src/drivers/driver_madwifi.c

   1 /*
   2  * WPA Supplicant - 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) 2004-2007, 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  * While this driver wrapper supports both AP (hostapd) and station
  17  * (wpa_supplicant) operations, the station side is deprecated and
  18  * driver_wext.c should be used instead. This driver wrapper should only be
  19  * used with hostapd for AP mode functionality.
  20  */
  21
  22 #include "includes.h"
  23 #include <sys/ioctl.h>
  24
  25 #include "common.h"
  26 #include "driver.h"
  27 #include "driver_wext.h"
  28 #include "eloop.h"
  29 #include "common/ieee802_11_defs.h"
  30 #include "wireless_copy.h"
  31
  32 /*
  33  * Avoid conflicts with wpa_supplicant definitions by undefining a definition.
  34  */
  35 #undef WME_OUI_TYPE
  36
  37 #include <include/compat.h>
  38 #include <net80211/ieee80211.h>
  39 #ifdef WME_NUM_AC
  40 /* Assume this is built against BSD branch of madwifi driver. */
  41 #define MADWIFI_BSD
  42 #include <net80211/_ieee80211.h>
  43 #endif /* WME_NUM_AC */
  44 #include <net80211/ieee80211_crypto.h>
  45 #include <net80211/ieee80211_ioctl.h>
  46
  47 #ifdef CONFIG_WPS
  48 #ifdef IEEE80211_IOCTL_FILTERFRAME
  49 #include <netpacket/packet.h>
  50
  51 #ifndef ETH_P_80211_RAW
  52 #define ETH_P_80211_RAW 0x0019
  53 #endif
  54 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  55 #endif /* CONFIG_WPS */
  56
  57 /*
  58  * Avoid conflicts with hostapd definitions by undefining couple of defines
  59  * from madwifi header files.
  60  */
  61 #undef RSN_VERSION
  62 #undef WPA_VERSION
  63 #undef WPA_OUI_TYPE
  64 #undef WME_OUI_TYPE
  65
  66
  67 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  68 /* Assume this is built against madwifi-ng */
  69 #define MADWIFI_NG
  70 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  71
  72
  73 #ifdef HOSTAPD
  74
  75 #include "priv_netlink.h"
  76 #include "l2_packet/l2_packet.h"
  77
  78
  79 struct madwifi_driver_data {
  80         struct hostapd_data *hapd;              /* back pointer */
  81
  82         char    iface[IFNAMSIZ + 1];
  83         int     ifindex;
  84         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  85         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  86         int     ioctl_sock;                     /* socket for ioctl() use */
  87         int     wext_sock;                      /* socket for wireless events */
  88         int     we_version;
  89         u8      acct_mac[ETH_ALEN];
  90         struct hostap_sta_driver_data acct_data;
  91
  92         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  93 };
  94
  95 static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
  96                               int reason_code);
  97
  98 static int
  99 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
 100 {
 101         struct iwreq iwr;
 102         int do_inline = len < IFNAMSIZ;
 103
 104         memset(&iwr, 0, sizeof(iwr));
 105         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 106 #ifdef IEEE80211_IOCTL_FILTERFRAME
 107         /* FILTERFRAME must be NOT inline, regardless of size. */
 108         if (op == IEEE80211_IOCTL_FILTERFRAME)
 109                 do_inline = 0;
 110 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 111         if (op == IEEE80211_IOCTL_SET_APPIEBUF)
 112                 do_inline = 0;
 113         if (do_inline) {
 114                 /*
 115                  * Argument data fits inline; put it there.
 116                  */
 117                 memcpy(iwr.u.name, data, len);
 118         } else {
 119                 /*
 120                  * Argument data too big for inline transfer; setup a
 121                  * parameter block instead; the kernel will transfer
 122                  * the data for the driver.
 123                  */
 124                 iwr.u.data.pointer = data;
 125                 iwr.u.data.length = len;
 126         }
 127
 128         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 129 #ifdef MADWIFI_NG
 130                 int first = IEEE80211_IOCTL_SETPARAM;
 131                 static const char *opnames[] = {
 132                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 133                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 134                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 135                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 136                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 137                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 138                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 139                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 140                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 141                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 142                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 143                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 144                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 145                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 146                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 147                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 148                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 149                         NULL,
 150                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 151                         NULL,
 152                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 153                         NULL,
 154                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 155                         NULL,
 156                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 157                         NULL,
 158                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 159                         NULL,
 160                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 161                         NULL,
 162                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 163                 };
 164 #else /* MADWIFI_NG */
 165                 int first = IEEE80211_IOCTL_SETPARAM;
 166                 static const char *opnames[] = {
 167                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 168                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 169                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 170                         "ioctl[SIOCIWFIRSTPRIV+3]",
 171                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 172                         "ioctl[SIOCIWFIRSTPRIV+5]",
 173                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 174                         "ioctl[SIOCIWFIRSTPRIV+7]",
 175                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 176                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 177                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 178                         "ioctl[SIOCIWFIRSTPRIV+11]",
 179                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 180                         "ioctl[SIOCIWFIRSTPRIV+13]",
 181                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 182                         "ioctl[SIOCIWFIRSTPRIV+15]",
 183                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 184                         "ioctl[SIOCIWFIRSTPRIV+17]",
 185                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 186                 };
 187 #endif /* MADWIFI_NG */
 188                 int idx = op - first;
 189                 if (first <= op &&
 190                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 191                     opnames[idx])
 192                         perror(opnames[idx]);
 193                 else
 194                         perror("ioctl[unknown???]");
 195                 return -1;
 196         }
 197         return 0;
 198 }
 199
 200 static int
 201 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 202 {
 203         struct iwreq iwr;
 204
 205         memset(&iwr, 0, sizeof(iwr));
 206         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 207         iwr.u.mode = op;
 208         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 209
 210         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 211                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 212                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 213                            "arg %d)", __func__, op, arg);
 214                 return -1;
 215         }
 216         return 0;
 217 }
 218
 219 #ifndef CONFIG_NO_STDOUT_DEBUG
 220 static const char *
 221 ether_sprintf(const u8 *addr)
 222 {
 223         static char buf[sizeof(MACSTR)];
 224
 225         if (addr != NULL)
 226                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 227         else
 228                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 229         return buf;
 230 }
 231 #endif /* CONFIG_NO_STDOUT_DEBUG */
 232
 233 /*
 234  * Configure WPA parameters.
