         &params->ht_capabilities->data);
2443         }
2444 #endif /* CONFIG_IEEE80211N */
2445
2446         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2447         if (ret)
2448                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2449                            "result: %d (%s)", ret, strerror(-ret));
2450         if (ret == -EEXIST)
2451                 ret = 0;
2452  nla_put_failure:
2453         return ret;
2454 }
2455
2456
2457 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2458 {
2459         struct wpa_driver_nl80211_data *drv = priv;
2460         struct nl_msg *msg;
2461         int ret;
2462
2463         msg = nlmsg_alloc();
2464         if (!msg)
2465                 return -ENOMEM;
2466
2467         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2468                     0, NL80211_CMD_DEL_STATION, 0);
2469
2470         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2471                     if_nametoindex(drv->ifname));
2472         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2473
2474         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2475         if (ret == -ENOENT)
2476                 return 0;
2477         return ret;
2478  nla_put_failure:
2479         return -ENOBUFS;
2480 }
2481
2482 #endif /* CONFIG_AP || HOSTAPD */
2483
2484
2485 #ifdef CONFIG_AP
2486
2487 static int wpa_driver_nl80211_set_beacon(void *priv,
2488                                          const u8 *head, size_t head_len,
2489                                          const u8 *tail, size_t tail_len,
2490                                          int dtim_period)
2491 {
2492         struct wpa_driver_nl80211_data *drv = priv;
2493         return wpa_driver_nl80211_set_beacon_iface(drv->ifindex, priv,
2494                                                    head, head_len,
2495                                                    tail, tail_len,
2496                                                    dtim_period);
2497 }
2498
2499 #endif /* CONFIG_AP */
2500
2501 #if defined(CONFIG_AP) || defined(HOSTAPD)
2502
2503 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2504                                  int ifidx)
2505 {
2506         struct nl_msg *msg;
2507
2508 #ifdef HOSTAPD
2509         /* stop listening for EAPOL on this interface */
2510         del_ifidx(drv, ifidx);
2511 #endif /* HOSTAPD */
2512
2513         msg = nlmsg_alloc();
2514         if (!msg)
2515                 goto nla_put_failure;
2516
2517         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2518                     0, NL80211_CMD_DEL_INTERFACE, 0);
2519         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2520
2521         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2522                 return;
2523  nla_put_failure:
2524         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2525                    ifidx);
2526 }
2527
2528
2529 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2530                                      const char *ifname,
2531                                      enum nl80211_iftype iftype,
2532                                      const u8 *addr)
2533 {
2534         struct nl_msg *msg, *flags = NULL;
2535         int ifidx;
2536         int ret = -ENOBUFS;
2537
2538         msg = nlmsg_alloc();
2539         if (!msg)
2540                 return -1;
2541
2542         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2543                     0, NL80211_CMD_NEW_INTERFACE, 0);
2544         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2545         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2546         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2547
2548         if (iftype == NL80211_IFTYPE_MONITOR) {
2549                 int err;
2550
2551                 flags = nlmsg_alloc();
2552                 if (!flags)
2553                         goto nla_put_failure;
2554
2555                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2556
2557                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2558
2559                 nlmsg_free(flags);
2560
2561                 if (err)
2562                         goto nla_put_failure;
2563         }
2564
2565         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2566         if (ret) {
2567  nla_put_failure:
2568                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2569                            ifname, ret, strerror(-ret));
2570                 return ret;
2571         }
2572
2573         ifidx = if_nametoindex(ifname);
2574
2575         if (ifidx <= 0)
2576                 return -1;
2577
2578 #ifdef HOSTAPD
2579         /* start listening for EAPOL on this interface */
2580         add_ifidx(drv, ifidx);
2581
2582         if (addr && iftype == NL80211_IFTYPE_AP &&
2583             set_ifhwaddr(drv, ifname, addr)) {
2584                 nl80211_remove_iface(drv, ifidx);
2585                 return -1;
2586         }
2587 #endif /* HOSTAPD */
2588
2589         return ifidx;
2590 }
2591 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2592                                 const char *ifname, enum nl80211_iftype iftype,
2593                                 const u8 *addr)
2594 {
2595         int ret;
2596
2597         ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2598
2599         /* if error occured and interface exists already */
2600         if (ret == -ENFILE && if_nametoindex(ifname)) {
2601                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2602
2603                 /* Try to remove the interface that was already there. */
2604                 nl80211_remove_iface(drv, if_nametoindex(ifname));
2605
2606                 /* Try to create the interface again */
2607                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2608         }
2609
2610         return ret;
2611 }
2612
2613 #endif /* CONFIG_AP || HOSTAPD */
2614
2615 #ifdef CONFIG_AP
2616
2617 void ap_tx_status(void *ctx, const u8 *addr,
2618                   const u8 *buf, size_t len, int ack);
2619 void ap_rx_from_unknown_sta(void *ctx, struct ieee80211_hdr *hdr, size_t len);
2620 void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2621                 struct hostapd_frame_info *fi);
2622 void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2623
2624 #endif /* CONFIG_AP */
2625
2626 #if defined(CONFIG_AP) || defined(HOSTAPD)
2627
2628 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2629 {
2630         struct ieee80211_hdr *hdr;
2631         u16 fc, type, stype;
2632
2633         hdr = (struct ieee80211_hdr *) buf;
2634         fc = le_to_host16(hdr->frame_control);
2635
2636         type = WLAN_FC_GET_TYPE(fc);
2637         stype = WLAN_FC_GET_STYPE(fc);
2638
2639         switch (type) {
2640         case WLAN_FC_TYPE_MGMT:
2641                 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2642                            ok ? "ACK" : "fail");
2643 #ifdef HOSTAPD
2644                 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2645 #else /* HOSTAPD */
2646                 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
2647 #endif /* HOSTAPD */
2648                 break;
2649         case WLAN_FC_TYPE_CTRL:
2650                 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2651                            ok ? "ACK" : "fail");
2652                 break;
2653         case WLAN_FC_TYPE_DATA:
2654 #ifdef HOSTAPD
2655                 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2656 #else /* HOSTAPD */
2657                 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
2658 #endif /* HOSTAPD */
2659                 break;
2660         default:
2661                 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2662                            type);
2663                 break;
2664         }
2665 }
2666
2667
2668 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2669                              struct ieee80211_hdr *hdr, size_t len)
2670 {
2671 #ifdef HOSTAPD
