hostap.c

VIA VT6656 USB linux source code.

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This software is copyrighted by and is the sole property of
 * VIA Networking Technologies, Inc. This software may only be used
 * in accordance with the corresponding license agreement. Any unauthorized
 * use, duplication, transmission, distribution, or disclosure of this
 * software is expressly forbidden.
 *
 * This software is provided by VIA Networking Technologies, Inc. "as is"
 * and any express or implied warranties, including, but not limited to, the
 * implied warranties of merchantability and fitness for a particular purpose
 * are disclaimed. In no event shall VIA Networking Technologies, Inc.
 * be liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages.
 *  
 * File: hostap.c
 *
 * Purpose: handle hostap deamon ioctl input/out functions
 *
 * Author: Lyndon Chen
 *
 * Date: Oct. 20, 2003
 *
 * Functions: 
 *
 * Revision History:
 *
 */
 

#if !defined(__HOSTAP_H__)
#include "hostap.h"
#endif
#if !defined(__IOCMD_H__)
#include "iocmd.h"
#endif
#if !defined(__MAC_H__)
#include "mac.h"
#endif
#if !defined(__CARD_H__)
#include "card.h"
#endif
#if !defined(__BASEBAND_H__)
#include "baseband.h"
#endif
#if !defined(__WPACTL_H__)
#include "wpactl.h"
#endif
#if !defined(__KEY_H__)
#include "key.h"
#endif
#if !defined(__MAC_H__)
#include "mac.h"
#endif
#if !defined(__DATARATE_H__)
#include "datarate.h"
#endif


#define VIAWGET_HOSTAPD_MAX_BUF_SIZE 1024
#define HOSTAP_CRYPT_FLAG_SET_TX_KEY BIT0
#define HOSTAP_CRYPT_FLAG_PERMANENT BIT1
#define HOSTAP_CRYPT_ERR_UNKNOWN_ALG 2
#define HOSTAP_CRYPT_ERR_UNKNOWN_ADDR 3
#define HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED 4
#define HOSTAP_CRYPT_ERR_KEY_SET_FAILED 5
#define HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED 6
#define HOSTAP_CRYPT_ERR_CARD_CONF_FAILED 7


/*---------------------  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)
{
	struct net_device *dev = pDevice->dev;
	int ret;

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

	pDevice->apdev = (struct net_device *)kmalloc(sizeof(struct net_device), GFP_KERNEL);
    if (pDevice->apdev == NULL)
		return -ENOMEM;
	memset(pDevice->apdev, 0, sizeof(struct net_device));
	
	pDevice->apdev->priv = pDevice;
	memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN);
	pDevice->apdev->hard_start_xmit = pDevice->tx_80211;
	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,&pDevice->sKey);    

	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;
    
	return 0;
}


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

int 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)
{
	UINT uNodeIndex;
	
	
    if (BSSbIsSTAInNodeDB(pDevice, 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->sMgmtObj);
	UINT uNodeIndex;
	
    	
    if (!BSSbIsSTAInNodeDB(pDevice, 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 = (WORD)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->sMgmtObj);    
	UINT uNodeIndex;
		
    if (BSSbIsSTAInNodeDB(pDevice, 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:
 *      TURE, FALSE
 *
 * Return Value: 
 *
 */ 
/*
static int hostap_reset_txexc_sta(PSDevice pDevice,
					  struct viawget_hostapd_param *param)
{
    PSMgmtObject    pMgmt = &(pDevice->sMgmtObj);    
	UINT uNodeIndex;
	
    if (BSSbIsSTAInNodeDB(pDevice, 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->sMgmtObj);    
	UINT uNodeIndex;
	
    if (BSSbIsSTAInNodeDB(pDevice, 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",
		            (UINT)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->sMgmtObj);

    

    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;
}