src/drivers/driver_atheros.c

   1 /*
   2  * hostapd / Driver interaction with Atheros driver
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, Video54 Technologies
   5  * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
   6  * Copyright (c) 2009, Atheros Communications
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * Alternatively, this software may be distributed under the terms of BSD
  13  * license.
  14  *
  15  * See README and COPYING for more details.
  16  */
  17
  18 #include "includes.h"
  19 #include <net/if.h>
  20 #include <sys/ioctl.h>
  21
  22 #include "common.h"
  23 #ifndef _BYTE_ORDER
  24 #ifdef WORDS_BIGENDIAN
  25 #define _BYTE_ORDER _BIG_ENDIAN
  26 #else
  27 #define _BYTE_ORDER _LITTLE_ENDIAN
  28 #endif
  29 #endif /* _BYTE_ORDER */
  30
  31 /*
  32  * Note, the ATH_WPS_IE setting must match with the driver build.. If the
  33  * driver does not include this, the IEEE80211_IOCTL_GETWPAIE ioctl will fail.
  34  */
  35 #define ATH_WPS_IE
  36
  37 #include "os/linux/include/ieee80211_external.h"
  38
  39
  40 #ifdef CONFIG_WPS
  41 #include <netpacket/packet.h>
  42
  43 #ifndef ETH_P_80211_RAW
  44 #define ETH_P_80211_RAW 0x0019
  45 #endif
  46 #endif /* CONFIG_WPS */
  47
  48 #include "wireless_copy.h"
  49
  50 #include "driver.h"
  51 #include "eloop.h"
  52 #include "priv_netlink.h"
  53 #include "l2_packet/l2_packet.h"
  54 #include "common/ieee802_11_defs.h"
  55 #include "netlink.h"
  56 #include "linux_ioctl.h"
  57
  58
  59 struct madwifi_driver_data {
  60         struct hostapd_data *hapd;              /* back pointer */
  61
  62         char    iface[IFNAMSIZ + 1];
  63         int     ifindex;
  64         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  65         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  66         int     ioctl_sock;                     /* socket for ioctl() use */
  67         struct netlink_data *netlink;
  68         int     we_version;
  69         u8      acct_mac[ETH_ALEN];
  70         struct hostap_sta_driver_data acct_data;
  71
  72         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  73 };
  74
  75 static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
  76                               int reason_code);
  77 static int madwifi_set_privacy(void *priv, int enabled);
  78
  79 static const char * athr_get_ioctl_name(int op)
  80 {
  81         switch (op) {
  82         case IEEE80211_IOCTL_SETPARAM:
  83                 return "SETPARAM";
  84         case IEEE80211_IOCTL_GETPARAM:
  85                 return "GETPARAM";
  86         case IEEE80211_IOCTL_SETKEY:
  87                 return "SETKEY";
  88         case IEEE80211_IOCTL_SETWMMPARAMS:
  89                 return "SETWMMPARAMS";
  90         case IEEE80211_IOCTL_DELKEY:
  91                 return "DELKEY";
  92         case IEEE80211_IOCTL_GETWMMPARAMS:
  93                 return "GETWMMPARAMS";
  94         case IEEE80211_IOCTL_SETMLME:
  95                 return "SETMLME";
  96         case IEEE80211_IOCTL_GETCHANINFO:
  97                 return "GETCHANINFO";
  98         case IEEE80211_IOCTL_SETOPTIE:
  99                 return "SETOPTIE";
 100         case IEEE80211_IOCTL_GETOPTIE:
 101                 return "GETOPTIE";
 102         case IEEE80211_IOCTL_ADDMAC:
 103                 return "ADDMAC";
 104         case IEEE80211_IOCTL_DELMAC:
 105                 return "DELMAC";
 106         case IEEE80211_IOCTL_GETCHANLIST:
 107                 return "GETCHANLIST";
 108         case IEEE80211_IOCTL_SETCHANLIST:
 109                 return "SETCHANLIST";
 110         case IEEE80211_IOCTL_KICKMAC:
 111                 return "KICKMAC";
 112         case IEEE80211_IOCTL_CHANSWITCH:
 113                 return "CHANSWITCH";
 114         case IEEE80211_IOCTL_GETMODE:
 115                 return "GETMODE";
 116         case IEEE80211_IOCTL_SETMODE:
 117                 return "SETMODE";
 118         case IEEE80211_IOCTL_GET_APPIEBUF:
 119                 return "GET_APPIEBUF";
 120         case IEEE80211_IOCTL_SET_APPIEBUF:
 121                 return "SET_APPIEBUF";
 122         case IEEE80211_IOCTL_SET_ACPARAMS:
 123                 return "SET_ACPARAMS";
 124         case IEEE80211_IOCTL_FILTERFRAME:
 125                 return "FILTERFRAME";
 126         case IEEE80211_IOCTL_SET_RTPARAMS:
 127                 return "SET_RTPARAMS";
 128         case IEEE80211_IOCTL_SENDADDBA:
 129                 return "SENDADDBA";
 130         case IEEE80211_IOCTL_GETADDBASTATUS:
