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 /*
  32  * Avoid conflicts with hostapd definitions by undefining couple of defines
  33  * from madwifi header files.
  34  */
  35 #undef RSN_VERSION
  36 #undef WPA_VERSION
  37 #undef WPA_OUI_TYPE
  38 #undef WME_OUI_TYPE
  39
  40
  41 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  42 /* Assume this is built against madwifi-ng */
  43 #define MADWIFI_NG
  44 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  45
  46 #include "wireless_copy.h"
  47
  48 #include "hostapd.h"
  49 #include "driver.h"
  50 #include "ieee802_1x.h"
  51 #include "eloop.h"
  52 #include "priv_netlink.h"
  53 #include "sta_info.h"
  54 #include "l2_packet/l2_packet.h"
  55
  56 #include "wpa.h"
  57 #include "radius/radius.h"
  58 #include "ieee802_11.h"
  59 #include "accounting.h"
  60 #include "common.h"
  61
  62
  63 struct madwifi_driver_data {
  64         struct hostapd_data *hapd;              /* back pointer */
  65
  66         char    iface[IFNAMSIZ + 1];
  67         int     ifindex;
  68         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  69         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  70         int     ioctl_sock;                     /* socket for ioctl() use */
  71         int     wext_sock;                      /* socket for wireless events */
  72         int     we_version;
  73         u8      acct_mac[ETH_ALEN];
  74         struct hostap_sta_driver_data acct_data;
  75
  76         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  77 };
  78
  79 static int madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code);
  80
  81 static int
  82 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
  83 {
  84         struct iwreq iwr;
  85         int do_inline = len < IFNAMSIZ;
  86
  87         memset(&iwr, 0, sizeof(iwr));
  88         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
  89 #ifdef IEEE80211_IOCTL_FILTERFRAME
  90         /* FILTERFRAME must be NOT inline, regardless of size. */
  91         if (op == IEEE80211_IOCTL_FILTERFRAME)
  92                 do_inline = 0;
  93 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  94         if (do_inline) {
  95                 /*
  96                  * Argument data fits inline; put it there.
  97                  */
  98                 memcpy(iwr.u.name, data, len);
  99         } else {
 100                 /*
 101                  * Argument data too big for inline transfer; setup a
 102                  * parameter block instead; the kernel will transfer
 103                  * the data for the driver.
 104                  */
 105                 iwr.u.data.pointer = data;
 106                 iwr.u.data.length = len;
 107         }
 108
 109         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 110 #ifdef MADWIFI_NG
 111                 int first = IEEE80211_IOCTL_SETPARAM;
 112                 static const char *opnames[] = {
 113                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 114                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 115                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 116                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 117                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 118                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 119                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 120                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 121                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 122                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 123                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 124                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 125                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 126                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 127                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 128                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 129                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 130                         NULL,
 131                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 132                         NULL,
 133                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 134                         NULL,
 135                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 136                         NULL,
 137                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 138                         NULL,
 139                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 140                         NULL,
 141                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 142                         NULL,
 143                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 144                 };
 145 #else /* MADWIFI_NG */
 146                 int first = IEEE80211_IOCTL_SETPARAM;
 147                 static const char *opnames[] = {
 148                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 149                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 150                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 151                         "ioctl[SIOCIWFIRSTPRIV+3]",
 152                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 153                         "ioctl[SIOCIWFIRSTPRIV+5]",
 154                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 155                         "ioctl[SIOCIWFIRSTPRIV+7]",
 156                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 157                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 158                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 159                         "ioctl[SIOCIWFIRSTPRIV+11]",
 160                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 161                         "ioctl[SIOCIWFIRSTPRIV+13]",
 162                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 163                         "ioctl[SIOCIWFIRSTPRIV+15]",
 164                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 165                         "ioctl[SIOCIWFIRSTPRIV+17]",
 166                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 167                 };
 168 #endif /* MADWIFI_NG */
 169                 int idx = op - first;
 170                 if (first <= op &&
 171                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 172                     opnames[idx])
 173                         perror(opnames[idx]);
 174                 else
 175                         perror("ioctl[unknown???]");
 176                 return -1;
 177         }
 178         return 0;
 179 }
 180
 181 static int
 182 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 183 {
 184         struct iwreq iwr;
 185
 186         memset(&iwr, 0, sizeof(iwr));
 187         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 188         iwr.u.mode = op;
 189         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 190
 191         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 192                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 193                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 194                            "arg %d)", __func__, op, arg);
 195                 return -1;
 196         }
 197         return 0;
 198 }
 199
 200 static const char *
 201 ether_sprintf(const u8 *addr)
 202 {
 203         static char buf[sizeof(MACSTR)];
 204
 205         if (addr != NULL)
 206                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 207         else
 208                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 209         return buf;
 210 }
 211
 212 /*
 213  * Configure WPA parameters.
