git.maemo.org Git - wpasupplicant/blob - hostapd/driver_madwifi.c

   1 /*
   2  * hostapd / Driver interaction with MADWIFI 802.11 driver
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, Video54 Technologies
   5  * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Alternatively, this software may be distributed under the terms of BSD
  12  * license.
  13  *
  14  * See README and COPYING for more details.
  15  */
  16
  17 #include "includes.h"
  18 #include <net/if.h>
  19 #include <sys/ioctl.h>
  20
  21 #include <include/compat.h>
  22 #include <net80211/ieee80211.h>
  23 #ifdef WME_NUM_AC
  24 /* Assume this is built against BSD branch of madwifi driver. */
  25 #define MADWIFI_BSD
  26 #include <net80211/_ieee80211.h>
  27 #endif /* WME_NUM_AC */
  28 #include <net80211/ieee80211_crypto.h>
  29 #include <net80211/ieee80211_ioctl.h>
  30
  31 #ifdef CONFIG_WPS
  32 #ifdef IEEE80211_IOCTL_FILTERFRAME
  33 #include <netpacket/packet.h>
  34
  35 #ifndef ETH_P_80211_RAW
  36 #define ETH_P_80211_RAW 0x0019
  37 #endif
  38 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  39 #endif /* CONFIG_WPS */
  40
  41 /*
  42  * Avoid conflicts with hostapd definitions by undefining couple of defines
  43  * from madwifi header files.
  44  */
  45 #undef RSN_VERSION
  46 #undef WPA_VERSION
  47 #undef WPA_OUI_TYPE
  48 #undef WME_OUI_TYPE
  49
  50
  51 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  52 /* Assume this is built against madwifi-ng */
  53 #define MADWIFI_NG
  54 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  55
  56 #include "wireless_copy.h"
  57
  58 #include "hostapd.h"
  59 #include "driver.h"
  60 #include "eloop.h"
  61 #include "priv_netlink.h"
  62 #include "l2_packet/l2_packet.h"
  63
  64 #include "common.h"
  65 #include "wps_hostapd.h"
  66 #include "ieee802_11_defs.h"
  67
  68
  69 struct madwifi_driver_data {
  70         struct hostapd_data *hapd;              /* back pointer */
  71
  72         char    iface[IFNAMSIZ + 1];
  73         int     ifindex;
  74         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  75         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  76         int     ioctl_sock;                     /* socket for ioctl() use */
  77         int     wext_sock;                      /* socket for wireless events */
  78         int     we_version;
  79         u8      acct_mac[ETH_ALEN];
  80         struct hostap_sta_driver_data acct_data;
  81
  82         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  83 };
  84
  85 static int madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code);
  86
  87 static int
  88 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
  89 {
  90         struct iwreq iwr;
  91         int do_inline = len < IFNAMSIZ;
  92
  93         memset(&iwr, 0, sizeof(iwr));
  94         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
  95 #ifdef IEEE80211_IOCTL_FILTERFRAME
  96         /* FILTERFRAME must be NOT inline, regardless of size. */
  97         if (op == IEEE80211_IOCTL_FILTERFRAME)
  98                 do_inline = 0;
  99 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 100         if (op == IEEE80211_IOCTL_SET_APPIEBUF)
 101                 do_inline = 0;
 102         if (do_inline) {
 103                 /*
 104                  * Argument data fits inline; put it there.
 105                  */
 106                 memcpy(iwr.u.name, data, len);
 107         } else {
 108                 /*
 109                  * Argument data too big for inline transfer; setup a
 110                  * parameter block instead; the kernel will transfer
 111                  * the data for the driver.
 112                  */
 113                 iwr.u.data.pointer = data;
 114                 iwr.u.data.length = len;
 115         }
 116
 117         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 118 #ifdef MADWIFI_NG
 119                 int first = IEEE80211_IOCTL_SETPARAM;
 120                 static const char *opnames[] = {
 121                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 122                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 123                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 124                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 125                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 126                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 127                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 128                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 129                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 130                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 131                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 132                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 133                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 134                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 135                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 136                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 137                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 138                         NULL,
 139                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 140                         NULL,
 141                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 142                         NULL,
 143                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 144                         NULL,
 145                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 146                         NULL,
 147                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 148                         NULL,
 149                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 150                         NULL,
 151                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 152                 };
 153 #else /* MADWIFI_NG */
 154                 int first = IEEE80211_IOCTL_SETPARAM;
 155                 static const char *opnames[] = {
 156                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 157                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 158                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 159                         "ioctl[SIOCIWFIRSTPRIV+3]",
 160                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 161                         "ioctl[SIOCIWFIRSTPRIV+5]",
 162                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 163                         "ioctl[SIOCIWFIRSTPRIV+7]",
 164                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 165                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 166                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 167                         "ioctl[SIOCIWFIRSTPRIV+11]",
 168                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 169                         "ioctl[SIOCIWFIRSTPRIV+13]",
 170                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 171                         "ioctl[SIOCIWFIRSTPRIV+15]",
 172                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 173                         "ioctl[SIOCIWFIRSTPRIV+17]",
 174                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 175                 };
 176 #endif /* MADWIFI_NG */
 177                 int idx = op - first;
 178                 if (first <= op &&
 179                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 180                     opnames[idx])
 181                         perror(opnames[idx]);
 182                 else
 183                         perror("ioctl[unknown???]");
 184                 return -1;
 185         }
 186         return 0;
 187 }
 188
 189 static int
 190 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 191 {
 192         struct iwreq iwr;
 193
 194         memset(&iwr, 0, sizeof(iwr));
 195         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 196         iwr.u.mode = op;
 197         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 198
 199         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 200                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 201                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 202                            "arg %d)", __func__, op, arg);
 203                 return -1;
 204         }
 205         return 0;
 206 }
 207
 208 #ifndef CONFIG_NO_STDOUT_DEBUG
 209 static const char *
 210 ether_sprintf(const u8 *addr)
 211 {
 212         static char buf[sizeof(MACSTR)];
 213
 214         if (addr != NULL)
 215                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 216         else
 217                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 218         return buf;
 219 }
 220 #endif /* CONFIG_NO_STDOUT_DEBUG */
 221
 222 /*
 223  * Configure WPA parameters.