 131                 return "GETADDBASTATUS";
 132         case IEEE80211_IOCTL_SENDDELBA:
 133                 return "SENDDELBA";
 134         case IEEE80211_IOCTL_SET_MEDENYENTRY:
 135                 return "SET_MEDENYENTRY";
 136         case IEEE80211_IOCTL_SET_ADDBARESP:
 137                 return "SET_ADDBARESP";
 138         case IEEE80211_IOCTL_GET_MACADDR:
 139                 return "GET_MACADDR";
 140         case IEEE80211_IOCTL_SET_HBRPARAMS:
 141                 return "SET_HBRPARAMS";
 142         case IEEE80211_IOCTL_SET_RXTIMEOUT:
 143                 return "SET_RXTIMEOUT";
 144         case IEEE80211_IOCTL_STA_STATS:
 145                 return "STA_STATS";
 146         case IEEE80211_IOCTL_GETWPAIE:
 147                 return "GETWPAIE";
 148         default:
 149                 return "??";
 150         }
 151 }
 152
 153
 154 static const char * athr_get_param_name(int op)
 155 {
 156         switch (op) {
 157         case IEEE80211_IOC_MCASTCIPHER:
 158                 return "MCASTCIPHER";
 159         case IEEE80211_PARAM_MCASTKEYLEN:
 160                 return "MCASTKEYLEN";
 161         case IEEE80211_PARAM_UCASTCIPHERS:
 162                 return "UCASTCIPHERS";
 163         case IEEE80211_PARAM_KEYMGTALGS:
 164                 return "KEYMGTALGS";
 165         case IEEE80211_PARAM_RSNCAPS:
 166                 return "RSNCAPS";
 167         case IEEE80211_PARAM_WPA:
 168                 return "WPA";
 169         case IEEE80211_PARAM_AUTHMODE:
 170                 return "AUTHMODE";
 171         case IEEE80211_PARAM_PRIVACY:
 172                 return "PRIVACY";
 173         case IEEE80211_PARAM_COUNTERMEASURES:
 174                 return "COUNTERMEASURES";
 175         default:
 176                 return "??";
 177         }
 178 }
 179
 180
 181 static int
 182 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
 183 {
 184         struct iwreq iwr;
 185         int do_inline = len < IFNAMSIZ;
 186
 187         /* Certain ioctls must use the non-inlined method */
 188         if (op == IEEE80211_IOCTL_SET_APPIEBUF ||
 189             op == IEEE80211_IOCTL_FILTERFRAME)
 190                 do_inline = 0;
 191
 192         memset(&iwr, 0, sizeof(iwr));
 193         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 194         if (do_inline) {
 195                 /*
 196                  * Argument data fits inline; put it there.
 197                  */
 198                 memcpy(iwr.u.name, data, len);
 199         } else {
 200                 /*
 201                  * Argument data too big for inline transfer; setup a
 202                  * parameter block instead; the kernel will transfer
 203                  * the data for the driver.
 204                  */
 205                 iwr.u.data.pointer = data;
 206                 iwr.u.data.length = len;
 207         }
 208
 209         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 210                 wpa_printf(MSG_DEBUG, "atheros: %s: %s: ioctl op=0x%x "
 211                            "(%s) len=%d failed: %d (%s)",
 212                            __func__, drv->iface, op,
 213                            athr_get_ioctl_name(op),
 214                            len, errno, strerror(errno));
 215                 return -1;
 216         }
 217         return 0;
 218 }
 219
 220 static int
 221 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 222 {
 223         struct iwreq iwr;
 224
 225         memset(&iwr, 0, sizeof(iwr));
 226         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 227         iwr.u.mode = op;
 228         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 229
 230         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 231                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 232                 wpa_printf(MSG_DEBUG, "%s: %s: Failed to set parameter (op %d "
 233                            "(%s) arg %d)", __func__, drv->iface, op,
 234                            athr_get_param_name(op), arg);
 235                 return -1;
 236         }
 237         return 0;
 238 }
 239
 240 #ifndef CONFIG_NO_STDOUT_DEBUG
 241 static const char *
 242 ether_sprintf(const u8 *addr)
 243 {
 244         static char buf[sizeof(MACSTR)];
 245
 246         if (addr != NULL)
 247                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 248         else
 249                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 250         return buf;
 251 }
 252 #endif /* CONFIG_NO_STDOUT_DEBUG */
 253
 254 /*
 255  * Configure WPA parameters.
