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 "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 #include "../../hostapd/hostapd.h"
  78 #include "../../hostapd/config.h"
  79 #include "../../hostapd/sta_flags.h"
  80
  81
  82 struct madwifi_driver_data {
  83         struct hostapd_data *hapd;              /* back pointer */
  84
  85         char    iface[IFNAMSIZ + 1];
  86         int     ifindex;
  87         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  88         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  89         int     ioctl_sock;                     /* socket for ioctl() use */
  90         int     wext_sock;                      /* socket for wireless events */
  91         int     we_version;
  92         u8      acct_mac[ETH_ALEN];
  93         struct hostap_sta_driver_data acct_data;
  94
  95         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  96 };
  97
  98 static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
  99                               int reason_code);
 100
 101 static int
 102 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
 103 {
 104         struct iwreq iwr;
 105         int do_inline = len < IFNAMSIZ;
 106
 107         memset(&iwr, 0, sizeof(iwr));
 108         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 109 #ifdef IEEE80211_IOCTL_FILTERFRAME
 110         /* FILTERFRAME must be NOT inline, regardless of size. */
 111         if (op == IEEE80211_IOCTL_FILTERFRAME)
 112                 do_inline = 0;
 113 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 114         if (op == IEEE80211_IOCTL_SET_APPIEBUF)
 115                 do_inline = 0;
 116         if (do_inline) {
 117                 /*
 118                  * Argument data fits inline; put it there.
 119                  */
 120                 memcpy(iwr.u.name, data, len);
 121         } else {
 122                 /*
 123                  * Argument data too big for inline transfer; setup a
 124                  * parameter block instead; the kernel will transfer
 125                  * the data for the driver.
 126                  */
 127                 iwr.u.data.pointer = data;
 128                 iwr.u.data.length = len;
 129         }
 130
 131         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 132 #ifdef MADWIFI_NG
 133                 int first = IEEE80211_IOCTL_SETPARAM;
 134                 static const char *opnames[] = {
 135                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 136                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 137                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 138                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 139                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 140                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 141                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 142                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 143                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 144                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 145                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 146                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 147                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 148                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 149                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 150                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 151                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 152                         NULL,
 153                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 154                         NULL,
 155                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 156                         NULL,
 157                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 158                         NULL,
 159                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 160                         NULL,
 161                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 162                         NULL,
 163                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 164                         NULL,
 165                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 166                 };
 167 #else /* MADWIFI_NG */
 168                 int first = IEEE80211_IOCTL_SETPARAM;
 169                 static const char *opnames[] = {
 170                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 171                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 172                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 173                         "ioctl[SIOCIWFIRSTPRIV+3]",
 174                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 175                         "ioctl[SIOCIWFIRSTPRIV+5]",
 176                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 177                         "ioctl[SIOCIWFIRSTPRIV+7]",
 178                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 179                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 180                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 181                         "ioctl[SIOCIWFIRSTPRIV+11]",
 182                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 183                         "ioctl[SIOCIWFIRSTPRIV+13]",
 184                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 185                         "ioctl[SIOCIWFIRSTPRIV+15]",
 186                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 187                         "ioctl[SIOCIWFIRSTPRIV+17]",
 188                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 189                 };
 190 #endif /* MADWIFI_NG */
 191                 int idx = op - first;
 192                 if (first <= op &&
 193                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 194                     opnames[idx])
 195                         perror(opnames[idx]);
 196                 else
 197                         perror("ioctl[unknown???]");
 198                 return -1;
 199         }
 200         return 0;
 201 }
 202
 203 static int
 204 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 205 {
 206         struct iwreq iwr;
 207
 208         memset(&iwr, 0, sizeof(iwr));
 209         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 210         iwr.u.mode = op;
 211         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 212
 213         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 214                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 215                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 216                            "arg %d)", __func__, op, arg);
 217                 return -1;
 218         }
 219         return 0;
 220 }
 221
 222 #ifndef CONFIG_NO_STDOUT_DEBUG
 223 static const char *
 224 ether_sprintf(const u8 *addr)
 225 {
 226         static char buf[sizeof(MACSTR)];
 227
 228         if (addr != NULL)
 229                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 230         else
 231                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 232         return buf;
 233 }
 234 #endif /* CONFIG_NO_STDOUT_DEBUG */
 235
 236 /*
 237  * Configure WPA parameters.