 235  */
 236 static int
 237 madwifi_configure_wpa(struct madwifi_driver_data *drv,
 238                       struct wpa_bss_params *params)
 239 {
 240         int v;
 241
 242         switch (params->wpa_group) {
 243         case WPA_CIPHER_CCMP:
 244                 v = IEEE80211_CIPHER_AES_CCM;
 245                 break;
 246         case WPA_CIPHER_TKIP:
 247                 v = IEEE80211_CIPHER_TKIP;
 248                 break;
 249         case WPA_CIPHER_WEP104:
 250                 v = IEEE80211_CIPHER_WEP;
 251                 break;
 252         case WPA_CIPHER_WEP40:
 253                 v = IEEE80211_CIPHER_WEP;
 254                 break;
 255         case WPA_CIPHER_NONE:
 256                 v = IEEE80211_CIPHER_NONE;
 257                 break;
 258         default:
 259                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 260                            params->wpa_group);
 261                 return -1;
 262         }
 263         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 264         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 265                 printf("Unable to set group key cipher to %u\n", v);
 266                 return -1;
 267         }
 268         if (v == IEEE80211_CIPHER_WEP) {
 269                 /* key length is done only for specific ciphers */
 270                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 271                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 272                         printf("Unable to set group key length to %u\n", v);
 273                         return -1;
 274                 }
 275         }
 276
 277         v = 0;
 278         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 279                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 280         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 281                 v |= 1<<IEEE80211_CIPHER_TKIP;
 282         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 283                 v |= 1<<IEEE80211_CIPHER_NONE;
 284         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 285         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 286                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 287                 return -1;
 288         }
 289
 290         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 291                    __func__, params->wpa_key_mgmt);
 292         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS,
 293                           params->wpa_key_mgmt)) {
 294                 printf("Unable to set key management algorithms to 0x%x\n",
 295                         params->wpa_key_mgmt);
 296                 return -1;
 297         }
 298
 299         v = 0;
 300         if (params->rsn_preauth)
 301                 v |= BIT(0);
 302         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 303                    __func__, params->rsn_preauth);
 304         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 305                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 306                 return -1;
 307         }
 308
 309         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, params->wpa);
 310         if (set80211param(drv, IEEE80211_PARAM_WPA, params->wpa)) {
 311                 printf("Unable to set WPA to %u\n", params->wpa);
 312                 return -1;
 313         }
 314         return 0;
 315 }
 316
 317
 318 static int
 319 madwifi_set_iface_flags(void *priv, int dev_up)
 320 {
 321         struct madwifi_driver_data *drv = priv;
 322         struct ifreq ifr;
 323
 324         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 325
 326         if (drv->ioctl_sock < 0)
 327                 return -1;
 328
 329         memset(&ifr, 0, sizeof(ifr));
 330         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 331
 332         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 333                 perror("ioctl[SIOCGIFFLAGS]");
 334                 return -1;
 335         }
 336
 337         if (dev_up)
 338                 ifr.ifr_flags |= IFF_UP;
 339         else
 340                 ifr.ifr_flags &= ~IFF_UP;
 341
 342         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 343                 perror("ioctl[SIOCSIFFLAGS]");
 344                 return -1;
 345         }
 346
 347         return 0;
 348 }
 349
 350 static int
 351 madwifi_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 352 {
 353         struct madwifi_driver_data *drv = priv;
 354
 355         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 356
 357         if (!params->enabled) {
 358                 /* XXX restore state */
 359                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 360                         IEEE80211_AUTH_AUTO);
 361         }
 362         if (!params->wpa && !params->ieee802_1x) {
 363                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 364                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 365                 return -1;
 366         }
 367         if (params->wpa && madwifi_configure_wpa(drv, params) != 0) {
 368                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 369                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 370                 return -1;
 371         }
 372         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 373                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 374                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 375                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 376                 return -1;
 377         }
 378
 379         return 0;
 380 }
 381
 382 static int
 383 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 384 {
 385         struct madwifi_driver_data *drv = priv;
 386
 387         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 388
 389         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 390 }
 391
 392 static int
 393 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 394 {
 395         struct madwifi_driver_data *drv = priv;
 396         struct ieee80211req_mlme mlme;
 397         int ret;
 398
 399         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 400                    __func__, ether_sprintf(addr), authorized);
 401
 402         if (authorized)
 403                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 404         else
 405                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 406         mlme.im_reason = 0;
 407         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 408         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 409         if (ret < 0) {
 410                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 411                            __func__, authorized ? "" : "un", MAC2STR(addr));
 412         }
 413
 414         return ret;
 415 }
 416
 417 static int
 418 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 419                       int flags_or, int flags_and)
 420 {
 421         /* For now, only support setting Authorized flag */
 422         if (flags_or & WPA_STA_AUTHORIZED)
 423                 return madwifi_set_sta_authorized(priv, addr, 1);
 424         if (!(flags_and & WPA_STA_AUTHORIZED))
 425                 return madwifi_set_sta_authorized(priv, addr, 0);
 426         return 0;
 427 }
 428
 429 static int
 430 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 431 {
 432         struct madwifi_driver_data *drv = priv;
 433         struct ieee80211req_del_key wk;
 434         int ret;
 435
 436         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 437                    __func__, ether_sprintf(addr), key_idx);
 438
 439         memset(&wk, 0, sizeof(wk));
 440         if (addr != NULL) {
 441                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 442                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 443         } else {
 444                 wk.idk_keyix = key_idx;
 445         }
 446
 447         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 448         if (ret < 0) {
 449                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 450                            " key_idx %d)", __func__, ether_sprintf(addr),
 451                            key_idx);
 452         }
 453
 454         return ret;
 455 }
 456
 457 static int
 458 wpa_driver_madwifi_set_key(const char *ifname, void *priv, wpa_alg alg,
 459                            const u8 *addr, int key_idx, int set_tx,
 460                            const u8 *seq, size_t seq_len,
 461                            const u8 *key, size_t key_len)
 462 {
 463         struct madwifi_driver_data *drv = priv;
 464         struct ieee80211req_key wk;
 465         u_int8_t cipher;
 466         int ret;
 467
 468         if (alg == WPA_ALG_NONE)
 469                 return madwifi_del_key(drv, addr, key_idx);
 470
 471         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 472                    __func__, alg, ether_sprintf(addr), key_idx);
 473
 474         if (alg == WPA_ALG_WEP)
 475                 cipher = IEEE80211_CIPHER_WEP;
 476         else if (alg == WPA_ALG_TKIP)
 477                 cipher = IEEE80211_CIPHER_TKIP;
 478         else if (alg == WPA_ALG_CCMP)
 479                 cipher = IEEE80211_CIPHER_AES_CCM;
 480         else {
 481                 printf("%s: unknown/unsupported algorithm %d\n",
 482                         __func__, alg);
 483                 return -1;
 484         }
 485
 486         if (key_len > sizeof(wk.ik_keydata)) {
 487                 printf("%s: key length %lu too big\n", __func__,
 488                        (unsigned long) key_len);
 489                 return -3;
 490         }
 491
 492         memset(&wk, 0, sizeof(wk));
 493         wk.ik_type = cipher;
 494         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 495         if (addr == NULL) {
 496                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 497                 wk.ik_keyix = key_idx;
 498                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 499         } else {
 500                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 501                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 502         }
 503         wk.ik_keylen = key_len;
 504         memcpy(wk.ik_keydata, key, key_len);
 505
 506         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 507         if (ret < 0) {
 508                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 509                            " key_idx %d alg %d key_len %lu set_tx %d)",
 510                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 511                            alg, (unsigned long) key_len, set_tx);
 512         }
 513
 514         return ret;
 515 }
 516
 517
 518 static int
 519 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 520                    u8 *seq)
 521 {
 522         struct madwifi_driver_data *drv = priv;
 523         struct ieee80211req_key wk;
 524
 525         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 526                    __func__, ether_sprintf(addr), idx);
 527
 528         memset(&wk, 0, sizeof(wk));
 529         if (addr == NULL)
 530                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 531         else
 532                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 533         wk.ik_keyix = idx;
 534
 535         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 536                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 537                            "(addr " MACSTR " key_idx %d)",
 538                            __func__, MAC2STR(wk.ik_macaddr), idx);
 539                 return -1;
 540         }
 541
 542 #ifdef WORDS_BIGENDIAN
 543         {
 544                 /*
 545                  * wk.ik_keytsc is in host byte order (big endian), need to
 546                  * swap it to match with the byte order used in WPA.
