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*
* 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
/*================================================================*/
/* Constants */
#define WLAN_ETHADDR_LEN 6
#define WLAN_IEEE_OUI_LEN 3
#define WLAN_ETHCONV_ENCAP 1
#define WLAN_ETHCONV_RFC1042 2
#define WLAN_ETHCONV_8021h 3
#define WLAN_MIN_ETHFRM_LEN 60
#define WLAN_MAX_ETHFRM_LEN 1514
#define WLAN_ETHHDR_LEN 14
#define P80211CAPTURE_VERSION 0x80211001
/*================================================================*/
/* Macros */
#define P80211_FRMMETA_MAGIC 0x802110
#define P80211SKB_FRMMETA(s) \
(((((p80211_frmmeta_t*)((s)->cb))->magic)==P80211_FRMMETA_MAGIC) ? \
((p80211_frmmeta_t*)((s)->cb)) : \
(NULL))
#define P80211SKB_RXMETA(s) \
(P80211SKB_FRMMETA((s)) ? P80211SKB_FRMMETA((s))->rx : ((p80211_rxmeta_t*)(NULL)))
typedef struct p80211_rxmeta
{
struct wlandevice *wlandev;
UINT64 mactime; /* Hi-rez MAC-supplied time value */
UINT64 hosttime; /* Best-rez host supplied time value */
UINT rxrate; /* Receive data rate in 100kbps */
UINT priority; /* 0-15, 0=contention, 6=CF */
INT signal; /* An SSI, see p80211netdev.h */
INT noise; /* An SSI, see p80211netdev.h */
UINT channel; /* Receive channel (mostly for snifs) */
UINT preamble; /* P80211ENUM_preambletype_* */
UINT encoding; /* P80211ENUM_encoding_* */
} p80211_rxmeta_t;
typedef struct p80211_frmmeta
{
UINT magic;
p80211_rxmeta_t *rx;
} p80211_frmmeta_t;
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);
/*================================================================*/
/* Types */
/*
* Frame capture header. (See doc/capturefrm.txt)
*/
typedef struct p80211_caphdr
{
UINT32 version;
UINT32 length;
UINT64 mactime;
UINT64 hosttime;
UINT32 phytype;
UINT32 channel;
UINT32 datarate;
UINT32 antenna;
UINT32 priority;
UINT32 ssi_type;
INT32 ssi_signal;
INT32 ssi_noise;
UINT32 preamble;
UINT32 encoding;
} p80211_caphdr_t;
/* buffer free method pointer type */
typedef void (* freebuf_method_t)(void *buf, int size);
typedef struct p80211_metawep {
void *data;
UINT8 iv[4];
UINT8 icv[4];
} p80211_metawep_t;
/* local ether header type */
typedef struct wlan_ethhdr
{
UINT8 daddr[WLAN_ETHADDR_LEN];
UINT8 saddr[WLAN_ETHADDR_LEN];
UINT16 type;
} __WLAN_ATTRIB_PACK__ wlan_ethhdr_t;
/* local llc header type */
typedef struct wlan_llc
{
UINT8 dsap;
UINT8 ssap;
UINT8 ctl;
} __WLAN_ATTRIB_PACK__ wlan_llc_t;
/* local snap header type */
typedef struct wlan_snap
{
UINT8 oui[WLAN_IEEE_OUI_LEN];
UINT16 type;
} __WLAN_ATTRIB_PACK__ wlan_snap_t;
/* Circular include trick */
struct wlandevice;
/*================================================================*/
/* Externs */
/*================================================================*/
/*Function Declarations */
int skb_p80211_to_ether( struct wlandevice *wlandev, UINT32 ethconv,
struct sk_buff *skb);
int skb_ether_to_p80211( struct wlandevice *wlandev, UINT32 ethconv,
struct sk_buff *skb, p80211_hdr_t *p80211_hdr,
p80211_metawep_t *p80211_wep );
int p80211_stt_findproto(UINT16 proto);
int p80211_stt_addproto(UINT16 proto);
#endif
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