 238  */
 239 static int
 240 madwifi_configure_wpa(struct madwifi_driver_data *drv)
 241 {
 242         struct hostapd_data *hapd = drv->hapd;
 243         struct hostapd_bss_config *conf = hapd->conf;
 244         int v;
 245
 246         switch (conf->wpa_group) {
 247         case WPA_CIPHER_CCMP:
 248                 v = IEEE80211_CIPHER_AES_CCM;
 249                 break;
 250         case WPA_CIPHER_TKIP:
 251                 v = IEEE80211_CIPHER_TKIP;
 252                 break;
 253         case WPA_CIPHER_WEP104:
 254                 v = IEEE80211_CIPHER_WEP;
 255                 break;
 256         case WPA_CIPHER_WEP40:
 257                 v = IEEE80211_CIPHER_WEP;
 258                 break;
 259         case WPA_CIPHER_NONE:
 260                 v = IEEE80211_CIPHER_NONE;
 261                 break;
 262         default:
 263                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 264                            conf->wpa_group);
 265                 return -1;
 266         }
 267         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 268         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 269                 printf("Unable to set group key cipher to %u\n", v);
 270                 return -1;
 271         }
 272         if (v == IEEE80211_CIPHER_WEP) {
 273                 /* key length is done only for specific ciphers */
 274                 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 275                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 276                         printf("Unable to set group key length to %u\n", v);
 277                         return -1;
 278                 }
 279         }
 280
 281         v = 0;
 282         if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 283                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 284         if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 285                 v |= 1<<IEEE80211_CIPHER_TKIP;
 286         if (conf->wpa_pairwise & WPA_CIPHER_NONE)
 287                 v |= 1<<IEEE80211_CIPHER_NONE;
 288         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 289         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 290                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 291                 return -1;
 292         }
 293
 294         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 295                    __func__, conf->wpa_key_mgmt);
 296         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
 297                 printf("Unable to set key management algorithms to 0x%x\n",
 298                         conf->wpa_key_mgmt);
 299                 return -1;
 300         }
 301
 302         v = 0;
 303         if (conf->rsn_preauth)
 304                 v |= BIT(0);
 305         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 306                    __func__, conf->rsn_preauth);
 307         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 308                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 309                 return -1;
 310         }
 311
 312         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
 313         if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
 314                 printf("Unable to set WPA to %u\n", conf->wpa);
 315                 return -1;
 316         }
 317         return 0;
 318 }
 319
 320
 321 static int
 322 madwifi_set_iface_flags(void *priv, int dev_up)
 323 {
 324         struct madwifi_driver_data *drv = priv;
 325         struct ifreq ifr;
 326
 327         wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
 328
 329         if (drv->ioctl_sock < 0)
 330                 return -1;
 331
 332         memset(&ifr, 0, sizeof(ifr));
 333         os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
 334
 335         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 336                 perror("ioctl[SIOCGIFFLAGS]");
 337                 return -1;
 338         }
 339
 340         if (dev_up)
 341                 ifr.ifr_flags |= IFF_UP;
 342         else
 343                 ifr.ifr_flags &= ~IFF_UP;
 344
 345         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 346                 perror("ioctl[SIOCSIFFLAGS]");
 347                 return -1;
 348         }
 349
 350         return 0;
 351 }
 352
 353 static int
 354 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
 355 {
 356         struct madwifi_driver_data *drv = priv;
 357         struct hostapd_data *hapd = drv->hapd;
 358         struct hostapd_bss_config *conf = hapd->conf;
 359
 360         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 361
 362         if (!enabled) {
 363                 /* XXX restore state */
 364                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 365                         IEEE80211_AUTH_AUTO);
 366         }
 367         if (!conf->wpa && !conf->ieee802_1x) {
 368                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 369                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 370                 return -1;
 371         }
 372         if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
 373                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 374                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 375                 return -1;
 376         }
 377         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 378                 (conf->wpa ?  IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 379                 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
 380                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 381                 return -1;
 382         }
 383
 384         return 0;
 385 }
 386
 387 static int
 388 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
 389 {
 390         struct madwifi_driver_data *drv = priv;
 391
 392         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 393
 394         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 395 }
 396
 397 static int
 398 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 399 {
 400         struct madwifi_driver_data *drv = priv;
 401         struct ieee80211req_mlme mlme;
 402         int ret;
 403
 404         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 405                    __func__, ether_sprintf(addr), authorized);
 406
 407         if (authorized)
 408                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 409         else
 410                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 411         mlme.im_reason = 0;
 412         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 413         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 414         if (ret < 0) {
 415                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 416                            __func__, authorized ? "" : "un", MAC2STR(addr));
 417         }
 418
 419         return ret;
 420 }
 421
 422 static int
 423 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
 424                       int flags_or, int flags_and)
 425 {
 426         /* For now, only support setting Authorized flag */
 427         if (flags_or & WLAN_STA_AUTHORIZED)
 428                 return madwifi_set_sta_authorized(priv, addr, 1);
 429         if (!(flags_and & WLAN_STA_AUTHORIZED))
 430                 return madwifi_set_sta_authorized(priv, addr, 0);
 431         return 0;
 432 }
 433
 434 static int
 435 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 436 {
 437         struct madwifi_driver_data *drv = priv;
 438         struct ieee80211req_del_key wk;
 439         int ret;
 440
 441         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 442                    __func__, ether_sprintf(addr), key_idx);
 443
 444         memset(&wk, 0, sizeof(wk));
 445         if (addr != NULL) {
 446                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 447                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 448         } else {
 449                 wk.idk_keyix = key_idx;
 450         }
 451
 452         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 453         if (ret < 0) {
 454                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 455                            " key_idx %d)", __func__, ether_sprintf(addr),
 456                            key_idx);
 457         }
 458
 459         return ret;
 460 }
 461
 462 static int
 463 wpa_driver_madwifi_set_key(const char *ifname, void *priv, wpa_alg alg,
 464                            const u8 *addr, int key_idx, int set_tx,
 465                            const u8 *seq, size_t seq_len,
 466                            const u8 *key, size_t key_len)
 467 {
 468         struct madwifi_driver_data *drv = priv;
 469         struct ieee80211req_key wk;
 470         u_int8_t cipher;
 471         int ret;
 472
 473         if (alg == WPA_ALG_NONE)
 474                 return madwifi_del_key(drv, addr, key_idx);
 475
 476         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 477                    __func__, alg, ether_sprintf(addr), key_idx);
 478
 479         if (alg == WPA_ALG_WEP)
 480                 cipher = IEEE80211_CIPHER_WEP;
 481         else if (alg == WPA_ALG_TKIP)
 482                 cipher = IEEE80211_CIPHER_TKIP;
 483         else if (alg == WPA_ALG_CCMP)
 484                 cipher = IEEE80211_CIPHER_AES_CCM;
 485         else {
 486                 printf("%s: unknown/unsupported algorithm %d\n",
 487                         __func__, alg);
 488                 return -1;
 489         }
 490
 491         if (key_len > sizeof(wk.ik_keydata)) {
 492                 printf("%s: key length %lu too big\n", __func__,
 493                        (unsigned long) key_len);
 494                 return -3;
 495         }
 496
 497         memset(&wk, 0, sizeof(wk));
 498         wk.ik_type = cipher;
 499         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 500         if (addr == NULL) {
 501                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 502                 wk.ik_keyix = key_idx;
 503                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 504         } else {
 505                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 506                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 507         }
 508         wk.ik_keylen = key_len;
 509         memcpy(wk.ik_keydata, key, key_len);
 510
 511         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 512         if (ret < 0) {
 513                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 514                            " key_idx %d alg %d key_len %lu set_tx %d)",
 515                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 516                            alg, (unsigned long) key_len, set_tx);
 517         }
 518
 519         return ret;
 520 }
 521
 522
 523 static int
 524 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 525                    u8 *seq)
 526 {
 527         struct madwifi_driver_data *drv = priv;
 528         struct ieee80211req_key wk;
 529
 530         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 531                    __func__, ether_sprintf(addr), idx);
 532
 533         memset(&wk, 0, sizeof(wk));
 534         if (addr == NULL)
 535                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 536         else
 537                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 538         wk.ik_keyix = idx;
 539
 540         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 541                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 542                            "(addr " MACSTR " key_idx %d)",
 543                            __func__, MAC2STR(wk.ik_macaddr), idx);
 544                 return -1;
 545         }
 546
 547 #ifdef WORDS_BIGENDIAN
 548         {
 549                 /*
 550                  * wk.ik_keytsc is in host byte order (big endian), need to
 551                  * swap it to match with the byte order used in WPA.