2672         hostapd_rx_from_unknown_sta(drv->ctx, hdr, len);
2673 #else /* HOSTAPD */
2674         ap_rx_from_unknown_sta(drv->ctx, hdr, len);
2675 #endif /* HOSTAPD */
2676 }
2677
2678
2679 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2680                          u8 *buf, size_t len,
2681                          struct hostapd_frame_info *hfi)
2682 {
2683         struct ieee80211_hdr *hdr;
2684         u16 fc, stype;
2685
2686         hdr = (struct ieee80211_hdr *) buf;
2687         fc = le_to_host16(hdr->frame_control);
2688         stype = WLAN_FC_GET_STYPE(fc);
2689
2690         switch (WLAN_FC_GET_TYPE(fc)) {
2691         case WLAN_FC_TYPE_MGMT:
2692                 if (stype != WLAN_FC_STYPE_BEACON &&
2693                     stype != WLAN_FC_STYPE_PROBE_REQ)
2694                         wpa_printf(MSG_MSGDUMP, "MGMT");
2695 #ifdef HOSTAPD
2696                 hostapd_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2697 #else /* HOSTAPD */
2698                 ap_mgmt_rx(drv->ctx, buf, len, stype, hfi);
2699 #endif /* HOSTAPD */
2700                 break;
2701         case WLAN_FC_TYPE_CTRL:
2702                 /* can only get here with PS-Poll frames */
2703                 wpa_printf(MSG_DEBUG, "CTRL");
2704                 from_unknown_sta(drv, hdr, len);
2705                 break;
2706         case WLAN_FC_TYPE_DATA:
2707                 from_unknown_sta(drv, hdr, len);
2708                 break;
2709         }
2710 }
2711
2712
2713 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2714 {
2715         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2716         int len;
2717         unsigned char buf[3000];
2718         struct ieee80211_radiotap_iterator iter;
2719         int ret;
2720         struct hostapd_frame_info hfi;
2721         int injected = 0, failed = 0, rxflags = 0;
2722
2723         len = recv(sock, buf, sizeof(buf), 0);
2724         if (len < 0) {
2725                 perror("recv");
2726                 return;
2727         }
2728
2729         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2730                 printf("received invalid radiotap frame\n");
2731                 return;
2732         }
2733
2734         memset(&hfi, 0, sizeof(hfi));
2735
2736         while (1) {
2737                 ret = ieee80211_radiotap_iterator_next(&iter);
2738                 if (ret == -ENOENT)
2739                         break;
2740                 if (ret) {
2741                         printf("received invalid radiotap frame (%d)\n", ret);
2742                         return;
2743                 }
2744                 switch (iter.this_arg_index) {
2745                 case IEEE80211_RADIOTAP_FLAGS:
2746                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2747                                 len -= 4;
2748                         break;
2749                 case IEEE80211_RADIOTAP_RX_FLAGS:
2750                         rxflags = 1;
2751                         break;
2752                 case IEEE80211_RADIOTAP_TX_FLAGS:
2753                         injected = 1;
2754                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2755                                         IEEE80211_RADIOTAP_F_TX_FAIL;
2756                         break;
2757                 case IEEE80211_RADIOTAP_DATA_RETRIES:
2758                         break;
2759                 case IEEE80211_RADIOTAP_CHANNEL:
2760                         /* TODO convert from freq/flags to channel number
2761                         hfi.channel = XXX;
2762                         hfi.phytype = XXX;
2763                          */
2764                         break;
2765                 case IEEE80211_RADIOTAP_RATE:
2766                         hfi.datarate = *iter.this_arg * 5;
2767                         break;
2768                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2769                         hfi.ssi_signal = *iter.this_arg;
2770                         break;
2771                 }
2772         }
2773
2774         if (rxflags && injected)
2775                 return;
2776
2777         if (!injected)
2778                 handle_frame(drv, buf + iter.max_length,
2779                              len - iter.max_length, &hfi);
2780         else
2781                 handle_tx_callback(drv->ctx, buf + iter.max_length,
2782                                    len - iter.max_length, !failed);
2783 }
2784
2785
2786 /*
2787  * we post-process the filter code later and rewrite
2788  * this to the offset to the last instruction
2789  */
2790 #define PASS    0xFF
2791 #define FAIL    0xFE
2792
2793 static struct sock_filter msock_filter_insns[] = {
2794         /*
2795          * do a little-endian load of the radiotap length field
2796          */
2797         /* load lower byte into A */
2798         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
2799         /* put it into X (== index register) */
2800         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2801         /* load upper byte into A */
2802         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
2803         /* left-shift it by 8 */
2804         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2805         /* or with X */
2806         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2807         /* put result into X */
2808         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2809
2810         /*
2811          * Allow management frames through, this also gives us those
2812          * management frames that we sent ourselves with status
2813          */
2814         /* load the lower byte of the IEEE 802.11 frame control field */
2815         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
2816         /* mask off frame type and version */
2817         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2818         /* accept frame if it's both 0, fall through otherwise */
2819         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2820
2821         /*
2822          * TODO: add a bit to radiotap RX flags that indicates
2823          * that the sending station is not associated, then
2824          * add a filter here that filters on our DA and that flag
2825          * to allow us to deauth frames to that bad station.
2826          *
2827          * Not a regression -- we didn't do it before either.
2828          */
2829
2830 #if 0
2831         /*
2832          * drop non-data frames, WDS frames
2833          */
2834         /* load the lower byte of the frame control field */
2835         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2836         /* mask off QoS bit */
2837         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
2838         /* drop non-data frames */
2839         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
2840         /* load the upper byte of the frame control field */
2841         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2842         /* mask off toDS/fromDS */
2843         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
2844         /* drop WDS frames */
2845         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, FAIL, 0),
2846 #endif
2847
2848         /*
2849          * add header length to index
2850          */
2851         /* load the lower byte of the frame control field */
2852         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2853         /* mask off QoS bit */
2854         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
2855         /* right shift it by 6 to give 0 or 2 */
2856         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
2857         /* add data frame header length */
2858         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
2859         /* add index, was start of 802.11 header */
2860         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
2861         /* move to index, now start of LL header */
2862         BPF_STMT(BPF_MISC | BPF_TAX, 0),
2863
2864         /*
2865          * Accept empty data frames, we use those for
2866          * polling activity.
