drivers/staging/vt6655/hostap.c

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * File: hostap.c
 *
 * Purpose: handle hostap deamon ioctl input/out functions
 *
 * Author: Lyndon Chen
 *
 * Date: Oct. 20, 2003
 *
 * Functions:
 *
 * Revision History:
 *
 */

#include "hostap.h"
#include "iocmd.h"
#include "mac.h"
#include "card.h"
#include "baseband.h"
#include "wpactl.h"
#include "key.h"

#define VIAWGET_HOSTAPD_MAX_BUF_SIZE 1024
#define HOSTAP_CRYPT_FLAG_SET_TX_KEY BIT0
#define HOSTAP_CRYPT_ERR_UNKNOWN_ADDR 3
#define HOSTAP_CRYPT_ERR_KEY_SET_FAILED 5

/*---------------------  Static Definitions -------------------------*/

/*---------------------  Static Classes  ----------------------------*/

/*---------------------  Static Variables  --------------------------*/
//static int          msglevel                =MSG_LEVEL_DEBUG;
static int msglevel = MSG_LEVEL_INFO;

/*---------------------  Static Functions  --------------------------*/

/*---------------------  Export Variables  --------------------------*/

/*
 * Description:
 *      register net_device (AP) for hostap deamon
 *
 * Parameters:
 *  In:
 *      pDevice             -
 *      rtnl_locked         -
 *  Out:
 *
 * Return Value:
 *
 */

static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked)
{
	PSDevice apdev_priv;
	struct net_device *dev = pDevice->dev;
	int ret;
	const struct net_device_ops apdev_netdev_ops = {
		.ndo_start_xmit         = pDevice->tx_80211,
	};

	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name);

	pDevice->apdev = kzalloc(sizeof(struct net_device), GFP_KERNEL);
	if (pDevice->apdev == NULL)
		return -ENOMEM;

	apdev_priv = netdev_priv(pDevice->apdev);
	*apdev_priv = *pDevice;
	memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN);

	pDevice->apdev->netdev_ops = &apdev_netdev_ops;

	pDevice->apdev->type = ARPHRD_IEEE80211;

	pDevice->apdev->base_addr = dev->base_addr;
	pDevice->apdev->irq = dev->irq;
	pDevice->apdev->mem_start = dev->mem_start;
	pDevice->apdev->mem_end = dev->mem_end;
	sprintf(pDevice->apdev->name, "%sap", dev->name);
	if (rtnl_locked)
		ret = register_netdevice(pDevice->apdev);
	else
		ret = register_netdev(pDevice->apdev);
	if (ret) {
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: register_netdevice(AP) failed!\n",
			dev->name);
		return -1;
	}

	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Registered netdevice %s for AP management\n",
		dev->name, pDevice->apdev->name);

	KeyvInitTable(&pDevice->sKey, pDevice->PortOffset);

	return 0;
}

/*
 * Description:
 *      unregister net_device(AP)
 *
 * Parameters:
 *  In:
 *      pDevice             -
 *      rtnl_locked         -
 *  Out:
 *
 * Return Value:
 *
 */

static int hostap_disable_hostapd(PSDevice pDevice, int rtnl_locked)
{
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: disabling hostapd mode\n", pDevice->dev->name);

	if (pDevice->apdev && pDevice->apdev->name && pDevice->apdev->name[0]) {
		if (rtnl_locked)
			unregister_netdevice(pDevice->apdev);
		else
			unregister_netdev(pDevice->apdev);
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Netdevice %s unregistered\n",
			pDevice->dev->name, pDevice->apdev->name);
	}
	kfree(pDevice->apdev);
	pDevice->apdev = NULL;
	pDevice->bEnable8021x = false;
	pDevice->bEnableHostWEP = false;
	pDevice->bEncryptionEnable = false;