 214  */
 215 static int
 216 madwifi_configure_wpa(struct madwifi_driver_data *drv)
 217 {
 218         struct hostapd_data *hapd = drv->hapd;
 219         struct hostapd_bss_config *conf = hapd->conf;
 220         int v;
 221
 222         switch (conf->wpa_group) {
 223         case WPA_CIPHER_CCMP:
 224                 v = IEEE80211_CIPHER_AES_CCM;
 225                 break;
 226         case WPA_CIPHER_TKIP:
 227                 v = IEEE80211_CIPHER_TKIP;
 228                 break;
 229         case WPA_CIPHER_WEP104:
 230                 v = IEEE80211_CIPHER_WEP;
 231                 break;
 232         case WPA_CIPHER_WEP40:
 233                 v = IEEE80211_CIPHER_WEP;
 234                 break;
 235         case WPA_CIPHER_NONE:
 236                 v = IEEE80211_CIPHER_NONE;
 237                 break;
 238         default:
 239                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 240                            conf->wpa_group);
 241                 return -1;
 242         }
 243         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 244         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 245                 printf("Unable to set group key cipher to %u\n", v);
 246                 return -1;
 247         }
 248         if (v == IEEE80211_CIPHER_WEP) {
 249                 /* key length is done only for specific ciphers */
 250                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 251                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 252                         printf("Unable to set group key length to %u\n", v);
 253                         return -1;
 254                 }
 255         }
 256
 257         v = 0;
 258         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 259                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 260         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 261                 v |= 1<<IEEE80211_CIPHER_TKIP;
 262         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 263                 v |= 1<<IEEE80211_CIPHER_NONE;
 264         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 265         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 266                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 267                 return -1;
 268         }
 269
 270         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 271                    __func__, conf->wpa_key_mgmt);
 272         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
 273                 printf("Unable to set key management algorithms to 0x%x\n",
 274                         conf->wpa_key_mgmt);
 275                 return -1;
 276         }
 277
 278         v = 0;
 279         if (conf->rsn_preauth)
 280                 v |= BIT(0);
 281         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 282                    __func__, conf->rsn_preauth);
 283         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 284                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 285                 return -1;
 286         }
 287
 288         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
 289         if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
 290                 printf("Unable to set WPA to %u\n", conf->wpa);
 291                 return -1;
 292         }
 293         return 0;
 294 }
 295
 296
 297 static int
 298 madwifi_set_iface_flags(void *priv, int dev_up)
 299 {
 300         struct madwifi_driver_data *drv = priv;
 301         struct ifreq ifr;
 302
 303         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 304
 305         if (drv->ioctl_sock < 0)
 306                 return -1;
 307
 308         memset(&ifr, 0, sizeof(ifr));
 309         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 310
 311         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 312                 perror("ioctl[SIOCGIFFLAGS]");
 313                 return -1;
 314         }
 315
 316         if (dev_up)
 317                 ifr.ifr_flags |= IFF_UP;
 318         else
 319                 ifr.ifr_flags &= ~IFF_UP;
 320
 321         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 322                 perror("ioctl[SIOCSIFFLAGS]");
 323                 return -1;
 324         }
 325
 326         if (dev_up) {
 327                 memset(&ifr, 0, sizeof(ifr));
 328                 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 329                 ifr.ifr_mtu = HOSTAPD_MTU;
 330                 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
 331                         perror("ioctl[SIOCSIFMTU]");
 332                         printf("Setting MTU failed - trying to survive with "
 333                                "current value\n");
 334                 }
 335         }
 336
 337         return 0;
 338 }
 339
 340 static int
 341 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
 342 {
 343         struct madwifi_driver_data *drv = priv;
 344         struct hostapd_data *hapd = drv->hapd;
 345         struct hostapd_bss_config *conf = hapd->conf;
 346
 347         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 348
 349         if (!enabled) {
 350                 /* XXX restore state */
 351                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 352                         IEEE80211_AUTH_AUTO);
 353         }
 354         if (!conf->wpa && !conf->ieee802_1x) {
 355                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 356                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 357                 return -1;
 358         }
 359         if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
 360                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 361                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 362                 return -1;
 363         }
 364         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 365                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 366                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 367                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 368                 return -1;
 369         }
 370
 371         return 0;
 372 }
 373
 374 static int
 375 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 376 {
 377         struct madwifi_driver_data *drv = priv;
 378
 379         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 380
 381         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 382 }
 383
 384 static int
 385 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 386 {
 387         struct madwifi_driver_data *drv = priv;
 388         struct ieee80211req_mlme mlme;
 389         int ret;
 390
 391         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 392                    __func__, ether_sprintf(addr), authorized);
 393
 394         if (authorized)