 224  */
 225 static int
 226 madwifi_configure_wpa(struct madwifi_driver_data *drv)
 227 {
 228         struct hostapd_data *hapd = drv->hapd;
 229         struct hostapd_bss_config *conf = hapd->conf;
 230         int v;
 231
 232         switch (conf->wpa_group) {
 233         case WPA_CIPHER_CCMP:
 234                 v = IEEE80211_CIPHER_AES_CCM;
 235                 break;
 236         case WPA_CIPHER_TKIP:
 237                 v = IEEE80211_CIPHER_TKIP;
 238                 break;
 239         case WPA_CIPHER_WEP104:
 240                 v = IEEE80211_CIPHER_WEP;
 241                 break;
 242         case WPA_CIPHER_WEP40:
 243                 v = IEEE80211_CIPHER_WEP;
 244                 break;
 245         case WPA_CIPHER_NONE:
 246                 v = IEEE80211_CIPHER_NONE;
 247                 break;
 248         default:
 249                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 250                            conf->wpa_group);
 251                 return -1;
 252         }
 253         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 254         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 255                 printf("Unable to set group key cipher to %u\n", v);
 256                 return -1;
 257         }
 258         if (v == IEEE80211_CIPHER_WEP) {
 259                 /* key length is done only for specific ciphers */
 260                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 261                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 262                         printf("Unable to set group key length to %u\n", v);
 263                         return -1;
 264                 }
 265         }
 266
 267         v = 0;
 268         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 269                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 270         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 271                 v |= 1<<IEEE80211_CIPHER_TKIP;
 272         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 273                 v |= 1<<IEEE80211_CIPHER_NONE;
 274         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 275         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 276                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 277                 return -1;
 278         }
 279
 280         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 281                    __func__, conf->wpa_key_mgmt);
 282         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
 283                 printf("Unable to set key management algorithms to 0x%x\n",
 284                         conf->wpa_key_mgmt);
 285                 return -1;
 286         }
 287
 288         v = 0;
 289         if (conf->rsn_preauth)
 290                 v |= BIT(0);
 291         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 292                    __func__, conf->rsn_preauth);
 293         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 294                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 295                 return -1;
 296         }
 297
 298         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
 299         if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
 300                 printf("Unable to set WPA to %u\n", conf->wpa);
 301                 return -1;
 302         }
 303         return 0;
 304 }
 305
 306
 307 static int
 308 madwifi_set_iface_flags(void *priv, int dev_up)
 309 {
 310         struct madwifi_driver_data *drv = priv;
 311         struct ifreq ifr;
 312
 313         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 314
 315         if (drv->ioctl_sock < 0)
 316                 return -1;
 317
 318         memset(&ifr, 0, sizeof(ifr));
 319         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 320
 321         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 322                 perror("ioctl[SIOCGIFFLAGS]");
 323                 return -1;
 324         }
 325
 326         if (dev_up)
 327                 ifr.ifr_flags |= IFF_UP;
 328         else
 329                 ifr.ifr_flags &= ~IFF_UP;
 330
 331         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 332                 perror("ioctl[SIOCSIFFLAGS]");
 333                 return -1;
 334         }
 335
 336         if (dev_up) {
 337                 memset(&ifr, 0, sizeof(ifr));
 338                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 339                 ifr.ifr_mtu = HOSTAPD_MTU;
 340                 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
 341                         perror("ioctl[SIOCSIFMTU]");
 342                         printf("Setting MTU failed - trying to survive with "
 343                                "current value\n");
 344                 }
 345         }
 346
 347         return 0;
 348 }
 349
 350 static int
 351 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
 352 {
 353         struct madwifi_driver_data *drv = priv;
 354         struct hostapd_data *hapd = drv->hapd;
 355         struct hostapd_bss_config *conf = hapd->conf;
 356
 357         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 358
 359         if (!enabled) {
 360                 /* XXX restore state */
 361                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 362                         IEEE80211_AUTH_AUTO);
 363         }
 364         if (!conf->wpa && !conf->ieee802_1x) {
 365                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 366                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 367                 return -1;
 368         }
 369         if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
 370                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 371                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 372                 return -1;
 373         }
 374         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 375                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 376                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 377                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 378                 return -1;
 379         }
 380
 381         return 0;
 382 }
 383
