LXR linux/drivers/staging/wlan-ng/p80211conv.h

   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.
  37* info@linux-wlan.com
  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
  78struct p80211_rxmeta {
  79        struct wlandevice *wlandev;
  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
  94struct p80211_frmmeta {
  95        unsigned int magic;
  96        struct p80211_rxmeta *rx;
  97};
  98
  99void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
 100int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
 101void p80211skb_rxmeta_detach(struct sk_buff *skb);
 102
 103/*
 104 * Frame capture header.  (See doc/capturefrm.txt)
 105 */
 106struct p80211_caphdr {
 107        u32 version;
 108        u32 length;
 109        u64 mactime;
 110        u64 hosttime;
 111        u32 phytype;
 112        u32 channel;
 113        u32 datarate;
 114        u32 antenna;
 115        u32 priority;
 116        u32 ssi_type;
 117        s32 ssi_signal;
 118        s32 ssi_noise;
 119        u32 preamble;
 120        u32 encoding;
 121};
 122
 123/* buffer free method pointer type */
 124typedef void (*freebuf_method_t) (void *buf, int size);
 125
 126struct p80211_metawep {
 127        void *data;
 128        u8 iv[4];
 129        u8 icv[4];
 130};
 131
 132/* local ether header type */
 133struct wlan_ethhdr {
 134        u8 daddr[WLAN_ETHADDR_LEN];
 135        u8 saddr[WLAN_ETHADDR_LEN];
 136        u16 type;
 137} __packed;
 138
 139/* local llc header type */
 140struct wlan_llc {
 141        u8 dsap;
 142        u8 ssap;
 143        u8 ctl;
 144} __packed;
 145
 146/* local snap header type */
 147struct wlan_snap {
 148        u8 oui[WLAN_IEEE_OUI_LEN];
 149        u16 type;
 150} __packed;
 151
 152/* Circular include trick */
 153struct wlandevice;
 154
 155int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
 156                        struct sk_buff *skb);
 157int 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
 161int p80211_stt_findproto(u16 proto);
 162
 163#endif
 164