2867          */
2868         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
2869         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2870
2871         /*
2872          * Accept EAPOL frames
2873          */
2874         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
2875         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2876         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
2877         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2878
2879         /* keep these last two statements or change the code below */
2880         /* return 0 == "DROP" */
2881         BPF_STMT(BPF_RET | BPF_K, 0),
2882         /* return ~0 == "keep all" */
2883         BPF_STMT(BPF_RET | BPF_K, ~0),
2884 };
2885
2886 static struct sock_fprog msock_filter = {
2887         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2888         .filter = msock_filter_insns,
2889 };
2890
2891
2892 static int add_monitor_filter(int s)
2893 {
2894         int idx;
2895
2896         /* rewrite all PASS/FAIL jump offsets */
2897         for (idx = 0; idx < msock_filter.len; idx++) {
2898                 struct sock_filter *insn = &msock_filter_insns[idx];
2899
2900                 if (BPF_CLASS(insn->code) == BPF_JMP) {
2901                         if (insn->code == (BPF_JMP|BPF_JA)) {
2902                                 if (insn->k == PASS)
2903                                         insn->k = msock_filter.len - idx - 2;
2904                                 else if (insn->k == FAIL)
2905                                         insn->k = msock_filter.len - idx - 3;
2906                         }
2907
2908                         if (insn->jt == PASS)
2909                                 insn->jt = msock_filter.len - idx - 2;
2910                         else if (insn->jt == FAIL)
2911                                 insn->jt = msock_filter.len - idx - 3;
2912
2913                         if (insn->jf == PASS)
2914                                 insn->jf = msock_filter.len - idx - 2;
2915                         else if (insn->jf == FAIL)
2916                                 insn->jf = msock_filter.len - idx - 3;
2917                 }
2918         }
2919
2920         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2921                        &msock_filter, sizeof(msock_filter))) {
2922                 perror("SO_ATTACH_FILTER");
2923                 return -1;
2924         }
2925
2926         return 0;
2927 }
2928
2929
2930 static void nl80211_remove_monitor_interface(
2931         struct wpa_driver_nl80211_data *drv)
2932 {
2933         if (drv->monitor_ifidx >= 0) {
2934                 nl80211_remove_iface(drv, drv->monitor_ifidx);
2935                 drv->monitor_ifidx = -1;
2936         }
2937 }
2938
2939
2940 static int
2941 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2942 {
2943         char buf[IFNAMSIZ];
2944         struct sockaddr_ll ll;
2945         int optval;
2946         socklen_t optlen;
2947
2948         snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2949         buf[IFNAMSIZ - 1] = '\0';
2950
2951         drv->monitor_ifidx =
2952                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2953
2954         if (drv->monitor_ifidx < 0)
2955                 return -1;
2956
2957         if (hostapd_set_iface_flags(drv, buf, 1))
2958                 goto error;
2959
2960         memset(&ll, 0, sizeof(ll));
2961         ll.sll_family = AF_PACKET;
2962         ll.sll_ifindex = drv->monitor_ifidx;
2963         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2964         if (drv->monitor_sock < 0) {
2965                 perror("socket[PF_PACKET,SOCK_RAW]");
2966                 goto error;
2967         }
2968
2969         if (add_monitor_filter(drv->monitor_sock)) {
2970                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2971                            "interface; do filtering in user space");
2972                 /* This works, but will cost in performance. */
2973         }
2974
2975         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
2976                 perror("monitor socket bind");
2977                 goto error;
2978         }
2979
2980         optlen = sizeof(optval);
2981         optval = 20;
2982         if (setsockopt
2983             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2984                 perror("Failed to set socket priority");
2985                 goto error;
2986         }
2987
2988         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2989                                      drv, NULL)) {
2990                 printf("Could not register monitor read socket\n");
2991                 goto error;
2992         }
2993
2994         return 0;
2995  error:
2996         nl80211_remove_monitor_interface(drv);
2997         return -1;
2998 }
2999
3000
3001 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3002
3003 static int wpa_driver_nl80211_hapd_send_eapol(
3004         void *priv, const u8 *addr, const u8 *data,
3005         size_t data_len, int encrypt, const u8 *own_addr)
3006 {
3007         struct wpa_driver_nl80211_data *drv = priv;
3008         struct ieee80211_hdr *hdr;
3009         size_t len;
3010         u8 *pos;
3011         int res;
3012 #if 0 /* FIX */
3013         int qos = sta->flags & WLAN_STA_WME;
3014 #else
3015         int qos = 0;
3016 #endif
3017
3018         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3019                 data_len;
3020         hdr = os_zalloc(len);
3021         if (hdr == NULL) {
3022                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3023                        (unsigned long) len);
3024                 return -1;
3025         }
3026
3027         hdr->frame_control =
3028                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3029         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3030         if (encrypt)
3031                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3032 #if 0 /* To be enabled if qos determination is added above */
3033         if (qos) {
3034                 hdr->frame_control |=
3035                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3036         }
3037 #endif
3038
3039         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3040         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3041         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3042         pos = (u8 *) (hdr + 1);
3043
3044 #if 0 /* To be enabled if qos determination is added above */
3045         if (qos) {
3046                 /* add an empty QoS header if needed */
3047                 pos[0] = 0;
3048                 pos[1] = 0;
3049                 pos += 2;
3050         }
3051 #endif
3052
3053         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3054         pos += sizeof(rfc1042_header);
3055         WPA_PUT_BE16(pos, ETH_P_PAE);
3056         pos += 2;
3057         memcpy(pos, data, data_len);
3058
3059         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3060         if (res < 0) {
3061                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3062                            "failed: %d (%s)",
3063                            (unsigned long) len, errno, strerror(errno));
3064         }
3065         free(hdr);
3066
3067         return res;
3068 }
3069
3070
3071 static u32 sta_flags_nl80211(int flags)
3072 {
3073         u32 f = 0;
3074
3075         if (flags & WLAN_STA_AUTHORIZED)
3076                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3077         if (flags & WLAN_STA_WMM)
3078                 f |= BIT(NL80211_STA_FLAG_WME);
3079         if (flags & WLAN_STA_SHORT_PREAMBLE)
3080                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3081         if (flags & WLAN_STA_MFP)
3082                 f |= BIT(NL80211_STA_FLAG_MFP);
3083
3084         return f;
3085 }
3086
3087
3088 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3089                                             int total_flags, int flags_or,
3090                                             int flags_and)
3091 {
3092         struct wpa_driver_nl80211_data *drv = priv;
3093         struct nl_msg *msg, *flags = NULL;
3094         struct nl80211_sta_flag_update upd;
3095
3096         msg = nlmsg_alloc();
3097         if (!msg)
3098                 return -ENOMEM;
3099
3100         flags = nlmsg_alloc();
3101         if (!flags) {
3102                 nlmsg_free(msg);
3103                 return -ENOMEM;
3104         }
3105
3106         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3107                     0, NL80211_CMD_SET_STATION, 0);
3108
3109         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3110                     if_nametoindex(drv->ifname));
3111         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3112
3113         /*
3114          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3115          * can be removed eventually.