 384 static int
 385 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 386 {
 387         struct madwifi_driver_data *drv = priv;
 388
 389         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 390
 391         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 392 }
 393
 394 static int
 395 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 396 {
 397         struct madwifi_driver_data *drv = priv;
 398         struct ieee80211req_mlme mlme;
 399         int ret;
 400
 401         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 402                    __func__, ether_sprintf(addr), authorized);
 403
 404         if (authorized)
 405                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 406         else
 407                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 408         mlme.im_reason = 0;
 409         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 410         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 411         if (ret < 0) {
 412                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 413                            __func__, authorized ? "" : "un", MAC2STR(addr));
 414         }
 415
 416         return ret;
 417 }
 418
 419 static int
 420 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 421                       int flags_or, int flags_and)
 422 {
 423         /* For now, only support setting Authorized flag */
 424         if (flags_or & WLAN_STA_AUTHORIZED)
 425                 return madwifi_set_sta_authorized(priv, addr, 1);
 426         if (!(flags_and & WLAN_STA_AUTHORIZED))
 427                 return madwifi_set_sta_authorized(priv, addr, 0);
 428         return 0;
 429 }
 430
 431 static int
 432 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 433 {
 434         struct madwifi_driver_data *drv = priv;
 435         struct ieee80211req_del_key wk;
 436         int ret;
 437
 438         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 439                    __func__, ether_sprintf(addr), key_idx);
 440
 441         memset(&wk, 0, sizeof(wk));
 442         if (addr != NULL) {
 443                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 444                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 445         } else {
 446                 wk.idk_keyix = key_idx;
 447         }
 448
 449         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 450         if (ret < 0) {
 451                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 452                            " key_idx %d)", __func__, ether_sprintf(addr),
 453                            key_idx);
 454         }
 455
 456         return ret;
 457 }
 458
 459 static int
 460 madwifi_set_key(const char *ifname, void *priv, const char *alg,
 461                 const u8 *addr, int key_idx,
 462                 const u8 *key, size_t key_len, int txkey)
 463 {
 464         struct madwifi_driver_data *drv = priv;
 465         struct ieee80211req_key wk;
 466         u_int8_t cipher;
 467         int ret;
 468
 469         if (strcmp(alg, "none") == 0)
 470                 return madwifi_del_key(drv, addr, key_idx);
 471
 472         wpa_printf(MSG_DEBUG, "%s: alg=%s addr=%s key_idx=%d",
 473                    __func__, alg, ether_sprintf(addr), key_idx);
 474
 475         if (strcmp(alg, "WEP") == 0)
 476                 cipher = IEEE80211_CIPHER_WEP;
 477         else if (strcmp(alg, "TKIP") == 0)
 478                 cipher = IEEE80211_CIPHER_TKIP;
 479         else if (strcmp(alg, "CCMP") == 0)
 480                 cipher = IEEE80211_CIPHER_AES_CCM;
 481         else {
 482                 printf("%s: unknown/unsupported algorithm %s\n",
 483                         __func__, alg);
 484                 return -1;
 485         }
 486
 487         if (key_len > sizeof(wk.ik_keydata)) {
 488                 printf("%s: key length %lu too big\n", __func__,
 489                        (unsigned long) key_len);
 490                 return -3;
 491         }
 492
 493         memset(&wk, 0, sizeof(wk));
 494         wk.ik_type = cipher;
 495         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 496         if (addr == NULL) {
 497                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 498                 wk.ik_keyix = key_idx;
 499                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 500         } else {
 501                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 502                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 503         }
 504         wk.ik_keylen = key_len;
 505         memcpy(wk.ik_keydata, key, key_len);
 506
 507         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 508         if (ret < 0) {
 509                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 510                            " key_idx %d alg '%s' key_len %lu txkey %d)",
 511                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 512                            alg, (unsigned long) key_len, txkey);
 513         }
 514
 515         return ret;
 516 }
 517
 518
 519 static int
 520 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 521                    u8 *seq)
 522 {
 523         struct madwifi_driver_data *drv = priv;
 524         struct ieee80211req_key wk;
 525
 526         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 527                    __func__, ether_sprintf(addr), idx);
 528
 529         memset(&wk, 0, sizeof(wk));
 530         if (addr == NULL)
 531                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 532         else
 533                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 534         wk.ik_keyix = idx;
 535
 536         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 537                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 538                            "(addr " MACSTR " key_idx %d)",
 539                            __func__, MAC2STR(wk.ik_macaddr), idx);
 540                 return -1;
 541         }
 542
 543 #ifdef WORDS_BIGENDIAN
 544         {
 545                 /*
 546                  * wk.ik_keytsc is in host byte order (big endian), need to
 547                  * swap it to match with the byte order used in WPA.