 547                  */
 548                 int i;
 549                 u8 tmp[WPA_KEY_RSC_LEN];
 550                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 551                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 552                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 553                 }
 554         }
 555 #else /* WORDS_BIGENDIAN */
 556         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 557 #endif /* WORDS_BIGENDIAN */
 558         return 0;
 559 }
 560
 561
 562 static int
 563 madwifi_flush(void *priv)
 564 {
 565 #ifdef MADWIFI_BSD
 566         u8 allsta[IEEE80211_ADDR_LEN];
 567         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 568         return madwifi_sta_deauth(priv, NULL, allsta,
 569                                   IEEE80211_REASON_AUTH_LEAVE);
 570 #else /* MADWIFI_BSD */
 571         return 0;               /* XXX */
 572 #endif /* MADWIFI_BSD */
 573 }
 574
 575
 576 static int
 577 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 578                              const u8 *addr)
 579 {
 580         struct madwifi_driver_data *drv = priv;
 581
 582 #ifdef MADWIFI_BSD
 583         struct ieee80211req_sta_stats stats;
 584
 585         memset(data, 0, sizeof(*data));
 586
 587         /*
 588          * Fetch statistics for station from the system.
 589          */
 590         memset(&stats, 0, sizeof(stats));
 591         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 592         if (set80211priv(drv,
 593 #ifdef MADWIFI_NG
 594                          IEEE80211_IOCTL_STA_STATS,
 595 #else /* MADWIFI_NG */
 596                          IEEE80211_IOCTL_GETSTASTATS,
 597 #endif /* MADWIFI_NG */
 598                          &stats, sizeof(stats))) {
 599                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 600                            MACSTR ")", __func__, MAC2STR(addr));
 601                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 602                         memcpy(data, &drv->acct_data, sizeof(*data));
 603                         return 0;
 604                 }
 605
 606                 printf("Failed to get station stats information element.\n");
 607                 return -1;
 608         }
 609
 610         data->rx_packets = stats.is_stats.ns_rx_data;
 611         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 612         data->tx_packets = stats.is_stats.ns_tx_data;
 613         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 614         return 0;
 615
 616 #else /* MADWIFI_BSD */
 617
 618         char buf[1024], line[128], *pos;
 619         FILE *f;
 620         unsigned long val;
 621
 622         memset(data, 0, sizeof(*data));
 623         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 624                  drv->iface, MAC2STR(addr));
 625
 626         f = fopen(buf, "r");
 627         if (!f) {
 628                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 629                         return -1;
 630                 memcpy(data, &drv->acct_data, sizeof(*data));
 631                 return 0;
 632         }
 633         /* Need to read proc file with in one piece, so use large enough
 634          * buffer. */
 635         setbuffer(f, buf, sizeof(buf));
 636
 637         while (fgets(line, sizeof(line), f)) {
 638                 pos = strchr(line, '=');
 639                 if (!pos)
 640                         continue;
 641                 *pos++ = '\0';
 642                 val = strtoul(pos, NULL, 10);
 643                 if (strcmp(line, "rx_packets") == 0)
 644                         data->rx_packets = val;
 645                 else if (strcmp(line, "tx_packets") == 0)
 646                         data->tx_packets = val;
 647                 else if (strcmp(line, "rx_bytes") == 0)
 648                         data->rx_bytes = val;
 649                 else if (strcmp(line, "tx_bytes") == 0)
 650                         data->tx_bytes = val;
 651         }
 652
 653         fclose(f);
 654
 655         return 0;
 656 #endif /* MADWIFI_BSD */
 657 }
 658
 659
 660 static int
 661 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 662 {
 663 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 664         struct madwifi_driver_data *drv = priv;
 665         struct ieee80211req_mlme mlme;
 666         int ret;
 667
 668         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 669
 670         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 671         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 672         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 673                            sizeof(mlme));
 674         if (ret < 0) {
 675                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 676                            MACSTR ")", __func__, MAC2STR(addr));
 677         }
 678
 679         return ret;
 680 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 681         return 0; /* FIX */
 682 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 683 }
 684
 685
 686 static int
 687 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 688 {
 689         /*
 690          * Do nothing; we setup parameters at startup that define the
 691          * contents of the beacon information element.
 692          */
 693         return 0;
 694 }
 695
 696 static int
 697 madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 698                    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 *own_addr, const u8 *addr,
 722                      int reason_code)
 723 {
 724         struct madwifi_driver_data *drv = priv;
 725         struct ieee80211req_mlme mlme;
 726         int ret;
 727
 728         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 729                    __func__, ether_sprintf(addr), reason_code);
 730
 731         mlme.im_op = IEEE80211_MLME_DISASSOC;
 732         mlme.im_reason = reason_code;
 733         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 734         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 735         if (ret < 0) {
 736                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 737                            MACSTR " reason %d)",
 738                            __func__, MAC2STR(addr), reason_code);
 739         }
 740
 741         return ret;
 742 }
 743
 744 #ifdef CONFIG_WPS
 745 #ifdef IEEE80211_IOCTL_FILTERFRAME
 746 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 747                                 size_t len)
 748 {
 749         struct madwifi_driver_data *drv = ctx;
 750         const struct ieee80211_mgmt *mgmt;
 751         const u8 *end, *ie;
 752         u16 fc;
 753         size_t ie_len;
 754
 755         /* Send Probe Request information to WPS processing */
 756
 757         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 758                 return;
 759         mgmt = (const struct ieee80211_mgmt *) buf;
 760
 761         fc = le_to_host16(mgmt->frame_control);
 762         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 763             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 764                 return;
 765
 766         end = buf + len;
 767         ie = mgmt->u.probe_req.variable;
 768         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 769
 770         hostapd_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
 771 }
 772 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 773 #endif /* CONFIG_WPS */
 774
 775 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 776 {
 777         int ret = 0;
 778 #ifdef CONFIG_WPS
 779 #ifdef IEEE80211_IOCTL_FILTERFRAME
 780         struct ieee80211req_set_filter filt;
 781
 782         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 783         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 784
 785         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 786                            sizeof(struct ieee80211req_set_filter));
 787         if (ret)
 788                 return ret;
 789
 790         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 791                                        madwifi_raw_receive, drv, 1);
 792         if (drv->sock_raw == NULL)
 793                 return -1;
 794 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 795 #endif /* CONFIG_WPS */
 796         return ret;
 797 }
 798
 799 #ifdef CONFIG_WPS
 800 static int
 801 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 802 {
 803         struct madwifi_driver_data *drv = priv;
 804         u8 buf[256];
 805         struct ieee80211req_getset_appiebuf *beac_ie;
 806
 807         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 808                    (unsigned long) len);
 809
 810         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 811         beac_ie->app_frmtype = frametype;
 812         beac_ie->app_buflen = len;
 813         memcpy(&(beac_ie->app_buf[0]), ie, len);
 814
 815         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 816                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 817 }
 818
 819 static int
 820 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
 821                           size_t len)
 822 {
 823         return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
 824 }
 825
 826 static int
 827 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
 828                               size_t len)
 829 {
 830         return madwifi_set_wps_ie(priv, ie, len,
 831                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 832 }
 833 #else /* CONFIG_WPS */
 834 #define madwifi_set_wps_beacon_ie NULL
 835 #define madwifi_set_wps_probe_resp_ie NULL
 836 #endif /* CONFIG_WPS */
 837
 838 static int
 839 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 840 {
 841         struct hostapd_data *hapd = drv->hapd;
 842         struct ieee80211req_wpaie ie;
 843         int ielen = 0, res;
 844         u8 *iebuf = NULL;
 845
 846         /*
 847          * Fetch negotiated WPA/RSN parameters from the system.