//4.2007-0118-03,<Add> by EinsnLiu
//execute some clear work
	pDevice->pMgmt->byCSSPK = KEY_CTL_NONE;
	pDevice->pMgmt->byCSSGK = KEY_CTL_NONE;
	KeyvInitTable(&pDevice->sKey, pDevice->PortOffset);

	return 0;
}

/*
 * Description:
 *      Set enable/disable hostapd mode
 *
 * Parameters:
 *  In:
 *      pDevice             -
 *      rtnl_locked         -
 *  Out:
 *
 * Return Value:
 *
 */

int vt6655_hostap_set_hostapd(PSDevice pDevice, int val, int rtnl_locked)
{
	if (val < 0 || val > 1)
		return -EINVAL;

	if (pDevice->bEnableHostapd == val)
		return 0;

	pDevice->bEnableHostapd = val;

	if (val)
		return hostap_enable_hostapd(pDevice, rtnl_locked);
	else
		return hostap_disable_hostapd(pDevice, rtnl_locked);
}

/*
 * Description:
 *      remove station function supported for hostap deamon
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_remove_sta(PSDevice pDevice,
			     struct viawget_hostapd_param *param)
{
	unsigned int uNodeIndex;

	if (BSSDBbIsSTAInNodeDB(pDevice->pMgmt, param->sta_addr, &uNodeIndex)) {
		BSSvRemoveOneNode(pDevice, uNodeIndex);
	} else {
		return -ENOENT;
	}
	return 0;
}

/*
 * Description:
 *      add a station from hostap deamon
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_add_sta(PSDevice pDevice,
			  struct viawget_hostapd_param *param)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;
	unsigned int uNodeIndex;

	if (!BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) {
		BSSvCreateOneNode((PSDevice)pDevice, &uNodeIndex);
	}
	memcpy(pMgmt->sNodeDBTable[uNodeIndex].abyMACAddr, param->sta_addr, WLAN_ADDR_LEN);
	pMgmt->sNodeDBTable[uNodeIndex].eNodeState = NODE_ASSOC;
	pMgmt->sNodeDBTable[uNodeIndex].wCapInfo = param->u.add_sta.capability;
// TODO listenInterval
//    pMgmt->sNodeDBTable[uNodeIndex].wListenInterval = 1;
	pMgmt->sNodeDBTable[uNodeIndex].bPSEnable = false;
	pMgmt->sNodeDBTable[uNodeIndex].bySuppRate = param->u.add_sta.tx_supp_rates;

	// set max tx rate
	pMgmt->sNodeDBTable[uNodeIndex].wTxDataRate =
		pMgmt->sNodeDBTable[uNodeIndex].wMaxSuppRate;
	// set max basic rate
	pMgmt->sNodeDBTable[uNodeIndex].wMaxBasicRate = RATE_2M;
	// Todo: check sta preamble, if ap can't support, set status code
	pMgmt->sNodeDBTable[uNodeIndex].bShortPreamble =
		WLAN_GET_CAP_INFO_SHORTPREAMBLE(pMgmt->sNodeDBTable[uNodeIndex].wCapInfo);

	pMgmt->sNodeDBTable[uNodeIndex].wAID = (unsigned short)param->u.add_sta.aid;

	pMgmt->sNodeDBTable[uNodeIndex].ulLastRxJiffer = jiffies;

	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Add STA AID= %d \n", pMgmt->sNodeDBTable[uNodeIndex].wAID);
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "MAC=%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X \n",
		param->sta_addr[0],
		param->sta_addr[1],
		param->sta_addr[2],
		param->sta_addr[3],
		param->sta_addr[4],
		param->sta_addr[5]
		);
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Max Support rate = %d \n",
		pMgmt->sNodeDBTable[uNodeIndex].wMaxSuppRate);

	return 0;
}

/*
 * Description:
 *      get station info
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */

static int hostap_get_info_sta(PSDevice pDevice,
			       struct viawget_hostapd_param *param)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;
	unsigned int uNodeIndex;

	if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) {
		param->u.get_info_sta.inactive_sec =
			(jiffies - pMgmt->sNodeDBTable[uNodeIndex].ulLastRxJiffer) / HZ;

