driver_ipw.c - platform/external/wpa_supplicant - Git at Google

 /*
  * WPA Supplicant - driver interaction with Linux ipw2100/2200 drivers
  * Copyright (c) 2005 Zhu Yi <yi.zhu@intel.com>
  * Copyright (c) 2004 Lubomir Gelo <lgelo@cnc.sk>
  * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * Alternatively, this software may be distributed under the terms of BSD
  * license.
  *
  * See README and COPYING for more details.
  *
  * Please note that ipw2100/2200 drivers change to use generic Linux wireless
  * extensions if the kernel includes support for WE-18 or newer (Linux 2.6.13
  * or newer). driver_wext.c should be used in those cases.
  */

 #include "includes.h"
 #include <sys/ioctl.h>

 #include "wireless_copy.h"
 #include "common.h"
 #include "driver.h"
 #include "l2_packet.h"
 #include "driver_wext.h"
 #include "wpa_supplicant.h"

 struct wpa_driver_ipw_data {
 	void *wext; /* private data for driver_wext */
 	void *ctx;
 	char ifname[IFNAMSIZ + 1];
 	int sock;
 };

 /* following definitions must be kept in sync with ipw2100.c and ipw2200.c */

 #define IPW_IOCTL_WPA_SUPPLICANT		SIOCIWFIRSTPRIV+30

 #define IPW_CMD_SET_WPA_PARAM			1
 #define	IPW_CMD_SET_WPA_IE			2
 #define IPW_CMD_SET_ENCRYPTION			3
 #define IPW_CMD_MLME				4

 #define IPW_PARAM_WPA_ENABLED			1
 #define IPW_PARAM_TKIP_COUNTERMEASURES		2
 #define IPW_PARAM_DROP_UNENCRYPTED		3
 #define IPW_PARAM_PRIVACY_INVOKED		4
 #define IPW_PARAM_AUTH_ALGS			5
 #define IPW_PARAM_IEEE_802_1X			6

 #define IPW_MLME_STA_DEAUTH			1
 #define IPW_MLME_STA_DISASSOC			2

 #define IPW_CRYPT_ERR_UNKNOWN_ALG		2
 #define IPW_CRYPT_ERR_UNKNOWN_ADDR		3
 #define IPW_CRYPT_ERR_CRYPT_INIT_FAILED		4
 #define IPW_CRYPT_ERR_KEY_SET_FAILED		5
 #define IPW_CRYPT_ERR_TX_KEY_SET_FAILED		6
 #define IPW_CRYPT_ERR_CARD_CONF_FAILED		7

 #define	IPW_CRYPT_ALG_NAME_LEN			16

 struct ipw_param {
 	u32 cmd;
 	u8 sta_addr[ETH_ALEN];
         union {
 		struct {
 			u8 name;
 			u32 value;
 		} wpa_param;
 		struct {
 			u32 len;
 			u8 reserved[32];
 			u8 data[0];
 		} wpa_ie;
 	        struct{
 			u32 command;
     			u32 reason_code;
 		} mlme;
 		struct {
 			u8 alg[IPW_CRYPT_ALG_NAME_LEN];
 			u8 set_tx;
 			u32 err;
 			u8 idx;
 			u8 seq[8];
 			u16 key_len;
 			u8 key[0];
 		} crypt;

 	} u;
 };

 /* end of ipw2100.c and ipw2200.c code */

 static int ipw_ioctl(struct wpa_driver_ipw_data *drv,
 		     struct ipw_param *param, int len, int show_err)
 {
 	struct iwreq iwr;

 	os_memset(&iwr, 0, sizeof(iwr));
 	os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
 	iwr.u.data.pointer = (caddr_t) param;
 	iwr.u.data.length = len;

 	if (ioctl(drv->sock, IPW_IOCTL_WPA_SUPPLICANT, &iwr) < 0) {
 		int ret = errno;
 		if (show_err)
 			perror("ioctl[IPW_IOCTL_WPA_SUPPLICANT]");
 		return ret;
 	}