 395                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 396         else
 397                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 398         mlme.im_reason = 0;
 399         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 400         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 401         if (ret < 0) {
 402                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 403                            __func__, authorized ? "" : "un", MAC2STR(addr));
 404         }
 405
 406         return ret;
 407 }
 408
 409 static int
 410 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 411                       int flags_or, int flags_and)
 412 {
 413         /* For now, only support setting Authorized flag */
 414         if (flags_or & WLAN_STA_AUTHORIZED)
 415                 return madwifi_set_sta_authorized(priv, addr, 1);
 416         if (!(flags_and & WLAN_STA_AUTHORIZED))
 417                 return madwifi_set_sta_authorized(priv, addr, 0);
 418         return 0;
 419 }
 420
 421 static int
 422 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 423 {
 424         struct madwifi_driver_data *drv = priv;
 425         struct ieee80211req_del_key wk;
 426         int ret;
 427
 428         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 429                    __func__, ether_sprintf(addr), key_idx);
 430
 431         memset(&wk, 0, sizeof(wk));
 432         if (addr != NULL) {
 433                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 434                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 435         } else {
 436                 wk.idk_keyix = key_idx;
 437         }
 438
 439         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 440         if (ret < 0) {
 441                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 442                            " key_idx %d)", __func__, ether_sprintf(addr),
 443                            key_idx);
 444         }
 445
 446         return ret;
 447 }
 448
 449 static int
 450 madwifi_set_key(const char *ifname, void *priv, const char *alg,
 451                 const u8 *addr, int key_idx,
 452                 const u8 *key, size_t key_len, int txkey)
 453 {
 454         struct madwifi_driver_data *drv = priv;
 455         struct ieee80211req_key wk;
 456         u_int8_t cipher;
 457         int ret;
 458
 459         if (strcmp(alg, "none") == 0)
 460                 return madwifi_del_key(drv, addr, key_idx);
 461
 462         wpa_printf(MSG_DEBUG, "%s: alg=%s addr=%s key_idx=%d",
 463                    __func__, alg, ether_sprintf(addr), key_idx);
 464
 465         if (strcmp(alg, "WEP") == 0)
 466                 cipher = IEEE80211_CIPHER_WEP;
 467         else if (strcmp(alg, "TKIP") == 0)
 468                 cipher = IEEE80211_CIPHER_TKIP;
 469         else if (strcmp(alg, "CCMP") == 0)
 470                 cipher = IEEE80211_CIPHER_AES_CCM;
 471         else {
 472                 printf("%s: unknown/unsupported algorithm %s\n",
 473                         __func__, alg);
 474                 return -1;
 475         }
 476
 477         if (key_len > sizeof(wk.ik_keydata)) {
 478                 printf("%s: key length %lu too big\n", __func__,
 479                        (unsigned long) key_len);
 480                 return -3;
 481         }
 482
 483         memset(&wk, 0, sizeof(wk));
 484         wk.ik_type = cipher;
 485         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 486         if (addr == NULL) {
 487                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 488                 wk.ik_keyix = key_idx;
 489                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 490         } else {
 491                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 492                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 493         }
 494         wk.ik_keylen = key_len;
 495         memcpy(wk.ik_keydata, key, key_len);
 496
 497         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 498         if (ret < 0) {
 499                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 500                            " key_idx %d alg '%s' key_len %lu txkey %d)",
 501                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 502                            alg, (unsigned long) key_len, txkey);
 503         }
 504
 505         return ret;
 506 }
 507
 508
 509 static int
 510 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 511                    u8 *seq)
 512 {
 513         struct madwifi_driver_data *drv = priv;
 514         struct ieee80211req_key wk;
 515
 516         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 517                    __func__, ether_sprintf(addr), idx);
 518
 519         memset(&wk, 0, sizeof(wk));
 520         if (addr == NULL)
 521                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 522         else
 523                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 524         wk.ik_keyix = idx;
 525
 526         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 527                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 528                            "(addr " MACSTR " key_idx %d)",
 529                            __func__, MAC2STR(wk.ik_macaddr), idx);
 530                 return -1;
 531         }
 532
 533 #ifdef WORDS_BIGENDIAN
 534         {
 535                 /*
 536                  * wk.ik_keytsc is in host byte order (big endian), need to
 537                  * swap it to match with the byte order used in WPA.
 538                  */
 539                 int i;
 540                 u8 tmp[WPA_KEY_RSC_LEN];
 541                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 542                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 543                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 544                 }
 545         }
 546 #else /* WORDS_BIGENDIAN */
 547         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 548 #endif /* WORDS_BIGENDIAN */
 549         return 0;
 550 }
 551
 552
 553 static int
 554 madwifi_flush(void *priv)
 555 {
 556 #ifdef MADWIFI_BSD
 557         u8 allsta[IEEE80211_ADDR_LEN];
 558         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 559         return madwifi_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
 560 #else /* MADWIFI_BSD */
 561         return 0;               /* XXX */
 562 #endif /* MADWIFI_BSD */
 563 }
 564
 565
 566 static int
 567 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 568                              const u8 *addr)
 569 {
 570         struct madwifi_driver_data *drv = priv;
 571
 572 #ifdef MADWIFI_BSD
 573         struct ieee80211req_sta_stats stats;
 574
 575         memset(data, 0, sizeof(*data));
 576
 577         /*
 578          * Fetch statistics for station from the system.
