3 * Ether/802.11 conversions and packet buffer routines
5 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
6 * --------------------------------------------------------------------
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/
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.
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.
31 * --------------------------------------------------------------------
33 * Inquiries regarding the linux-wlan Open Source project can be
36 * AbsoluteValue Systems Inc.
38 * http://www.linux-wlan.com
40 * --------------------------------------------------------------------
42 * Portions of the development of this software were funded by
43 * Intersil Corporation as part of PRISM(R) chipset product development.
45 * --------------------------------------------------------------------
47 * This file declares the functions, types and macros that perform
48 * Ethernet to/from 802.11 frame conversions.
50 * --------------------------------------------------------------------
53 #ifndef _LINUX_P80211CONV_H
54 #define _LINUX_P80211CONV_H
56 /*================================================================*/
59 #define WLAN_ETHADDR_LEN 6
60 #define WLAN_IEEE_OUI_LEN 3
62 #define WLAN_ETHCONV_ENCAP 1
63 #define WLAN_ETHCONV_RFC1042 2
64 #define WLAN_ETHCONV_8021h 3
66 #define WLAN_MIN_ETHFRM_LEN 60
67 #define WLAN_MAX_ETHFRM_LEN 1514
68 #define WLAN_ETHHDR_LEN 14
70 #define P80211CAPTURE_VERSION 0x80211001
72 /*================================================================*/
75 #define P80211_FRMMETA_MAGIC 0x802110
77 #define P80211SKB_FRMMETA(s) \
78 (((((p80211_frmmeta_t*)((s)->cb))->magic)==P80211_FRMMETA_MAGIC) ? \
79 ((p80211_frmmeta_t*)((s)->cb)) : \
82 #define P80211SKB_RXMETA(s) \
83 (P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : ((p80211_rxmeta_t*)(NULL)))
85 typedef struct p80211_rxmeta
87 struct wlandevice *wlandev;
89 UINT64 mactime; /* Hi-rez MAC-supplied time value */
90 UINT64 hosttime; /* Best-rez host supplied time value */
92 UINT rxrate; /* Receive data rate in 100kbps */
93 UINT priority; /* 0-15, 0=contention, 6=CF */
94 INT signal; /* An SSI, see p80211netdev.h */
95 INT noise; /* An SSI, see p80211netdev.h */
96 UINT channel; /* Receive channel (mostly for snifs) */
97 UINT preamble; /* P80211ENUM_preambletype_* */
98 UINT encoding; /* P80211ENUM_encoding_* */
102 typedef struct p80211_frmmeta
108 void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
109 int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
110 void p80211skb_rxmeta_detach(struct sk_buff *skb);
112 /*================================================================*/
116 * Frame capture header. (See doc/capturefrm.txt)
118 typedef struct p80211_caphdr
136 /* buffer free method pointer type */
137 typedef void (* freebuf_method_t)(void *buf, int size);
139 typedef struct p80211_metawep {
145 /* local ether header type */
146 typedef struct wlan_ethhdr
148 UINT8 daddr[WLAN_ETHADDR_LEN];
149 UINT8 saddr[WLAN_ETHADDR_LEN];
151 } __WLAN_ATTRIB_PACK__ wlan_ethhdr_t;
153 /* local llc header type */
154 typedef struct wlan_llc
159 } __WLAN_ATTRIB_PACK__ wlan_llc_t;
161 /* local snap header type */
162 typedef struct wlan_snap
164 UINT8 oui[WLAN_IEEE_OUI_LEN];
166 } __WLAN_ATTRIB_PACK__ wlan_snap_t;
168 /* Circular include trick */
171 /*================================================================*/
174 /*================================================================*/
175 /*Function Declarations */
177 int skb_p80211_to_ether( struct wlandevice *wlandev, UINT32 ethconv,
178 struct sk_buff *skb);
179 int skb_ether_to_p80211( struct wlandevice *wlandev, UINT32 ethconv,
180 struct sk_buff *skb, p80211_hdr_t *p80211_hdr,
181 p80211_metawep_t *p80211_wep );
183 int p80211_stt_findproto(UINT16 proto);
184 int p80211_stt_addproto(UINT16 proto);