 	return 0;
 }


 static void ipw_show_set_key_error(struct ipw_param *param)
 {
 	switch (param->u.crypt.err) {
 	case IPW_CRYPT_ERR_UNKNOWN_ALG:
 		wpa_printf(MSG_INFO, "Unknown algorithm '%s'.",
 			   param->u.crypt.alg);
 		wpa_printf(MSG_INFO, "You may need to load kernel module to "
 			   "register that algorithm.");
 		wpa_printf(MSG_INFO, "E.g., 'modprobe ieee80211_crypt_wep' for"
 			   " WEP.");
 		break;
 	case IPW_CRYPT_ERR_UNKNOWN_ADDR:
 		wpa_printf(MSG_INFO, "Unknown address " MACSTR ".",
 			   MAC2STR(param->sta_addr));
 		break;
 	case IPW_CRYPT_ERR_CRYPT_INIT_FAILED:
 		wpa_printf(MSG_INFO, "Crypt algorithm initialization failed.");
 		break;
 	case IPW_CRYPT_ERR_KEY_SET_FAILED:
 		wpa_printf(MSG_INFO, "Key setting failed.");
 		break;
 	case IPW_CRYPT_ERR_TX_KEY_SET_FAILED:
 		wpa_printf(MSG_INFO, "TX key index setting failed.");
 		break;
 	case IPW_CRYPT_ERR_CARD_CONF_FAILED:
 		wpa_printf(MSG_INFO, "Card configuration failed.");
 		break;
 	}
 }


 static int ipw_set_wpa_ie(struct wpa_driver_ipw_data *drv,
 			  const u8 *wpa_ie, size_t wpa_ie_len)
 {
 	struct ipw_param *param;
 	int ret;
 	size_t blen = sizeof(*param) + wpa_ie_len;

 	param = os_zalloc(blen);
 	if (param == NULL)
 		return -1;

 	param->cmd = IPW_CMD_SET_WPA_IE;
 	param->u.wpa_ie.len = wpa_ie_len;
 	os_memcpy(param->u.wpa_ie.data, wpa_ie, wpa_ie_len);

 	ret = ipw_ioctl(drv, param, blen, 1);

 	os_free(param);
 	return ret;
 }


 static int ipw_set_wpa_param(struct wpa_driver_ipw_data *drv, u8 name,
 			     u32 value)
 {
 	struct ipw_param param;

 	os_memset(&param, 0, sizeof(param));
 	param.cmd = IPW_CMD_SET_WPA_PARAM;
 	param.u.wpa_param.name = name;
 	param.u.wpa_param.value = value;

 	return ipw_ioctl(drv, &param, sizeof(param), 1);
 }


 static int ipw_mlme(struct wpa_driver_ipw_data *drv, const u8 *addr,
 		    int cmd, int reason)
 {
 	struct ipw_param param;

 	os_memset(&param, 0, sizeof(param));
 	os_memcpy(param.sta_addr, addr, ETH_ALEN);
 	param.cmd = IPW_CMD_MLME;
 	param.u.mlme.command = cmd;
 	param.u.mlme.reason_code = reason;

 	return ipw_ioctl(drv, &param, sizeof(param), 1);
 }


 static int wpa_driver_ipw_set_wpa(void *priv, int enabled)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	int ret = 0;

 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);

 	if (!enabled && ipw_set_wpa_ie(drv, NULL, 0) < 0)
 		ret = -1;

 	if (ipw_set_wpa_param(drv, IPW_PARAM_WPA_ENABLED, enabled) < 0)
 		ret = -1;

 	return ret;
 }


 static int wpa_driver_ipw_set_key(void *priv, wpa_alg alg,
 				      const u8 *addr, int key_idx, int set_tx,
 				      const u8 *seq, size_t seq_len,
 				      const u8 *key, size_t key_len)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	struct ipw_param *param;
 	u8 *buf;
 	size_t blen;
 	int ret = 0;
 	char *alg_name;

 	switch (alg) {
 	case WPA_ALG_NONE:
 		alg_name = "none";
 		break;
 	case WPA_ALG_WEP:
 		alg_name = "WEP";
 		break;
 	case WPA_ALG_TKIP:
 		alg_name = "TKIP";
 		break;
 	case WPA_ALG_CCMP:
 		alg_name = "CCMP";
 		break;
 	default:
 		return -1;
 	}

 	wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
 		   "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
 		   (unsigned long) seq_len, (unsigned long) key_len);

 	if (seq_len > 8)
 		return -2;

 	blen = sizeof(*param) + key_len;
 	buf = os_zalloc(blen);
 	if (buf == NULL)
 		return -1;

