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wctl.h
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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 
86 #define ADD_ONE_WITH_WRAP_AROUND(uVar, uModulo) { \
87  if ((uVar) >= ((uModulo) - 1)) \
88  (uVar) = 0; \
89  else \
90  (uVar)++; \
91 }
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__ */
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