 552                  */
 553                 int i;
 554                 u8 tmp[WPA_KEY_RSC_LEN];
 555                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 556                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 557                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 558                 }
 559         }
 560 #else /* WORDS_BIGENDIAN */
 561         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 562 #endif /* WORDS_BIGENDIAN */
 563         return 0;
 564 }
 565
 566
 567 static int
 568 madwifi_flush(void *priv)
 569 {
 570 #ifdef MADWIFI_BSD
 571         u8 allsta[IEEE80211_ADDR_LEN];
 572         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 573         return madwifi_sta_deauth(priv, NULL, allsta,
 574                                   IEEE80211_REASON_AUTH_LEAVE);
 575 #else /* MADWIFI_BSD */
 576         return 0;               /* XXX */
 577 #endif /* MADWIFI_BSD */
 578 }
 579
 580
 581 static int
 582 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 583                              const u8 *addr)
 584 {
 585         struct madwifi_driver_data *drv = priv;
 586
 587 #ifdef MADWIFI_BSD
 588         struct ieee80211req_sta_stats stats;
 589
 590         memset(data, 0, sizeof(*data));
 591
 592         /*
 593          * Fetch statistics for station from the system.
 594          */
 595         memset(&stats, 0, sizeof(stats));
 596         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 597         if (set80211priv(drv,
 598 #ifdef MADWIFI_NG
 599                          IEEE80211_IOCTL_STA_STATS,
 600 #else /* MADWIFI_NG */
 601                          IEEE80211_IOCTL_GETSTASTATS,
 602 #endif /* MADWIFI_NG */
 603                          &stats, sizeof(stats))) {
 604                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 605                            MACSTR ")", __func__, MAC2STR(addr));
 606                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 607                         memcpy(data, &drv->acct_data, sizeof(*data));
 608                         return 0;
 609                 }
 610
 611                 printf("Failed to get station stats information element.\n");
 612                 return -1;
 613         }
 614
 615         data->rx_packets = stats.is_stats.ns_rx_data;
 616         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 617         data->tx_packets = stats.is_stats.ns_tx_data;
 618         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 619         return 0;
 620
 621 #else /* MADWIFI_BSD */
 622
 623         char buf[1024], line[128], *pos;
 624         FILE *f;
 625         unsigned long val;
 626
 627         memset(data, 0, sizeof(*data));
 628         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 629                  drv->iface, MAC2STR(addr));
 630
 631         f = fopen(buf, "r");
 632         if (!f) {
 633                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 634                         return -1;
 635                 memcpy(data, &drv->acct_data, sizeof(*data));
 636                 return 0;
 637         }
 638         /* Need to read proc file with in one piece, so use large enough
 639          * buffer. */
 640         setbuffer(f, buf, sizeof(buf));
 641
 642         while (fgets(line, sizeof(line), f)) {
 643                 pos = strchr(line, '=');
 644                 if (!pos)
 645                         continue;
 646                 *pos++ = '\0';
 647                 val = strtoul(pos, NULL, 10);
 648                 if (strcmp(line, "rx_packets") == 0)
 649                         data->rx_packets = val;
 650                 else if (strcmp(line, "tx_packets") == 0)
 651                         data->tx_packets = val;
 652                 else if (strcmp(line, "rx_bytes") == 0)
 653                         data->rx_bytes = val;
 654                 else if (strcmp(line, "tx_bytes") == 0)
 655                         data->tx_bytes = val;
 656         }
 657
 658         fclose(f);
 659
 660         return 0;
 661 #endif /* MADWIFI_BSD */
 662 }
 663
 664
 665 static int
 666 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 667 {
 668 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 669         struct madwifi_driver_data *drv = priv;
 670         struct ieee80211req_mlme mlme;
 671         int ret;
 672
 673         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 674
 675         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 676         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 677         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 678                            sizeof(mlme));
 679         if (ret < 0) {
 680                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 681                            MACSTR ")", __func__, MAC2STR(addr));
 682         }
 683
 684         return ret;
 685 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 686         return 0; /* FIX */
 687 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 688 }
 689
 690
 691 static int
 692 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
 693 {
 694         /*
 695          * Do nothing; we setup parameters at startup that define the
 696          * contents of the beacon information element.