 256  */
 257 static int
 258 madwifi_configure_wpa(struct madwifi_driver_data *drv,
 259                       struct wpa_bss_params *params)
 260 {
 261         int v;
 262
 263         switch (params->wpa_group) {
 264         case WPA_CIPHER_CCMP:
 265                 v = IEEE80211_CIPHER_AES_CCM;
 266                 break;
 267         case WPA_CIPHER_TKIP:
 268                 v = IEEE80211_CIPHER_TKIP;
 269                 break;
 270         case WPA_CIPHER_WEP104:
 271                 v = IEEE80211_CIPHER_WEP;
 272                 break;
 273         case WPA_CIPHER_WEP40:
 274                 v = IEEE80211_CIPHER_WEP;
 275                 break;
 276         case WPA_CIPHER_NONE:
 277                 v = IEEE80211_CIPHER_NONE;
 278                 break;
 279         default:
 280                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 281                            params->wpa_group);
 282                 return -1;
 283         }
 284         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 285         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 286                 printf("Unable to set group key cipher to %u\n", v);
 287                 return -1;
 288         }
 289         if (v == IEEE80211_CIPHER_WEP) {
 290                 /* key length is done only for specific ciphers */
 291                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 292                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 293                         printf("Unable to set group key length to %u\n", v);
 294                         return -1;
 295                 }
 296         }
 297
 298         v = 0;
 299         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 300                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 301         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 302                 v |= 1<<IEEE80211_CIPHER_TKIP;
 303         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 304                 v |= 1<<IEEE80211_CIPHER_NONE;
 305         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 306         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 307                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 308                 return -1;
 309         }
 310
 311         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 312                    __func__, params->wpa_key_mgmt);
 313         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS,
 314                           params->wpa_key_mgmt)) {
 315                 printf("Unable to set key management algorithms to 0x%x\n",
 316                         params->wpa_key_mgmt);
 317                 return -1;
 318         }
 319
 320         v = 0;
 321         if (params->rsn_preauth)
 322                 v |= BIT(0);
 323         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 324                    __func__, params->rsn_preauth);
 325         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 326                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 327                 return -1;
 328         }
 329
 330         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, params->wpa);
 331         if (set80211param(drv, IEEE80211_PARAM_WPA, params->wpa)) {
 332                 printf("Unable to set WPA to %u\n", params->wpa);
 333                 return -1;
 334         }
 335         return 0;
 336 }
 337
 338 static int
 339 madwifi_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 340 {
 341         struct madwifi_driver_data *drv = priv;
 342
 343         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 344
 345         if (!params->enabled) {
 346                 /* XXX restore state */
 347                 if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 348                                   IEEE80211_AUTH_AUTO) < 0)
 349                         return -1;
 350                 /* IEEE80211_AUTH_AUTO ends up enabling Privacy; clear that */
 351                 return madwifi_set_privacy(drv, 0);
 352         }
 353         if (!params->wpa && !params->ieee802_1x) {
 354                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 355                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 356                 return -1;
 357         }
 358         if (params->wpa && madwifi_configure_wpa(drv, params) != 0) {
 359                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 360                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 361                 return -1;
 362         }
 363         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 364                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 365                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 366                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 367                 return -1;
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int
 374 madwifi_set_privacy(void *priv, int enabled)
 375 {
 376         struct madwifi_driver_data *drv = priv;
 377
 378         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 379
 380         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 381 }
 382
 383 static int
 384 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 385 {
 386         struct madwifi_driver_data *drv = priv;
 387         struct ieee80211req_mlme mlme;
 388         int ret;
 389
 390         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 391                    __func__, ether_sprintf(addr), authorized);
 392
 393         if (authorized)
 394                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 395         else
 396                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 397         mlme.im_reason = 0;
 398         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 399         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 400         if (ret < 0) {
 401                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 402                            __func__, authorized ? "" : "un", MAC2STR(addr));
 403         }
 404
 405         return ret;
 406 }
 407
 408 static int
 409 madwifi_sta_set_flags(void *priv, const u8 *addr,
 410                       int total_flags, int flags_or, int flags_and)
 411 {
 412         /* For now, only support setting Authorized flag */
 413         if (flags_or & WPA_STA_AUTHORIZED)
 414                 return madwifi_set_sta_authorized(priv, addr, 1);
 415         if (!(flags_and & WPA_STA_AUTHORIZED))
 416                 return madwifi_set_sta_authorized(priv, addr, 0);
 417         return 0;
 418 }
 419
 420 static int
 421 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 422 {
 423         struct madwifi_driver_data *drv = priv;
 424         struct ieee80211req_del_key wk;
 425         int ret;
 426
 427         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 428                    __func__, ether_sprintf(addr), key_idx);
 429
 430         memset(&wk, 0, sizeof(wk));
 431         if (addr != NULL) {
 432                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 433                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 434         } else {
 435                 wk.idk_keyix = key_idx;
 436         }
 437
 438         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 439         if (ret < 0) {
 440                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 441                            " key_idx %d)", __func__, ether_sprintf(addr),
 442                            key_idx);
 443         }
 444
 445         return ret;
 446 }
 447
 448 static int
 449 madwifi_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 450                 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
 451                 size_t seq_len, const u8 *key, size_t key_len)
 452 {
 453         struct madwifi_driver_data *drv = priv;
 454         struct ieee80211req_key wk;
 455         u_int8_t cipher;
 456         int ret;
 457
 458         if (alg == WPA_ALG_NONE)
 459                 return madwifi_del_key(drv, addr, key_idx);
 460
 461         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 462                    __func__, alg, ether_sprintf(addr), key_idx);
 463
 464         switch (alg) {
 465         case WPA_ALG_WEP:
 466                 cipher = IEEE80211_CIPHER_WEP;
 467                 break;
 468         case WPA_ALG_TKIP:
 469                 cipher = IEEE80211_CIPHER_TKIP;
 470                 break;
 471         case WPA_ALG_CCMP:
 472                 cipher = IEEE80211_CIPHER_AES_CCM;
 473                 break;
 474         default:
 475                 printf("%s: unknown/unsupported algorithm %d\n",
 476                         __func__, alg);
 477                 return -1;
 478         }
 479
 480         if (key_len > sizeof(wk.ik_keydata)) {
 481                 printf("%s: key length %lu too big\n", __func__,
 482                        (unsigned long) key_len);
 483                 return -3;
 484         }
 485
 486         memset(&wk, 0, sizeof(wk));
 487         wk.ik_type = cipher;
 488         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 489         if (addr == NULL) {
 490                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 491                 wk.ik_keyix = key_idx;
 492                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 493         } else {
 494                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 495                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 496         }
 497         wk.ik_keylen = key_len;
 498         memcpy(wk.ik_keydata, key, key_len);
 499
 500         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 501         if (ret < 0) {
 502                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 503                            " key_idx %d alg %d key_len %lu set_tx %d)",
 504                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 505                            alg, (unsigned long) key_len, set_tx);
 506         }
 507
 508         return ret;
 509 }
 510
 511
 512 static int
 513 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 514                    u8 *seq)
 515 {
 516         struct madwifi_driver_data *drv = priv;
 517         struct ieee80211req_key wk;
 518
 519         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 520                    __func__, ether_sprintf(addr), idx);
 521
 522         memset(&wk, 0, sizeof(wk));
 523         if (addr == NULL)
 524                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 525         else
 526                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 527         wk.ik_keyix = idx;
 528
 529         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 530                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 531                            "(addr " MACSTR " key_idx %d)",
 532                            __func__, MAC2STR(wk.ik_macaddr), idx);
 533                 return -1;
 534         }
 535
 536 #ifdef WORDS_BIGENDIAN
 537         {
 538                 /*
 539                  * wk.ik_keytsc is in host byte order (big endian), need to
 540                  * swap it to match with the byte order used in WPA.