 579          */
 580         memset(&stats, 0, sizeof(stats));
 581         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 582         if (set80211priv(drv,
 583 #ifdef MADWIFI_NG
 584                          IEEE80211_IOCTL_STA_STATS,
 585 #else /* MADWIFI_NG */
 586                          IEEE80211_IOCTL_GETSTASTATS,
 587 #endif /* MADWIFI_NG */
 588                          &stats, sizeof(stats))) {
 589                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 590                            MACSTR ")", __func__, MAC2STR(addr));
 591                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 592                         memcpy(data, &drv->acct_data, sizeof(*data));
 593                         return 0;
 594                 }
 595
 596                 printf("Failed to get station stats information element.\n");
 597                 return -1;
 598         }
 599
 600         data->rx_packets = stats.is_stats.ns_rx_data;
 601         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 602         data->tx_packets = stats.is_stats.ns_tx_data;
 603         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 604         return 0;
 605
 606 #else /* MADWIFI_BSD */
 607
 608         char buf[1024], line[128], *pos;
 609         FILE *f;
 610         unsigned long val;
 611
 612         memset(data, 0, sizeof(*data));
 613         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 614                  drv->iface, MAC2STR(addr));
 615
 616         f = fopen(buf, "r");
 617         if (!f) {
 618                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 619                         return -1;
 620                 memcpy(data, &drv->acct_data, sizeof(*data));
 621                 return 0;
 622         }
 623         /* Need to read proc file with in one piece, so use large enough
 624          * buffer. */
 625         setbuffer(f, buf, sizeof(buf));
 626
 627         while (fgets(line, sizeof(line), f)) {
 628                 pos = strchr(line, '=');
 629                 if (!pos)
 630                         continue;
 631                 *pos++ = '\0';
 632                 val = strtoul(pos, NULL, 10);
 633                 if (strcmp(line, "rx_packets") == 0)
 634                         data->rx_packets = val;
 635                 else if (strcmp(line, "tx_packets") == 0)
 636                         data->tx_packets = val;
 637                 else if (strcmp(line, "rx_bytes") == 0)
 638                         data->rx_bytes = val;
 639                 else if (strcmp(line, "tx_bytes") == 0)
 640                         data->tx_bytes = val;
 641         }
 642
 643         fclose(f);
 644
 645         return 0;
 646 #endif /* MADWIFI_BSD */
 647 }
 648
 649
 650 static int
 651 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 652 {
 653 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 654         struct madwifi_driver_data *drv = priv;
 655         struct ieee80211req_mlme mlme;
 656         int ret;
 657
 658         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 659
 660         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 661         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 662         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 663                            sizeof(mlme));
 664         if (ret < 0) {
 665                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 666                            MACSTR ")", __func__, MAC2STR(addr));
 667         }
 668
 669         return ret;
 670 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 671         return 0; /* FIX */
 672 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 673 }
 674
 675
 676 static int
 677 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 678 {
 679         /*
 680          * Do nothing; we setup parameters at startup that define the
 681          * contents of the beacon information element.
 682          */
 683         return 0;
 684 }
 685
 686 static int
 687 madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code)
 688 {
 689         struct madwifi_driver_data *drv = priv;
 690         struct ieee80211req_mlme mlme;
 691         int ret;
 692
 693         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 694                    __func__, ether_sprintf(addr), reason_code);
 695
 696         mlme.im_op = IEEE80211_MLME_DEAUTH;
 697         mlme.im_reason = reason_code;
 698         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 699         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 700         if (ret < 0) {
 701                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 702                            " reason %d)",
 703                            __func__, MAC2STR(addr), reason_code);
 704         }
 705
 706         return ret;
 707 }
 708
 709 static int
 710 madwifi_sta_disassoc(void *priv, const u8 *addr, int reason_code)
 711 {
 712         struct madwifi_driver_data *drv = priv;
 713         struct ieee80211req_mlme mlme;
 714         int ret;
 715
 716         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 717                    __func__, ether_sprintf(addr), reason_code);
 718
 719         mlme.im_op = IEEE80211_MLME_DISASSOC;
 720         mlme.im_reason = reason_code;
 721         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 722         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 723         if (ret < 0) {
 724                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 725                            MACSTR " reason %d)",
 726                            __func__, MAC2STR(addr), reason_code);
 727         }
 728
 729         return ret;
 730 }
 731
 732 static int
 733 madwifi_del_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 734 {
 735         struct hostapd_data *hapd = drv->hapd;
 736         struct sta_info *sta;
 737
 738         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 739                 HOSTAPD_LEVEL_INFO, "disassociated");
 740
 741         sta = ap_get_sta(hapd, addr);
 742         if (sta != NULL) {
 743                 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 744                 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
 745                 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
 746                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 747                 ap_free_sta(hapd, sta);
 748         }
 749         return 0;
 750 }
 751
 752 static int
 753 madwifi_process_wpa_ie(struct madwifi_driver_data *drv, struct sta_info *sta)
 754 {
 755         struct hostapd_data *hapd = drv->hapd;
 756         struct ieee80211req_wpaie ie;
 757         int ielen, res;
 758         u8 *iebuf;
 759
 760         /*
 761          * Fetch negotiated WPA/RSN parameters from the system.