 697          */
 698         return 0;
 699 }
 700
 701 static int
 702 madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 703                    int reason_code)
 704 {
 705         struct madwifi_driver_data *drv = priv;
 706         struct ieee80211req_mlme mlme;
 707         int ret;
 708
 709         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 710                    __func__, ether_sprintf(addr), reason_code);
 711
 712         mlme.im_op = IEEE80211_MLME_DEAUTH;
 713         mlme.im_reason = reason_code;
 714         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 715         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 716         if (ret < 0) {
 717                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 718                            " reason %d)",
 719                            __func__, MAC2STR(addr), reason_code);
 720         }
 721
 722         return ret;
 723 }
 724
 725 static int
 726 madwifi_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 727                      int reason_code)
 728 {
 729         struct madwifi_driver_data *drv = priv;
 730         struct ieee80211req_mlme mlme;
 731         int ret;
 732
 733         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 734                    __func__, ether_sprintf(addr), reason_code);
 735
 736         mlme.im_op = IEEE80211_MLME_DISASSOC;
 737         mlme.im_reason = reason_code;
 738         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 739         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 740         if (ret < 0) {
 741                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 742                            MACSTR " reason %d)",
 743                            __func__, MAC2STR(addr), reason_code);
 744         }
 745
 746         return ret;
 747 }
 748
 749 #ifdef CONFIG_WPS
 750 #ifdef IEEE80211_IOCTL_FILTERFRAME
 751 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 752                                 size_t len)
 753 {
 754         struct madwifi_driver_data *drv = ctx;
 755         const struct ieee80211_mgmt *mgmt;
 756         const u8 *end, *ie;
 757         u16 fc;
 758         size_t ie_len;
 759
 760         /* Send Probe Request information to WPS processing */
 761
 762         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 763                 return;
 764         mgmt = (const struct ieee80211_mgmt *) buf;
 765
 766         fc = le_to_host16(mgmt->frame_control);
 767         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 768             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 769                 return;
 770
 771         end = buf + len;
 772         ie = mgmt->u.probe_req.variable;
 773         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 774
 775         hostapd_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
 776 }
 777 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 778 #endif /* CONFIG_WPS */
 779
 780 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 781 {
 782         int ret = 0;
 783 #ifdef CONFIG_WPS
 784 #ifdef IEEE80211_IOCTL_FILTERFRAME
 785         struct ieee80211req_set_filter filt;
 786
 787         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 788         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 789
 790         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 791                            sizeof(struct ieee80211req_set_filter));
 792         if (ret)
 793                 return ret;
 794
 795         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 796                                        madwifi_raw_receive, drv, 1);
 797         if (drv->sock_raw == NULL)
 798                 return -1;
 799 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 800 #endif /* CONFIG_WPS */
 801         return ret;
 802 }
 803
 804 #ifdef CONFIG_WPS
 805 static int
 806 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 807 {
 808         struct madwifi_driver_data *drv = priv;
 809         u8 buf[256];
 810         struct ieee80211req_getset_appiebuf *beac_ie;
 811
 812         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 813                    (unsigned long) len);
 814
 815         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 816         beac_ie->app_frmtype = frametype;
 817         beac_ie->app_buflen = len;
 818         memcpy(&(beac_ie->app_buf[0]), ie, len);
 819
 820         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 821                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 822 }
 823
 824 static int
 825 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
 826                           size_t len)
 827 {
 828         return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
 829 }
 830
 831 static int
 832 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
 833                               size_t len)
 834 {
 835         return madwifi_set_wps_ie(priv, ie, len,
 836                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 837 }
 838 #else /* CONFIG_WPS */
 839 #define madwifi_set_wps_beacon_ie NULL
 840 #define madwifi_set_wps_probe_resp_ie NULL
 841 #endif /* CONFIG_WPS */
 842
 843 static int
 844 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 845 {
 846         struct hostapd_data *hapd = drv->hapd;
 847         struct ieee80211req_wpaie ie;
 848         int ielen = 0, res;
 849         u8 *iebuf = NULL;
 850
 851         /*
 852          * Fetch negotiated WPA/RSN parameters from the system.
 853          */
 854         memset(&ie, 0, sizeof(ie));
 855         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 856         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 857                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
 858                            __func__);
 859                 goto no_ie;
 860         }
 861         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 862                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 863         iebuf = ie.wpa_ie;
 864         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 865          * Assume the IE was not included if the IE type is unknown. */
 866         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 867                 iebuf[1] = 0;
 868 #ifdef MADWIFI_NG
 869         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 870                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 871         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 872                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 873                  * set. This is needed for WPA2. */
 874                 iebuf = ie.rsn_ie;
 875                 if (iebuf[0] != WLAN_EID_RSN)
 876                         iebuf[1] = 0;
 877         }
 878 #endif /* MADWIFI_NG */
 879
 880         ielen = iebuf[1];
 881         if (ielen == 0)
 882                 iebuf = NULL;
 883         else
 884                 ielen += 2;
 885
 886 no_ie:
 887         res = hostapd_notif_assoc(hapd, addr, iebuf, ielen);
 888
 889         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 890                 /* Cached accounting data is not valid anymore. */
 891                 memset(drv->acct_mac, 0, ETH_ALEN);
 892                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 893         }
 894
 895         return res;
 896 }
 897
 898 static void
 899 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 900                                        char *custom)
 901 {
 902         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 903
 904         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 905                 char *pos;
 906                 u8 addr[ETH_ALEN];
 907                 pos = strstr(custom, "addr=");
 908                 if (pos == NULL) {
 909                         wpa_printf(MSG_DEBUG,
 910                                    "MLME-MICHAELMICFAILURE.indication "
 911                                    "without sender address ignored");
 912                         return;
 913                 }
 914                 pos += 5;
 915                 if (hwaddr_aton(pos, addr) == 0) {
 916                         hostapd_michael_mic_failure(drv->hapd, addr);
 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 = h->nlmsg_len - nlmsg_len;
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
1390 set80211priv(struct wpa_driver_madwifi_data *drv, int op, void *data, int len,
1391              int show_err)
1392 {
1393         struct iwreq iwr;
1394
1395         os_memset(&iwr, 0, sizeof(iwr));
1396         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1397         if (len < IFNAMSIZ &&
1398             op != IEEE80211_IOCTL_SET_APPIEBUF) {
1399                 /*
1400                  * Argument data fits inline; put it there.