 548                  */
 549                 int i;
 550                 u8 tmp[WPA_KEY_RSC_LEN];
 551                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 552                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 553                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 554                 }
 555         }
 556 #else /* WORDS_BIGENDIAN */
 557         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 558 #endif /* WORDS_BIGENDIAN */
 559         return 0;
 560 }
 561
 562
 563 static int
 564 madwifi_flush(void *priv)
 565 {
 566 #ifdef MADWIFI_BSD
 567         u8 allsta[IEEE80211_ADDR_LEN];
 568         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 569         return madwifi_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
 570 #else /* MADWIFI_BSD */
 571         return 0;               /* XXX */
 572 #endif /* MADWIFI_BSD */
 573 }
 574
 575
 576 static int
 577 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 578                              const u8 *addr)
 579 {
 580         struct madwifi_driver_data *drv = priv;
 581
 582 #ifdef MADWIFI_BSD
 583         struct ieee80211req_sta_stats stats;
 584
 585         memset(data, 0, sizeof(*data));
 586
 587         /*
 588          * Fetch statistics for station from the system.
 589          */
 590         memset(&stats, 0, sizeof(stats));
 591         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 592         if (set80211priv(drv,
 593 #ifdef MADWIFI_NG
 594                          IEEE80211_IOCTL_STA_STATS,
 595 #else /* MADWIFI_NG */
 596                          IEEE80211_IOCTL_GETSTASTATS,
 597 #endif /* MADWIFI_NG */
 598                          &stats, sizeof(stats))) {
 599                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 600                            MACSTR ")", __func__, MAC2STR(addr));
 601                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 602                         memcpy(data, &drv->acct_data, sizeof(*data));
 603                         return 0;
 604                 }
 605
 606                 printf("Failed to get station stats information element.\n");
 607                 return -1;
 608         }
 609
 610         data->rx_packets = stats.is_stats.ns_rx_data;
 611         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 612         data->tx_packets = stats.is_stats.ns_tx_data;
 613         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 614         return 0;
 615
 616 #else /* MADWIFI_BSD */
 617
 618         char buf[1024], line[128], *pos;
 619         FILE *f;
 620         unsigned long val;
 621
 622         memset(data, 0, sizeof(*data));
 623         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 624                  drv->iface, MAC2STR(addr));
 625
 626         f = fopen(buf, "r");
 627         if (!f) {
 628                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 629                         return -1;
 630                 memcpy(data, &drv->acct_data, sizeof(*data));
 631                 return 0;
 632         }
 633         /* Need to read proc file with in one piece, so use large enough
 634          * buffer. */
 635         setbuffer(f, buf, sizeof(buf));
 636
 637         while (fgets(line, sizeof(line), f)) {
 638                 pos = strchr(line, '=');
 639                 if (!pos)
 640                         continue;
 641                 *pos++ = '\0';
 642                 val = strtoul(pos, NULL, 10);
 643                 if (strcmp(line, "rx_packets") == 0)
 644                         data->rx_packets = val;
 645                 else if (strcmp(line, "tx_packets") == 0)
 646                         data->tx_packets = val;
 647                 else if (strcmp(line, "rx_bytes") == 0)
 648                         data->rx_bytes = val;
 649                 else if (strcmp(line, "tx_bytes") == 0)
 650                         data->tx_bytes = val;
 651         }
 652
 653         fclose(f);
 654
 655         return 0;
 656 #endif /* MADWIFI_BSD */
 657 }
 658
 659
 660 static int
 661 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 662 {
 663 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 664         struct madwifi_driver_data *drv = priv;
 665         struct ieee80211req_mlme mlme;
 666         int ret;
 667
 668         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 669
 670         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 671         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 672         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 673                            sizeof(mlme));
 674         if (ret < 0) {
 675                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 676                            MACSTR ")", __func__, MAC2STR(addr));
 677         }
 678
 679         return ret;
 680 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 681         return 0; /* FIX */
 682 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 683 }
 684
 685
 686 static int
 687 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 688 {
 689         /*
 690          * Do nothing; we setup parameters at startup that define the
 691          * contents of the beacon information element.