 848          */
 849         memset(&ie, 0, sizeof(ie));
 850         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 851         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 852                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
 853                            __func__);
 854                 goto no_ie;
 855         }
 856         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 857                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 858         iebuf = ie.wpa_ie;
 859         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 860          * Assume the IE was not included if the IE type is unknown. */
 861         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 862                 iebuf[1] = 0;
 863 #ifdef MADWIFI_NG
 864         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 865                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 866         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 867                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 868                  * set. This is needed for WPA2. */
 869                 iebuf = ie.rsn_ie;
 870                 if (iebuf[0] != WLAN_EID_RSN)
 871                         iebuf[1] = 0;
 872         }
 873 #endif /* MADWIFI_NG */
 874
 875         ielen = iebuf[1];
 876         if (ielen == 0)
 877                 iebuf = NULL;
 878         else
 879                 ielen += 2;
 880
 881 no_ie:
 882         res = hostapd_notif_assoc(hapd, addr, iebuf, ielen);
 883
 884         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 885                 /* Cached accounting data is not valid anymore. */
 886                 memset(drv->acct_mac, 0, ETH_ALEN);
 887                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 888         }
 889
 890         return res;
 891 }
 892
 893 static void
 894 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 895                                        char *custom)
 896 {
 897         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 898
 899         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 900                 char *pos;
 901                 u8 addr[ETH_ALEN];
 902                 pos = strstr(custom, "addr=");
 903                 if (pos == NULL) {
 904                         wpa_printf(MSG_DEBUG,
 905                                    "MLME-MICHAELMICFAILURE.indication "
 906                                    "without sender address ignored");
 907                         return;
 908                 }
 909                 pos += 5;
 910                 if (hwaddr_aton(pos, addr) == 0) {
 911                         union wpa_event_data data;
 912                         os_memset(&data, 0, sizeof(data));
 913                         data.michael_mic_failure.unicast = 1;
 914                         data.michael_mic_failure.src = addr;
 915                         wpa_supplicant_event(drv->hapd,
 916                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 917                 } else {
 918                         wpa_printf(MSG_DEBUG,
 919                                    "MLME-MICHAELMICFAILURE.indication "
 920                                    "with invalid MAC address");
 921                 }
 922         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 923                 char *key, *value;
 924                 u32 val;
 925                 key = custom;
 926                 while ((key = strchr(key, '\n')) != NULL) {
 927                         key++;
 928                         value = strchr(key, '=');
 929                         if (value == NULL)
 930                                 continue;
 931                         *value++ = '\0';
 932                         val = strtoul(value, NULL, 10);
 933                         if (strcmp(key, "mac") == 0)
 934                                 hwaddr_aton(value, drv->acct_mac);
 935                         else if (strcmp(key, "rx_packets") == 0)
 936                                 drv->acct_data.rx_packets = val;
 937                         else if (strcmp(key, "tx_packets") == 0)
 938                                 drv->acct_data.tx_packets = val;
 939                         else if (strcmp(key, "rx_bytes") == 0)
 940                                 drv->acct_data.rx_bytes = val;
 941                         else if (strcmp(key, "tx_bytes") == 0)
 942                                 drv->acct_data.tx_bytes = val;
 943                         key = value;
 944                 }
 945         }
 946 }
 947
 948 static void
 949 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 950                                             char *data, int len)
 951 {
 952         struct iw_event iwe_buf, *iwe = &iwe_buf;
 953         char *pos, *end, *custom, *buf;
 954
 955         pos = data;
 956         end = data + len;
 957
 958         while (pos + IW_EV_LCP_LEN <= end) {
 959                 /* Event data may be unaligned, so make a local, aligned copy
 960                  * before processing. */
 961                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 962                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 963                            iwe->cmd, iwe->len);
 964                 if (iwe->len <= IW_EV_LCP_LEN)
 965                         return;
 966
 967                 custom = pos + IW_EV_POINT_LEN;
 968                 if (drv->we_version > 18 &&
 969                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 970                      iwe->cmd == IWEVCUSTOM)) {
 971                         /* WE-19 removed the pointer from struct iw_point */
 972                         char *dpos = (char *) &iwe_buf.u.data.length;
 973                         int dlen = dpos - (char *) &iwe_buf;
 974                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 975                                sizeof(struct iw_event) - dlen);
 976                 } else {
 977                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 978                         custom += IW_EV_POINT_OFF;
 979                 }
 980
 981                 switch (iwe->cmd) {
 982                 case IWEVEXPIRED:
 983                         hostapd_notif_disassoc(drv->hapd,
 984                                                (u8 *) iwe->u.addr.sa_data);
 985                         break;
 986                 case IWEVREGISTERED:
 987                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 988                         break;
 989                 case IWEVCUSTOM:
 990                         if (custom + iwe->u.data.length > end)
 991                                 return;
 992                         buf = malloc(iwe->u.data.length + 1);
 993                         if (buf == NULL)
 994                                 return;         /* XXX */
 995                         memcpy(buf, custom, iwe->u.data.length);
 996                         buf[iwe->u.data.length] = '\0';
 997                         madwifi_wireless_event_wireless_custom(drv, buf);
 998                         free(buf);
 999                         break;
1000                 }
1001
1002                 pos += iwe->len;
1003         }
1004 }
1005
1006
1007 static void
1008 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
1009                                                struct nlmsghdr *h, int len)
1010 {
1011         struct ifinfomsg *ifi;
1012         int attrlen, nlmsg_len, rta_len;
1013         struct rtattr * attr;
1014
1015         if (len < (int) sizeof(*ifi))
1016                 return;
1017
1018         ifi = NLMSG_DATA(h);
1019
1020         if (ifi->ifi_index != drv->ifindex)
1021                 return;
1022
1023         nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
1024
1025         attrlen = NLMSG_PAYLOAD(h, sizeof(struct ifinfomsg));
1026         if (attrlen < 0)
1027                 return;
1028
1029         attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
1030
1031         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1032         while (RTA_OK(attr, attrlen)) {
1033                 if (attr->rta_type == IFLA_WIRELESS) {
1034                         madwifi_wireless_event_wireless(
1035                                 drv, ((char *) attr) + rta_len,
1036                                 attr->rta_len - rta_len);
1037                 }
1038                 attr = RTA_NEXT(attr, attrlen);
1039         }
1040 }
1041
1042
1043 static void
1044 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
1045 {
1046         char buf[256];
1047         int left;
1048         struct sockaddr_nl from;
1049         socklen_t fromlen;
1050         struct nlmsghdr *h;
1051         struct madwifi_driver_data *drv = eloop_ctx;
1052
1053         fromlen = sizeof(from);
1054         left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1055                         (struct sockaddr *) &from, &fromlen);
1056         if (left < 0) {
1057                 if (errno != EINTR && errno != EAGAIN)
1058                         perror("recvfrom(netlink)");
1059                 return;
1060         }
1061
1062         h = (struct nlmsghdr *) buf;
1063         while (left >= (int) sizeof(*h)) {
1064                 int len, plen;
1065
1066                 len = h->nlmsg_len;
1067                 plen = len - sizeof(*h);
1068                 if (len > left || plen < 0) {
1069                         printf("Malformed netlink message: "
1070                                "len=%d left=%d plen=%d\n",
1071                                len, left, plen);
1072                         break;
1073                 }
1074
1075                 switch (h->nlmsg_type) {
1076                 case RTM_NEWLINK:
1077                         madwifi_wireless_event_rtm_newlink(drv, h, plen);
1078                         break;
1079                 }
1080
1081                 len = NLMSG_ALIGN(len);
1082                 left -= len;
1083                 h = (struct nlmsghdr *) ((char *) h + len);
1084         }
1085
1086         if (left > 0) {
1087                 printf("%d extra bytes in the end of netlink message\n", left);
1088         }
1089 }
1090
1091
1092 static int
1093 madwifi_get_we_version(struct madwifi_driver_data *drv)
1094 {
1095         struct iw_range *range;
1096         struct iwreq iwr;
1097         int minlen;
1098         size_t buflen;
1099
1100         drv->we_version = 0;
1101
1102         /*
1103          * Use larger buffer than struct iw_range in order to allow the
1104          * structure to grow in the future.
