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