3116          */
3117         if (total_flags & WLAN_STA_AUTHORIZED)
3118                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3119
3120         if (total_flags & WLAN_STA_WMM)
3121                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3122
3123         if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3124                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3125
3126         if (total_flags & WLAN_STA_MFP)
3127                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3128
3129         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3130                 goto nla_put_failure;
3131
3132         os_memset(&upd, 0, sizeof(upd));
3133         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3134         upd.set = sta_flags_nl80211(flags_or);
3135         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3136
3137         nlmsg_free(flags);
3138
3139         return send_and_recv_msgs(drv, msg, NULL, NULL);
3140  nla_put_failure:
3141         nlmsg_free(flags);
3142         return -ENOBUFS;
3143 }
3144
3145 #endif /* CONFIG_AP || HOSTAPD */
3146
3147 #ifdef CONFIG_AP
3148
3149 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3150                                  struct wpa_driver_associate_params *params)
3151 {
3152         if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3153             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3154                 nl80211_remove_monitor_interface(drv);
3155                 return -1;
3156         }
3157
3158         /* TODO: setup monitor interface (and add code somewhere to remove this
3159          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3160
3161         return 0;
3162 }
3163 #endif /* CONFIG_AP */
3164
3165
3166 #ifndef HOSTAPD
3167 static int wpa_driver_nl80211_associate(
3168         void *priv, struct wpa_driver_associate_params *params)
3169 {
3170         struct wpa_driver_nl80211_data *drv = priv;
3171         int ret = -1;
3172         struct nl_msg *msg;
3173
3174 #ifdef CONFIG_AP
3175         if (params->mode == 2)
3176                 return wpa_driver_nl80211_ap(drv, params);
3177 #endif /* CONFIG_AP */
3178
3179 #ifndef NO_WEXT
3180         wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
3181                                           params->drop_unencrypted);
3182 #endif /* NO_WEXT */
3183
3184         drv->associated = 0;
3185
3186         msg = nlmsg_alloc();
3187         if (!msg)
3188                 return -1;
3189
3190         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3191                    drv->ifindex);
3192         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3193                     NL80211_CMD_ASSOCIATE, 0);
3194
3195         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3196         if (params->bssid) {
3197                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3198                            MAC2STR(params->bssid));
3199                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3200         }
3201         if (params->freq) {
3202                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3203                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3204         }
3205         if (params->ssid) {
3206                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3207                                   params->ssid, params->ssid_len);
3208                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3209                         params->ssid);
3210                 if (params->ssid_len > sizeof(drv->ssid))
3211                         goto nla_put_failure;
3212                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3213                 drv->ssid_len = params->ssid_len;
3214         }
3215         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3216         if (params->wpa_ie)
3217                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3218                         params->wpa_ie);
3219
3220 #ifdef CONFIG_IEEE80211W
3221         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3222                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3223 #endif /* CONFIG_IEEE80211W */
3224
3225         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3226
3227         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3228         msg = NULL;
3229         if (ret) {
3230                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3231                            "(%s)", ret, strerror(-ret));
3232                 goto nla_put_failure;
3233         }
3234         ret = 0;
3235         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3236                    "successfully");
3237
3238 nla_put_failure:
3239         nlmsg_free(msg);
3240         return ret;
3241 }
3242 #endif /* HOSTAPD */
3243
3244
3245 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3246                             int ifindex, int mode)
3247 {
3248         struct nl_msg *msg;
3249         int ret = -ENOBUFS;
3250
3251         msg = nlmsg_alloc();
3252         if (!msg)
3253                 return -ENOMEM;
3254
3255         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3256                     0, NL80211_CMD_SET_INTERFACE, 0);
3257         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3258         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3259
3260         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3261         if (!ret)
3262                 return 0;
3263 nla_put_failure:
3264         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3265                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3266         return ret;
3267 }
3268
3269
3270 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3271 {
3272         struct wpa_driver_nl80211_data *drv = priv;
3273         int ret = -1;
3274         int nlmode;
3275
3276         switch (mode) {
3277         case 0:
3278                 nlmode = NL80211_IFTYPE_STATION;
3279                 break;
3280         case 1:
3281                 nlmode = NL80211_IFTYPE_ADHOC;
3282                 break;
3283         case 2:
3284                 nlmode = NL80211_IFTYPE_AP;
3285                 break;
3286         default:
3287                 return -1;
3288         }
3289
3290         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3291                 drv->nlmode = nlmode;
3292                 ret = 0;
3293                 goto done;
3294         }
3295
3296         if (nlmode == drv->nlmode) {
3297                 ret = 0;
3298                 goto done; /* Already in the requested mode */
3299         }
3300
3301         /* mac80211 doesn't allow mode changes while the device is up, so
3302          * take the device down, try to set the mode again, and bring the
3303          * device back up.