1105          */
1106         buflen = sizeof(struct iw_range) + 500;
1107         range = os_zalloc(buflen);
1108         if (range == NULL)
1109                 return -1;
1110
1111         memset(&iwr, 0, sizeof(iwr));
1112         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1113         iwr.u.data.pointer = (caddr_t) range;
1114         iwr.u.data.length = buflen;
1115
1116         minlen = ((char *) &range->enc_capa) - (char *) range +
1117                 sizeof(range->enc_capa);
1118
1119         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1120                 perror("ioctl[SIOCGIWRANGE]");
1121                 free(range);
1122                 return -1;
1123         } else if (iwr.u.data.length >= minlen &&
1124                    range->we_version_compiled >= 18) {
1125                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1126                            "WE(source)=%d enc_capa=0x%x",
1127                            range->we_version_compiled,
1128                            range->we_version_source,
1129                            range->enc_capa);
1130                 drv->we_version = range->we_version_compiled;
1131         }
1132
1133         free(range);
1134         return 0;
1135 }
1136
1137
1138 static int
1139 madwifi_wireless_event_init(struct madwifi_driver_data *drv)
1140 {
1141         int s;
1142         struct sockaddr_nl local;
1143
1144         madwifi_get_we_version(drv);
1145
1146         drv->wext_sock = -1;
1147
1148         s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1149         if (s < 0) {
1150                 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1151                 return -1;
1152         }
1153
1154         memset(&local, 0, sizeof(local));
1155         local.nl_family = AF_NETLINK;
1156         local.nl_groups = RTMGRP_LINK;
1157         if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1158                 perror("bind(netlink)");
1159                 close(s);
1160                 return -1;
1161         }
1162
1163         eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1164         drv->wext_sock = s;
1165
1166         return 0;
1167 }
1168
1169
1170 static void
1171 madwifi_wireless_event_deinit(struct madwifi_driver_data *drv)
1172 {
1173         if (drv->wext_sock < 0)
1174                 return;
1175         eloop_unregister_read_sock(drv->wext_sock);
1176         close(drv->wext_sock);
1177 }
1178
1179
1180 static int
1181 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1182                    int encrypt, const u8 *own_addr)
1183 {
1184         struct madwifi_driver_data *drv = priv;
1185         unsigned char buf[3000];
1186         unsigned char *bp = buf;
1187         struct l2_ethhdr *eth;
1188         size_t len;
1189         int status;
1190
1191         /*
1192          * Prepend the Ethernet header.  If the caller left us
1193          * space at the front we could just insert it but since
1194          * we don't know we copy to a local buffer.  Given the frequency
1195          * and size of frames this probably doesn't matter.
1196          */
1197         len = data_len + sizeof(struct l2_ethhdr);
1198         if (len > sizeof(buf)) {
1199                 bp = malloc(len);
1200                 if (bp == NULL) {
1201                         printf("EAPOL frame discarded, cannot malloc temp "
1202                                "buffer of size %lu!\n", (unsigned long) len);
1203                         return -1;
1204                 }
1205         }
1206         eth = (struct l2_ethhdr *) bp;
1207         memcpy(eth->h_dest, addr, ETH_ALEN);
1208         memcpy(eth->h_source, own_addr, ETH_ALEN);
1209         eth->h_proto = host_to_be16(ETH_P_EAPOL);
1210         memcpy(eth+1, data, data_len);
1211
1212         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1213
1214         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1215
1216         if (bp != buf)
1217                 free(bp);
1218         return status;
1219 }
1220
1221 static void
1222 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1223 {
1224         struct madwifi_driver_data *drv = ctx;
1225         hostapd_eapol_receive(drv->hapd, src_addr,
1226                               buf + sizeof(struct l2_ethhdr),
1227                               len - sizeof(struct l2_ethhdr));
1228 }
1229
1230 static void *
1231 madwifi_init(struct hostapd_data *hapd, struct wpa_init_params *params)
1232 {
1233         struct madwifi_driver_data *drv;
1234         struct ifreq ifr;
1235         struct iwreq iwr;
1236
1237         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1238         if (drv == NULL) {
1239                 printf("Could not allocate memory for madwifi driver data\n");
1240                 return NULL;
1241         }
1242
1243         drv->hapd = hapd;
1244         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1245         if (drv->ioctl_sock < 0) {
1246                 perror("socket[PF_INET,SOCK_DGRAM]");
1247                 goto bad;
1248         }
1249         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
1250
1251         memset(&ifr, 0, sizeof(ifr));
1252         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1253         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1254                 perror("ioctl(SIOCGIFINDEX)");
1255                 goto bad;
1256         }
1257         drv->ifindex = ifr.ifr_ifindex;
1258
1259         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1260                                         handle_read, drv, 1);
1261         if (drv->sock_xmit == NULL)
1262                 goto bad;
1263         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
1264                 goto bad;
1265         if (params->bridge[0]) {
1266                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1267                            params->bridge[0]);
1268                 drv->sock_recv = l2_packet_init(params->bridge[0], NULL,
1269                                                 ETH_P_EAPOL, handle_read, drv,
1270                                                 1);
1271                 if (drv->sock_recv == NULL)
1272                         goto bad;
1273         } else
1274                 drv->sock_recv = drv->sock_xmit;
1275
1276         memset(&iwr, 0, sizeof(iwr));
1277         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1278
1279         iwr.u.mode = IW_MODE_MASTER;
1280
1281         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1282                 perror("ioctl[SIOCSIWMODE]");
1283                 printf("Could not set interface to master mode!\n");
1284                 goto bad;
1285         }
1286
1287         madwifi_set_iface_flags(drv, 0);        /* mark down during setup */
1288         madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1289
1290         madwifi_receive_probe_req(drv);
1291
1292         if (madwifi_wireless_event_init(drv))
1293                 goto bad;
1294
1295         return drv;
1296 bad:
1297         if (drv->sock_xmit != NULL)
1298                 l2_packet_deinit(drv->sock_xmit);
1299         if (drv->ioctl_sock >= 0)
1300                 close(drv->ioctl_sock);
1301         if (drv != NULL)
1302                 free(drv);
1303         return NULL;
1304 }
1305
1306
1307 static void
1308 madwifi_deinit(void *priv)
1309 {
1310         struct madwifi_driver_data *drv = priv;
1311
1312         madwifi_wireless_event_deinit(drv);
1313         (void) madwifi_set_iface_flags(drv, 0);
1314         if (drv->ioctl_sock >= 0)
1315                 close(drv->ioctl_sock);
1316         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1317                 l2_packet_deinit(drv->sock_recv);
1318         if (drv->sock_xmit != NULL)
1319                 l2_packet_deinit(drv->sock_xmit);
1320         if (drv->sock_raw)
1321                 l2_packet_deinit(drv->sock_raw);
1322         free(drv);
1323 }
1324
1325 static int
1326 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1327 {
1328         struct madwifi_driver_data *drv = priv;
1329         struct iwreq iwr;
1330
1331         memset(&iwr, 0, sizeof(iwr));
1332         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1333         iwr.u.essid.flags = 1; /* SSID active */
1334         iwr.u.essid.pointer = (caddr_t) buf;
1335         iwr.u.essid.length = len + 1;
1336
1337         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1338                 perror("ioctl[SIOCSIWESSID]");
1339                 printf("len=%d\n", len);
1340                 return -1;
1341         }
1342         return 0;
1343 }
1344
1345 static int
1346 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1347 {
1348         struct madwifi_driver_data *drv = priv;
1349         struct iwreq iwr;
1350         int ret = 0;
1351
1352         memset(&iwr, 0, sizeof(iwr));
1353         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1354         iwr.u.essid.pointer = (caddr_t) buf;
1355         iwr.u.essid.length = len;
1356
1357         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1358                 perror("ioctl[SIOCGIWESSID]");
1359                 ret = -1;
1360         } else
1361                 ret = iwr.u.essid.length;
1362
1363         return ret;
1364 }
1365
1366 static int
1367 madwifi_set_countermeasures(void *priv, int enabled)
1368 {
1369         struct madwifi_driver_data *drv = priv;
1370         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1371         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1372 }
1373
1374 static int
1375 madwifi_commit(void *priv)
1376 {
1377         return madwifi_set_iface_flags(priv, 1);
1378 }
1379
1380 #else /* HOSTAPD */
1381
1382 struct wpa_driver_madwifi_data {
1383         void *wext; /* private data for driver_wext */
1384         void *ctx;
1385         char ifname[IFNAMSIZ + 1];
1386         int sock;
1387 };
1388
1389 static int wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg);
1390 static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
1391                                                size_t ies_len);
1392
1393
1394 static int
1395 set80211priv(struct wpa_driver_madwifi_data *drv, int op, void *data, int len,
1396              int show_err)
1397 {
1398         struct iwreq iwr;
1399
1400         os_memset(&iwr, 0, sizeof(iwr));
1401         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1402         if (len < IFNAMSIZ &&
1403             op != IEEE80211_IOCTL_SET_APPIEBUF) {
1404                 /*
1405                  * Argument data fits inline; put it there.