 762          */
 763         memset(&ie, 0, sizeof(ie));
 764         memcpy(ie.wpa_macaddr, sta->addr, IEEE80211_ADDR_LEN);
 765         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 766                 wpa_printf(MSG_ERROR, "%s: Failed to get WPA/RSN IE",
 767                            __func__);
 768                 printf("Failed to get WPA/RSN information element.\n");
 769                 return -1;              /* XXX not right */
 770         }
 771         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 772                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 773         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 774                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 775         iebuf = ie.wpa_ie;
 776         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 777          * Assume the IE was not included if the IE type is unknown. */
 778         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 779                 iebuf[1] = 0;
 780 #ifdef MADWIFI_NG
 781         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 782                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 783                  * set. This is needed for WPA2. */
 784                 iebuf = ie.rsn_ie;
 785                 if (iebuf[0] != WLAN_EID_RSN)
 786                         iebuf[1] = 0;
 787         }
 788 #endif /* MADWIFI_NG */
 789         ielen = iebuf[1];
 790         if (ielen == 0) {
 791                 printf("No WPA/RSN information element for station!?\n");
 792                 return -1;              /* XXX not right */
 793         }
 794         ielen += 2;
 795         if (sta->wpa_sm == NULL)
 796                 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
 797         if (sta->wpa_sm == NULL) {
 798                 printf("Failed to initialize WPA state machine\n");
 799                 return -1;
 800         }
 801         res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
 802                                   iebuf, ielen, NULL, 0);
 803         if (res != WPA_IE_OK) {
 804                 printf("WPA/RSN information element rejected? (res %u)\n", res);
 805                 return -1;
 806         }
 807         return 0;
 808 }
 809
 810 static int
 811 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 812 {
 813         struct hostapd_data *hapd = drv->hapd;
 814         struct sta_info *sta;
 815         int new_assoc;
 816
 817         hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
 818                 HOSTAPD_LEVEL_INFO, "associated");
 819
 820         sta = ap_get_sta(hapd, addr);
 821         if (sta) {
 822                 accounting_sta_stop(hapd, sta);
 823         } else {
 824                 sta = ap_sta_add(hapd, addr);
 825                 if (sta == NULL)
 826                         return -1;
 827         }
 828
 829         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 830                 /* Cached accounting data is not valid anymore. */
 831                 memset(drv->acct_mac, 0, ETH_ALEN);
 832                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 833         }
 834         accounting_sta_get_id(hapd, sta);
 835
 836         if (hapd->conf->wpa) {
 837                 if (madwifi_process_wpa_ie(drv, sta))
 838                         return -1;
 839         }
 840
 841         /*
 842          * Now that the internal station state is setup
 843          * kick the authenticator into action.
 844          */
 845         new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
 846         sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
 847         wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
 848         hostapd_new_assoc_sta(hapd, sta, !new_assoc);
 849         ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
 850         return 0;
 851 }
 852
 853 static void
 854 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 855                                        char *custom)
 856 {
 857         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 858
 859         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 860                 char *pos;
 861                 u8 addr[ETH_ALEN];
 862                 pos = strstr(custom, "addr=");
 863                 if (pos == NULL) {
 864                         wpa_printf(MSG_DEBUG,
 865                                    "MLME-MICHAELMICFAILURE.indication "
 866                                    "without sender address ignored");
 867                         return;
 868                 }
 869                 pos += 5;
 870                 if (hwaddr_aton(pos, addr) == 0) {
 871                         ieee80211_michael_mic_failure(drv->hapd, addr, 1);
 872                 } else {
 873                         wpa_printf(MSG_DEBUG,
 874                                    "MLME-MICHAELMICFAILURE.indication "
 875                                    "with invalid MAC address");
 876                 }
 877         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 878                 char *key, *value;
 879                 u32 val;
 880                 key = custom;
 881                 while ((key = strchr(key, '\n')) != NULL) {
 882                         key++;
 883                         value = strchr(key, '=');
 884                         if (value == NULL)
 885                                 continue;
 886                         *value++ = '\0';
 887                         val = strtoul(value, NULL, 10);
 888                         if (strcmp(key, "mac") == 0)
 889                                 hwaddr_aton(value, drv->acct_mac);
 890                         else if (strcmp(key, "rx_packets") == 0)
 891                                 drv->acct_data.rx_packets = val;
 892                         else if (strcmp(key, "tx_packets") == 0)
 893                                 drv->acct_data.tx_packets = val;
 894                         else if (strcmp(key, "rx_bytes") == 0)
 895                                 drv->acct_data.rx_bytes = val;
 896                         else if (strcmp(key, "tx_bytes") == 0)
