git.oblomov.eu Git - linux-2.6/blob - drivers/staging/vt6655/wroute.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: wroute.c
  20  *
  21  * Purpose: handle WMAC frame relay & filterring
  22  *
  23  * Author: Lyndon Chen
  24  *
  25  * Date: May 20, 2003
  26  *
  27  * Functions:
  28  *      ROUTEbRelay - Relay packet
  29  *
  30  * Revision History:
  31  *
  32  */
  33
  34
  35 #if !defined(__MAC_H__)
  36 #include "mac.h"
  37 #endif
  38 #if !defined(__TCRC_H__)
  39 #include "tcrc.h"
  40 #endif
  41 #if !defined(__RXTX_H__)
  42 #include "rxtx.h"
  43 #endif
  44 #if !defined(__WROUTE_H__)
  45 #include "wroute.h"
  46 #endif
  47 #if !defined(__CARD_H__)
  48 #include "card.h"
  49 #endif
  50 #if !defined(__BASEBAND_H__)
  51 #include "baseband.h"
  52 #endif
  53 /*---------------------  Static Definitions -------------------------*/
  54
  55 /*---------------------  Static Classes  ----------------------------*/
  56
  57 /*---------------------  Static Variables  --------------------------*/
  58 static int          msglevel                =MSG_LEVEL_INFO;
  59 //static int          msglevel                =MSG_LEVEL_DEBUG;
  60 /*---------------------  Static Functions  --------------------------*/
  61
  62 /*---------------------  Export Variables  --------------------------*/
  63
  64
  65
  66 /*
  67  * Description:
  68  *      Relay packet.  Return TRUE if packet is copy to DMA1
  69  *
  70  * Parameters:
  71  *  In:
  72  *      pDevice             -
  73  *      pbySkbData          - rx packet skb data
  74  *  Out:
  75  *      TURE, FALSE
  76  *
  77  * Return Value: TRUE if packet duplicate; otherwise FALSE
  78  *
  79  */
  80 BOOL ROUTEbRelay (PSDevice pDevice, PBYTE pbySkbData, UINT uDataLen, UINT uNodeIndex)
  81 {
  82     PSMgmtObject    pMgmt = pDevice->pMgmt;
  83     PSTxDesc        pHeadTD, pLastTD;
  84     UINT            cbFrameBodySize;
  85     UINT            uMACfragNum;
  86     BYTE            byPktTyp;
  87     BOOL            bNeedEncryption = FALSE;
  88     SKeyItem        STempKey;
  89     PSKeyItem       pTransmitKey = NULL;
  90     UINT            cbHeaderSize;
  91     UINT            ii;
  92     PBYTE           pbyBSSID;
  93
  94
  95
  96
  97     if (AVAIL_TD(pDevice, TYPE_AC0DMA)<=0) {
  98         DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_INFO "Relay can't allocate TD1..\n");
  99         return FALSE;
 100     }
 101
 102     pHeadTD = pDevice->apCurrTD[TYPE_AC0DMA];
 103
 104     pHeadTD->m_td1TD1.byTCR = (TCR_EDP|TCR_STP);
 105
 106     memcpy(pDevice->sTxEthHeader.abyDstAddr, (PBYTE)pbySkbData, U_HEADER_LEN);
 107
 108     cbFrameBodySize = uDataLen - U_HEADER_LEN;
 109
 110     if (ntohs(pDevice->sTxEthHeader.wType) > MAX_DATA_LEN) {
 111         cbFrameBodySize += 8;
 112     }
 113
 114     if (pDevice->bEncryptionEnable == TRUE) {
 115         bNeedEncryption = TRUE;
 116
 117         // get group key
 118         pbyBSSID = pDevice->abyBroadcastAddr;
 119         if(KeybGetTransmitKey(&(pDevice->sKey), pbyBSSID, GROUP_KEY, &pTransmitKey) == FALSE) {
 120             pTransmitKey = NULL;
 121             DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_DEBUG"KEY is NULL. [%d]\n", pDevice->pMgmt->eCurrMode);
 122         } else {