1406                  */
1407                 os_memcpy(iwr.u.name, data, len);
1408         } else {
1409                 /*
1410                  * Argument data too big for inline transfer; setup a
1411                  * parameter block instead; the kernel will transfer
1412                  * the data for the driver.
1413                  */
1414                 iwr.u.data.pointer = data;
1415                 iwr.u.data.length = len;
1416         }
1417
1418         if (ioctl(drv->sock, op, &iwr) < 0) {
1419                 if (show_err) {
1420 #ifdef MADWIFI_NG
1421                         int first = IEEE80211_IOCTL_SETPARAM;
1422                         int last = IEEE80211_IOCTL_KICKMAC;
1423                         static const char *opnames[] = {
1424                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1425                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1426                                 "ioctl[IEEE80211_IOCTL_SETMODE]",
1427                                 "ioctl[IEEE80211_IOCTL_GETMODE]",
1428                                 "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
1429                                 "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
1430                                 "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
1431                                 "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
1432                                 "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
1433                                 NULL,
1434                                 "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
1435                                 "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
1436                                 NULL,
1437                                 "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
1438                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1439                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1440                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1441                                 NULL,
1442                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1443                                 NULL,
1444                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1445                                 NULL,
1446                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1447                                 NULL,
1448                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1449                                 NULL,
1450                                 "ioctl[IEEE80211_IOCTL_WDSMAC]",
1451                                 NULL,
1452                                 "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
1453                                 NULL,
1454                                 "ioctl[IEEE80211_IOCTL_KICKMAC]",
1455                         };
1456 #else /* MADWIFI_NG */
1457                         int first = IEEE80211_IOCTL_SETPARAM;
1458                         int last = IEEE80211_IOCTL_CHANLIST;
1459                         static const char *opnames[] = {
1460                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1461                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1462                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1463                                 "ioctl[IEEE80211_IOCTL_GETKEY]",
1464                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1465                                 NULL,
1466                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1467                                 NULL,
1468                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1469                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1470                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1471                                 NULL,
1472                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1473                                 NULL,
1474                                 "ioctl[IEEE80211_IOCTL_CHANLIST]",
1475                         };
1476 #endif /* MADWIFI_NG */
1477                         int idx = op - first;
1478                         if (first <= op && op <= last &&
1479                             idx < (int) (sizeof(opnames) / sizeof(opnames[0]))
1480                             && opnames[idx])
1481                                 perror(opnames[idx]);
1482                         else
1483                                 perror("ioctl[unknown???]");
1484                 }
1485                 return -1;
1486         }
1487         return 0;
1488 }
1489
1490 static int
1491 set80211param(struct wpa_driver_madwifi_data *drv, int op, int arg,
1492               int show_err)
1493 {
1494         struct iwreq iwr;
1495
1496         os_memset(&iwr, 0, sizeof(iwr));
1497         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1498         iwr.u.mode = op;
1499         os_memcpy(iwr.u.name+sizeof(u32), &arg, sizeof(arg));
1500
1501         if (ioctl(drv->sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
1502                 if (show_err)
1503                         perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
1504                 return -1;
1505         }
1506         return 0;
1507 }
1508
1509 static int
1510 wpa_driver_madwifi_set_wpa_ie(struct wpa_driver_madwifi_data *drv,
1511                               const u8 *wpa_ie, size_t wpa_ie_len)
1512 {
1513         struct iwreq iwr;
1514
1515         os_memset(&iwr, 0, sizeof(iwr));
1516         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1517         /* NB: SETOPTIE is not fixed-size so must not be inlined */
1518         iwr.u.data.pointer = (void *) wpa_ie;
1519         iwr.u.data.length = wpa_ie_len;
1520
1521         if (ioctl(drv->sock, IEEE80211_IOCTL_SETOPTIE, &iwr) < 0) {
1522                 perror("ioctl[IEEE80211_IOCTL_SETOPTIE]");
1523                 return -1;
1524         }
1525         return 0;
1526 }
1527
1528 static int
1529 wpa_driver_madwifi_del_key(struct wpa_driver_madwifi_data *drv, int key_idx,
1530                            const u8 *addr)
1531 {
1532         struct ieee80211req_del_key wk;
1533
1534         wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __FUNCTION__, key_idx);
1535         os_memset(&wk, 0, sizeof(wk));
1536         wk.idk_keyix = key_idx;
1537         if (addr != NULL)
1538                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1539
1540         return set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk), 1);
1541 }
1542
1543 static int
1544 wpa_driver_madwifi_set_key(const char *ifname, void *priv, wpa_alg alg,
1545                            const u8 *addr, int key_idx, int set_tx,
1546                            const u8 *seq, size_t seq_len,
1547                            const u8 *key, size_t key_len)
1548 {
1549         struct wpa_driver_madwifi_data *drv = priv;
1550         struct ieee80211req_key wk;
1551         char *alg_name;
1552         u_int8_t cipher;
1553
1554         if (alg == WPA_ALG_NONE)
1555                 return wpa_driver_madwifi_del_key(drv, key_idx, addr);
1556
1557         switch (alg) {
1558         case WPA_ALG_WEP:
1559                 if (addr == NULL || os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
1560                                               ETH_ALEN) == 0) {
1561                         /*
1562                          * madwifi did not seem to like static WEP key
1563                          * configuration with IEEE80211_IOCTL_SETKEY, so use
1564                          * Linux wireless extensions ioctl for this.