1401                  */
1402                 os_memcpy(iwr.u.name, data, len);
1403         } else {
1404                 /*
1405                  * Argument data too big for inline transfer; setup a
1406                  * parameter block instead; the kernel will transfer
1407                  * the data for the driver.
1408                  */
1409                 iwr.u.data.pointer = data;
1410                 iwr.u.data.length = len;
1411         }
1412
1413         if (ioctl(drv->sock, op, &iwr) < 0) {
1414                 if (show_err) {
1415 #ifdef MADWIFI_NG
1416                         int first = IEEE80211_IOCTL_SETPARAM;
1417                         int last = IEEE80211_IOCTL_KICKMAC;
1418                         static const char *opnames[] = {
1419                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1420                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1421                                 "ioctl[IEEE80211_IOCTL_SETMODE]",
1422                                 "ioctl[IEEE80211_IOCTL_GETMODE]",
1423                                 "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
1424                                 "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
1425                                 "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
1426                                 "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
1427                                 "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
1428                                 NULL,
1429                                 "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
1430                                 "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
1431                                 NULL,
1432                                 "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
1433                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1434                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1435                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1436                                 NULL,
1437                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1438                                 NULL,
1439                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1440                                 NULL,
1441                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1442                                 NULL,
1443                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1444                                 NULL,
1445                                 "ioctl[IEEE80211_IOCTL_WDSMAC]",
1446                                 NULL,
1447                                 "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
1448                                 NULL,
1449                                 "ioctl[IEEE80211_IOCTL_KICKMAC]",
1450                         };
1451 #else /* MADWIFI_NG */
1452                         int first = IEEE80211_IOCTL_SETPARAM;
1453                         int last = IEEE80211_IOCTL_CHANLIST;
1454                         static const char *opnames[] = {
1455                                 "ioctl[IEEE80211_IOCTL_SETPARAM]",
1456                                 "ioctl[IEEE80211_IOCTL_GETPARAM]",
1457                                 "ioctl[IEEE80211_IOCTL_SETKEY]",
1458                                 "ioctl[IEEE80211_IOCTL_GETKEY]",
1459                                 "ioctl[IEEE80211_IOCTL_DELKEY]",
1460                                 NULL,
1461                                 "ioctl[IEEE80211_IOCTL_SETMLME]",
1462                                 NULL,
1463                                 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
1464                                 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
1465                                 "ioctl[IEEE80211_IOCTL_ADDMAC]",
1466                                 NULL,
1467                                 "ioctl[IEEE80211_IOCTL_DELMAC]",
1468                                 NULL,
1469                                 "ioctl[IEEE80211_IOCTL_CHANLIST]",
1470                         };
1471 #endif /* MADWIFI_NG */
1472                         int idx = op - first;
1473                         if (first <= op && op <= last &&
1474                             idx < (int) (sizeof(opnames) / sizeof(opnames[0]))
1475                             && opnames[idx])
1476                                 perror(opnames[idx]);
1477                         else
1478                                 perror("ioctl[unknown???]");
1479                 }
1480                 return -1;
1481         }
1482         return 0;
1483 }
1484
1485 static int
1486 set80211param(struct wpa_driver_madwifi_data *drv, int op, int arg,
1487               int show_err)
1488 {
1489         struct iwreq iwr;
1490
1491         os_memset(&iwr, 0, sizeof(iwr));
1492         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1493         iwr.u.mode = op;
1494         os_memcpy(iwr.u.name+sizeof(u32), &arg, sizeof(arg));
1495
1496         if (ioctl(drv->sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
1497                 if (show_err)
1498                         perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
1499                 return -1;
1500         }
1501         return 0;
1502 }
1503
1504 static int
1505 wpa_driver_madwifi_set_wpa_ie(struct wpa_driver_madwifi_data *drv,
1506                               const u8 *wpa_ie, size_t wpa_ie_len)
1507 {
1508         struct iwreq iwr;
1509
1510         os_memset(&iwr, 0, sizeof(iwr));
1511         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1512         /* NB: SETOPTIE is not fixed-size so must not be inlined */
1513         iwr.u.data.pointer = (void *) wpa_ie;
1514         iwr.u.data.length = wpa_ie_len;
1515
1516         if (ioctl(drv->sock, IEEE80211_IOCTL_SETOPTIE, &iwr) < 0) {
1517                 perror("ioctl[IEEE80211_IOCTL_SETOPTIE]");
1518                 return -1;
1519         }
1520         return 0;
1521 }
1522
1523 static int
1524 wpa_driver_madwifi_del_key(struct wpa_driver_madwifi_data *drv, int key_idx,
1525                            const u8 *addr)
1526 {
1527         struct ieee80211req_del_key wk;
1528
1529         wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __FUNCTION__, key_idx);
1530         os_memset(&wk, 0, sizeof(wk));
1531         wk.idk_keyix = key_idx;
1532         if (addr != NULL)
1533                 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1534
1535         return set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk), 1);
1536 }
1537
1538 static int
1539 wpa_driver_madwifi_set_key(const char *ifname, void *priv, wpa_alg alg,
1540                            const u8 *addr, int key_idx, int set_tx,
1541                            const u8 *seq, size_t seq_len,
1542                            const u8 *key, size_t key_len)
1543 {
1544         struct wpa_driver_madwifi_data *drv = priv;
1545         struct ieee80211req_key wk;
1546         char *alg_name;
1547         u_int8_t cipher;
1548
1549         if (alg == WPA_ALG_NONE)
1550                 return wpa_driver_madwifi_del_key(drv, key_idx, addr);
1551
1552         switch (alg) {
1553         case WPA_ALG_WEP:
1554                 if (addr == NULL || os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
1555                                               ETH_ALEN) == 0) {
1556                         /*
1557                          * madwifi did not seem to like static WEP key
1558                          * configuration with IEEE80211_IOCTL_SETKEY, so use
1559                          * Linux wireless extensions ioctl for this.