 123             DEVICE_PRT(MSG_LEVEL_DEBUG, KERN_DEBUG"Get GTK.\n");
 124         }
 125     }
 126
 127     if (pDevice->bEnableHostWEP) {
 128         if (uNodeIndex >= 0) {
 129             pTransmitKey = &STempKey;
 130             pTransmitKey->byCipherSuite = pMgmt->sNodeDBTable[uNodeIndex].byCipherSuite;
 131             pTransmitKey->dwKeyIndex = pMgmt->sNodeDBTable[uNodeIndex].dwKeyIndex;
 132             pTransmitKey->uKeyLength = pMgmt->sNodeDBTable[uNodeIndex].uWepKeyLength;
 133             pTransmitKey->dwTSC47_16 = pMgmt->sNodeDBTable[uNodeIndex].dwTSC47_16;
 134             pTransmitKey->wTSC15_0 = pMgmt->sNodeDBTable[uNodeIndex].wTSC15_0;
 135             memcpy(pTransmitKey->abyKey,
 136                 &pMgmt->sNodeDBTable[uNodeIndex].abyWepKey[0],
 137                 pTransmitKey->uKeyLength
 138                 );
 139         }
 140     }
 141
 142     uMACfragNum = cbGetFragCount(pDevice, pTransmitKey, cbFrameBodySize, &pDevice->sTxEthHeader);
 143
 144     if (uMACfragNum > AVAIL_TD(pDevice,TYPE_AC0DMA)) {
 145         return FALSE;
 146     }
 147     byPktTyp = (BYTE)pDevice->byPacketType;
 148
 149     if (pDevice->bFixRate) {
 150         if (pDevice->eCurrentPHYType == PHY_TYPE_11B) {
 151             if (pDevice->uConnectionRate >= RATE_11M) {
 152                 pDevice->wCurrentRate = RATE_11M;
 153             } else {
 154                 pDevice->wCurrentRate = (WORD)pDevice->uConnectionRate;
 155             }
 156         } else {
 157             if ((pDevice->eCurrentPHYType == PHY_TYPE_11A) &&
 158                 (pDevice->uConnectionRate <= RATE_6M)) {
 159                 pDevice->wCurrentRate = RATE_6M;
 160             } else {
 161                 if (pDevice->uConnectionRate >= RATE_54M)
 162                     pDevice->wCurrentRate = RATE_54M;
 163                 else
 164                     pDevice->wCurrentRate = (WORD)pDevice->uConnectionRate;
 165             }
 166         }
 167     }
 168     else {
 169         pDevice->wCurrentRate = pDevice->pMgmt->sNodeDBTable[uNodeIndex].wTxDataRate;
 170     }
 171
 172     if (pDevice->wCurrentRate <= RATE_11M)
 173         byPktTyp = PK_TYPE_11B;
 174
 175     vGenerateFIFOHeader(pDevice, byPktTyp, pDevice->pbyTmpBuff, bNeedEncryption,
 176                         cbFrameBodySize, TYPE_AC0DMA, pHeadTD,
 177                         &pDevice->sTxEthHeader, pbySkbData, pTransmitKey, uNodeIndex,
 178                         &uMACfragNum,
 179                         &cbHeaderSize
 180                         );
 181
 182     if (MACbIsRegBitsOn(pDevice->PortOffset, MAC_REG_PSCTL, PSCTL_PS)) {
 183         // Disable PS
 184         MACbPSWakeup(pDevice->PortOffset);
 185     }
 186
 187     pDevice->bPWBitOn = FALSE;
 188
 189     pLastTD = pHeadTD;
 190     for (ii = 0; ii < uMACfragNum; ii++) {
 191         // Poll Transmit the adapter
 192         wmb();
 193         pHeadTD->m_td0TD0.f1Owner=OWNED_BY_NIC;
 194         wmb();
 195         if (ii == (uMACfragNum - 1))
 196             pLastTD = pHeadTD;
 197         pHeadTD = pHeadTD->next;
 198     }
 199
 200     pLastTD->pTDInfo->skb = 0;
 201     pLastTD->pTDInfo->byFlags = 0;
 202
 203     pDevice->apCurrTD[TYPE_AC0DMA] = pHeadTD;
 204
 205     MACvTransmitAC0(pDevice->PortOffset);
 206
 207     return TRUE;
 208 }
 209
 210
 211