 897                                 drv->acct_data.tx_bytes = val;
 898                         key = value;
 899                 }
 900         }
 901 }
 902
 903 static void
 904 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 905                                             char *data, int len)
 906 {
 907         struct iw_event iwe_buf, *iwe = &iwe_buf;
 908         char *pos, *end, *custom, *buf;
 909
 910         pos = data;
 911         end = data + len;
 912
 913         while (pos + IW_EV_LCP_LEN <= end) {
 914                 /* Event data may be unaligned, so make a local, aligned copy
 915                  * before processing. */
 916                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 917                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 918                            iwe->cmd, iwe->len);
 919                 if (iwe->len <= IW_EV_LCP_LEN)
 920                         return;
 921
 922                 custom = pos + IW_EV_POINT_LEN;
 923                 if (drv->we_version > 18 &&
 924                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 925                      iwe->cmd == IWEVCUSTOM)) {
 926                         /* WE-19 removed the pointer from struct iw_point */
 927                         char *dpos = (char *) &iwe_buf.u.data.length;
 928                         int dlen = dpos - (char *) &iwe_buf;
 929                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 930                                sizeof(struct iw_event) - dlen);
 931                 } else {
 932                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 933                         custom += IW_EV_POINT_OFF;
 934                 }
 935
 936                 switch (iwe->cmd) {
 937                 case IWEVEXPIRED:
 938                         madwifi_del_sta(drv, (u8 *) iwe->u.addr.sa_data);
 939                         break;
 940                 case IWEVREGISTERED:
 941                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 942                         break;
 943                 case IWEVCUSTOM:
 944                         if (custom + iwe->u.data.length > end)
 945                                 return;
 946                         buf = malloc(iwe->u.data.length + 1);
 947                         if (buf == NULL)
 948                                 return;         /* XXX */
 949                         memcpy(buf, custom, iwe->u.data.length);
 950                         buf[iwe->u.data.length] = '\0';
 951                         madwifi_wireless_event_wireless_custom(drv, buf);
 952                         free(buf);
 953                         break;
 954                 }
 955
 956                 pos += iwe->len;
 957         }
 958 }
 959
 960
 961 static void
 962 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
 963                                                struct nlmsghdr *h, int len)
 964 {
 965         struct ifinfomsg *ifi;
 966         int attrlen, nlmsg_len, rta_len;
 967         struct rtattr * attr;
 968
 969         if (len < (int) sizeof(*ifi))
 970                 return;
 971
 972         ifi = NLMSG_DATA(h);
 973
 974         if (ifi->ifi_index != drv->ifindex)
 975                 return;
 976
 977         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
 978
 979         attrlen = h->nlmsg_len - nlmsg_len;
 980         if (attrlen < 0)
 981                 return;
 982
 983         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
 984
 985         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 986         while (RTA_OK(attr, attrlen)) {
 987                 if (attr->rta_type == IFLA_WIRELESS) {
 988                         madwifi_wireless_event_wireless(
 989                                 drv, ((char *) attr) + rta_len,
 990                                 attr->rta_len - rta_len);
 991                 }
 992                 attr = RTA_NEXT(attr, attrlen);
 993         }
 994 }
 995
 996
 997 static void
 998 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
 999 {
1000         char buf[256];
1001         int left;
1002         struct sockaddr_nl from;
1003         socklen_t fromlen;
1004         struct nlmsghdr *h;
1005         struct madwifi_driver_data *drv = eloop_ctx;
1006
1007         fromlen = sizeof(from);
1008         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1009                         (struct sockaddr *) &from, &fromlen);
1010         if (left < 0) {
1011                 if (errno != EINTR && errno != EAGAIN)
1012                         perror("recvfrom(netlink)");
1013                 return;
1014         }
1015
1016         h = (struct nlmsghdr *) buf;
1017         while (left >= (int) sizeof(*h)) {
1018                 int len, plen;
1019
1020                 len = h->nlmsg_len;
1021                 plen = len - sizeof(*h);
1022                 if (len > left || plen < 0) {
1023                         printf("Malformed netlink message: "
1024                                "len=%d left=%d plen=%d\n",
1025                                len, left, plen);
1026                         break;
1027                 }
1028
1029                 switch (h->nlmsg_type) {
1030                 case RTM_NEWLINK:
1031                         madwifi_wireless_event_rtm_newlink(drv, h, plen);
1032                         break;
1033                 }
1034
1035                 len = NLMSG_ALIGN(len);
1036                 left -= len;
1037                 h = (struct nlmsghdr *) ((char *) h + len);
1038         }
1039
1040         if (left > 0) {
1041                 printf("%d extra bytes in the end of netlink message\n", left);
1042         }
1043 }
1044
1045
1046 static int
1047 madwifi_get_we_version(struct madwifi_driver_data *drv)
1048 {
1049         struct iw_range *range;
1050         struct iwreq iwr;
1051         int minlen;
1052         size_t buflen;
1053
1054         drv->we_version = 0;
1055
1056         /*
1057          * Use larger buffer than struct iw_range in order to allow the
1058          * structure to grow in the future.