 	param = (struct ipw_param *) buf;
 	param->cmd = IPW_CMD_SET_ENCRYPTION;
 	os_memset(param->sta_addr, 0xff, ETH_ALEN);
 	os_strncpy((char *) param->u.crypt.alg, alg_name,
 		   IPW_CRYPT_ALG_NAME_LEN);
 	param->u.crypt.set_tx = set_tx ? 1 : 0;
 	param->u.crypt.idx = key_idx;
 	os_memcpy(param->u.crypt.seq, seq, seq_len);
 	param->u.crypt.key_len = key_len;
 	os_memcpy((u8 *) (param + 1), key, key_len);

 	if (ipw_ioctl(drv, param, blen, 1)) {
 		wpa_printf(MSG_WARNING, "Failed to set encryption.");
 		ipw_show_set_key_error(param);
 		ret = -1;
 	}
 	os_free(buf);

 	return ret;
 }


 static int wpa_driver_ipw_set_countermeasures(void *priv, int enabled)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 	return ipw_set_wpa_param(drv, IPW_PARAM_TKIP_COUNTERMEASURES,
 				     enabled);

 }


 static int wpa_driver_ipw_set_drop_unencrypted(void *priv, int enabled)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
 	return ipw_set_wpa_param(drv, IPW_PARAM_DROP_UNENCRYPTED,
 				     enabled);
 }


 static int wpa_driver_ipw_deauthenticate(void *priv, const u8 *addr,
 					 int reason_code)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return ipw_mlme(drv, addr, IPW_MLME_STA_DEAUTH, reason_code);
 }


 static int wpa_driver_ipw_disassociate(void *priv, const u8 *addr,
 				       int reason_code)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return ipw_mlme(drv, addr, IPW_MLME_STA_DISASSOC, reason_code);
 }


 static int
 wpa_driver_ipw_associate(void *priv, struct wpa_driver_associate_params *params)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	int ret = 0;
 	int unencrypted_eapol;

 	if (ipw_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
 		ret = -1;
 	if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
 				     params->ssid_len) < 0)
 		ret = -1;
 	if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0)
 		ret = -1;

 	if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
 	    params->key_mgmt_suite == KEY_MGMT_PSK)
 		unencrypted_eapol = 0;
 	else
 		unencrypted_eapol = 1;

 	if (ipw_set_wpa_param(drv, IPW_PARAM_IEEE_802_1X,
 			      unencrypted_eapol) < 0) {
 		wpa_printf(MSG_DEBUG, "ipw: Failed to configure "
 			   "ieee_802_1x param");
 	}

 	return ret;
 }


 static int wpa_driver_ipw_set_auth_alg(void *priv, int auth_alg)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	int algs = 0;

 	if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
 		algs |= 1;
 	if (auth_alg & AUTH_ALG_SHARED_KEY)
 		algs |= 2;
 	if (auth_alg & AUTH_ALG_LEAP)
 		algs |= 4;
 	if (algs == 0)
 		algs = 1; /* at least one algorithm should be set */

 	wpa_printf(MSG_DEBUG, "%s: auth_alg=0x%x", __FUNCTION__, algs);
 	return ipw_set_wpa_param(drv, IPW_PARAM_AUTH_ALGS, algs);
 }


 static int wpa_driver_ipw_get_bssid(void *priv, u8 *bssid)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return wpa_driver_wext_get_bssid(drv->wext, bssid);
 }


 static int wpa_driver_ipw_get_ssid(void *priv, u8 *ssid)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return wpa_driver_wext_get_ssid(drv->wext, ssid);
 }


 static int wpa_driver_ipw_scan(void *priv, const u8 *ssid, size_t ssid_len)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return wpa_driver_wext_scan(drv->wext, ssid, ssid_len);
 }


 static int wpa_driver_ipw_get_scan_results(void *priv,
 					    struct wpa_scan_result *results,
 					    size_t max_size)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return wpa_driver_wext_get_scan_results(drv->wext, results, max_size);
 }


 static int wpa_driver_ipw_set_operstate(void *priv, int state)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	return wpa_driver_wext_set_operstate(drv->wext, state);
 }


 static void * wpa_driver_ipw_init(void *ctx, const char *ifname)
 {
 	struct wpa_driver_ipw_data *drv;
 	int ver;

 	wpa_printf(MSG_DEBUG, "%s is called", __FUNCTION__);
 	drv = os_zalloc(sizeof(*drv));
 	if (drv == NULL)
 		return NULL;
 	drv->wext = wpa_driver_wext_init(ctx, ifname);
 	if (drv->wext == NULL) {
 		os_free(drv);
 		return NULL;
 	}