3304          */
3305         if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3306                 /* Try to set the mode again while the interface is down */
3307                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3308                 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3309                         ret = -1;
3310         }
3311
3312         if (!ret)
3313                 drv->nlmode = nlmode;
3314
3315 done:
3316 #if defined(CONFIG_AP) || defined(HOSTAPD)
3317         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3318                 /* Setup additional AP mode functionality if needed */
3319                 if (drv->monitor_ifidx < 0 &&
3320                     nl80211_create_monitor_interface(drv))
3321                         return -1;
3322         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3323                 /* Remove additional AP mode functionality */
3324                 nl80211_remove_monitor_interface(drv);
3325         }
3326 #endif /* CONFIG_AP || HOSTAPD */
3327
3328         return ret;
3329 }
3330
3331
3332 #ifndef HOSTAPD
3333
3334 static int wpa_driver_nl80211_get_capa(void *priv,
3335                                        struct wpa_driver_capa *capa)
3336 {
3337         struct wpa_driver_nl80211_data *drv = priv;
3338         if (!drv->has_capability)
3339                 return -1;
3340         os_memcpy(capa, &drv->capa, sizeof(*capa));
3341         return 0;
3342 }
3343
3344
3345 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3346 {
3347         struct wpa_driver_nl80211_data *drv = priv;
3348
3349         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3350                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3351         drv->operstate = state;
3352         return wpa_driver_nl80211_send_oper_ifla(
3353                 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3354 }
3355
3356
3357 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3358 {
3359         struct wpa_driver_nl80211_data *drv = priv;
3360         struct nl_msg *msg;
3361         struct nl80211_sta_flag_update upd;
3362
3363         msg = nlmsg_alloc();
3364         if (!msg)
3365                 return -ENOMEM;
3366
3367         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3368                     0, NL80211_CMD_SET_STATION, 0);
3369
3370         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3371                     if_nametoindex(drv->ifname));
3372         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3373
3374         os_memset(&upd, 0, sizeof(upd));
3375         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3376         if (authorized)
3377                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3378         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3379
3380         return send_and_recv_msgs(drv, msg, NULL, NULL);
3381  nla_put_failure:
3382         return -ENOBUFS;
3383 }
3384
3385 #endif /* HOSTAPD */
3386
3387
3388 #ifdef HOSTAPD
3389
3390 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3391                                  int ifindex)
3392 {
3393         struct i802_bss *bss = &drv->bss;
3394         while (bss) {
3395                 if (ifindex == bss->ifindex)
3396                         return bss;
3397                 bss = bss->next;
3398         }
3399         wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3400         return NULL;
3401 }
3402
3403
3404 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3405 {
3406         int i;
3407         int *old;
3408
3409         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3410                    ifidx);
3411         for (i = 0; i < drv->num_if_indices; i++) {
3412                 if (drv->if_indices[i] == 0) {
3413                         drv->if_indices[i] = ifidx;
3414                         return;
3415                 }
3416         }
3417
3418         if (drv->if_indices != drv->default_if_indices)
3419                 old = drv->if_indices;
3420         else
3421                 old = NULL;
3422
3423         drv->if_indices = realloc(old,
3424                                   sizeof(int) * (drv->num_if_indices + 1));
3425         if (!drv->if_indices) {
3426                 if (!old)
3427                         drv->if_indices = drv->default_if_indices;
3428                 else
3429                         drv->if_indices = old;
3430                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3431                            "interfaces");
3432                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3433                 return;
3434         }
3435         drv->if_indices[drv->num_if_indices] = ifidx;
3436         drv->num_if_indices++;
3437 }
3438
3439
3440 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3441 {
3442         int i;
3443
3444         for (i = 0; i < drv->num_if_indices; i++) {
3445                 if (drv->if_indices[i] == ifidx) {
3446                         drv->if_indices[i] = 0;
3447                         break;
3448                 }
3449         }
3450 }
3451
3452
3453 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3454 {
3455         int i;
3456
3457         for (i = 0; i < drv->num_if_indices; i++)
3458                 if (drv->if_indices[i] == ifidx)
3459                         return 1;
3460
3461         return 0;
3462 }
3463
3464
3465 static int i802_set_key(const char *iface, void *priv, wpa_alg alg,
3466                         const u8 *addr, int key_idx, int set_tx, const u8 *seq,
3467                         size_t seq_len, const u8 *key, size_t key_len)
3468 {
3469         struct wpa_driver_nl80211_data *drv = priv;
3470         return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
3471                            set_tx, seq, seq_len, key, key_len);
3472 }
3473
3474
3475 static inline int min_int(int a, int b)
3476 {
3477         if (a < b)
3478                 return a;
3479         return b;
3480 }
3481
3482
3483 static int get_key_handler(struct nl_msg *msg, void *arg)
3484 {
3485         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3486         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3487
3488         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3489                   genlmsg_attrlen(gnlh, 0), NULL);
3490
3491         /*
3492          * TODO: validate the key index and mac address!
3493          * Otherwise, there's a race condition as soon as
3494          * the kernel starts sending key notifications.