1560                          */
1561                         return wpa_driver_wext_set_key(ifname, drv->wext, alg,
1562                                                        addr, key_idx, set_tx,
1563                                                        seq, seq_len,
1564                                                        key, key_len);
1565                 }
1566                 alg_name = "WEP";
1567                 cipher = IEEE80211_CIPHER_WEP;
1568                 break;
1569         case WPA_ALG_TKIP:
1570                 alg_name = "TKIP";
1571                 cipher = IEEE80211_CIPHER_TKIP;
1572                 break;
1573         case WPA_ALG_CCMP:
1574                 alg_name = "CCMP";
1575                 cipher = IEEE80211_CIPHER_AES_CCM;
1576                 break;
1577         default:
1578                 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1579                         __FUNCTION__, alg);
1580                 return -1;
1581         }
1582
1583         wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
1584                    "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
1585                    (unsigned long) seq_len, (unsigned long) key_len);
1586
1587         if (seq_len > sizeof(u_int64_t)) {
1588                 wpa_printf(MSG_DEBUG, "%s: seq_len %lu too big",
1589                            __FUNCTION__, (unsigned long) seq_len);
1590                 return -2;
1591         }
1592         if (key_len > sizeof(wk.ik_keydata)) {
1593                 wpa_printf(MSG_DEBUG, "%s: key length %lu too big",
1594                            __FUNCTION__, (unsigned long) key_len);
1595                 return -3;
1596         }
1597
1598         os_memset(&wk, 0, sizeof(wk));
1599         wk.ik_type = cipher;
1600         wk.ik_flags = IEEE80211_KEY_RECV;
1601         if (addr == NULL ||
1602             os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) == 0)
1603                 wk.ik_flags |= IEEE80211_KEY_GROUP;
1604         if (set_tx) {
1605                 wk.ik_flags |= IEEE80211_KEY_XMIT | IEEE80211_KEY_DEFAULT;
1606                 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1607         } else
1608                 os_memset(wk.ik_macaddr, 0, IEEE80211_ADDR_LEN);
1609         wk.ik_keyix = key_idx;
1610         wk.ik_keylen = key_len;
1611 #ifdef WORDS_BIGENDIAN
1612 #define WPA_KEY_RSC_LEN 8
1613         {
1614                 size_t i;
1615                 u8 tmp[WPA_KEY_RSC_LEN];
1616                 os_memset(tmp, 0, sizeof(tmp));
1617                 for (i = 0; i < seq_len; i++)
1618                         tmp[WPA_KEY_RSC_LEN - i - 1] = seq[i];
1619                 os_memcpy(&wk.ik_keyrsc, tmp, WPA_KEY_RSC_LEN);
1620         }
1621 #else /* WORDS_BIGENDIAN */
1622         os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1623 #endif /* WORDS_BIGENDIAN */
1624         os_memcpy(wk.ik_keydata, key, key_len);
1625
1626         return set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk), 1);
1627 }
1628
1629 static int
1630 wpa_driver_madwifi_set_countermeasures(void *priv, int enabled)
1631 {
1632         struct wpa_driver_madwifi_data *drv = priv;
1633         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1634         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled, 1);
1635 }
1636
1637
1638 static int
1639 wpa_driver_madwifi_set_drop_unencrypted(void *priv, int enabled)
1640 {
1641         struct wpa_driver_madwifi_data *drv = priv;
1642         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1643         return set80211param(drv, IEEE80211_PARAM_DROPUNENCRYPTED, enabled, 1);
1644 }
1645
1646 static int
1647 wpa_driver_madwifi_deauthenticate(void *priv, const u8 *addr, int reason_code)
1648 {
1649         struct wpa_driver_madwifi_data *drv = priv;
1650         struct ieee80211req_mlme mlme;
1651
1652         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1653         mlme.im_op = IEEE80211_MLME_DEAUTH;
1654         mlme.im_reason = reason_code;
1655         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1656         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1657 }
1658
1659 static int
1660 wpa_driver_madwifi_disassociate(void *priv, const u8 *addr, int reason_code)
1661 {
1662         struct wpa_driver_madwifi_data *drv = priv;
1663         struct ieee80211req_mlme mlme;
1664
1665         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1666         mlme.im_op = IEEE80211_MLME_DISASSOC;
1667         mlme.im_reason = reason_code;
1668         os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1669         return set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme), 1);
1670 }
1671
1672 static int
1673 wpa_driver_madwifi_associate(void *priv,
1674                              struct wpa_driver_associate_params *params)
1675 {
1676         struct wpa_driver_madwifi_data *drv = priv;
1677         struct ieee80211req_mlme mlme;
1678         int ret = 0, privacy = 1;
1679
1680         wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1681
1682         /*
1683          * NB: Don't need to set the freq or cipher-related state as
1684          *     this is implied by the bssid which is used to locate
1685          *     the scanned node state which holds it.  The ssid is
1686          *     needed to disambiguate an AP that broadcasts multiple
1687          *     ssid's but uses the same bssid.
