summaryrefslogtreecommitdiffstats
path: root/drivers/staging/wlan-ng/p80211conv.h
blob: e031a74d2ad44aa5a11746927af892977f70e4b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/* p80211conv.h
*
* Ether/802.11 conversions and packet buffer routines
*
* Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
* --------------------------------------------------------------------
*
* linux-wlan
*
*   The contents of this file are subject to the Mozilla Public
*   License Version 1.1 (the "License"); you may not use this file
*   except in compliance with the License. You may obtain a copy of
*   the License at http://www.mozilla.org/MPL/
*
*   Software distributed under the License is distributed on an "AS
*   IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
*   implied. See the License for the specific language governing
*   rights and limitations under the License.
*
*   Alternatively, the contents of this file may be used under the
*   terms of the GNU Public License version 2 (the "GPL"), in which
*   case the provisions of the GPL are applicable instead of the
*   above.  If you wish to allow the use of your version of this file
*   only under the terms of the GPL and not to allow others to use
*   your version of this file under the MPL, indicate your decision
*   by deleting the provisions above and replace them with the notice
*   and other provisions required by the GPL.  If you do not delete
*   the provisions above, a recipient may use your version of this
*   file under either the MPL or the GPL.
*
* --------------------------------------------------------------------
*
* Inquiries regarding the linux-wlan Open Source project can be
* made directly to:
*
* AbsoluteValue Systems Inc.
* info@linux-wlan.com
* http://www.linux-wlan.com
*
* --------------------------------------------------------------------
*
* Portions of the development of this software were funded by
* Intersil Corporation as part of PRISM(R) chipset product development.
*
* --------------------------------------------------------------------
*
* This file declares the functions, types and macros that perform
* Ethernet to/from 802.11 frame conversions.
*
* --------------------------------------------------------------------
*/

#ifndef _LINUX_P80211CONV_H
#define _LINUX_P80211CONV_H

#define WLAN_ETHADDR_LEN	6
#define WLAN_IEEE_OUI_LEN	3

#define WLAN_ETHCONV_ENCAP	1
#define WLAN_ETHCONV_8021h	3

#define WLAN_ETHHDR_LEN		14

#define P80211CAPTURE_VERSION	0x80211001

#define	P80211_FRMMETA_MAGIC	0x802110

#define P80211SKB_FRMMETA(s) \
	(((((struct p80211_frmmeta *)((s)->cb))->magic) == \
		P80211_FRMMETA_MAGIC) ? \
		((struct p80211_frmmeta *)((s)->cb)) : \
		(NULL))

#define P80211SKB_RXMETA(s) \
	(P80211SKB_FRMMETA((s)) ?  P80211SKB_FRMMETA((s))->rx : \
		((struct p80211_rxmeta *)(NULL)))

struct p80211_rxmeta {
	struct wlandevice *wlandev;

	u64 mactime;		/* Hi-rez MAC-supplied time value */
	u64 hosttime;		/* Best-rez host supplied time value */

	unsigned int rxrate;	/* Receive data rate in 100kbps */
	unsigned int priority;	/* 0-15, 0=contention, 6=CF */
	int signal;		/* An SSI, see p80211netdev.h */
	int noise;		/* An SSI, see p80211netdev.h */
	unsigned int channel;	/* Receive channel (mostly for snifs) */
	unsigned int preamble;	/* P80211ENUM_preambletype_* */
	unsigned int encoding;	/* P80211ENUM_encoding_* */

};

struct p80211_frmmeta {
	unsigned int magic;
	struct p80211_rxmeta *rx;
};

void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
void p80211skb_rxmeta_detach(struct sk_buff *skb);

/*
 * Frame capture header.  (See doc/capturefrm.txt)
 */
struct p80211_caphdr {
	u32 version;
	u32 length;
	u64 mactime;
	u64 hosttime;
	u32 phytype;
	u32 channel;
	u32 datarate;
	u32 antenna;
	u32 priority;
	u32 ssi_type;
	s32 ssi_signal;
	s32 ssi_noise;
	u32 preamble;
	u32 encoding;
};

/* buffer free method pointer type */
typedef void (*freebuf_method_t) (void *buf, int size);

struct p80211_metawep {
	void *data;
	u8 iv[4];
	u8 icv[4];
};

/* local ether header type */
struct wlan_ethhdr {
	u8 daddr[WLAN_ETHADDR_LEN];
	u8 saddr[WLAN_ETHADDR_LEN];
	u16 type;
} __packed;

/* local llc header type */
struct wlan_llc {
	u8 dsap;
	u8 ssap;
	u8 ctl;
} __packed;

/* local snap header type */
struct wlan_snap {
	u8 oui[WLAN_IEEE_OUI_LEN];
	u16 type;
} __packed;

/* Circular include trick */
struct wlandevice;

int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
			struct sk_buff *skb);
int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
			struct sk_buff *skb, union p80211_hdr *p80211_hdr,
			struct p80211_metawep *p80211_wep);

int p80211_stt_findproto(u16 proto);

#endif