1565                          */
1566                         return wpa_driver_wext_set_key(ifname, drv->wext, alg,
1567                                                        addr, key_idx, set_tx,
1568                                                        seq, seq_len,
1569                                                        key, key_len);
1570                 }
1571                 alg_name = "WEP";
1572                 cipher = IEEE80211_CIPHER_WEP;
1573                 break;
1574         case WPA_ALG_TKIP:
1575                 alg_name = "TKIP";
1576                 cipher = IEEE80211_CIPHER_TKIP;
1577                 break;
1578         case WPA_ALG_CCMP:
1579                 alg_name = "CCMP";
1580                 cipher = IEEE80211_CIPHER_AES_CCM;
1581                 break;
1582         default:
1583                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1584                         __FUNCTION__, alg);
1585                 return -1;
1586         }
1587
1588         wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
1589                    "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
1590                    (unsigned long) seq_len, (unsigned long) key_len);
1591
1592         if (seq_len > sizeof(u_int64_t)) {
1593                 wpa_printf(MSG_DEBUG, "%s: seq_len %lu too big",
1594                            __FUNCTION__, (unsigned long) seq_len);
1595                 return -2;
1596         }
1597         if (key_len > sizeof(wk.ik_keydata)) {
1598                 wpa_printf(MSG_DEBUG, "%s: key length %lu too big",
1599                            __FUNCTION__, (unsigned long) key_len);
1600                 return -3;
1601         }
1602
1603         os_memset(&wk, 0, sizeof(wk));
1604         wk.ik_type = cipher;
1605         wk.ik_flags = IEEE80211_KEY_RECV;
1606         if (addr == NULL ||
1607             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1608                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1609         if (set_tx) {
1610                 wk.ik_flags |= IEEE80211_KEY_XMIT | IEEE80211_KEY_DEFAULT;
1611                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1612         } else
1613                 os_memset(wk.ik_macaddr, 0, IEEE80211_ADDR_LEN);
1614         wk.ik_keyix = key_idx;
1615         wk.ik_keylen = key_len;
1616 #ifdef WORDS_BIGENDIAN
1617 #define WPA_KEY_RSC_LEN 8
1618         {
1619                 size_t i;
1620                 u8 tmp[WPA_KEY_RSC_LEN];
1621                 os_memset(tmp, 0, sizeof(tmp));
1622                 for (i = 0; i < seq_len; i++)
1623                         tmp[WPA_KEY_RSC_LEN - i - 1] = seq[i];
1624                 os_memcpy(&wk.ik_keyrsc, tmp, WPA_KEY_RSC_LEN);
1625         }
1626 #else /* WORDS_BIGENDIAN */
1627         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1628 #endif /* WORDS_BIGENDIAN */
1629         os_memcpy(wk.ik_keydata, key, key_len);
1630
1631         return set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk), 1);
1632 }
1633
1634 static int
1635 wpa_driver_madwifi_set_countermeasures(void *priv, int enabled)
1636 {
1637         struct wpa_driver_madwifi_data *drv = priv;
1638         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1639         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled, 1);
1640 }
1641
1642 static int
1643 wpa_driver_madwifi_deauthenticate(void *priv, const u8 *addr, int reason_code)
1644 {
1645         struct wpa_driver_madwifi_data *drv = priv;
1646         struct ieee80211req_mlme mlme;
1647
1648         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1649         mlme.im_op = IEEE80211_MLME_DEAUTH;
1650         mlme.im_reason = reason_code;
1651         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1652         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1653 }
1654
1655 static int
1656 wpa_driver_madwifi_disassociate(void *priv, const u8 *addr, int reason_code)
1657 {
1658         struct wpa_driver_madwifi_data *drv = priv;
1659         struct ieee80211req_mlme mlme;
1660
1661         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1662         mlme.im_op = IEEE80211_MLME_DISASSOC;
1663         mlme.im_reason = reason_code;
1664         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1665         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1666 }
1667
1668 static int
1669 wpa_driver_madwifi_associate(void *priv,
1670                              struct wpa_driver_associate_params *params)
1671 {
1672         struct wpa_driver_madwifi_data *drv = priv;
1673         struct ieee80211req_mlme mlme;
1674         int ret = 0, privacy = 1;
1675
1676         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1677
1678         if (set80211param(drv, IEEE80211_PARAM_DROPUNENCRYPTED,
1679                           params->drop_unencrypted, 1) < 0)
1680                 ret = -1;
1681         if (wpa_driver_madwifi_set_auth_alg(drv, params->auth_alg) < 0)
1682                 ret = -1;
1683
1684         /*
1685          * NB: Don't need to set the freq or cipher-related state as
1686          *     this is implied by the bssid which is used to locate
1687          *     the scanned node state which holds it.  The ssid is
1688          *     needed to disambiguate an AP that broadcasts multiple
1689          *     ssid's but uses the same bssid.
1690          */
1691         /* XXX error handling is wrong but unclear what to do... */
1692         if (wpa_driver_madwifi_set_wpa_ie(drv, params->wpa_ie,
1693                                           params->wpa_ie_len) < 0)
1694                 ret = -1;
1695
1696         if (params->pairwise_suite == CIPHER_NONE &&
1697             params->group_suite == CIPHER_NONE &&
1698             params->key_mgmt_suite == KEY_MGMT_NONE &&
1699             params->wpa_ie_len == 0)
1700                 privacy = 0;
1701
1702         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, privacy, 1) < 0)
1703                 ret = -1;
1704
1705         if (params->wpa_ie_len &&
1706             set80211param(drv, IEEE80211_PARAM_WPA,
1707                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1, 1) < 0)
1708                 ret = -1;
1709
1710         if (params->bssid == NULL) {
1711                 /* ap_scan=2 mode - driver takes care of AP selection and
1712                  * roaming */
1713                 /* FIX: this does not seem to work; would probably need to
1714                  * change something in the driver */
1715                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0)
1716                         ret = -1;
1717
1718                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1719                                              params->ssid_len) < 0)
1720                         ret = -1;
1721         } else {
1722                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0)
1723                         ret = -1;
1724                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1725                                              params->ssid_len) < 0)
1726                         ret = -1;
1727                 os_memset(&mlme, 0, sizeof(mlme));
1728                 mlme.im_op = IEEE80211_MLME_ASSOC;
1729                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1730                 if (set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
1731                                  sizeof(mlme), 1) < 0) {
1732                         wpa_printf(MSG_DEBUG, "%s: SETMLME[ASSOC] failed",
1733                                    __func__);
1734                         ret = -1;
1735                 }
1736         }
1737
1738         return ret;
1739 }
1740
1741 static int
1742 wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg)
1743 {
1744         struct wpa_driver_madwifi_data *drv = priv;
1745         int authmode;
1746
1747         if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1748             (auth_alg & AUTH_ALG_SHARED_KEY))
1749                 authmode = IEEE80211_AUTH_AUTO;
1750         else if (auth_alg & AUTH_ALG_SHARED_KEY)
1751                 authmode = IEEE80211_AUTH_SHARED;
1752         else
1753                 authmode = IEEE80211_AUTH_OPEN;
1754
1755         return set80211param(drv, IEEE80211_PARAM_AUTHMODE, authmode, 1);
1756 }
1757
1758 static int
1759 wpa_driver_madwifi_scan(void *priv, struct wpa_driver_scan_params *params)
1760 {
1761         struct wpa_driver_madwifi_data *drv = priv;
1762         struct iwreq iwr;
1763         int ret = 0;
1764         const u8 *ssid = params->ssids[0].ssid;
1765         size_t ssid_len = params->ssids[0].ssid_len;
1766
1767         wpa_driver_madwifi_set_probe_req_ie(drv, params->extra_ies,
1768                                             params->extra_ies_len);
1769
1770         os_memset(&iwr, 0, sizeof(iwr));
1771         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1772
1773         /* set desired ssid before scan */
1774         /* FIX: scan should not break the current association, so using
1775          * set_ssid may not be the best way of doing this.. */
1776         if (wpa_driver_wext_set_ssid(drv->wext, ssid, ssid_len) < 0)
1777                 ret = -1;
1778
1779         if (ioctl(drv->sock, SIOCSIWSCAN, &iwr) < 0) {
1780                 perror("ioctl[SIOCSIWSCAN]");
1781                 ret = -1;
1782         }
1783
1784         /*
1785          * madwifi delivers a scan complete event so no need to poll, but
1786          * register a backup timeout anyway to make sure that we recover even
1787          * if the driver does not send this event for any reason. This timeout
1788          * will only be used if the event is not delivered (event handler will
1789          * cancel the timeout).
