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)		\
86do {							\
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
99bool WCTLbIsDuplicate(PSCache pCache, PS802_11Header pMACHeader);
100bool WCTLbHandleFragment(struct vnt_private *, PS802_11Header pMACHeader,
101			 unsigned int cbFrameLength, bool bWEP, bool bExtIV);
102unsigned int WCTLuSearchDFCB(struct vnt_private *, PS802_11Header pMACHeader);
103unsigned int WCTLuInsertDFCB(struct vnt_private *, PS802_11Header pMACHeader);
104
105#endif // __WCTL_H__
106