1688          */
1689         /* XXX error handling is wrong but unclear what to do... */
1690         if (wpa_driver_madwifi_set_wpa_ie(drv, params->wpa_ie,
1691                                           params->wpa_ie_len) < 0)
1692                 ret = -1;
1693
1694         if (params->pairwise_suite == CIPHER_NONE &&
1695             params->group_suite == CIPHER_NONE &&
1696             params->key_mgmt_suite == KEY_MGMT_NONE &&
1697             params->wpa_ie_len == 0)
1698                 privacy = 0;
1699
1700         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, privacy, 1) < 0)
1701                 ret = -1;
1702
1703         if (params->wpa_ie_len &&
1704             set80211param(drv, IEEE80211_PARAM_WPA,
1705                           params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1, 1) < 0)
1706                 ret = -1;
1707
1708         if (params->bssid == NULL) {
1709                 /* ap_scan=2 mode - driver takes care of AP selection and
1710                  * roaming */
1711                 /* FIX: this does not seem to work; would probably need to
1712                  * change something in the driver */
1713                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0)
1714                         ret = -1;
1715
1716                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1717                                              params->ssid_len) < 0)
1718                         ret = -1;
1719         } else {
1720                 if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0)
1721                         ret = -1;
1722                 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
1723                                              params->ssid_len) < 0)
1724                         ret = -1;
1725                 os_memset(&mlme, 0, sizeof(mlme));
1726                 mlme.im_op = IEEE80211_MLME_ASSOC;
1727                 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1728                 if (set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
1729                                  sizeof(mlme), 1) < 0) {
1730                         wpa_printf(MSG_DEBUG, "%s: SETMLME[ASSOC] failed",
1731                                    __func__);
1732                         ret = -1;
1733                 }
1734         }
1735
1736         return ret;
1737 }
1738
1739 static int
1740 wpa_driver_madwifi_set_auth_alg(void *priv, int auth_alg)
1741 {
1742         struct wpa_driver_madwifi_data *drv = priv;
1743         int authmode;
1744
1745         if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1746             (auth_alg & AUTH_ALG_SHARED_KEY))
1747                 authmode = IEEE80211_AUTH_AUTO;
1748         else if (auth_alg & AUTH_ALG_SHARED_KEY)
1749                 authmode = IEEE80211_AUTH_SHARED;
1750         else
1751                 authmode = IEEE80211_AUTH_OPEN;
1752
1753         return set80211param(drv, IEEE80211_PARAM_AUTHMODE, authmode, 1);
1754 }
1755
1756 static int
1757 wpa_driver_madwifi_scan(void *priv, const u8 *ssid, size_t ssid_len)
1758 {
1759         struct wpa_driver_madwifi_data *drv = priv;
1760         struct iwreq iwr;
1761         int ret = 0;
1762
1763         os_memset(&iwr, 0, sizeof(iwr));
1764         os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1765
1766         /* set desired ssid before scan */
1767         /* FIX: scan should not break the current association, so using
1768          * set_ssid may not be the best way of doing this.. */
1769         if (wpa_driver_wext_set_ssid(drv->wext, ssid, ssid_len) < 0)
1770                 ret = -1;
1771
1772         if (ioctl(drv->sock, SIOCSIWSCAN, &iwr) < 0) {
1773                 perror("ioctl[SIOCSIWSCAN]");
1774                 ret = -1;
1775         }
1776
1777         /*
1778          * madwifi delivers a scan complete event so no need to poll, but
1779          * register a backup timeout anyway to make sure that we recover even
1780          * if the driver does not send this event for any reason. This timeout
1781          * will only be used if the event is not delivered (event handler will
1782          * cancel the timeout).
1783          */
1784         eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
1785                              drv->ctx);
1786         eloop_register_timeout(30, 0, wpa_driver_wext_scan_timeout, drv->wext,
1787                                drv->ctx);
1788
1789         return ret;
1790 }
1791
1792 static int wpa_driver_madwifi_get_bssid(void *priv, u8 *bssid)
1793 {
1794         struct wpa_driver_madwifi_data *drv = priv;
1795         return wpa_driver_wext_get_bssid(drv->wext, bssid);
1796 }
1797
1798
1799 static int wpa_driver_madwifi_get_ssid(void *priv, u8 *ssid)
1800 {
1801         struct wpa_driver_madwifi_data *drv = priv;
1802         return wpa_driver_wext_get_ssid(drv->wext, ssid);
1803 }
1804
1805
1806 static struct wpa_scan_results *
1807 wpa_driver_madwifi_get_scan_results(void *priv)
1808 {
1809         struct wpa_driver_madwifi_data *drv = priv;
1810         return wpa_driver_wext_get_scan_results(drv->wext);
1811 }
1812
1813
1814 static int wpa_driver_madwifi_set_operstate(void *priv, int state)
1815 {
1816         struct wpa_driver_madwifi_data *drv = priv;
1817         return wpa_driver_wext_set_operstate(drv->wext, state);
1818 }
1819
1820
1821 static int wpa_driver_madwifi_set_probe_req_ie(void *priv, const u8 *ies,
1822                                                size_t ies_len)
1823 {
1824         struct ieee80211req_getset_appiebuf *probe_req_ie;
1825         int ret;
1826