		//param->u.get_info_sta.txexc = pMgmt->sNodeDBTable[uNodeIndex].uTxAttempts;
	} else {
		return -ENOENT;
	}

	return 0;
}

/*
 * Description:
 *      reset txexec
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *      true, false
 *
 * Return Value:
 *
 */
/*
  static int hostap_reset_txexc_sta(PSDevice pDevice,
  struct viawget_hostapd_param *param)
  {
  PSMgmtObject    pMgmt = pDevice->pMgmt;
  unsigned int uNodeIndex;

  if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) {
  pMgmt->sNodeDBTable[uNodeIndex].uTxAttempts = 0;
  } else {
  return -ENOENT;
  }

  return 0;
  }
*/

/*
 * Description:
 *      set station flag
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_set_flags_sta(PSDevice pDevice,
				struct viawget_hostapd_param *param)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;
	unsigned int uNodeIndex;

	if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) {
		pMgmt->sNodeDBTable[uNodeIndex].dwFlags |= param->u.set_flags_sta.flags_or;
		pMgmt->sNodeDBTable[uNodeIndex].dwFlags &= param->u.set_flags_sta.flags_and;
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " dwFlags = %x \n",
			(unsigned int)pMgmt->sNodeDBTable[uNodeIndex].dwFlags);
	} else {
		return -ENOENT;
	}

	return 0;
}

/*
 * Description:
 *      set generic element (wpa ie)
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_set_generic_element(PSDevice pDevice,
				      struct viawget_hostapd_param *param)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;

	memcpy(pMgmt->abyWPAIE,
	       param->u.generic_elem.data,
	       param->u.generic_elem.len
		);

	pMgmt->wWPAIELen = param->u.generic_elem.len;

	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "pMgmt->wWPAIELen = %d\n", pMgmt->wWPAIELen);

	// disable wpa
	if (pMgmt->wWPAIELen == 0) {
		pMgmt->eAuthenMode = WMAC_AUTH_OPEN;
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " No WPAIE, Disable WPA \n");
	} else  {
		// enable wpa
		if ((pMgmt->abyWPAIE[0] == WLAN_EID_RSN_WPA) ||
		    (pMgmt->abyWPAIE[0] == WLAN_EID_RSN)) {
			pMgmt->eAuthenMode = WMAC_AUTH_WPANONE;
			DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Set WPAIE enable WPA\n");
		} else
			return -EINVAL;
	}

	return 0;
}

/*
 * Description:
 *      flush station nodes table.
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *  Out:
 *
 * Return Value:
 *
 */

static void hostap_flush_sta(PSDevice pDevice)
{
	// reserved node index =0 for multicast node.
	BSSvClearNodeDBTable(pDevice, 1);
	pDevice->uAssocCount = 0;

	return;
}

/*
 * Description:
 *      set each stations encryption key
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_set_encryption(PSDevice pDevice,
				 struct viawget_hostapd_param *param,
				 int param_len)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;
	unsigned long dwKeyIndex = 0;
	unsigned char abyKey[MAX_KEY_LEN];
	unsigned char abySeq[MAX_KEY_LEN];
	NDIS_802_11_KEY_RSC   KeyRSC;
	unsigned char byKeyDecMode = KEY_CTL_WEP;
	int     ret = 0;
	int     iNodeIndex = -1;
	int     ii;
	bool bKeyTableFull = false;
	unsigned short wKeyCtl = 0;

	param->u.crypt.err = 0;
/*
  if (param_len !=
  (int) ((char *) param->u.crypt.key - (char *) param) +
  param->u.crypt.key_len)
  return -EINVAL;
*/

	if (param->u.crypt.alg > WPA_ALG_CCMP)
		return -EINVAL;

	if ((param->u.crypt.idx > 3) || (param->u.crypt.key_len > MAX_KEY_LEN)) {
		param->u.crypt.err = HOSTAP_CRYPT_ERR_KEY_SET_FAILED;
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " HOSTAP_CRYPT_ERR_KEY_SET_FAILED\n");
		return -EINVAL;
	}

	if (is_broadcast_ether_addr(param->sta_addr)) {
		if (param->u.crypt.idx >= MAX_GROUP_KEY)
			return -EINVAL;
		iNodeIndex = 0;