 541                  */
 542                 int i;
 543 #ifndef WPA_KEY_RSC_LEN
 544 #define WPA_KEY_RSC_LEN 8
 545 #endif
 546                 u8 tmp[WPA_KEY_RSC_LEN];
 547                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 548                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 549                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 550                 }
 551         }
 552 #else /* WORDS_BIGENDIAN */
 553         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 554 #endif /* WORDS_BIGENDIAN */
 555         return 0;
 556 }
 557
 558
 559 static int
 560 madwifi_flush(void *priv)
 561 {
 562         u8 allsta[IEEE80211_ADDR_LEN];
 563         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 564         return madwifi_sta_deauth(priv, NULL, allsta,
 565                                   IEEE80211_REASON_AUTH_LEAVE);
 566 }
 567
 568
 569 static int
 570 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 571                              const u8 *addr)
 572 {
 573         struct madwifi_driver_data *drv = priv;
 574         struct ieee80211req_sta_stats stats;
 575
 576         memset(data, 0, sizeof(*data));
 577
 578         /*
 579          * Fetch statistics for station from the system.
 580          */
 581         memset(&stats, 0, sizeof(stats));
 582         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 583         if (set80211priv(drv, IEEE80211_IOCTL_STA_STATS,
 584                          &stats, sizeof(stats))) {
 585                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 586                            MACSTR ")", __func__, MAC2STR(addr));
 587                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 588                         memcpy(data, &drv->acct_data, sizeof(*data));
 589                         return 0;
 590                 }
 591
 592                 printf("Failed to get station stats information element.\n");
 593                 return -1;
 594         }
 595
 596         data->rx_packets = stats.is_stats.ns_rx_data;
 597         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 598         data->tx_packets = stats.is_stats.ns_tx_data;
 599         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 600         return 0;
 601 }
 602
 603
 604 static int
 605 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 606 {
 607         struct madwifi_driver_data *drv = priv;
 608         struct ieee80211req_mlme mlme;
 609         int ret;
 610
 611         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 612
 613         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 614         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 615         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 616                            sizeof(mlme));
 617         if (ret < 0) {
 618                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 619                            MACSTR ")", __func__, MAC2STR(addr));
 620         }
 621
 622         return ret;
 623 }
 624
 625
 626 static int
 627 madwifi_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
 628 {
 629         /*
 630          * Do nothing; we setup parameters at startup that define the
 631          * contents of the beacon information element.