 	ver = wpa_driver_wext_get_version(drv->wext);
 	if (ver >= 18) {
 		wpa_printf(MSG_WARNING, "Linux wireless extensions version %d "
 			   "detected.", ver);
 		wpa_printf(MSG_WARNING, "ipw2x00 driver uses driver_wext "
 			   "(-Dwext) instead of driver_ipw.");
 	}

 	drv->ctx = ctx;
 	os_strncpy(drv->ifname, ifname, sizeof(drv->ifname));
 	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
 	if (drv->sock < 0) {
 		wpa_driver_wext_deinit(drv->wext);
 		os_free(drv);
 		return NULL;
 	}

 	return drv;
 }


 static void wpa_driver_ipw_deinit(void *priv)
 {
 	struct wpa_driver_ipw_data *drv = priv;
 	wpa_driver_wext_deinit(drv->wext);
 	close(drv->sock);
 	os_free(drv);
 }


 const struct wpa_driver_ops wpa_driver_ipw_ops = {
 	.name = "ipw",
 	.desc = "Intel ipw2100/2200 driver (old; use wext with Linux 2.6.13 "
 	"or newer)",
 	.get_bssid = wpa_driver_ipw_get_bssid,
 	.get_ssid = wpa_driver_ipw_get_ssid,
 	.set_wpa = wpa_driver_ipw_set_wpa,
 	.set_key = wpa_driver_ipw_set_key,
 	.set_countermeasures = wpa_driver_ipw_set_countermeasures,
 	.set_drop_unencrypted = wpa_driver_ipw_set_drop_unencrypted,
 	.scan = wpa_driver_ipw_scan,
 	.get_scan_results = wpa_driver_ipw_get_scan_results,
 	.deauthenticate = wpa_driver_ipw_deauthenticate,
 	.disassociate = wpa_driver_ipw_disassociate,
 	.associate = wpa_driver_ipw_associate,
 	.set_auth_alg = wpa_driver_ipw_set_auth_alg,
 	.init = wpa_driver_ipw_init,
 	.deinit = wpa_driver_ipw_deinit,
 	.set_operstate = wpa_driver_ipw_set_operstate,
 };
	/*
	* WPA Supplicant - driver interaction with Linux ipw2100/2200 drivers
	* Copyright (c) 2005 Zhu Yi <yi.zhu@intel.com>
	* Copyright (c) 2004 Lubomir Gelo <lgelo@cnc.sk>
	* Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* Alternatively, this software may be distributed under the terms of BSD
	* license.
	*
	* See README and COPYING for more details.
	*
	* Please note that ipw2100/2200 drivers change to use generic Linux wireless
	* extensions if the kernel includes support for WE-18 or newer (Linux 2.6.13
	* or newer). driver_wext.c should be used in those cases.
	*/

	#include "includes.h"
	#include <sys/ioctl.h>

	#include "wireless_copy.h"
	#include "common.h"
	#include "driver.h"
	#include "l2_packet.h"
	#include "driver_wext.h"
	#include "wpa_supplicant.h"

	struct wpa_driver_ipw_data {
	void wext; / private data for driver_wext */
	void *ctx;
	char ifname[IFNAMSIZ + 1];
	int sock;
	};

	/* following definitions must be kept in sync with ipw2100.c and ipw2200.c */

	#define IPW_IOCTL_WPA_SUPPLICANT SIOCIWFIRSTPRIV+30

	#define IPW_CMD_SET_WPA_PARAM 1
	#define IPW_CMD_SET_WPA_IE 2
	#define IPW_CMD_SET_ENCRYPTION 3
	#define IPW_CMD_MLME 4

	#define IPW_PARAM_WPA_ENABLED 1
	#define IPW_PARAM_TKIP_COUNTERMEASURES 2
	#define IPW_PARAM_DROP_UNENCRYPTED 3
	#define IPW_PARAM_PRIVACY_INVOKED 4
	#define IPW_PARAM_AUTH_ALGS 5
	#define IPW_PARAM_IEEE_802_1X 6