1790          */
1791         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
1792                              drv->ctx);
1793         eloop_register_timeout(30, 0, wpa_driver_wext_scan_timeout, drv->wext,
1794                                drv->ctx);
1795
1796         return ret;
1797 }
1798
1799 static int wpa_driver_madwifi_get_bssid(void *priv, u8 *bssid)
1800 {
1801         struct wpa_driver_madwifi_data *drv = priv;
1802         return wpa_driver_wext_get_bssid(drv->wext, bssid);
1803 }
1804
1805
1806 static int wpa_driver_madwifi_get_ssid(void *priv, u8 *ssid)
1807 {
1808         struct wpa_driver_madwifi_data *drv = priv;
1809         return wpa_driver_wext_get_ssid(drv->wext, ssid);
1810 }
1811
1812
1813 static struct wpa_scan_results *
1814 wpa_driver_madwifi_get_scan_results(void *priv)
1815 {
1816         struct wpa_driver_madwifi_data *drv = priv;
1817         return wpa_driver_wext_get_scan_results(drv->wext);
1818 }
1819
1820
1821 static int wpa_driver_madwifi_set_operstate(void *priv, int state)
1822 {
1823         struct wpa_driver_madwifi_data *drv = priv;
1824         return wpa_driver_wext_set_operstate(drv->wext, state);
1825 }
1826
1827
1828 static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
1829                                                size_t ies_len)
1830 {
1831         struct ieee80211req_getset_appiebuf *probe_req_ie;
1832         int ret;
1833
1834         probe_req_ie = os_malloc(sizeof(*probe_req_ie) + ies_len);
1835         if (probe_req_ie == NULL)
1836                 return -1;
1837
1838         probe_req_ie->app_frmtype = IEEE80211_APPIE_FRAME_PROBE_REQ;
1839         probe_req_ie->app_buflen = ies_len;
1840         os_memcpy(probe_req_ie->app_buf, ies, ies_len);
1841
1842         ret = set80211priv(priv, IEEE80211_IOCTL_SET_APPIEBUF, probe_req_ie,
1843                            sizeof(struct ieee80211req_getset_appiebuf) +
1844                            ies_len, 1);
1845
1846         os_free(probe_req_ie);
1847
1848         return ret;
1849 }
1850
1851
1852 static void * wpa_driver_madwifi_init(void *ctx, const char *ifname)
1853 {
1854         struct wpa_driver_madwifi_data *drv;
1855
1856         drv = os_zalloc(sizeof(*drv));
1857         if (drv == NULL)
1858                 return NULL;
1859         drv->wext = wpa_driver_wext_init(ctx, ifname);
1860         if (drv->wext == NULL)
1861                 goto fail;
1862
1863         drv->ctx = ctx;
1864         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1865         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1866         if (drv->sock < 0)
1867                 goto fail2;
1868
1869         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0) {
1870                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1871                            "roaming", __FUNCTION__);
1872                 goto fail3;
1873         }
1874
1875         if (set80211param(drv, IEEE80211_PARAM_WPA, 3, 1) < 0) {
1876                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support",
1877                            __FUNCTION__);
1878                 goto fail3;
1879         }
1880
1881         return drv;
1882
1883 fail3:
1884         close(drv->sock);
1885 fail2:
1886         wpa_driver_wext_deinit(drv->wext);
1887 fail:
1888         os_free(drv);
1889         return NULL;
1890 }
1891
1892
1893 static void wpa_driver_madwifi_deinit(void *priv)
1894 {
1895         struct wpa_driver_madwifi_data *drv = priv;
1896
1897         if (wpa_driver_madwifi_set_wpa_ie(drv, NULL, 0) < 0) {
1898                 wpa_printf(MSG_DEBUG, "%s: failed to clear WPA IE",
1899                            __FUNCTION__);
1900         }
1901         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0) {
1902                 wpa_printf(MSG_DEBUG, "%s: failed to enable driver-based "
1903                            "roaming", __FUNCTION__);
1904         }
1905         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, 0, 1) < 0) {
1906                 wpa_printf(MSG_DEBUG, "%s: failed to disable forced Privacy "
1907                            "flag", __FUNCTION__);
1908         }
1909         if (set80211param(drv, IEEE80211_PARAM_WPA, 0, 1) < 0) {
1910                 wpa_printf(MSG_DEBUG, "%s: failed to disable WPA",
1911                            __FUNCTION__);
1912         }
1913
1914         wpa_driver_wext_deinit(drv->wext);
1915
1916         close(drv->sock);
1917         os_free(drv);
1918 }
1919
1920 #endif /* HOSTAPD */
1921
1922
1923 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1924         .name                   = "madwifi",
1925         .desc                   = "MADWIFI 802.11 support (Atheros, etc.)",
1926         .set_key                = wpa_driver_madwifi_set_key,
1927 #ifdef HOSTAPD
1928         .hapd_init              = madwifi_init,
1929         .hapd_deinit            = madwifi_deinit,
1930         .set_ieee8021x          = madwifi_set_ieee8021x,
1931         .set_privacy            = madwifi_set_privacy,
1932         .get_seqnum             = madwifi_get_seqnum,
1933         .flush                  = madwifi_flush,
1934         .set_generic_elem       = madwifi_set_opt_ie,
1935         .sta_set_flags          = madwifi_sta_set_flags,
1936         .read_sta_data          = madwifi_read_sta_driver_data,
1937         .hapd_send_eapol        = madwifi_send_eapol,
1938         .sta_disassoc           = madwifi_sta_disassoc,
1939         .sta_deauth             = madwifi_sta_deauth,
1940         .hapd_set_ssid          = madwifi_set_ssid,
1941         .hapd_get_ssid          = madwifi_get_ssid,
1942         .hapd_set_countermeasures       = madwifi_set_countermeasures,
1943         .sta_clear_stats        = madwifi_sta_clear_stats,
1944         .commit                 = madwifi_commit,
1945         .set_wps_beacon_ie      = madwifi_set_wps_beacon_ie,
1946         .set_wps_probe_resp_ie  = madwifi_set_wps_probe_resp_ie,
1947 #else /* HOSTAPD */
1948         .get_bssid              = wpa_driver_madwifi_get_bssid,
1949         .get_ssid               = wpa_driver_madwifi_get_ssid,
1950         .init                   = wpa_driver_madwifi_init,
1951         .deinit                 = wpa_driver_madwifi_deinit,
1952         .set_countermeasures    = wpa_driver_madwifi_set_countermeasures,
1953         .scan2                  = wpa_driver_madwifi_scan,
1954         .get_scan_results2      = wpa_driver_madwifi_get_scan_results,
1955         .deauthenticate         = wpa_driver_madwifi_deauthenticate,
1956         .disassociate           = wpa_driver_madwifi_disassociate,
1957         .associate              = wpa_driver_madwifi_associate,
1958         .set_operstate          = wpa_driver_madwifi_set_operstate,
1959 #endif /* HOSTAPD */
1960 };