 632          */
 633         return 0;
 634 }
 635
 636 static int
 637 madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 638                    int reason_code)
 639 {
 640         struct madwifi_driver_data *drv = priv;
 641         struct ieee80211req_mlme mlme;
 642         int ret;
 643
 644         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 645                    __func__, ether_sprintf(addr), reason_code);
 646
 647         mlme.im_op = IEEE80211_MLME_DEAUTH;
 648         mlme.im_reason = reason_code;
 649         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 650         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 651         if (ret < 0) {
 652                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 653                            " reason %d)",
 654                            __func__, MAC2STR(addr), reason_code);
 655         }
 656
 657         return ret;
 658 }
 659
 660 static int
 661 madwifi_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 662                      int reason_code)
 663 {
 664         struct madwifi_driver_data *drv = priv;
 665         struct ieee80211req_mlme mlme;
 666         int ret;
 667
 668         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 669                    __func__, ether_sprintf(addr), reason_code);
 670
 671         mlme.im_op = IEEE80211_MLME_DISASSOC;
 672         mlme.im_reason = reason_code;
 673         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 674         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 675         if (ret < 0) {
 676                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 677                            MACSTR " reason %d)",
 678                            __func__, MAC2STR(addr), reason_code);
 679         }
 680
 681         return ret;
 682 }
 683
 684 #ifdef CONFIG_WPS
 685 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 686                                 size_t len)
 687 {
 688         struct madwifi_driver_data *drv = ctx;
 689         const struct ieee80211_mgmt *mgmt;
 690         u16 fc;
 691         union wpa_event_data event;
 692
 693         /* Send Probe Request information to WPS processing */
 694
 695         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 696                 return;
 697         mgmt = (const struct ieee80211_mgmt *) buf;
 698
 699         fc = le_to_host16(mgmt->frame_control);
 700         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 701             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 702                 return;
 703
 704         os_memset(&event, 0, sizeof(event));
 705         event.rx_probe_req.sa = mgmt->sa;
 706         event.rx_probe_req.ie = mgmt->u.probe_req.variable;
 707         event.rx_probe_req.ie_len =
 708                 len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 709         wpa_supplicant_event(drv->hapd, EVENT_RX_PROBE_REQ, &event);
 710 }
 711 #endif /* CONFIG_WPS */
 712
 713 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 714 {
 715         int ret = 0;
 716 #ifdef CONFIG_WPS
 717         struct ieee80211req_set_filter filt;
 718
 719         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 720         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 721
 722         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 723                            sizeof(struct ieee80211req_set_filter));
 724         if (ret)
 725                 return ret;
 726
 727         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 728                                        madwifi_raw_receive, drv, 1);
 729         if (drv->sock_raw == NULL)
 730                 return -1;
 731 #endif /* CONFIG_WPS */
 732         return ret;
 733 }
 734
 735 #ifdef CONFIG_WPS
 736 static int
 737 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 738 {
 739         struct madwifi_driver_data *drv = priv;
 740         u8 buf[500];
 741         struct ieee80211req_getset_appiebuf *beac_ie;
 742
 743         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 744                    (unsigned long) len);
 745
 746         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 747         beac_ie->app_frmtype = frametype;
 748         beac_ie->app_buflen = len;
 749         memcpy(&(beac_ie->app_buf[0]), ie, len);
 750
 751         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 752                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 753 }
 754
 755 static int
 756 madwifi_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
 757                       const struct wpabuf *proberesp)
 758 {
 759         if (madwifi_set_wps_ie(priv, beacon ? wpabuf_head(beacon) : NULL,
 760                                beacon ? wpabuf_len(beacon) : 0,
 761                                IEEE80211_APPIE_FRAME_BEACON))
 762                 return -1;
 763         return madwifi_set_wps_ie(priv,
 764                                   proberesp ? wpabuf_head(proberesp) : NULL,
 765                                   proberesp ? wpabuf_len(proberesp): 0,
 766                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 767 }
 768 #else /* CONFIG_WPS */
 769 #define madwifi_set_ap_wps_ie NULL
 770 #endif /* CONFIG_WPS */
 771
 772 static void
 773 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 774 {
 775         struct hostapd_data *hapd = drv->hapd;
 776         struct ieee80211req_wpaie ie;
 777         int ielen = 0;
 778         u8 *iebuf = NULL;
 779
 780         /*
 781          * Fetch negotiated WPA/RSN parameters from the system.
 782          */
 783         memset(&ie, 0, sizeof(ie));
 784         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 785         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 786                 /*
 787                  * See ATH_WPS_IE comment in the beginning of the file for a
 788                  * possible cause for the failure..
 789                  */
 790                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE: %s",
 791                            __func__, strerror(errno));
 792                 goto no_ie;
 793         }
 794         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 795                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 796         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 797                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 798         iebuf = ie.wpa_ie;
 799         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 800          * Assume the IE was not included if the IE type is unknown. */
 801         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 802                 iebuf[1] = 0;
 803         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 804                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 805                  * set. This is needed for WPA2. */
 806                 iebuf = ie.rsn_ie;
 807                 if (iebuf[0] != WLAN_EID_RSN)
 808                         iebuf[1] = 0;
 809         }
 810
 811         ielen = iebuf[1];
 812         if (ielen == 0)
 813                 iebuf = NULL;
 814         else
 815                 ielen += 2;
 816
 817 no_ie:
 818         drv_event_assoc(hapd, addr, iebuf, ielen);
 819
 820         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 821                 /* Cached accounting data is not valid anymore. */
 822                 memset(drv->acct_mac, 0, ETH_ALEN);
 823                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 824         }
 825 }
 826
 827 static void
 828 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 829                                        char *custom, char *end)
 830 {
 831         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 832
 833         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 834                 char *pos;
 835                 u8 addr[ETH_ALEN];
 836                 pos = strstr(custom, "addr=");
 837                 if (pos == NULL) {
 838                         wpa_printf(MSG_DEBUG,
 839                                    "MLME-MICHAELMICFAILURE.indication "
 840                                    "without sender address ignored");
 841                         return;
 842                 }
 843                 pos += 5;
 844                 if (hwaddr_aton(pos, addr) == 0) {
 845                         union wpa_event_data data;
 846                         os_memset(&data, 0, sizeof(data));
 847                         data.michael_mic_failure.unicast = 1;
 848                         data.michael_mic_failure.src = addr;
 849                         wpa_supplicant_event(drv->hapd,
 850                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 851                 } else {
 852                         wpa_printf(MSG_DEBUG,
 853                                    "MLME-MICHAELMICFAILURE.indication "
 854                                    "with invalid MAC address");
 855                 }
 856         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 857                 char *key, *value;
 858                 u32 val;
 859                 key = custom;
 860                 while ((key = strchr(key, '\n')) != NULL) {
 861                         key++;
 862                         value = strchr(key, '=');
 863                         if (value == NULL)
 864                                 continue;
 865                         *value++ = '\0';
 866                         val = strtoul(value, NULL, 10);
 867                         if (strcmp(key, "mac") == 0)
 868                                 hwaddr_aton(value, drv->acct_mac);
 869                         else if (strcmp(key, "rx_packets") == 0)
 870                                 drv->acct_data.rx_packets = val;
 871                         else if (strcmp(key, "tx_packets") == 0)
 872                                 drv->acct_data.tx_packets = val;
 873                         else if (strcmp(key, "rx_bytes") == 0)
 874                                 drv->acct_data.rx_bytes = val;
 875                         else if (strcmp(key, "tx_bytes") == 0)
 876                                 drv->acct_data.tx_bytes = val;
 877                         key = value;
 878                 }
 879 #ifdef CONFIG_WPS
 880         } else if (strncmp(custom, "PUSH-BUTTON.indication", 22) == 0) {
 881                 /* Some atheros kernels send push button as a wireless event */
 882                 /* PROBLEM! this event is received for ALL BSSs ...