3495          */
3496
3497         if (tb[NL80211_ATTR_KEY_SEQ])
3498                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3499                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3500         return NL_SKIP;
3501 }
3502
3503
3504 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3505                            int idx, u8 *seq)
3506 {
3507         struct wpa_driver_nl80211_data *drv = priv;
3508         struct nl_msg *msg;
3509
3510         msg = nlmsg_alloc();
3511         if (!msg)
3512                 return -ENOMEM;
3513
3514         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3515                     0, NL80211_CMD_GET_KEY, 0);
3516
3517         if (addr)
3518                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3519         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3520         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3521
3522         memset(seq, 0, 6);
3523
3524         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3525  nla_put_failure:
3526         return -ENOBUFS;
3527 }
3528
3529
3530 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3531                               int mode)
3532 {
3533         struct wpa_driver_nl80211_data *drv = priv;
3534         struct nl_msg *msg;
3535         u8 rates[NL80211_MAX_SUPP_RATES];
3536         u8 rates_len = 0;
3537         int i;
3538
3539         msg = nlmsg_alloc();
3540         if (!msg)
3541                 return -ENOMEM;
3542
3543         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3544                     NL80211_CMD_SET_BSS, 0);
3545
3546         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3547                 rates[rates_len++] = basic_rates[i] / 5;
3548
3549         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3550
3551         /* TODO: multi-BSS support */
3552         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3553
3554         return send_and_recv_msgs(drv, msg, NULL, NULL);
3555  nla_put_failure:
3556         return -ENOBUFS;
3557 }
3558
3559
3560 /* Set kernel driver on given frequency (MHz) */
3561 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3562 {
3563         struct wpa_driver_nl80211_data *drv = priv;
3564         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3565                                            freq->sec_channel_offset);
3566 }
3567
3568
3569 static int i802_set_rts(void *priv, int rts)
3570 {
3571         struct wpa_driver_nl80211_data *drv = priv;
3572         struct nl_msg *msg;
3573         int ret = -ENOBUFS;
3574         u32 val;
3575
3576         msg = nlmsg_alloc();
3577         if (!msg)
3578                 return -ENOMEM;
3579
3580         if (rts >= 2347)
3581                 val = (u32) -1;
3582         else
3583                 val = rts;
3584
3585         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3586                     0, NL80211_CMD_SET_WIPHY, 0);
3587         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3588         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3589
3590         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3591         if (!ret)
3592                 return 0;
3593 nla_put_failure:
3594         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3595                    "%d (%s)", rts, ret, strerror(-ret));
3596         return ret;
3597 }
3598
3599
3600 static int i802_set_frag(void *priv, int frag)
3601 {
3602         struct wpa_driver_nl80211_data *drv = priv;
3603         struct nl_msg *msg;
3604         int ret = -ENOBUFS;
3605         u32 val;
3606
3607         msg = nlmsg_alloc();
3608         if (!msg)
3609                 return -ENOMEM;
3610
3611         if (frag >= 2346)
3612                 val = (u32) -1;
3613         else
3614                 val = frag;
3615
3616         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3617                     0, NL80211_CMD_SET_WIPHY, 0);
3618         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3619         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3620
3621         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3622         if (!ret)
3623                 return 0;
3624 nla_put_failure:
3625         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3626                    "%d: %d (%s)", frag, ret, strerror(-ret));
3627         return ret;
3628 }
3629
3630
3631 static int i802_flush(void *priv)
3632 {
3633         struct wpa_driver_nl80211_data *drv = priv;
3634         struct nl_msg *msg;
3635
3636         msg = nlmsg_alloc();
3637         if (!msg)
3638                 return -1;
3639
3640         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3641                     0, NL80211_CMD_DEL_STATION, 0);
3642
3643         /*
3644          * XXX: FIX! this needs to flush all VLANs too
3645          */
3646         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3647                     if_nametoindex(drv->ifname));
3648
3649         return send_and_recv_msgs(drv, msg, NULL, NULL);
3650  nla_put_failure:
3651         return -ENOBUFS;
3652 }
3653
3654
3655 static int get_sta_handler(struct nl_msg *msg, void *arg)
3656 {
3657         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3658         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3659         struct hostap_sta_driver_data *data = arg;
3660         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3661         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3662                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3663                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3664                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3665                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3666                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3667         };
3668
3669         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3670                   genlmsg_attrlen(gnlh, 0), NULL);
3671
3672         /*
3673          * TODO: validate the interface and mac address!
3674          * Otherwise, there's a race condition as soon as
3675          * the kernel starts sending station notifications.
3676          */
3677
3678         if (!tb[NL80211_ATTR_STA_INFO]) {
3679                 wpa_printf(MSG_DEBUG, "sta stats missing!");
3680                 return NL_SKIP;
3681         }
3682         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3683                              tb[NL80211_ATTR_STA_INFO],
3684                              stats_policy)) {
3685                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3686                 return NL_SKIP;
3687         }
3688
3689         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3690                 data->inactive_msec =
3691                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3692         if (stats[NL80211_STA_INFO_RX_BYTES])
3693                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3694         if (stats[NL80211_STA_INFO_TX_BYTES])
3695                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3696         if (stats[NL80211_STA_INFO_RX_PACKETS])
3697                 data->rx_packets =
3698                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3699         if (stats[NL80211_STA_INFO_TX_PACKETS])
3700                 data->tx_packets =
3701                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3702
3703         return NL_SKIP;
3704 }
3705
3706 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3707                               const u8 *addr)
3708 {
3709         struct wpa_driver_nl80211_data *drv = priv;
3710         struct nl_msg *msg;
3711
3712         os_memset(data, 0, sizeof(*data));
3713         msg = nlmsg_alloc();
3714         if (!msg)
3715                 return -ENOMEM;
3716
3717         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3718                     0, NL80211_CMD_GET_STATION, 0);