	} else {
		if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &iNodeIndex) == false) {
			param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR;
			DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " HOSTAP_CRYPT_ERR_UNKNOWN_ADDR\n");
			return -EINVAL;
		}
	}
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " hostap_set_encryption: sta_index %d \n", iNodeIndex);
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " hostap_set_encryption: alg %d \n", param->u.crypt.alg);

	if (param->u.crypt.alg == WPA_ALG_NONE) {
		if (pMgmt->sNodeDBTable[iNodeIndex].bOnFly == true) {
			if (KeybRemoveKey(&(pDevice->sKey),
					  param->sta_addr,
					  pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex,
					  pDevice->PortOffset) == false) {
				DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "KeybRemoveKey fail \n");
			}
			pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false;
		}
		pMgmt->sNodeDBTable[iNodeIndex].byKeyIndex = 0;
		pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = 0;
		pMgmt->sNodeDBTable[iNodeIndex].uWepKeyLength = 0;
		pMgmt->sNodeDBTable[iNodeIndex].KeyRSC = 0;
		pMgmt->sNodeDBTable[iNodeIndex].dwTSC47_16 = 0;
		pMgmt->sNodeDBTable[iNodeIndex].wTSC15_0 = 0;
		pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = 0;
		memset(&pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0],
		       0,
		       MAX_KEY_LEN
);

		return ret;
	}

	memcpy(abyKey, param->u.crypt.key, param->u.crypt.key_len);
	// copy to node key tbl
	pMgmt->sNodeDBTable[iNodeIndex].byKeyIndex = param->u.crypt.idx;
	pMgmt->sNodeDBTable[iNodeIndex].uWepKeyLength = param->u.crypt.key_len;
	memcpy(&pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0],
	       param->u.crypt.key,
	       param->u.crypt.key_len
);

	dwKeyIndex = (unsigned long)(param->u.crypt.idx);
	if (param->u.crypt.flags & HOSTAP_CRYPT_FLAG_SET_TX_KEY) {
		pDevice->byKeyIndex = (unsigned char)dwKeyIndex;
		pDevice->bTransmitKey = true;
		dwKeyIndex |= (1 << 31);
	}

	if (param->u.crypt.alg == WPA_ALG_WEP) {
		if ((pDevice->bEnable8021x == false) || (iNodeIndex == 0)) {
			KeybSetDefaultKey(&(pDevice->sKey),
					  dwKeyIndex & ~(BIT30 | USE_KEYRSC),
					  param->u.crypt.key_len,
					  NULL,
					  abyKey,
					  KEY_CTL_WEP,
					  pDevice->PortOffset,
					  pDevice->byLocalID);

		} else {
			// 8021x enable, individual key
			dwKeyIndex |= (1 << 30); // set pairwise key
			if (KeybSetKey(&(pDevice->sKey),
				       &param->sta_addr[0],
				       dwKeyIndex & ~(USE_KEYRSC),
				       param->u.crypt.key_len,
				       (PQWORD) &(KeyRSC),
				       (unsigned char *)abyKey,
				       KEY_CTL_WEP,
				       pDevice->PortOffset,
				       pDevice->byLocalID) == true) {
				pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true;

			} else {
				// Key Table Full
				pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false;
				bKeyTableFull = true;
			}
		}
		pDevice->eEncryptionStatus = Ndis802_11Encryption1Enabled;
		pDevice->bEncryptionEnable = true;
		pMgmt->byCSSPK = KEY_CTL_WEP;
		pMgmt->byCSSGK = KEY_CTL_WEP;
		pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = KEY_CTL_WEP;
		pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = dwKeyIndex;
		return ret;
	}

	if (param->u.crypt.seq) {
		memcpy(&abySeq, param->u.crypt.seq, 8);
		for (ii = 0; ii < 8; ii++)
			KeyRSC |= (unsigned long)abySeq[ii] << (ii * 8);

