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