 692          */
 693         return 0;
 694 }
 695
 696 static int
 697 madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code)
 698 {
 699         struct madwifi_driver_data *drv = priv;
 700         struct ieee80211req_mlme mlme;
 701         int ret;
 702
 703         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 704                    __func__, ether_sprintf(addr), reason_code);
 705
 706         mlme.im_op = IEEE80211_MLME_DEAUTH;
 707         mlme.im_reason = reason_code;
 708         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 709         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 710         if (ret < 0) {
 711                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 712                            " reason %d)",
 713                            __func__, MAC2STR(addr), reason_code);
 714         }
 715
 716         return ret;
 717 }
 718
 719 static int
 720 madwifi_sta_disassoc(void *priv, const u8 *addr, int reason_code)
 721 {
 722         struct madwifi_driver_data *drv = priv;
 723         struct ieee80211req_mlme mlme;
 724         int ret;
 725
 726         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 727                    __func__, ether_sprintf(addr), reason_code);
 728
 729         mlme.im_op = IEEE80211_MLME_DISASSOC;
 730         mlme.im_reason = reason_code;
 731         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 732         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 733         if (ret < 0) {
 734                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 735                            MACSTR " reason %d)",
 736                            __func__, MAC2STR(addr), reason_code);
 737         }
 738
 739         return ret;
 740 }
 741
 742 #ifdef CONFIG_WPS
 743 #ifdef IEEE80211_IOCTL_FILTERFRAME
 744 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 745                                 size_t len)
 746 {
 747         struct madwifi_driver_data *drv = ctx;
 748         const struct ieee80211_mgmt *mgmt;
 749         const u8 *end, *ie;
 750         u16 fc;
 751         size_t ie_len;
 752
 753         /* Send Probe Request information to WPS processing */
 754
 755         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 756                 return;
 757         mgmt = (const struct ieee80211_mgmt *) buf;
 758
 759         fc = le_to_host16(mgmt->frame_control);
 760         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 761             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 762                 return;
 763
 764         end = buf + len;
 765         ie = mgmt->u.probe_req.variable;
 766         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 767
 768         hostapd_wps_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
 769 }
 770 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 771 #endif /* CONFIG_WPS */
 772
 773 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 774 {
 775         int ret = 0;
 776 #ifdef CONFIG_WPS
 777 #ifdef IEEE80211_IOCTL_FILTERFRAME
 778         struct ieee80211req_set_filter filt;
 779
 780         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 781         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 782
 783         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 784                            sizeof(struct ieee80211req_set_filter));
 785         if (ret)
 786                 return ret;
 787
 788         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 789                                        madwifi_raw_receive, drv, 1);
 790         if (drv->sock_raw == NULL)
 791                 return -1;
 792 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 793 #endif /* CONFIG_WPS */
 794         return ret;
 795 }
 796
 797 #ifdef CONFIG_WPS
 798 static int
 799 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 800 {
 801         struct madwifi_driver_data *drv = priv;
 802         u8 buf[256];
 803         struct ieee80211req_getset_appiebuf *beac_ie;
 804
 805         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 806                    (unsigned long) len);
 807
 808         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 809         beac_ie->app_frmtype = frametype;
 810         beac_ie->app_buflen = len;
 811         memcpy(&(beac_ie->app_buf[0]), ie, len);
 812
 813         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 814                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 815 }
 816
 817 static int
 818 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
 819                           size_t len)
 820 {
 821         return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
 822 }
 823
 824 static int
 825 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
 826                               size_t len)
 827 {
 828         return madwifi_set_wps_ie(priv, ie, len,
 829                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 830 }
 831 #else /* CONFIG_WPS */
 832 #define madwifi_set_wps_beacon_ie NULL
 833 #define madwifi_set_wps_probe_resp_ie NULL
 834 #endif /* CONFIG_WPS */
 835
 836 static int
 837 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 838 {
 839         struct hostapd_data *hapd = drv->hapd;
 840         struct ieee80211req_wpaie ie;
 841         int ielen = 0, res;
 842         u8 *iebuf = NULL;
 843
 844         /*
 845          * Fetch negotiated WPA/RSN parameters from the system.
 846          */
 847         memset(&ie, 0, sizeof(ie));
 848         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 849         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 850                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
 851                            __func__);
 852                 goto no_ie;
 853         }
 854         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 855                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 856         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 857                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 858         iebuf = ie.wpa_ie;
 859         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 860          * Assume the IE was not included if the IE type is unknown. */
 861         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 862                 iebuf[1] = 0;
 863 #ifdef MADWIFI_NG
 864         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 865                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 866                  * set. This is needed for WPA2. */
 867                 iebuf = ie.rsn_ie;
 868                 if (iebuf[0] != WLAN_EID_RSN)
 869                         iebuf[1] = 0;
 870         }
 871 #endif /* MADWIFI_NG */
 872
 873         ielen = iebuf[1];
 874         if (ielen == 0)
 875                 iebuf = NULL;
 876         else
 877                 ielen += 2;
 878
 879 no_ie:
 880         res = hostapd_notif_assoc(hapd, addr, iebuf, ielen);
 881
 882         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 883                 /* Cached accounting data is not valid anymore. */
 884                 memset(drv->acct_mac, 0, ETH_ALEN);
 885                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 886         }
 887
 888         return res;
 889 }
 890
 891 static void
 892 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 893                                        char *custom)
 894 {
 895         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 896
 897         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 898                 char *pos;
 899                 u8 addr[ETH_ALEN];
 900                 pos = strstr(custom, "addr=");
 901                 if (pos == NULL) {
 902                         wpa_printf(MSG_DEBUG,
 903                                    "MLME-MICHAELMICFAILURE.indication "