	#define IPW_MLME_STA_DEAUTH 1
	#define IPW_MLME_STA_DISASSOC 2

	#define IPW_CRYPT_ERR_UNKNOWN_ALG 2
	#define IPW_CRYPT_ERR_UNKNOWN_ADDR 3
	#define IPW_CRYPT_ERR_CRYPT_INIT_FAILED 4
	#define IPW_CRYPT_ERR_KEY_SET_FAILED 5
	#define IPW_CRYPT_ERR_TX_KEY_SET_FAILED 6
	#define IPW_CRYPT_ERR_CARD_CONF_FAILED 7

	#define IPW_CRYPT_ALG_NAME_LEN 16

	struct ipw_param {
	u32 cmd;
	u8 sta_addr[ETH_ALEN];
	union {
	struct {
	u8 name;
	u32 value;
	} wpa_param;
	struct {
	u32 len;
	u8 reserved[32];
	u8 data[0];
	} wpa_ie;
	struct{
	u32 command;
	u32 reason_code;
	} mlme;
	struct {
	u8 alg[IPW_CRYPT_ALG_NAME_LEN];
	u8 set_tx;
	u32 err;
	u8 idx;
	u8 seq[8];
	u16 key_len;
	u8 key[0];
	} crypt;

	} u;
	};

	/* end of ipw2100.c and ipw2200.c code */

	static int ipw_ioctl(struct wpa_driver_ipw_data *drv,
	struct ipw_param *param, int len, int show_err)
	{
	struct iwreq iwr;

	os_memset(&iwr, 0, sizeof(iwr));
	os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
	iwr.u.data.pointer = (caddr_t) param;
	iwr.u.data.length = len;

	if (ioctl(drv->sock, IPW_IOCTL_WPA_SUPPLICANT, &iwr) < 0) {
	int ret = errno;
	if (show_err)
	perror("ioctl[IPW_IOCTL_WPA_SUPPLICANT]");
	return ret;
	}

	return 0;
	}


	static void ipw_show_set_key_error(struct ipw_param *param)
	{
	switch (param->u.crypt.err) {
	case IPW_CRYPT_ERR_UNKNOWN_ALG:
	wpa_printf(MSG_INFO, "Unknown algorithm '%s'.",
	param->u.crypt.alg);
	wpa_printf(MSG_INFO, "You may need to load kernel module to "
	"register that algorithm.");
	wpa_printf(MSG_INFO, "E.g., 'modprobe ieee80211_crypt_wep' for"
	" WEP.");
	break;
	case IPW_CRYPT_ERR_UNKNOWN_ADDR:
	wpa_printf(MSG_INFO, "Unknown address " MACSTR ".",
	MAC2STR(param->sta_addr));
	break;
	case IPW_CRYPT_ERR_CRYPT_INIT_FAILED:
	wpa_printf(MSG_INFO, "Crypt algorithm initialization failed.");
	break;
	case IPW_CRYPT_ERR_KEY_SET_FAILED:
	wpa_printf(MSG_INFO, "Key setting failed.");
	break;
	case IPW_CRYPT_ERR_TX_KEY_SET_FAILED:
	wpa_printf(MSG_INFO, "TX key index setting failed.");
	break;
	case IPW_CRYPT_ERR_CARD_CONF_FAILED:
	wpa_printf(MSG_INFO, "Card configuration failed.");
	break;
	}
	}


	static int ipw_set_wpa_ie(struct wpa_driver_ipw_data *drv,
	const u8 *wpa_ie, size_t wpa_ie_len)
	{
	struct ipw_param *param;
	int ret;
	size_t blen = sizeof(*param) + wpa_ie_len;

	param = os_zalloc(blen);
	if (param == NULL)
	return -1;

	param->cmd = IPW_CMD_SET_WPA_IE;
	param->u.wpa_ie.len = wpa_ie_len;
	os_memcpy(param->u.wpa_ie.data, wpa_ie, wpa_ie_len);

	ret = ipw_ioctl(drv, param, blen, 1);

	os_free(param);
	return ret;
	}


	static int ipw_set_wpa_param(struct wpa_driver_ipw_data *drv, u8 name,
	u32 value)
	{
	struct ipw_param param;

	os_memset(&param, 0, sizeof(param));
	param.cmd = IPW_CMD_SET_WPA_PARAM;
	param.u.wpa_param.name = name;
	param.u.wpa_param.value = value;

	return ipw_ioctl(drv, &param, sizeof(param), 1);
	}


	static int ipw_mlme(struct wpa_driver_ipw_data drv, const u8 addr,
	int cmd, int reason)
	{
	struct ipw_param param;

	os_memset(&param, 0, sizeof(param));
	os_memcpy(param.sta_addr, addr, ETH_ALEN);
	param.cmd = IPW_CMD_MLME;
	param.u.mlme.command = cmd;
	param.u.mlme.reason_code = reason;

	return ipw_ioctl(drv, &param, sizeof(param), 1);
	}


	static int wpa_driver_ipw_set_wpa(void *priv, int enabled)
	{
	struct wpa_driver_ipw_data *drv = priv;
	int ret = 0;