		dwKeyIndex |= 1 << 29;
		pMgmt->sNodeDBTable[iNodeIndex].KeyRSC = KeyRSC;
	}

	if (param->u.crypt.alg == WPA_ALG_TKIP) {
		if (param->u.crypt.key_len != MAX_KEY_LEN)
			return -EINVAL;
		pDevice->eEncryptionStatus = Ndis802_11Encryption2Enabled;
		byKeyDecMode = KEY_CTL_TKIP;
		pMgmt->byCSSPK = KEY_CTL_TKIP;
		pMgmt->byCSSGK = KEY_CTL_TKIP;
	}

	if (param->u.crypt.alg == WPA_ALG_CCMP) {
		if ((param->u.crypt.key_len != AES_KEY_LEN) ||
		    (pDevice->byLocalID <= REV_ID_VT3253_A1))
			return -EINVAL;
		pDevice->eEncryptionStatus = Ndis802_11Encryption3Enabled;
		byKeyDecMode = KEY_CTL_CCMP;
		pMgmt->byCSSPK = KEY_CTL_CCMP;
		pMgmt->byCSSGK = KEY_CTL_CCMP;
	}

	if (iNodeIndex == 0) {
		KeybSetDefaultKey(&(pDevice->sKey),
				  dwKeyIndex,
				  param->u.crypt.key_len,
				  (PQWORD) &(KeyRSC),
				  abyKey,
				  byKeyDecMode,
				  pDevice->PortOffset,
				  pDevice->byLocalID);
		pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true;

	} else {
		dwKeyIndex |= (1 << 30); // set pairwise key
		if (KeybSetKey(&(pDevice->sKey),
			       &param->sta_addr[0],
			       dwKeyIndex,
			       param->u.crypt.key_len,
			       (PQWORD) &(KeyRSC),
			       (unsigned char *)abyKey,
			       byKeyDecMode,
			       pDevice->PortOffset,
			       pDevice->byLocalID) == true) {
			pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true;

		} else {
			// Key Table Full
			pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false;
			bKeyTableFull = true;
			DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " Key Table Full\n");
		}

	}

	if (bKeyTableFull == true) {
		wKeyCtl &= 0x7F00;              // clear all key control filed
		wKeyCtl |= (byKeyDecMode << 4);
		wKeyCtl |= (byKeyDecMode);
		wKeyCtl |= 0x0044;              // use group key for all address
		wKeyCtl |= 0x4000;              // disable KeyTable[MAX_KEY_TABLE-1] on-fly to genernate rx int
		MACvSetDefaultKeyCtl(pDevice->PortOffset, wKeyCtl, MAX_KEY_TABLE-1, pDevice->byLocalID);
	}

	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " Set key sta_index= %d \n", iNodeIndex);
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " tx_index=%d len=%d \n", param->u.crypt.idx,
		param->u.crypt.key_len);
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " key=%x-%x-%x-%x-%x-xxxxx \n",
		pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0],
		pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[1],
		pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[2],
		pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[3],
		pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[4]
);

	// set wep key
	pDevice->bEncryptionEnable = true;
	pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = byKeyDecMode;
	pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = dwKeyIndex;
	pMgmt->sNodeDBTable[iNodeIndex].dwTSC47_16 = 0;
	pMgmt->sNodeDBTable[iNodeIndex].wTSC15_0 = 0;

	return ret;
}

/*
 * Description:
 *      get each stations encryption key
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      param     -
 *  Out:
 *
 * Return Value:
 *
 */
static int hostap_get_encryption(PSDevice pDevice,
				 struct viawget_hostapd_param *param,
				 int param_len)
{
	PSMgmtObject    pMgmt = pDevice->pMgmt;
	int     ret = 0;
	int     ii;
	int     iNodeIndex = 0;

	param->u.crypt.err = 0;

	if (is_broadcast_ether_addr(param->sta_addr)) {
		iNodeIndex = 0;
	} else {
		if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &iNodeIndex) == false) {
			param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR;
			DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "hostap_get_encryption: HOSTAP_CRYPT_ERR_UNKNOWN_ADDR\n");
			return -EINVAL;
		}
	}
	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "hostap_get_encryption: %d\n", iNodeIndex);
	memset(param->u.crypt.seq, 0, 8);
	for (ii = 0; ii < 8; ii++) {
		param->u.crypt.seq[ii] = (unsigned char)pMgmt->sNodeDBTable[iNodeIndex].KeyRSC >> (ii * 8);
	}