 883                  * so all are enabled for WPS... ugh.
 884                  */
 885                 wpa_supplicant_event(drv->hapd, EVENT_WPS_BUTTON_PUSHED, NULL);
 886         } else if (strncmp(custom, "Manage.prob_req ", 16) == 0) {
 887                 /*
 888                  * Atheros driver uses a hack to pass Probe Request frames as a
 889                  * binary data in the custom wireless event. The old way (using
 890                  * packet sniffing) didn't work when bridging.
 891                  * Format: "Manage.prob_req <frame len>" | zero padding | frame
 892                  */
 893 #define WPS_FRAM_TAG_SIZE 30 /* hardcoded in driver */
 894                 int len = atoi(custom + 16);
 895                 if (len < 0 || custom + WPS_FRAM_TAG_SIZE + len > end) {
 896                         wpa_printf(MSG_DEBUG, "Invalid Manage.prob_req event "
 897                                    "length %d", len);
 898                         return;
 899                 }
 900                 madwifi_raw_receive(drv, NULL,
 901                                     (u8 *) custom + WPS_FRAM_TAG_SIZE, len);
 902 #endif /* CONFIG_WPS */
 903         }
 904 }
 905
 906 static void
 907 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 908                                 char *data, int len)
 909 {
 910         struct iw_event iwe_buf, *iwe = &iwe_buf;
 911         char *pos, *end, *custom, *buf;
 912
 913         pos = data;
 914         end = data + len;
 915
 916         while (pos + IW_EV_LCP_LEN <= end) {
 917                 /* Event data may be unaligned, so make a local, aligned copy
 918                  * before processing. */
 919                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 920                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 921                            iwe->cmd, iwe->len);
 922                 if (iwe->len <= IW_EV_LCP_LEN)
 923                         return;
 924
 925                 custom = pos + IW_EV_POINT_LEN;
 926                 if (drv->we_version > 18 &&
 927                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 928                      iwe->cmd == IWEVASSOCREQIE ||
 929                      iwe->cmd == IWEVCUSTOM)) {
 930                         /* WE-19 removed the pointer from struct iw_point */
 931                         char *dpos = (char *) &iwe_buf.u.data.length;
 932                         int dlen = dpos - (char *) &iwe_buf;
 933                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 934                                sizeof(struct iw_event) - dlen);
 935                 } else {
 936                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 937                         custom += IW_EV_POINT_OFF;
 938                 }
 939
 940                 switch (iwe->cmd) {
 941                 case IWEVEXPIRED:
 942                         drv_event_disassoc(drv->hapd,
 943                                            (u8 *) iwe->u.addr.sa_data);
 944                         break;
 945                 case IWEVREGISTERED:
 946                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 947                         break;
 948                 case IWEVASSOCREQIE:
 949                         /* Driver hack.. Use IWEVASSOCREQIE to bypass
 950                          * IWEVCUSTOM size limitations. Need to handle this
 951                          * just like IWEVCUSTOM.
 952                          */
 953                 case IWEVCUSTOM:
 954                         if (custom + iwe->u.data.length > end)
 955                                 return;
 956                         buf = malloc(iwe->u.data.length + 1);
 957                         if (buf == NULL)
 958                                 return;         /* XXX */
 959                         memcpy(buf, custom, iwe->u.data.length);
 960                         buf[iwe->u.data.length] = '\0';
 961                         madwifi_wireless_event_wireless_custom(
 962                                 drv, buf, buf + iwe->u.data.length);
 963                         free(buf);
 964                         break;
 965                 }
 966
 967                 pos += iwe->len;
 968         }
 969 }
 970
 971
 972 static void
 973 madwifi_wireless_event_rtm_newlink(void *ctx,
 974                                    struct ifinfomsg *ifi, u8 *buf, size_t len)
 975 {
 976         struct madwifi_driver_data *drv = ctx;
 977         int attrlen, rta_len;
 978         struct rtattr *attr;
 979
 980         if (ifi->ifi_index != drv->ifindex)
 981                 return;
 982
 983         attrlen = len;
 984         attr = (struct rtattr *) buf;
 985
 986         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 987         while (RTA_OK(attr, attrlen)) {
 988                 if (attr->rta_type == IFLA_WIRELESS) {
 989                         madwifi_wireless_event_wireless(
 990                                 drv, ((char *) attr) + rta_len,
 991                                 attr->rta_len - rta_len);
 992                 }
 993                 attr = RTA_NEXT(attr, attrlen);
 994         }
 995 }
 996
 997
 998 static int
 999 madwifi_get_we_version(struct madwifi_driver_data *drv)
1000 {
1001         struct iw_range *range;
1002         struct iwreq iwr;
1003         int minlen;
1004         size_t buflen;
1005
1006         drv->we_version = 0;
1007
1008         /*
1009          * Use larger buffer than struct iw_range in order to allow the
1010          * structure to grow in the future.