 904                                    "without sender address ignored");
 905                         return;
 906                 }
 907                 pos += 5;
 908                 if (hwaddr_aton(pos, addr) == 0) {
 909                         hostapd_michael_mic_failure(drv->hapd, addr);
 910                 } else {
 911                         wpa_printf(MSG_DEBUG,
 912                                    "MLME-MICHAELMICFAILURE.indication "
 913                                    "with invalid MAC address");
 914                 }
 915         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 916                 char *key, *value;
 917                 u32 val;
 918                 key = custom;
 919                 while ((key = strchr(key, '\n')) != NULL) {
 920                         key++;
 921                         value = strchr(key, '=');
 922                         if (value == NULL)
 923                                 continue;
 924                         *value++ = '\0';
 925                         val = strtoul(value, NULL, 10);
 926                         if (strcmp(key, "mac") == 0)
 927                                 hwaddr_aton(value, drv->acct_mac);
 928                         else if (strcmp(key, "rx_packets") == 0)
 929                                 drv->acct_data.rx_packets = val;
 930                         else if (strcmp(key, "tx_packets") == 0)
 931                                 drv->acct_data.tx_packets = val;
 932                         else if (strcmp(key, "rx_bytes") == 0)
 933                                 drv->acct_data.rx_bytes = val;
 934                         else if (strcmp(key, "tx_bytes") == 0)
 935                                 drv->acct_data.tx_bytes = val;
 936                         key = value;
 937                 }
 938         }
 939 }
 940
 941 static void
 942 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 943                                             char *data, int len)
 944 {
 945         struct iw_event iwe_buf, *iwe = &iwe_buf;
 946         char *pos, *end, *custom, *buf;
 947
 948         pos = data;
 949         end = data + len;
 950
 951         while (pos + IW_EV_LCP_LEN <= end) {
 952                 /* Event data may be unaligned, so make a local, aligned copy
 953                  * before processing. */
 954                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 955                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 956                            iwe->cmd, iwe->len);
 957                 if (iwe->len <= IW_EV_LCP_LEN)
 958                         return;
 959
 960                 custom = pos + IW_EV_POINT_LEN;
 961                 if (drv->we_version > 18 &&
 962                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 963                      iwe->cmd == IWEVCUSTOM)) {
 964                         /* WE-19 removed the pointer from struct iw_point */
 965                         char *dpos = (char *) &iwe_buf.u.data.length;
 966                         int dlen = dpos - (char *) &iwe_buf;
 967                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 968                                sizeof(struct iw_event) - dlen);
 969                 } else {
 970                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 971                         custom += IW_EV_POINT_OFF;
 972                 }
 973
 974                 switch (iwe->cmd) {
 975                 case IWEVEXPIRED:
 976                         hostapd_notif_disassoc(drv->hapd,
 977                                                (u8 *) iwe->u.addr.sa_data);
 978                         break;
 979                 case IWEVREGISTERED:
 980                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 981                         break;
 982                 case IWEVCUSTOM:
 983                         if (custom + iwe->u.data.length > end)
 984                                 return;
 985                         buf = malloc(iwe->u.data.length + 1);
 986                         if (buf == NULL)
 987                                 return;         /* XXX */
 988                         memcpy(buf, custom, iwe->u.data.length);
 989                         buf[iwe->u.data.length] = '\0';
 990                         madwifi_wireless_event_wireless_custom(drv, buf);
 991                         free(buf);
 992                         break;
 993                 }
 994
 995                 pos += iwe->len;
 996         }
 997 }
 998
 999
1000 static void
1001 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
1002                                                struct nlmsghdr *h, int len)
1003 {
1004         struct ifinfomsg *ifi;
1005         int attrlen, nlmsg_len, rta_len;
1006         struct rtattr * attr;
1007
1008         if (len < (int) sizeof(*ifi))
1009                 return;
1010
1011         ifi = NLMSG_DATA(h);
1012
1013         if (ifi->ifi_index != drv->ifindex)
1014                 return;
1015
1016         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
1017
1018         attrlen = h->nlmsg_len - nlmsg_len;
1019         if (attrlen < 0)
1020                 return;
1021
1022         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
1023
1024         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1025         while (RTA_OK(attr, attrlen)) {
1026                 if (attr->rta_type == IFLA_WIRELESS) {
1027                         madwifi_wireless_event_wireless(
1028                                 drv, ((char *) attr) + rta_len,
1029                                 attr->rta_len - rta_len);
1030                 }
1031                 attr = RTA_NEXT(attr, attrlen);
1032         }
1033 }
1034
1035
1036 static void
1037 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
1038 {
1039         char buf[256];
1040         int left;
1041         struct sockaddr_nl from;
1042         socklen_t fromlen;
1043         struct nlmsghdr *h;
1044         struct madwifi_driver_data *drv = eloop_ctx;
1045
1046         fromlen = sizeof(from);
1047         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1048                         (struct sockaddr *) &from, &fromlen);
1049         if (left < 0) {
1050                 if (errno != EINTR && errno != EAGAIN)
1051                         perror("recvfrom(netlink)");
1052                 return;
1053         }
1054
1055         h = (struct nlmsghdr *) buf;
1056         while (left >= (int) sizeof(*h)) {
1057                 int len, plen;
1058
1059                 len = h->nlmsg_len;
1060                 plen = len - sizeof(*h);
1061                 if (len > left || plen < 0) {
1062                         printf("Malformed netlink message: "
1063                                "len=%d left=%d plen=%d\n",
1064                                len, left, plen);
1065                         break;
1066                 }
1067
1068                 switch (h->nlmsg_type) {
1069                 case RTM_NEWLINK:
1070                         madwifi_wireless_event_rtm_newlink(drv, h, plen);
1071                         break;
1072                 }
1073
1074                 len = NLMSG_ALIGN(len);
1075                 left -= len;
1076                 h = (struct nlmsghdr *) ((char *) h + len);
1077         }
1078
1079         if (left > 0) {
1080                 printf("%d extra bytes in the end of netlink message\n", left);
1081         }
1082 }
1083
1084
1085 static int
1086 madwifi_get_we_version(struct madwifi_driver_data *drv)
1087 {
1088         struct iw_range *range;
1089         struct iwreq iwr;
1090         int minlen;
1091         size_t buflen;
1092
1093         drv->we_version = 0;
1094
1095         /*
1096          * Use larger buffer than struct iw_range in order to allow the
1097          * structure to grow in the future.