1059          */
1060         buflen = sizeof(struct iw_range) + 500;
1061         range = os_zalloc(buflen);
1062         if (range == NULL)
1063                 return -1;
1064
1065         memset(&iwr, 0, sizeof(iwr));
1066         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1067         iwr.u.data.pointer = (caddr_t) range;
1068         iwr.u.data.length = buflen;
1069
1070         minlen = ((char *) &range->enc_capa) - (char *) range +
1071                 sizeof(range->enc_capa);
1072
1073         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1074                 perror("ioctl[SIOCGIWRANGE]");
1075                 free(range);
1076                 return -1;
1077         } else if (iwr.u.data.length >= minlen &&
1078                    range->we_version_compiled >= 18) {
1079                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1080                            "WE(source)=%d enc_capa=0x%x",
1081                            range->we_version_compiled,
1082                            range->we_version_source,
1083                            range->enc_capa);
1084                 drv->we_version = range->we_version_compiled;
1085         }
1086
1087         free(range);
1088         return 0;
1089 }
1090
1091
1092 static int
1093 madwifi_wireless_event_init(void *priv)
1094 {
1095         struct madwifi_driver_data *drv = priv;
1096         int s;
1097         struct sockaddr_nl local;
1098
1099         madwifi_get_we_version(drv);
1100
1101         drv->wext_sock = -1;
1102
1103         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1104         if (s < 0) {
1105                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1106                 return -1;
1107         }
1108
1109         memset(&local, 0, sizeof(local));
1110         local.nl_family = AF_NETLINK;
1111         local.nl_groups = RTMGRP_LINK;
1112         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1113                 perror("bind(netlink)");
1114                 close(s);
1115                 return -1;
1116         }
1117
1118         eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1119         drv->wext_sock = s;
1120
1121         return 0;
1122 }
1123
1124
1125 static void
1126 madwifi_wireless_event_deinit(void *priv)
1127 {
1128         struct madwifi_driver_data *drv = priv;
1129
1130         if (drv != NULL) {
1131                 if (drv->wext_sock < 0)
1132                         return;
1133                 eloop_unregister_read_sock(drv->wext_sock);
1134                 close(drv->wext_sock);
1135         }
1136 }
1137
1138
1139 static int
1140 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1141                    int encrypt, const u8 *own_addr)
1142 {
1143         struct madwifi_driver_data *drv = priv;
1144         unsigned char buf[3000];
1145         unsigned char *bp = buf;
1146         struct l2_ethhdr *eth;
1147         size_t len;
1148         int status;
1149
1150         /*
1151          * Prepend the Ethernet header.  If the caller left us
1152          * space at the front we could just insert it but since
1153          * we don't know we copy to a local buffer.  Given the frequency
1154          * and size of frames this probably doesn't matter.
1155          */
1156         len = data_len + sizeof(struct l2_ethhdr);
1157         if (len > sizeof(buf)) {
1158                 bp = malloc(len);
1159                 if (bp == NULL) {
1160                         printf("EAPOL frame discarded, cannot malloc temp "
1161                                "buffer of size %lu!\n", (unsigned long) len);
1162                         return -1;
1163                 }
1164         }
1165         eth = (struct l2_ethhdr *) bp;
1166         memcpy(eth->h_dest, addr, ETH_ALEN);
1167         memcpy(eth->h_source, own_addr, ETH_ALEN);
1168         eth->h_proto = htons(ETH_P_EAPOL);
1169         memcpy(eth+1, data, data_len);
1170
1171         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1172
1173         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1174
1175         if (bp != buf)
1176                 free(bp);
1177         return status;
1178 }
1179
1180 static void
1181 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1182 {
1183         struct madwifi_driver_data *drv = ctx;
1184         struct hostapd_data *hapd = drv->hapd;
1185         struct sta_info *sta;
1186
1187         sta = ap_get_sta(hapd, src_addr);
1188         if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1189                 printf("Data frame from not associated STA %s\n",
1190                        ether_sprintf(src_addr));
1191                 /* XXX cannot happen */
1192                 return;
1193         }
1194         ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
1195                            len - sizeof(struct l2_ethhdr));
1196 }
1197
1198 static void *
1199 madwifi_init(struct hostapd_data *hapd)
1200 {
1201         struct madwifi_driver_data *drv;
1202         struct ifreq ifr;
1203         struct iwreq iwr;
1204
1205         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1206         if (drv == NULL) {
1207                 printf("Could not allocate memory for madwifi driver data\n");
1208                 return NULL;
1209         }
1210
1211         drv->hapd = hapd;
1212         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1213         if (drv->ioctl_sock < 0) {
1214                 perror("socket[PF_INET,SOCK_DGRAM]");
1215                 goto bad;
1216         }
1217         memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
1218
1219         memset(&ifr, 0, sizeof(ifr));