3719
3720         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3721         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3722
3723         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3724  nla_put_failure:
3725         return -ENOBUFS;
3726 }
3727
3728
3729 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3730                                     int cw_min, int cw_max, int burst_time)
3731 {
3732         struct wpa_driver_nl80211_data *drv = priv;
3733         struct nl_msg *msg;
3734         struct nlattr *txq, *params;
3735
3736         msg = nlmsg_alloc();
3737         if (!msg)
3738                 return -1;
3739
3740         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3741                     0, NL80211_CMD_SET_WIPHY, 0);
3742
3743         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3744
3745         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
3746         if (!txq)
3747                 goto nla_put_failure;
3748
3749         /* We are only sending parameters for a single TXQ at a time */
3750         params = nla_nest_start(msg, 1);
3751         if (!params)
3752                 goto nla_put_failure;
3753
3754         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
3755         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
3756          * 32 usec, so need to convert the value here. */
3757         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
3758         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
3759         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
3760         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
3761
3762         nla_nest_end(msg, params);
3763
3764         nla_nest_end(msg, txq);
3765
3766         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3767                 return 0;
3768  nla_put_failure:
3769         return -1;
3770 }
3771
3772
3773 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
3774 {
3775         struct wpa_driver_nl80211_data *drv = priv;
3776         int ifidx;
3777         struct i802_bss *bss;
3778
3779         bss = os_zalloc(sizeof(*bss));
3780         if (bss == NULL)
3781                 return -1;
3782
3783         ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
3784         if (ifidx < 0) {
3785                 os_free(bss);
3786                 return -1;
3787         }
3788         bss->ifindex = ifidx;
3789         if (hostapd_set_iface_flags(priv, ifname, 1)) {
3790                 nl80211_remove_iface(priv, ifidx);
3791                 os_free(bss);
3792                 return -1;
3793         }
3794         bss->next = drv->bss.next;
3795         drv->bss.next = bss;
3796         return 0;
3797 }
3798
3799
3800 static int i802_bss_remove(void *priv, const char *ifname)
3801 {
3802         struct wpa_driver_nl80211_data *drv = priv;
3803         struct i802_bss *bss, *prev;
3804         int ifindex = if_nametoindex(ifname);
3805         nl80211_remove_iface(priv, ifindex);
3806         prev = &drv->bss;
3807         bss = drv->bss.next;
3808         while (bss) {
3809                 if (ifindex == bss->ifindex) {
3810                         prev->next = bss->next;
3811                         os_free(bss);
3812                         break;
3813                 }
3814                 prev = bss;
3815                 bss = bss->next;
3816         }
3817         return 0;
3818 }
3819
3820
3821 static int i802_set_beacon(const char *iface, void *priv,
3822                            const u8 *head, size_t head_len,
3823                            const u8 *tail, size_t tail_len, int dtim_period)
3824 {
3825         return wpa_driver_nl80211_set_beacon_iface(if_nametoindex(iface), priv,
3826                                                    head, head_len,
3827                                                    tail, tail_len,
3828                                                    dtim_period);
3829 }
3830
3831
3832 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
3833 {
3834         struct wpa_driver_nl80211_data *drv = priv;
3835         struct nl_msg *msg;
3836
3837         msg = nlmsg_alloc();
3838         if (!msg)
3839                 return -ENOMEM;
3840
3841         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3842                     NL80211_CMD_SET_BSS, 0);
3843
3844         if (cts >= 0)
3845                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3846         if (preamble >= 0)
3847                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3848         if (slot >= 0)
3849                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3850
3851         /* TODO: multi-BSS support */
3852         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3853
3854         return send_and_recv_msgs(drv, msg, NULL, NULL);
3855  nla_put_failure:
3856         return -ENOBUFS;
3857 }
3858
3859
3860 static int i802_set_cts_protect(void *priv, int value)
3861 {
3862         return i802_set_bss(priv, value, -1, -1);
3863 }
3864
3865
3866 static int i802_set_preamble(void *priv, int value)
3867 {
3868         return i802_set_bss(priv, -1, value, -1);
3869 }
3870
3871
3872 static int i802_set_short_slot_time(void *priv, int value)
3873 {
3874         return i802_set_bss(priv, -1, -1, value);
3875 }
3876
3877
3878 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
3879 {
3880         switch (type) {
3881         case HOSTAPD_IF_VLAN:
3882                 return NL80211_IFTYPE_AP_VLAN;
3883         }
3884         return -1;
3885 }
3886
3887
3888 static int i802_if_add(const char *iface, void *priv,
3889                        enum hostapd_driver_if_type type, char *ifname,
3890                        const u8 *addr)
3891 {
3892         if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
3893                 return -1;
3894         return 0;
3895 }
3896
3897
3898 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
3899                           char *ifname, const u8 *addr)
3900 {
3901         /* unused at the moment */
3902         return -1;
3903 }
3904
3905
3906 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
3907                           const char *ifname, const u8 *addr)
3908 {
3909         nl80211_remove_iface(priv, if_nametoindex(ifname));
3910         return 0;
3911 }
3912
3913
3914 static int i802_set_sta_vlan(void *priv, const u8 *addr,
3915                              const char *ifname, int vlan_id)
3916 {
3917         struct wpa_driver_nl80211_data *drv = priv;
3918         struct nl_msg *msg;
3919
3920         msg = nlmsg_alloc();
3921         if (!msg)
3922                 return -ENOMEM;
3923
3924         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3925                     0, NL80211_CMD_SET_STATION, 0);
3926
3927         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3928                     if_nametoindex(drv->ifname));
3929         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3930         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3931                     if_nametoindex(ifname));
3932
3933         return send_and_recv_msgs(drv, msg, NULL, NULL);
3934  nla_put_failure:
3935         return -ENOBUFS;
3936 }
3937
3938
3939 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
3940 {
3941         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3942         struct sockaddr_ll lladdr;
3943         unsigned char buf[3000];
3944         int len;
3945         socklen_t fromlen = sizeof(lladdr);
3946
3947         len = recvfrom(sock, buf, sizeof(buf), 0,
3948                        (struct sockaddr *)&lladdr, &fromlen);
3949         if (len < 0) {
3950                 perror("recv");
3951                 return;
3952         }
3953
3954         if (have_ifidx(drv, lladdr.sll_ifindex)) {
3955                 void *ctx;
3956                 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
3957                 if (!ctx)
3958                         return;
