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* WPA Supplicant - driver interaction with Linux ipw2100/2200 drivers
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* Copyright (c) 2005 Zhu Yi <yi.zhu@intel.com>
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* Copyright (c) 2004 Lubomir Gelo <lgelo@cnc.sk>
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* Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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* Alternatively, this software may be distributed under the terms of BSD
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* See README and COPYING for more details.
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* Please note that ipw2100/2200 drivers change to use generic Linux wireless
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* extensions if the kernel includes support for WE-18 or newer (Linux 2.6.13
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* or newer). driver_wext.c should be used in those cases.
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#include <sys/ioctl.h>
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#include "wireless_copy.h"
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#include "driver_wext.h"
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struct wpa_driver_ipw_data {
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void *wext; /* private data for driver_wext */
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char ifname[IFNAMSIZ + 1];
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/* following definitions must be kept in sync with ipw2100.c and ipw2200.c */
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#define IPW_IOCTL_WPA_SUPPLICANT SIOCIWFIRSTPRIV+30
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#define IPW_CMD_SET_WPA_PARAM 1
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#define IPW_CMD_SET_WPA_IE 2
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#define IPW_CMD_SET_ENCRYPTION 3
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#define IPW_CMD_MLME 4
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#define IPW_PARAM_WPA_ENABLED 1
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#define IPW_PARAM_TKIP_COUNTERMEASURES 2
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#define IPW_PARAM_DROP_UNENCRYPTED 3
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#define IPW_PARAM_PRIVACY_INVOKED 4
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#define IPW_PARAM_AUTH_ALGS 5
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#define IPW_PARAM_IEEE_802_1X 6
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#define IPW_MLME_STA_DEAUTH 1
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#define IPW_MLME_STA_DISASSOC 2
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#define IPW_CRYPT_ERR_UNKNOWN_ALG 2
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#define IPW_CRYPT_ERR_UNKNOWN_ADDR 3
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#define IPW_CRYPT_ERR_CRYPT_INIT_FAILED 4
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#define IPW_CRYPT_ERR_KEY_SET_FAILED 5
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#define IPW_CRYPT_ERR_TX_KEY_SET_FAILED 6
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#define IPW_CRYPT_ERR_CARD_CONF_FAILED 7
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#define IPW_CRYPT_ALG_NAME_LEN 16
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u8 sta_addr[ETH_ALEN];
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u8 alg[IPW_CRYPT_ALG_NAME_LEN];
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/* end of ipw2100.c and ipw2200.c code */
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static int ipw_ioctl(struct wpa_driver_ipw_data *drv,
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struct ipw_param *param, int len, int show_err)
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os_memset(&iwr, 0, sizeof(iwr));
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os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
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iwr.u.data.pointer = (caddr_t) param;
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iwr.u.data.length = len;
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if (ioctl(drv->sock, IPW_IOCTL_WPA_SUPPLICANT, &iwr) < 0) {
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perror("ioctl[IPW_IOCTL_WPA_SUPPLICANT]");
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static void ipw_show_set_key_error(struct ipw_param *param)
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switch (param->u.crypt.err) {
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case IPW_CRYPT_ERR_UNKNOWN_ALG:
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wpa_printf(MSG_INFO, "Unknown algorithm '%s'.",
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wpa_printf(MSG_INFO, "You may need to load kernel module to "
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"register that algorithm.");
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wpa_printf(MSG_INFO, "E.g., 'modprobe ieee80211_crypt_wep' for"
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case IPW_CRYPT_ERR_UNKNOWN_ADDR:
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wpa_printf(MSG_INFO, "Unknown address " MACSTR ".",
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MAC2STR(param->sta_addr));
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case IPW_CRYPT_ERR_CRYPT_INIT_FAILED:
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wpa_printf(MSG_INFO, "Crypt algorithm initialization failed.");
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case IPW_CRYPT_ERR_KEY_SET_FAILED:
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wpa_printf(MSG_INFO, "Key setting failed.");
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case IPW_CRYPT_ERR_TX_KEY_SET_FAILED:
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wpa_printf(MSG_INFO, "TX key index setting failed.");
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case IPW_CRYPT_ERR_CARD_CONF_FAILED:
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wpa_printf(MSG_INFO, "Card configuration failed.");
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static int ipw_set_wpa_ie(struct wpa_driver_ipw_data *drv,
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const u8 *wpa_ie, size_t wpa_ie_len)
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struct ipw_param *param;
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size_t blen = sizeof(*param) + wpa_ie_len;
