drivers/staging/vt6655/wctl.h

   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: wctl.h
  20  *
  21  * Purpose:
  22  *
  23  * Author: Jerry Chen
  24  *
  25  * Date: Jun. 27, 2002
  26  *
  27  */
  28
  29 #ifndef __WCTL_H__
  30 #define __WCTL_H__
  31
  32 #include "ttype.h"
  33 #include "tether.h"
  34 #include "device.h"
  35
  36 /*---------------------  Export Definitions -------------------------*/
  37
  38 #define IS_TYPE_DATA(pMACHeader)                                        \
  39         ((((PS802_11Header) pMACHeader)->wFrameCtl & TYPE_802_11_MASK) == TYPE_802_11_DATA)
  40
  41 #define IS_TYPE_MGMT(pMACHeader)                                        \
  42         ((((PS802_11Header) pMACHeader)->wFrameCtl & TYPE_802_11_MASK) == TYPE_802_11_MGMT)
  43
  44 #define IS_TYPE_CONTROL(pMACHeader)                                     \
  45         ((((PS802_11Header) pMACHeader)->wFrameCtl & TYPE_802_11_MASK) == TYPE_802_11_CTL)
  46
  47 #define IS_FC_MOREDATA(pMACHeader)                                      \
  48         ((((PS802_11Header) pMACHeader)->wFrameCtl & FC_MOREDATA) == FC_MOREDATA)
  49
  50 #define IS_FC_POWERMGT(pMACHeader)                                      \
  51         ((((PS802_11Header) pMACHeader)->wFrameCtl & FC_POWERMGT) == FC_POWERMGT)
  52
  53 #define IS_FC_RETRY(pMACHeader)                                         \
  54         ((((PS802_11Header) pMACHeader)->wFrameCtl & FC_RETRY) == FC_RETRY)
  55
  56 #define IS_FC_WEP(pMACHeader)                                           \
  57         ((((PS802_11Header) pMACHeader)->wFrameCtl & FC_WEP) == FC_WEP)
  58
  59 #ifdef __BIG_ENDIAN
  60
  61 #define IS_FRAGMENT_PKT(pMACHeader)                                     \
  62         (((((PS802_11Header) pMACHeader)->wFrameCtl & FC_MOREFRAG) != 0) | \
  63          ((((PS802_11Header) pMACHeader)->wSeqCtl & 0x0F00) != 0))
  64
  65 #define IS_FIRST_FRAGMENT_PKT(pMACHeader)                               \
  66         ((((PS802_11Header) pMACHeader)->wSeqCtl & 0x0F00) == 0)
  67
  68 #else
  69
  70 #define IS_FRAGMENT_PKT(pMACHeader)                                     \
  71         (((((PS802_11Header) pMACHeader)->wFrameCtl & FC_MOREFRAG) != 0) | \
  72          ((((PS802_11Header) pMACHeader)->wSeqCtl & 0x000F) != 0))
  73
  74 #define IS_FIRST_FRAGMENT_PKT(pMACHeader)                               \
  75         ((((PS802_11Header) pMACHeader)->wSeqCtl & 0x000F) == 0)
  76
  77 #endif//#ifdef __BIG_ENDIAN
  78
  79 #define IS_LAST_FRAGMENT_PKT(pMACHeader)                                \
  80         ((((PS802_11Header) pMACHeader)->wFrameCtl & FC_MOREFRAG) == 0)
  81
  82 #define IS_CTL_PSPOLL(pMACHeader)                                       \
  83         ((((PS802_11Header) pMACHeader)->wFrameCtl & TYPE_SUBTYPE_MASK) == TYPE_CTL_PSPOLL)
  84
  85 #define ADD_ONE_WITH_WRAP_AROUND(uVar, uModulo)         \
  86 do {                                                    \
  87         if ((uVar) >= ((uModulo) - 1))                  \
  88                 (uVar) = 0;                             \
  89         else                                            \
  90                 (uVar)++;                               \
  91 } while (0)
  92
  93 /*---------------------  Export Classes  ----------------------------*/
  94
  95 /*---------------------  Export Variables  --------------------------*/
  96
  97 /*---------------------  Export Functions  --------------------------*/
  98
  99 bool WCTLbIsDuplicate(PSCache pCache, PS802_11Header pMACHeader);
 100 bool WCTLbHandleFragment(PSDevice pDevice, PS802_11Header pMACHeader,
 101                          unsigned int cbFrameLength, bool bWEP, bool bExtIV);
 102 unsigned int WCTLuSearchDFCB(PSDevice pDevice, PS802_11Header pMACHeader);
 103 unsigned int WCTLuInsertDFCB(PSDevice pDevice, PS802_11Header pMACHeader);
 104
 105 #endif // __WCTL_H__