1098          */
1099         buflen = sizeof(struct iw_range) + 500;
1100         range = os_zalloc(buflen);
1101         if (range == NULL)
1102                 return -1;
1103
1104         memset(&iwr, 0, sizeof(iwr));
1105         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1106         iwr.u.data.pointer = (caddr_t) range;
1107         iwr.u.data.length = buflen;
1108
1109         minlen = ((char *) &range->enc_capa) - (char *) range +
1110                 sizeof(range->enc_capa);
1111
1112         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1113                 perror("ioctl[SIOCGIWRANGE]");
1114                 free(range);
1115                 return -1;
1116         } else if (iwr.u.data.length >= minlen &&
1117                    range->we_version_compiled >= 18) {
1118                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1119                            "WE(source)=%d enc_capa=0x%x",
1120                            range->we_version_compiled,
1121                            range->we_version_source,
1122                            range->enc_capa);
1123                 drv->we_version = range->we_version_compiled;
1124         }
1125
1126         free(range);
1127         return 0;
1128 }
1129
1130
1131 static int
1132 madwifi_wireless_event_init(void *priv)
1133 {
1134         struct madwifi_driver_data *drv = priv;
1135         int s;
1136         struct sockaddr_nl local;
1137
1138         madwifi_get_we_version(drv);
1139
1140         drv->wext_sock = -1;
1141
1142         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1143         if (s < 0) {
1144                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1145                 return -1;
1146         }
1147
1148         memset(&local, 0, sizeof(local));
1149         local.nl_family = AF_NETLINK;
1150         local.nl_groups = RTMGRP_LINK;
1151         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1152                 perror("bind(netlink)");
1153                 close(s);
1154                 return -1;
1155         }
1156
1157         eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1158         drv->wext_sock = s;
1159
1160         return 0;
1161 }
1162
1163
1164 static void
1165 madwifi_wireless_event_deinit(void *priv)
1166 {
1167         struct madwifi_driver_data *drv = priv;
1168
1169         if (drv != NULL) {
1170                 if (drv->wext_sock < 0)
1171                         return;
1172                 eloop_unregister_read_sock(drv->wext_sock);
1173                 close(drv->wext_sock);
1174         }
1175 }
1176
1177
1178 static int
1179 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1180                    int encrypt, const u8 *own_addr)
1181 {
1182         struct madwifi_driver_data *drv = priv;
1183         unsigned char buf[3000];
1184         unsigned char *bp = buf;
1185         struct l2_ethhdr *eth;
1186         size_t len;
1187         int status;
1188
1189         /*
1190          * Prepend the Ethernet header.  If the caller left us
1191          * space at the front we could just insert it but since
1192          * we don't know we copy to a local buffer.  Given the frequency
1193          * and size of frames this probably doesn't matter.
1194          */
1195         len = data_len + sizeof(struct l2_ethhdr);
1196         if (len > sizeof(buf)) {
1197                 bp = malloc(len);
1198                 if (bp == NULL) {
1199                         printf("EAPOL frame discarded, cannot malloc temp "
1200                                "buffer of size %lu!\n", (unsigned long) len);
1201                         return -1;
1202                 }
1203         }
1204         eth = (struct l2_ethhdr *) bp;
1205         memcpy(eth->h_dest, addr, ETH_ALEN);
1206         memcpy(eth->h_source, own_addr, ETH_ALEN);
1207         eth->h_proto = host_to_be16(ETH_P_EAPOL);
1208         memcpy(eth+1, data, data_len);
1209
1210         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1211
1212         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1213
1214         if (bp != buf)
1215                 free(bp);
1216         return status;
1217 }
1218
1219 static void
1220 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1221 {
1222         struct madwifi_driver_data *drv = ctx;
1223         hostapd_eapol_receive(drv->hapd, src_addr,
1224                               buf + sizeof(struct l2_ethhdr),
1225                               len - sizeof(struct l2_ethhdr));
1226 }
1227
1228 static void *
1229 madwifi_init(struct hostapd_data *hapd)
1230 {
1231         struct madwifi_driver_data *drv;
1232         struct ifreq ifr;
1233         struct iwreq iwr;
1234
1235         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1236         if (drv == NULL) {
1237                 printf("Could not allocate memory for madwifi driver data\n");
1238                 return NULL;
1239         }
1240
1241         drv->hapd = hapd;
1242         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1243         if (drv->ioctl_sock < 0) {
1244                 perror("socket[PF_INET,SOCK_DGRAM]");
1245                 goto bad;
1246         }
1247         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
1248
1249         memset(&ifr, 0, sizeof(ifr));
1250         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1251         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1252                 perror("ioctl(SIOCGIFINDEX)");
1253                 goto bad;
1254         }
1255         drv->ifindex = ifr.ifr_ifindex;
1256