3959                 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
3960         }
3961 }
3962
3963
3964 static int i802_get_inact_sec(void *priv, const u8 *addr)
3965 {
3966         struct hostap_sta_driver_data data;
3967         int ret;
3968
3969         data.inactive_msec = (unsigned long) -1;
3970         ret = i802_read_sta_data(priv, &data, addr);
3971         if (ret || data.inactive_msec == (unsigned long) -1)
3972                 return -1;
3973         return data.inactive_msec / 1000;
3974 }
3975
3976
3977 static int i802_sta_clear_stats(void *priv, const u8 *addr)
3978 {
3979 #if 0
3980         /* TODO */
3981 #endif
3982         return 0;
3983 }
3984
3985
3986 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
3987                            int reason)
3988 {
3989         struct wpa_driver_nl80211_data *drv = priv;
3990         struct ieee80211_mgmt mgmt;
3991
3992         memset(&mgmt, 0, sizeof(mgmt));
3993         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3994                                           WLAN_FC_STYPE_DEAUTH);
3995         memcpy(mgmt.da, addr, ETH_ALEN);
3996         memcpy(mgmt.sa, own_addr, ETH_ALEN);
3997         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
3998         mgmt.u.deauth.reason_code = host_to_le16(reason);
3999         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4000                                             IEEE80211_HDRLEN +
4001                                             sizeof(mgmt.u.deauth));
4002 }
4003
4004
4005 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4006                              int reason)
4007 {
4008         struct wpa_driver_nl80211_data *drv = priv;
4009         struct ieee80211_mgmt mgmt;
4010
4011         memset(&mgmt, 0, sizeof(mgmt));
4012         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4013                                           WLAN_FC_STYPE_DISASSOC);
4014         memcpy(mgmt.da, addr, ETH_ALEN);
4015         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4016         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4017         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4018         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4019                                             IEEE80211_HDRLEN +
4020                                             sizeof(mgmt.u.disassoc));
4021 }
4022
4023
4024 static void *i802_init(struct hostapd_data *hapd,
4025                        struct wpa_init_params *params)
4026 {
4027         struct wpa_driver_nl80211_data *drv;
4028         size_t i;
4029
4030         drv = wpa_driver_nl80211_init(hapd, params->ifname);
4031         if (drv == NULL)
4032                 return NULL;
4033
4034         drv->bss.ifindex = drv->ifindex;
4035
4036         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4037         drv->if_indices = drv->default_if_indices;
4038         for (i = 0; i < params->num_bridge; i++) {
4039                 if (params->bridge[i])
4040                         add_ifidx(drv, if_nametoindex(params->bridge[i]));
4041         }
4042
4043         /* start listening for EAPOL on the default AP interface */
4044         add_ifidx(drv, drv->ifindex);
4045
4046         if (params->bssid) {
4047                 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4048                         goto failed;
4049
4050                 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4051                         goto failed;
4052         }
4053
4054         if (nl80211_set_mode(drv, drv->ifindex, NL80211_IFTYPE_AP)) {
4055                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4056                            "into AP mode", drv->ifname);
4057                 goto failed;
4058         }
4059
4060         if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4061                 goto failed;
4062
4063         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4064         if (drv->eapol_sock < 0) {
4065                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4066                 goto failed;
4067         }
4068
4069         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4070         {
4071                 printf("Could not register read socket for eapol\n");
4072                 goto failed;
4073         }
4074
4075         if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4076                 goto failed;
4077
4078         return drv;
4079
4080 failed:
4081         nl80211_remove_monitor_interface(drv);
4082         if (drv->ioctl_sock >= 0)
4083                 close(drv->ioctl_sock);
4084
4085         genl_family_put(drv->nl80211);
4086         nl_cache_free(drv->nl_cache);
4087         nl_handle_destroy(drv->nl_handle);
4088         nl_cb_put(drv->nl_cb);
4089
4090         os_free(drv);
4091         return NULL;
4092 }
4093
4094
4095 static void i802_deinit(void *priv)
4096 {
4097         wpa_driver_nl80211_deinit(priv);
4098 }
4099
4100 #endif /* HOSTAPD */
4101
4102
4103 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4104         .name = "nl80211",
4105         .desc = "Linux nl80211/cfg80211",
4106 #ifndef HOSTAPD
4107         .get_bssid = wpa_driver_nl80211_get_bssid,
4108         .get_ssid = wpa_driver_nl80211_get_ssid,
4109         .set_key = wpa_driver_nl80211_set_key,
4110 #endif /* HOSTAPD */
4111         .scan2 = wpa_driver_nl80211_scan,
4112         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4113 #ifndef HOSTAPD
4114         .deauthenticate = wpa_driver_nl80211_deauthenticate,
4115         .disassociate = wpa_driver_nl80211_disassociate,
4116         .authenticate = wpa_driver_nl80211_authenticate,
4117         .associate = wpa_driver_nl80211_associate,
4118         .init = wpa_driver_nl80211_init,
4119         .deinit = wpa_driver_nl80211_deinit,
4120         .get_capa = wpa_driver_nl80211_get_capa,
4121         .set_operstate = wpa_driver_nl80211_set_operstate,
4122         .set_supp_port = wpa_driver_nl80211_set_supp_port,
4123 #endif /* HOSTAPD */
4124         .set_country = wpa_driver_nl80211_set_country,
4125         .set_mode = wpa_driver_nl80211_set_mode,
4126 #ifdef CONFIG_AP
4127         .set_beacon = wpa_driver_nl80211_set_beacon,
4128 #endif /* CONFIG_AP */
4129 #if defined(CONFIG_AP) || defined(HOSTAPD)
4130         .send_mlme = wpa_driver_nl80211_send_mlme,
4131         .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
4132         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4133         .sta_add = wpa_driver_nl80211_sta_add,
4134         .sta_remove = wpa_driver_nl80211_sta_remove,
4135         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4136         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4137 #endif /* CONFIG_AP || HOSTAPD */
4138 #ifdef HOSTAPD
4139         .hapd_init = i802_init,
4140         .hapd_deinit = i802_deinit,
4141         .hapd_set_key = i802_set_key,
4142         .get_seqnum = i802_get_seqnum,
4143         .flush = i802_flush,
4144         .read_sta_data = i802_read_sta_data,
4145         .sta_deauth = i802_sta_deauth,
4146         .sta_disassoc = i802_sta_disassoc,
4147         .get_inact_sec = i802_get_inact_sec,
4148         .sta_clear_stats = i802_sta_clear_stats,
4149         .set_freq = i802_set_freq,
4150         .set_rts = i802_set_rts,
4151         .set_frag = i802_set_frag,
4152         .set_rate_sets = i802_set_rate_sets,
4153         .hapd_set_beacon = i802_set_beacon,
4154         .set_cts_protect = i802_set_cts_protect,
4155         .set_preamble = i802_set_preamble,
4156         .set_short_slot_time = i802_set_short_slot_time,
4157         .set_tx_queue_params = i802_set_tx_queue_params,
4158         .bss_add = i802_bss_add,
4159         .bss_remove = i802_bss_remove,
4160         .if_add = i802_if_add,
4161         .if_update = i802_if_update,
4162         .if_remove = i802_if_remove,
4163         .set_sta_vlan = i802_set_sta_vlan,
4164 #endif /* HOSTAPD */
4165 };