	return ret;
}

/*
 * Description:
 *      vt6655_hostap_ioctl main function supported for hostap deamon.
 *
 * Parameters:
 *  In:
 *      pDevice   -
 *      iw_point  -
 *  Out:
 *
 * Return Value:
 *
 */

int vt6655_hostap_ioctl(PSDevice pDevice, struct iw_point *p)
{
	struct viawget_hostapd_param *param;
	int ret = 0;
	int ap_ioctl = 0;

	if (p->length < sizeof(struct viawget_hostapd_param) ||
	    p->length > VIAWGET_HOSTAPD_MAX_BUF_SIZE || !p->pointer)
		return -EINVAL;

	param = kmalloc((int)p->length, (int)GFP_KERNEL);
	if (param == NULL)
		return -ENOMEM;

	if (copy_from_user(param, p->pointer, p->length)) {
		ret = -EFAULT;
		goto out;
	}

	switch (param->cmd) {
	case VIAWGET_HOSTAPD_SET_ENCRYPTION:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SET_ENCRYPTION \n");
		spin_lock_irq(&pDevice->lock);
		ret = hostap_set_encryption(pDevice, param, p->length);
		spin_unlock_irq(&pDevice->lock);
		break;
	case VIAWGET_HOSTAPD_GET_ENCRYPTION:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_GET_ENCRYPTION \n");
		spin_lock_irq(&pDevice->lock);
		ret = hostap_get_encryption(pDevice, param, p->length);
		spin_unlock_irq(&pDevice->lock);
		break;
	case VIAWGET_HOSTAPD_SET_ASSOC_AP_ADDR:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SET_ASSOC_AP_ADDR \n");
		return -EOPNOTSUPP;
		break;
	case VIAWGET_HOSTAPD_FLUSH:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_FLUSH \n");
		spin_lock_irq(&pDevice->lock);
		hostap_flush_sta(pDevice);
		spin_unlock_irq(&pDevice->lock);
		break;
	case VIAWGET_HOSTAPD_ADD_STA:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_ADD_STA \n");
		spin_lock_irq(&pDevice->lock);
		ret = hostap_add_sta(pDevice, param);
		spin_unlock_irq(&pDevice->lock);
		break;
	case VIAWGET_HOSTAPD_REMOVE_STA:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_REMOVE_STA \n");
		spin_lock_irq(&pDevice->lock);
		ret = hostap_remove_sta(pDevice, param);
		spin_unlock_irq(&pDevice->lock);
		break;
	case VIAWGET_HOSTAPD_GET_INFO_STA:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_GET_INFO_STA \n");
		ret = hostap_get_info_sta(pDevice, param);
		ap_ioctl = 1;
		break;
/*
	case VIAWGET_HOSTAPD_RESET_TXEXC_STA:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_RESET_TXEXC_STA \n");
		ret = hostap_reset_txexc_sta(pDevice, param);
		break;
*/
	case VIAWGET_HOSTAPD_SET_FLAGS_STA:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SET_FLAGS_STA \n");
		ret = hostap_set_flags_sta(pDevice, param);
		break;

	case VIAWGET_HOSTAPD_MLME:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_MLME \n");
		return -EOPNOTSUPP;

	case VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT \n");
		ret = hostap_set_generic_element(pDevice, param);
		break;

	case VIAWGET_HOSTAPD_SCAN_REQ:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_SCAN_REQ \n");
		return -EOPNOTSUPP;

	case VIAWGET_HOSTAPD_STA_CLEAR_STATS:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "VIAWGET_HOSTAPD_STA_CLEAR_STATS \n");
		return -EOPNOTSUPP;

	default:
		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "vt6655_hostap_ioctl: unknown cmd=%d\n",
			(int)param->cmd);
		return -EOPNOTSUPP;
		break;
	}

	if ((ret == 0) && ap_ioctl) {
		if (copy_to_user(p->pointer, param, p->length)) {
			ret = -EFAULT;
			goto out;
		}
	}

out:
	kfree(param);

	return ret;
}