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param = os_zalloc(blen);
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param->cmd = IPW_CMD_SET_WPA_IE;
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param->u.wpa_ie.len = wpa_ie_len;
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os_memcpy(param->u.wpa_ie.data, wpa_ie, wpa_ie_len);
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ret = ipw_ioctl(drv, param, blen, 1);
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static int ipw_set_wpa_param(struct wpa_driver_ipw_data *drv, u8 name,
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struct ipw_param param;
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os_memset(¶m, 0, sizeof(param));
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param.cmd = IPW_CMD_SET_WPA_PARAM;
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param.u.wpa_param.name = name;
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param.u.wpa_param.value = value;
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return ipw_ioctl(drv, ¶m, sizeof(param), 1);
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static int ipw_mlme(struct wpa_driver_ipw_data *drv, const u8 *addr,
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struct ipw_param param;
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os_memset(¶m, 0, sizeof(param));
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os_memcpy(param.sta_addr, addr, ETH_ALEN);
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param.cmd = IPW_CMD_MLME;
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param.u.mlme.command = cmd;
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param.u.mlme.reason_code = reason;
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return ipw_ioctl(drv, ¶m, sizeof(param), 1);
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static int wpa_driver_ipw_set_wpa(void *priv, int enabled)
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struct wpa_driver_ipw_data *drv = priv;
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
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if (!enabled && ipw_set_wpa_ie(drv, NULL, 0) < 0)
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if (ipw_set_wpa_param(drv, IPW_PARAM_WPA_ENABLED, enabled) < 0)
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static int wpa_driver_ipw_set_key(void *priv, wpa_alg alg,
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const u8 *addr, int key_idx, int set_tx,
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const u8 *seq, size_t seq_len,
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const u8 *key, size_t key_len)
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struct wpa_driver_ipw_data *drv = priv;
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struct ipw_param *param;
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wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
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"key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
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(unsigned long) seq_len, (unsigned long) key_len);
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blen = sizeof(*param) + key_len;
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buf = os_zalloc(blen);
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param = (struct ipw_param *) buf;
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param->cmd = IPW_CMD_SET_ENCRYPTION;
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os_memset(param->sta_addr, 0xff, ETH_ALEN);
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os_strlcpy((char *) param->u.crypt.alg, alg_name,
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IPW_CRYPT_ALG_NAME_LEN);
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param->u.crypt.set_tx = set_tx ? 1 : 0;
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param->u.crypt.idx = key_idx;
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os_memcpy(param->u.crypt.seq, seq, seq_len);
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param->u.crypt.key_len = key_len;
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os_memcpy((u8 *) (param + 1), key, key_len);
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if (ipw_ioctl(drv, param, blen, 1)) {
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wpa_printf(MSG_WARNING, "Failed to set encryption.");
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ipw_show_set_key_error(param);
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static int wpa_driver_ipw_set_countermeasures(void *priv, int enabled)
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struct wpa_driver_ipw_data *drv = priv;
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
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return ipw_set_wpa_param(drv, IPW_PARAM_TKIP_COUNTERMEASURES,
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static int wpa_driver_ipw_set_drop_unencrypted(void *priv, int enabled)
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struct wpa_driver_ipw_data *drv = priv;
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wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
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return ipw_set_wpa_param(drv, IPW_PARAM_DROP_UNENCRYPTED,
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static int wpa_driver_ipw_deauthenticate(void *priv, const u8 *addr,
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struct wpa_driver_ipw_data *drv = priv;
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return ipw_mlme(drv, addr, IPW_MLME_STA_DEAUTH, reason_code);
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static int wpa_driver_ipw_disassociate(void *priv, const u8 *addr,
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struct wpa_driver_ipw_data *drv = priv;
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return ipw_mlme(drv, addr, IPW_MLME_STA_DISASSOC, reason_code);
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wpa_driver_ipw_associate(void *priv, struct wpa_driver_associate_params *params)
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struct wpa_driver_ipw_data *drv = priv;
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int unencrypted_eapol;
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if (ipw_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
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if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
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params->ssid_len) < 0)