	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);

	if (!enabled && ipw_set_wpa_ie(drv, NULL, 0) < 0)
	ret = -1;

	if (ipw_set_wpa_param(drv, IPW_PARAM_WPA_ENABLED, enabled) < 0)
	ret = -1;

	return ret;
	}


	static int wpa_driver_ipw_set_key(void *priv, wpa_alg alg,
	const u8 *addr, int key_idx, int set_tx,
	const u8 *seq, size_t seq_len,
	const u8 *key, size_t key_len)
	{
	struct wpa_driver_ipw_data *drv = priv;
	struct ipw_param *param;
	u8 *buf;
	size_t blen;
	int ret = 0;
	char *alg_name;

	switch (alg) {
	case WPA_ALG_NONE:
	alg_name = "none";
	break;
	case WPA_ALG_WEP:
	alg_name = "WEP";
	break;
	case WPA_ALG_TKIP:
	alg_name = "TKIP";
	break;
	case WPA_ALG_CCMP:
	alg_name = "CCMP";
	break;
	default:
	return -1;
	}

	wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
	"key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
	(unsigned long) seq_len, (unsigned long) key_len);

	if (seq_len > 8)
	return -2;

	blen = sizeof(*param) + key_len;
	buf = os_zalloc(blen);
	if (buf == NULL)
	return -1;

	param = (struct ipw_param *) buf;
	param->cmd = IPW_CMD_SET_ENCRYPTION;
	os_memset(param->sta_addr, 0xff, ETH_ALEN);
	os_strncpy((char *) param->u.crypt.alg, alg_name,
	IPW_CRYPT_ALG_NAME_LEN);
	param->u.crypt.set_tx = set_tx ? 1 : 0;
	param->u.crypt.idx = key_idx;
	os_memcpy(param->u.crypt.seq, seq, seq_len);
	param->u.crypt.key_len = key_len;
	os_memcpy((u8 *) (param + 1), key, key_len);

	if (ipw_ioctl(drv, param, blen, 1)) {
	wpa_printf(MSG_WARNING, "Failed to set encryption.");
	ipw_show_set_key_error(param);
	ret = -1;
	}
	os_free(buf);

	return ret;
	}


	static int wpa_driver_ipw_set_countermeasures(void *priv, int enabled)
	{
	struct wpa_driver_ipw_data *drv = priv;
	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
	return ipw_set_wpa_param(drv, IPW_PARAM_TKIP_COUNTERMEASURES,
	enabled);

	}


	static int wpa_driver_ipw_set_drop_unencrypted(void *priv, int enabled)
	{
	struct wpa_driver_ipw_data *drv = priv;
	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
	return ipw_set_wpa_param(drv, IPW_PARAM_DROP_UNENCRYPTED,
	enabled);
	}


	static int wpa_driver_ipw_deauthenticate(void priv, const u8 addr,
	int reason_code)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return ipw_mlme(drv, addr, IPW_MLME_STA_DEAUTH, reason_code);
	}


	static int wpa_driver_ipw_disassociate(void priv, const u8 addr,
	int reason_code)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return ipw_mlme(drv, addr, IPW_MLME_STA_DISASSOC, reason_code);
	}


	static int
	wpa_driver_ipw_associate(void priv, struct wpa_driver_associate_params params)
	{
	struct wpa_driver_ipw_data *drv = priv;
	int ret = 0;
	int unencrypted_eapol;

	if (ipw_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
	ret = -1;
	if (wpa_driver_wext_set_ssid(drv->wext, params->ssid,
	params->ssid_len) < 0)
	ret = -1;
	if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0)
	ret = -1;

	if (params->key_mgmt_suite == KEY_MGMT_802_1X \|\|
	params->key_mgmt_suite == KEY_MGMT_PSK)
	unencrypted_eapol = 0;
	else
	unencrypted_eapol = 1;