1220         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1221         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1222                 perror("ioctl(SIOCGIFINDEX)");
1223                 goto bad;
1224         }
1225         drv->ifindex = ifr.ifr_ifindex;
1226
1227         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1228                                         handle_read, drv, 1);
1229         if (drv->sock_xmit == NULL)
1230                 goto bad;
1231         if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
1232                 goto bad;
1233         if (hapd->conf->bridge[0] != '\0') {
1234                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1235                            hapd->conf->bridge);
1236                 drv->sock_recv = l2_packet_init(hapd->conf->bridge, NULL,
1237                                                 ETH_P_EAPOL, handle_read, drv,
1238                                                 1);
1239                 if (drv->sock_recv == NULL)
1240                         goto bad;
1241         } else
1242                 drv->sock_recv = drv->sock_xmit;
1243
1244         memset(&iwr, 0, sizeof(iwr));
1245         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1246
1247         iwr.u.mode = IW_MODE_MASTER;
1248
1249         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1250                 perror("ioctl[SIOCSIWMODE]");
1251                 printf("Could not set interface to master mode!\n");
1252                 goto bad;
1253         }
1254
1255         madwifi_set_iface_flags(drv, 0);        /* mark down during setup */
1256         madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1257
1258         return drv;
1259 bad:
1260         if (drv->sock_xmit != NULL)
1261                 l2_packet_deinit(drv->sock_xmit);
1262         if (drv->ioctl_sock >= 0)
1263                 close(drv->ioctl_sock);
1264         if (drv != NULL)
1265                 free(drv);
1266         return NULL;
1267 }
1268
1269
1270 static void
1271 madwifi_deinit(void *priv)
1272 {
1273         struct madwifi_driver_data *drv = priv;
1274
1275         (void) madwifi_set_iface_flags(drv, 0);
1276         if (drv->ioctl_sock >= 0)
1277                 close(drv->ioctl_sock);
1278         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1279                 l2_packet_deinit(drv->sock_recv);
1280         if (drv->sock_xmit != NULL)
1281                 l2_packet_deinit(drv->sock_xmit);
1282         if (drv->sock_raw)
1283                 l2_packet_deinit(drv->sock_raw);
1284         free(drv);
1285 }
1286
1287 static int
1288 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1289 {
1290         struct madwifi_driver_data *drv = priv;
1291         struct iwreq iwr;
1292
1293         memset(&iwr, 0, sizeof(iwr));
1294         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1295         iwr.u.essid.flags = 1; /* SSID active */
1296         iwr.u.essid.pointer = (caddr_t) buf;
1297         iwr.u.essid.length = len + 1;
1298
1299         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1300                 perror("ioctl[SIOCSIWESSID]");
1301                 printf("len=%d\n", len);
1302                 return -1;
1303         }
1304         return 0;
1305 }
1306
1307 static int
1308 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1309 {
1310         struct madwifi_driver_data *drv = priv;
1311         struct iwreq iwr;
1312         int ret = 0;
1313
1314         memset(&iwr, 0, sizeof(iwr));
1315         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1316         iwr.u.essid.pointer = (caddr_t) buf;
1317         iwr.u.essid.length = len;
1318
1319         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1320                 perror("ioctl[SIOCGIWESSID]");
1321                 ret = -1;
1322         } else
1323                 ret = iwr.u.essid.length;
1324
1325         return ret;
1326 }
1327
1328 static int
1329 madwifi_set_countermeasures(void *priv, int enabled)
1330 {
1331         struct madwifi_driver_data *drv = priv;
1332         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1333         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1334 }
1335
1336 static int
1337 madwifi_commit(void *priv)
1338 {
1339         return madwifi_set_iface_flags(priv, 1);
1340 }
1341
1342 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1343         .name                   = "madwifi",
1344         .init                   = madwifi_init,
1345         .deinit                 = madwifi_deinit,
1346         .set_ieee8021x          = madwifi_set_ieee8021x,
1347         .set_privacy            = madwifi_set_privacy,
1348         .set_encryption         = madwifi_set_key,
1349         .get_seqnum             = madwifi_get_seqnum,
1350         .flush                  = madwifi_flush,
1351         .set_generic_elem       = madwifi_set_opt_ie,
1352         .wireless_event_init    = madwifi_wireless_event_init,
1353         .wireless_event_deinit  = madwifi_wireless_event_deinit,
1354         .sta_set_flags          = madwifi_sta_set_flags,
1355         .read_sta_data          = madwifi_read_sta_driver_data,
1356         .send_eapol             = madwifi_send_eapol,
1357         .sta_disassoc           = madwifi_sta_disassoc,
1358         .sta_deauth             = madwifi_sta_deauth,
1359         .set_ssid               = madwifi_set_ssid,
1360         .get_ssid               = madwifi_get_ssid,
1361         .set_countermeasures    = madwifi_set_countermeasures,
1362         .sta_clear_stats        = madwifi_sta_clear_stats,
1363         .commit                 = madwifi_commit,
1364 };