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if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0)
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if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
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params->key_mgmt_suite == KEY_MGMT_PSK)
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unencrypted_eapol = 0;
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unencrypted_eapol = 1;
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if (ipw_set_wpa_param(drv, IPW_PARAM_IEEE_802_1X,
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unencrypted_eapol) < 0) {
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wpa_printf(MSG_DEBUG, "ipw: Failed to configure "
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"ieee_802_1x param");
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static int wpa_driver_ipw_set_auth_alg(void *priv, int auth_alg)
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struct wpa_driver_ipw_data *drv = priv;
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if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
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if (auth_alg & AUTH_ALG_SHARED_KEY)
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if (auth_alg & AUTH_ALG_LEAP)
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algs = 1; /* at least one algorithm should be set */
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wpa_printf(MSG_DEBUG, "%s: auth_alg=0x%x", __FUNCTION__, algs);
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return ipw_set_wpa_param(drv, IPW_PARAM_AUTH_ALGS, algs);
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static int wpa_driver_ipw_get_bssid(void *priv, u8 *bssid)
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struct wpa_driver_ipw_data *drv = priv;
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return wpa_driver_wext_get_bssid(drv->wext, bssid);
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static int wpa_driver_ipw_get_ssid(void *priv, u8 *ssid)
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struct wpa_driver_ipw_data *drv = priv;
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return wpa_driver_wext_get_ssid(drv->wext, ssid);
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static int wpa_driver_ipw_scan(void *priv, const u8 *ssid, size_t ssid_len)
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struct wpa_driver_ipw_data *drv = priv;
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return wpa_driver_wext_scan(drv->wext, ssid, ssid_len);
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static int wpa_driver_ipw_get_scan_results(void *priv,
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struct wpa_scan_result *results,
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struct wpa_driver_ipw_data *drv = priv;
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return wpa_driver_wext_get_scan_results(drv->wext, results, max_size);
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static int wpa_driver_ipw_set_operstate(void *priv, int state)
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struct wpa_driver_ipw_data *drv = priv;
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return wpa_driver_wext_set_operstate(drv->wext, state);
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static void * wpa_driver_ipw_init(void *ctx, const char *ifname)
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struct wpa_driver_ipw_data *drv;
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wpa_printf(MSG_DEBUG, "%s is called", __FUNCTION__);
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drv = os_zalloc(sizeof(*drv));
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drv->wext = wpa_driver_wext_init(ctx, ifname);
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if (drv->wext == NULL) {
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ver = wpa_driver_wext_get_version(drv->wext);
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wpa_printf(MSG_WARNING, "Linux wireless extensions version %d "
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wpa_printf(MSG_WARNING, "ipw2x00 driver uses driver_wext "
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"(-Dwext) instead of driver_ipw.");
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os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
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drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
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wpa_driver_wext_deinit(drv->wext);
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static void wpa_driver_ipw_deinit(void *priv)
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struct wpa_driver_ipw_data *drv = priv;
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wpa_driver_wext_deinit(drv->wext);
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const struct wpa_driver_ops wpa_driver_ipw_ops = {
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.desc = "Intel ipw2100/2200 driver (old; use wext with Linux 2.6.13 "
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.get_bssid = wpa_driver_ipw_get_bssid,
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.get_ssid = wpa_driver_ipw_get_ssid,
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.set_wpa = wpa_driver_ipw_set_wpa,
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.set_key = wpa_driver_ipw_set_key,
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.set_countermeasures = wpa_driver_ipw_set_countermeasures,
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.set_drop_unencrypted = wpa_driver_ipw_set_drop_unencrypted,
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.scan = wpa_driver_ipw_scan,
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.get_scan_results = wpa_driver_ipw_get_scan_results,
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.deauthenticate = wpa_driver_ipw_deauthenticate,
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.disassociate = wpa_driver_ipw_disassociate,
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.associate = wpa_driver_ipw_associate,
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.set_auth_alg = wpa_driver_ipw_set_auth_alg,
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.init = wpa_driver_ipw_init,
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.deinit = wpa_driver_ipw_deinit,
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.set_operstate = wpa_driver_ipw_set_operstate,
added
removed
src/drivers/driver_ipw.c