1011          */
1012         buflen = sizeof(struct iw_range) + 500;
1013         range = os_zalloc(buflen);
1014         if (range == NULL)
1015                 return -1;
1016
1017         memset(&iwr, 0, sizeof(iwr));
1018         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1019         iwr.u.data.pointer = (caddr_t) range;
1020         iwr.u.data.length = buflen;
1021
1022         minlen = ((char *) &range->enc_capa) - (char *) range +
1023                 sizeof(range->enc_capa);
1024
1025         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1026                 perror("ioctl[SIOCGIWRANGE]");
1027                 free(range);
1028                 return -1;
1029         } else if (iwr.u.data.length >= minlen &&
1030                    range->we_version_compiled >= 18) {
1031                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1032                            "WE(source)=%d enc_capa=0x%x",
1033                            range->we_version_compiled,
1034                            range->we_version_source,
1035                            range->enc_capa);
1036                 drv->we_version = range->we_version_compiled;
1037         }
1038
1039         free(range);
1040         return 0;
1041 }
1042
1043
1044 static int
1045 madwifi_wireless_event_init(struct madwifi_driver_data *drv)
1046 {
1047         struct netlink_config *cfg;
1048
1049         madwifi_get_we_version(drv);
1050
1051         cfg = os_zalloc(sizeof(*cfg));
1052         if (cfg == NULL)
1053                 return -1;
1054         cfg->ctx = drv;
1055         cfg->newlink_cb = madwifi_wireless_event_rtm_newlink;
1056         drv->netlink = netlink_init(cfg);
1057         if (drv->netlink == NULL) {
1058                 os_free(cfg);
1059                 return -1;
1060         }
1061
1062         return 0;
1063 }
1064
1065
1066 static int
1067 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1068                    int encrypt, const u8 *own_addr)
1069 {
1070         struct madwifi_driver_data *drv = priv;
1071         unsigned char buf[3000];
1072         unsigned char *bp = buf;
1073         struct l2_ethhdr *eth;
1074         size_t len;
1075         int status;
1076
1077         /*
1078          * Prepend the Ethernet header.  If the caller left us
1079          * space at the front we could just insert it but since
1080          * we don't know we copy to a local buffer.  Given the frequency
1081          * and size of frames this probably doesn't matter.
1082          */
1083         len = data_len + sizeof(struct l2_ethhdr);
1084         if (len > sizeof(buf)) {
1085                 bp = malloc(len);
1086                 if (bp == NULL) {
1087                         printf("EAPOL frame discarded, cannot malloc temp "
1088                                "buffer of size %lu!\n", (unsigned long) len);
1089                         return -1;
1090                 }
1091         }
1092         eth = (struct l2_ethhdr *) bp;
1093         memcpy(eth->h_dest, addr, ETH_ALEN);
1094         memcpy(eth->h_source, own_addr, ETH_ALEN);
1095         eth->h_proto = host_to_be16(ETH_P_EAPOL);
1096         memcpy(eth+1, data, data_len);
1097
1098         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1099
1100         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1101
1102         if (bp != buf)
1103                 free(bp);
1104         return status;
1105 }
1106
1107 static void
1108 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1109 {
1110         struct madwifi_driver_data *drv = ctx;
1111         drv_event_eapol_rx(drv->hapd, src_addr, buf + sizeof(struct l2_ethhdr),
1112                            len - sizeof(struct l2_ethhdr));
1113 }
1114
1115 static void *
1116 madwifi_init(struct hostapd_data *hapd, struct wpa_init_params *params)
1117 {
1118         struct madwifi_driver_data *drv;
1119         struct ifreq ifr;
1120         struct iwreq iwr;
1121         char brname[IFNAMSIZ];
1122
1123         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1124         if (drv == NULL) {
1125                 printf("Could not allocate memory for madwifi driver data\n");
1126                 return NULL;
1127         }
1128
1129         drv->hapd = hapd;
1130         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1131         if (drv->ioctl_sock < 0) {
1132                 perror("socket[PF_INET,SOCK_DGRAM]");
1133                 goto bad;
1134         }
1135         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
1136
1137         memset(&ifr, 0, sizeof(ifr));
1138         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1139         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1140                 perror("ioctl(SIOCGIFINDEX)");
1141                 goto bad;
1142         }
1143         drv->ifindex = ifr.ifr_ifindex;
1144
1145         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1146                                         handle_read, drv, 1);
1147         if (drv->sock_xmit == NULL)
1148                 goto bad;
1149         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
1150                 goto bad;
1151         if (params->bridge[0]) {
1152                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1153                            params->bridge[0]);
1154                 drv->sock_recv = l2_packet_init(params->bridge[0], NULL,
1155                                                 ETH_P_EAPOL, handle_read, drv,
1156                                                 1);