1257         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1258                                         handle_read, drv, 1);
1259         if (drv->sock_xmit == NULL)
1260                 goto bad;
1261         if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
1262                 goto bad;
1263         if (hapd->conf->bridge[0] != '\0') {
1264                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1265                            hapd->conf->bridge);
1266                 drv->sock_recv = l2_packet_init(hapd->conf->bridge, NULL,
1267                                                 ETH_P_EAPOL, handle_read, drv,
1268                                                 1);
1269                 if (drv->sock_recv == NULL)
1270                         goto bad;
1271         } else
1272                 drv->sock_recv = drv->sock_xmit;
1273
1274         memset(&iwr, 0, sizeof(iwr));
1275         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1276
1277         iwr.u.mode = IW_MODE_MASTER;
1278
1279         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1280                 perror("ioctl[SIOCSIWMODE]");
1281                 printf("Could not set interface to master mode!\n");
1282                 goto bad;
1283         }
1284
1285         madwifi_set_iface_flags(drv, 0);        /* mark down during setup */
1286         madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1287
1288         madwifi_receive_probe_req(drv);
1289
1290         return drv;
1291 bad:
1292         if (drv->sock_xmit != NULL)
1293                 l2_packet_deinit(drv->sock_xmit);
1294         if (drv->ioctl_sock >= 0)
1295                 close(drv->ioctl_sock);
1296         if (drv != NULL)
1297                 free(drv);
1298         return NULL;
1299 }
1300
1301
1302 static void
1303 madwifi_deinit(void *priv)
1304 {
1305         struct madwifi_driver_data *drv = priv;
1306
1307         (void) madwifi_set_iface_flags(drv, 0);
1308         if (drv->ioctl_sock >= 0)
1309                 close(drv->ioctl_sock);
1310         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1311                 l2_packet_deinit(drv->sock_recv);
1312         if (drv->sock_xmit != NULL)
1313                 l2_packet_deinit(drv->sock_xmit);
1314         if (drv->sock_raw)
1315                 l2_packet_deinit(drv->sock_raw);
1316         free(drv);
1317 }
1318
1319 static int
1320 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1321 {
1322         struct madwifi_driver_data *drv = priv;
1323         struct iwreq iwr;
1324
1325         memset(&iwr, 0, sizeof(iwr));
1326         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1327         iwr.u.essid.flags = 1; /* SSID active */
1328         iwr.u.essid.pointer = (caddr_t) buf;
1329         iwr.u.essid.length = len + 1;
1330
1331         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1332                 perror("ioctl[SIOCSIWESSID]");
1333                 printf("len=%d\n", len);
1334                 return -1;
1335         }
1336         return 0;
1337 }
1338
1339 static int
1340 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1341 {
1342         struct madwifi_driver_data *drv = priv;
1343         struct iwreq iwr;
1344         int ret = 0;
1345
1346         memset(&iwr, 0, sizeof(iwr));
1347         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1348         iwr.u.essid.pointer = (caddr_t) buf;
1349         iwr.u.essid.length = len;
1350
1351         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1352                 perror("ioctl[SIOCGIWESSID]");
1353                 ret = -1;
1354         } else
1355                 ret = iwr.u.essid.length;
1356
1357         return ret;
1358 }
1359
1360 static int
1361 madwifi_set_countermeasures(void *priv, int enabled)
1362 {
1363         struct madwifi_driver_data *drv = priv;
1364         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1365         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1366 }
1367
1368 static int
1369 madwifi_commit(void *priv)
1370 {
1371         return madwifi_set_iface_flags(priv, 1);
1372 }
1373
1374 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1375         .name                   = "madwifi",
1376         .init                   = madwifi_init,
1377         .deinit                 = madwifi_deinit,
1378         .set_ieee8021x          = madwifi_set_ieee8021x,
1379         .set_privacy            = madwifi_set_privacy,
1380         .set_encryption         = madwifi_set_key,
1381         .get_seqnum             = madwifi_get_seqnum,
1382         .flush                  = madwifi_flush,
1383         .set_generic_elem       = madwifi_set_opt_ie,
1384         .wireless_event_init    = madwifi_wireless_event_init,
1385         .wireless_event_deinit  = madwifi_wireless_event_deinit,
1386         .sta_set_flags          = madwifi_sta_set_flags,
1387         .read_sta_data          = madwifi_read_sta_driver_data,
1388         .send_eapol             = madwifi_send_eapol,
1389         .sta_disassoc           = madwifi_sta_disassoc,
1390         .sta_deauth             = madwifi_sta_deauth,
1391         .set_ssid               = madwifi_set_ssid,
1392         .get_ssid               = madwifi_get_ssid,
1393         .set_countermeasures    = madwifi_set_countermeasures,
1394         .sta_clear_stats        = madwifi_sta_clear_stats,
1395         .commit                 = madwifi_commit,
1396         .set_wps_beacon_ie      = madwifi_set_wps_beacon_ie,
1397         .set_wps_probe_resp_ie  = madwifi_set_wps_probe_resp_ie,
1398 };