1827         probe_req_ie = os_malloc(sizeof(*probe_req_ie) + ies_len);
1828         if (probe_req_ie == NULL)
1829                 return -1;
1830
1831         probe_req_ie->app_frmtype = IEEE80211_APPIE_FRAME_PROBE_REQ;
1832         probe_req_ie->app_buflen = ies_len;
1833         os_memcpy(probe_req_ie->app_buf, ies, ies_len);
1834
1835         ret = set80211priv(priv, IEEE80211_IOCTL_SET_APPIEBUF, probe_req_ie,
1836                            sizeof(struct ieee80211req_getset_appiebuf) +
1837                            ies_len, 1);
1838
1839         os_free(probe_req_ie);
1840
1841         return ret;
1842 }
1843
1844
1845 static void * wpa_driver_madwifi_init(void *ctx, const char *ifname)
1846 {
1847         struct wpa_driver_madwifi_data *drv;
1848
1849         drv = os_zalloc(sizeof(*drv));
1850         if (drv == NULL)
1851                 return NULL;
1852         drv->wext = wpa_driver_wext_init(ctx, ifname);
1853         if (drv->wext == NULL)
1854                 goto fail;
1855
1856         drv->ctx = ctx;
1857         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1858         drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1859         if (drv->sock < 0)
1860                 goto fail2;
1861
1862         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 2, 1) < 0) {
1863                 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1864                            "roaming", __FUNCTION__);
1865                 goto fail3;
1866         }
1867
1868         if (set80211param(drv, IEEE80211_PARAM_WPA, 3, 1) < 0) {
1869                 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support",
1870                            __FUNCTION__);
1871                 goto fail3;
1872         }
1873
1874         return drv;
1875
1876 fail3:
1877         close(drv->sock);
1878 fail2:
1879         wpa_driver_wext_deinit(drv->wext);
1880 fail:
1881         os_free(drv);
1882         return NULL;
1883 }
1884
1885
1886 static void wpa_driver_madwifi_deinit(void *priv)
1887 {
1888         struct wpa_driver_madwifi_data *drv = priv;
1889
1890         if (wpa_driver_madwifi_set_wpa_ie(drv, NULL, 0) < 0) {
1891                 wpa_printf(MSG_DEBUG, "%s: failed to clear WPA IE",
1892                            __FUNCTION__);
1893         }
1894         if (set80211param(drv, IEEE80211_PARAM_ROAMING, 0, 1) < 0) {
1895                 wpa_printf(MSG_DEBUG, "%s: failed to enable driver-based "
1896                            "roaming", __FUNCTION__);
1897         }
1898         if (set80211param(drv, IEEE80211_PARAM_PRIVACY, 0, 1) < 0) {
1899                 wpa_printf(MSG_DEBUG, "%s: failed to disable forced Privacy "
1900                            "flag", __FUNCTION__);
1901         }
1902         if (set80211param(drv, IEEE80211_PARAM_WPA, 0, 1) < 0) {
1903                 wpa_printf(MSG_DEBUG, "%s: failed to disable WPA",
1904                            __FUNCTION__);
1905         }
1906
1907         wpa_driver_wext_deinit(drv->wext);
1908
1909         close(drv->sock);
1910         os_free(drv);
1911 }
1912
1913 #endif /* HOSTAPD */
1914
1915
1916 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1917         .name                   = "madwifi",
1918         .desc                   = "MADWIFI 802.11 support (Atheros, etc.)",
1919         .set_key                = wpa_driver_madwifi_set_key,
1920 #ifdef HOSTAPD
1921         .hapd_init              = madwifi_init,
1922         .hapd_deinit            = madwifi_deinit,
1923         .set_ieee8021x          = madwifi_set_ieee8021x,
1924         .set_privacy            = madwifi_set_privacy,
1925         .get_seqnum             = madwifi_get_seqnum,
1926         .flush                  = madwifi_flush,
1927         .set_generic_elem       = madwifi_set_opt_ie,
1928         .sta_set_flags          = madwifi_sta_set_flags,
1929         .read_sta_data          = madwifi_read_sta_driver_data,
1930         .hapd_send_eapol        = madwifi_send_eapol,
1931         .sta_disassoc           = madwifi_sta_disassoc,
1932         .sta_deauth             = madwifi_sta_deauth,
1933         .hapd_set_ssid          = madwifi_set_ssid,
1934         .hapd_get_ssid          = madwifi_get_ssid,
1935         .hapd_set_countermeasures       = madwifi_set_countermeasures,
1936         .sta_clear_stats        = madwifi_sta_clear_stats,
1937         .commit                 = madwifi_commit,
1938         .set_wps_beacon_ie      = madwifi_set_wps_beacon_ie,
1939         .set_wps_probe_resp_ie  = madwifi_set_wps_probe_resp_ie,
1940 #else /* HOSTAPD */
1941         .get_bssid              = wpa_driver_madwifi_get_bssid,
1942         .get_ssid               = wpa_driver_madwifi_get_ssid,
1943         .init                   = wpa_driver_madwifi_init,
1944         .deinit                 = wpa_driver_madwifi_deinit,
1945         .set_countermeasures    = wpa_driver_madwifi_set_countermeasures,
1946         .set_drop_unencrypted   = wpa_driver_madwifi_set_drop_unencrypted,
1947         .scan                   = wpa_driver_madwifi_scan,
1948         .get_scan_results2      = wpa_driver_madwifi_get_scan_results,
1949         .deauthenticate         = wpa_driver_madwifi_deauthenticate,
1950         .disassociate           = wpa_driver_madwifi_disassociate,
1951         .associate              = wpa_driver_madwifi_associate,
1952         .set_auth_alg           = wpa_driver_madwifi_set_auth_alg,
1953         .set_operstate          = wpa_driver_madwifi_set_operstate,
1954         .set_probe_req_ie       = wpa_driver_madwifi_set_probe_req_ie,
1955 #endif /* HOSTAPD */
1956 };