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p80211conv.h
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1 /* p80211conv.h
2 *
3 * Ether/802.11 conversions and packet buffer routines
4 *
5 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
6 * --------------------------------------------------------------------
7 *
8 * linux-wlan
9 *
10 * The contents of this file are subject to the Mozilla Public
11 * License Version 1.1 (the "License"); you may not use this file
12 * except in compliance with the License. You may obtain a copy of
13 * the License at http://www.mozilla.org/MPL/
14 *
15 * Software distributed under the License is distributed on an "AS
16 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17 * implied. See the License for the specific language governing
18 * rights and limitations under the License.
19 *
20 * Alternatively, the contents of this file may be used under the
21 * terms of the GNU Public License version 2 (the "GPL"), in which
22 * case the provisions of the GPL are applicable instead of the
23 * above. If you wish to allow the use of your version of this file
24 * only under the terms of the GPL and not to allow others to use
25 * your version of this file under the MPL, indicate your decision
26 * by deleting the provisions above and replace them with the notice
27 * and other provisions required by the GPL. If you do not delete
28 * the provisions above, a recipient may use your version of this
29 * file under either the MPL or the GPL.
30 *
31 * --------------------------------------------------------------------
32 *
33 * Inquiries regarding the linux-wlan Open Source project can be
34 * made directly to:
35 *
36 * AbsoluteValue Systems Inc.
38 * http://www.linux-wlan.com
39 *
40 * --------------------------------------------------------------------
41 *
42 * Portions of the development of this software were funded by
43 * Intersil Corporation as part of PRISM(R) chipset product development.
44 *
45 * --------------------------------------------------------------------
46 *
47 * This file declares the functions, types and macros that perform
48 * Ethernet to/from 802.11 frame conversions.
49 *
50 * --------------------------------------------------------------------
51 */
52 
53 #ifndef _LINUX_P80211CONV_H
54 #define _LINUX_P80211CONV_H
55 
56 #define WLAN_ETHADDR_LEN 6
57 #define WLAN_IEEE_OUI_LEN 3
58 
59 #define WLAN_ETHCONV_ENCAP 1
60 #define WLAN_ETHCONV_8021h 3
61 
62 #define WLAN_ETHHDR_LEN 14
63 
64 #define P80211CAPTURE_VERSION 0x80211001
65 
66 #define P80211_FRMMETA_MAGIC 0x802110
67 
68 #define P80211SKB_FRMMETA(s) \
69  (((((struct p80211_frmmeta *)((s)->cb))->magic) == \
70  P80211_FRMMETA_MAGIC) ? \
71  ((struct p80211_frmmeta *)((s)->cb)) : \
72  (NULL))
73 
74 #define P80211SKB_RXMETA(s) \
75  (P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : \
76  ((struct p80211_rxmeta *)(NULL)))
77 
78 struct p80211_rxmeta {
80 
81  u64 mactime; /* Hi-rez MAC-supplied time value */
82  u64 hosttime; /* Best-rez host supplied time value */
83 
84  unsigned int rxrate; /* Receive data rate in 100kbps */
85  unsigned int priority; /* 0-15, 0=contention, 6=CF */
86  int signal; /* An SSI, see p80211netdev.h */
87  int noise; /* An SSI, see p80211netdev.h */
88  unsigned int channel; /* Receive channel (mostly for snifs) */
89  unsigned int preamble; /* P80211ENUM_preambletype_* */
90  unsigned int encoding; /* P80211ENUM_encoding_* */
91 
92 };
93 
95  unsigned int magic;
96  struct p80211_rxmeta *rx;
97 };
98 
99 void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
101 void p80211skb_rxmeta_detach(struct sk_buff *skb);
102 
103 /*
104  * Frame capture header. (See doc/capturefrm.txt)
105  */
121 };
122 
123 /* buffer free method pointer type */
124 typedef void (*freebuf_method_t) (void *buf, int size);
125 
127  void *data;
128  u8 iv[4];
129  u8 icv[4];
130 };
131 
132 /* local ether header type */
133 struct wlan_ethhdr {
137 } __packed;
138 
139 /* local llc header type */
140 struct wlan_llc {
144 } __packed;
145 
146 /* local snap header type */
147 struct wlan_snap {
150 } __packed;
151 
152 /* Circular include trick */
153 struct wlandevice;
154 
155 int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
156  struct sk_buff *skb);
157 int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
158  struct sk_buff *skb, union p80211_hdr *p80211_hdr,
159  struct p80211_metawep *p80211_wep);
160 
162 
163 #endif