	if (ipw_set_wpa_param(drv, IPW_PARAM_IEEE_802_1X,
	unencrypted_eapol) < 0) {
	wpa_printf(MSG_DEBUG, "ipw: Failed to configure "
	"ieee_802_1x param");
	}

	return ret;
	}


	static int wpa_driver_ipw_set_auth_alg(void *priv, int auth_alg)
	{
	struct wpa_driver_ipw_data *drv = priv;
	int algs = 0;

	if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
	algs \|= 1;
	if (auth_alg & AUTH_ALG_SHARED_KEY)
	algs \|= 2;
	if (auth_alg & AUTH_ALG_LEAP)
	algs \|= 4;
	if (algs == 0)
	algs = 1; /* at least one algorithm should be set */

	wpa_printf(MSG_DEBUG, "%s: auth_alg=0x%x", __FUNCTION__, algs);
	return ipw_set_wpa_param(drv, IPW_PARAM_AUTH_ALGS, algs);
	}


	static int wpa_driver_ipw_get_bssid(void priv, u8 bssid)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return wpa_driver_wext_get_bssid(drv->wext, bssid);
	}


	static int wpa_driver_ipw_get_ssid(void priv, u8 ssid)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return wpa_driver_wext_get_ssid(drv->wext, ssid);
	}


	static int wpa_driver_ipw_scan(void priv, const u8 ssid, size_t ssid_len)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return wpa_driver_wext_scan(drv->wext, ssid, ssid_len);
	}


	static int wpa_driver_ipw_get_scan_results(void *priv,
	struct wpa_scan_result *results,
	size_t max_size)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return wpa_driver_wext_get_scan_results(drv->wext, results, max_size);
	}


	static int wpa_driver_ipw_set_operstate(void *priv, int state)
	{
	struct wpa_driver_ipw_data *drv = priv;
	return wpa_driver_wext_set_operstate(drv->wext, state);
	}


	static void * wpa_driver_ipw_init(void ctx, const char ifname)
	{
	struct wpa_driver_ipw_data *drv;
	int ver;

	wpa_printf(MSG_DEBUG, "%s is called", __FUNCTION__);
	drv = os_zalloc(sizeof(*drv));
	if (drv == NULL)
	return NULL;
	drv->wext = wpa_driver_wext_init(ctx, ifname);
	if (drv->wext == NULL) {
	os_free(drv);
	return NULL;
	}

	ver = wpa_driver_wext_get_version(drv->wext);
	if (ver >= 18) {
	wpa_printf(MSG_WARNING, "Linux wireless extensions version %d "
	"detected.", ver);
	wpa_printf(MSG_WARNING, "ipw2x00 driver uses driver_wext "
	"(-Dwext) instead of driver_ipw.");
	}

	drv->ctx = ctx;
	os_strncpy(drv->ifname, ifname, sizeof(drv->ifname));
	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
	if (drv->sock < 0) {
	wpa_driver_wext_deinit(drv->wext);
	os_free(drv);
	return NULL;
	}

	return drv;
	}


	static void wpa_driver_ipw_deinit(void *priv)
	{
	struct wpa_driver_ipw_data *drv = priv;
	wpa_driver_wext_deinit(drv->wext);
	close(drv->sock);
	os_free(drv);
	}


	const struct wpa_driver_ops wpa_driver_ipw_ops = {
	.name = "ipw",
	.desc = "Intel ipw2100/2200 driver (old; use wext with Linux 2.6.13 "
	"or newer)",
	.get_bssid = wpa_driver_ipw_get_bssid,
	.get_ssid = wpa_driver_ipw_get_ssid,
	.set_wpa = wpa_driver_ipw_set_wpa,
	.set_key = wpa_driver_ipw_set_key,
	.set_countermeasures = wpa_driver_ipw_set_countermeasures,
	.set_drop_unencrypted = wpa_driver_ipw_set_drop_unencrypted,
	.scan = wpa_driver_ipw_scan,
	.get_scan_results = wpa_driver_ipw_get_scan_results,
	.deauthenticate = wpa_driver_ipw_deauthenticate,
	.disassociate = wpa_driver_ipw_disassociate,
	.associate = wpa_driver_ipw_associate,
	.set_auth_alg = wpa_driver_ipw_set_auth_alg,
	.init = wpa_driver_ipw_init,
	.deinit = wpa_driver_ipw_deinit,
	.set_operstate = wpa_driver_ipw_set_operstate,
	};