1157                 if (drv->sock_recv == NULL)
1158                         goto bad;
1159         } else if (linux_br_get(brname, drv->iface) == 0) {
1160                 wpa_printf(MSG_DEBUG, "Interface in bridge %s; configure for "
1161                            "EAPOL receive", brname);
1162                 drv->sock_recv = l2_packet_init(brname, NULL, ETH_P_EAPOL,
1163                                                 handle_read, drv, 1);
1164                 if (drv->sock_recv == NULL)
1165                         goto bad;
1166         } else
1167                 drv->sock_recv = drv->sock_xmit;
1168
1169         memset(&iwr, 0, sizeof(iwr));
1170         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1171
1172         iwr.u.mode = IW_MODE_MASTER;
1173
1174         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1175                 perror("ioctl[SIOCSIWMODE]");
1176                 printf("Could not set interface to master mode!\n");
1177                 goto bad;
1178         }
1179
1180         /* mark down during setup */
1181         linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
1182         madwifi_set_privacy(drv, 0); /* default to no privacy */
1183
1184         madwifi_receive_probe_req(drv);
1185
1186         if (madwifi_wireless_event_init(drv))
1187                 goto bad;
1188
1189         return drv;
1190 bad:
1191         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1192                 l2_packet_deinit(drv->sock_recv);
1193         if (drv->sock_xmit != NULL)
1194                 l2_packet_deinit(drv->sock_xmit);
1195         if (drv->ioctl_sock >= 0)
1196                 close(drv->ioctl_sock);
1197         if (drv != NULL)
1198                 free(drv);
1199         return NULL;
1200 }
1201
1202
1203 static void
1204 madwifi_deinit(void *priv)
1205 {
1206         struct madwifi_driver_data *drv = priv;
1207
1208         netlink_deinit(drv->netlink);
1209         (void) linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
1210         if (drv->ioctl_sock >= 0)
1211                 close(drv->ioctl_sock);
1212         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1213                 l2_packet_deinit(drv->sock_recv);
1214         if (drv->sock_xmit != NULL)
1215                 l2_packet_deinit(drv->sock_xmit);
1216         if (drv->sock_raw)
1217                 l2_packet_deinit(drv->sock_raw);
1218         free(drv);
1219 }
1220
1221 static int
1222 madwifi_set_ssid(void *priv, const u8 *buf, int len)
1223 {
1224         struct madwifi_driver_data *drv = priv;
1225         struct iwreq iwr;
1226
1227         memset(&iwr, 0, sizeof(iwr));
1228         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1229         iwr.u.essid.flags = 1; /* SSID active */
1230         iwr.u.essid.pointer = (caddr_t) buf;
1231         iwr.u.essid.length = len + 1;
1232
1233         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1234                 perror("ioctl[SIOCSIWESSID]");
1235                 printf("len=%d\n", len);
1236                 return -1;
1237         }
1238         return 0;
1239 }
1240
1241 static int
1242 madwifi_get_ssid(void *priv, u8 *buf, int len)
1243 {
1244         struct madwifi_driver_data *drv = priv;
1245         struct iwreq iwr;
1246         int ret = 0;
1247
1248         memset(&iwr, 0, sizeof(iwr));
1249         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1250         iwr.u.essid.pointer = (caddr_t) buf;
1251         iwr.u.essid.length = len;
1252
1253         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1254                 perror("ioctl[SIOCGIWESSID]");
1255                 ret = -1;
1256         } else
1257                 ret = iwr.u.essid.length;
1258
1259         return ret;
1260 }
1261
1262 static int
1263 madwifi_set_countermeasures(void *priv, int enabled)
1264 {
1265         struct madwifi_driver_data *drv = priv;
1266         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1267         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1268 }
1269
1270 static int
1271 madwifi_commit(void *priv)
1272 {
1273         struct madwifi_driver_data *drv = priv;
1274         return linux_set_iface_flags(drv->ioctl_sock, drv->iface, 1);
1275 }
1276
1277 const struct wpa_driver_ops wpa_driver_atheros_ops = {
1278         .name                   = "atheros",
1279         .hapd_init              = madwifi_init,
1280         .hapd_deinit            = madwifi_deinit,
1281         .set_ieee8021x          = madwifi_set_ieee8021x,
1282         .set_privacy            = madwifi_set_privacy,
1283         .set_key                = madwifi_set_key,
1284         .get_seqnum             = madwifi_get_seqnum,
1285         .flush                  = madwifi_flush,
1286         .set_generic_elem       = madwifi_set_opt_ie,
1287         .sta_set_flags          = madwifi_sta_set_flags,
1288         .read_sta_data          = madwifi_read_sta_driver_data,
1289         .hapd_send_eapol        = madwifi_send_eapol,
1290         .sta_disassoc           = madwifi_sta_disassoc,
1291         .sta_deauth             = madwifi_sta_deauth,
1292         .hapd_set_ssid          = madwifi_set_ssid,
1293         .hapd_get_ssid          = madwifi_get_ssid,
1294         .set_countermeasures    = madwifi_set_countermeasures,
1295         .sta_clear_stats        = madwifi_sta_clear_stats,
1296         .commit                 = madwifi_commit,
1297         .set_ap_wps_ie          = madwifi_set_ap_wps_ie,
1298 };