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_IEEE_OUI_LEN       3
  57
  58#define WLAN_ETHCONV_ENCAP      1
  59#define WLAN_ETHCONV_8021h      3
  60
  61#define P80211CAPTURE_VERSION   0x80211001
  62
  63#define P80211_FRMMETA_MAGIC    0x802110
  64
  65#define P80211SKB_FRMMETA(s) \
  66        (((((struct p80211_frmmeta *)((s)->cb))->magic) == \
  67                P80211_FRMMETA_MAGIC) ? \
  68                ((struct p80211_frmmeta *)((s)->cb)) : \
  69                (NULL))
  70
  71#define P80211SKB_RXMETA(s) \
  72        (P80211SKB_FRMMETA((s)) ?  P80211SKB_FRMMETA((s))->rx : \
  73                ((struct p80211_rxmeta *)(NULL)))
  74
  75struct p80211_rxmeta {
  76        struct wlandevice *wlandev;
  77
  78        u64 mactime;            /* Hi-rez MAC-supplied time value */
  79        u64 hosttime;           /* Best-rez host supplied time value */
  80
  81        unsigned int rxrate;    /* Receive data rate in 100kbps */
  82        unsigned int priority;  /* 0-15, 0=contention, 6=CF */
  83        int signal;             /* An SSI, see p80211netdev.h */
  84        int noise;              /* An SSI, see p80211netdev.h */
  85        unsigned int channel;   /* Receive channel (mostly for snifs) */
  86        unsigned int preamble;  /* P80211ENUM_preambletype_* */
  87        unsigned int encoding;  /* P80211ENUM_encoding_* */
  88
  89};
  90
  91struct p80211_frmmeta {
  92        unsigned int magic;
  93        struct p80211_rxmeta *rx;
  94};
  95
  96void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
  97int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
  98void p80211skb_rxmeta_detach(struct sk_buff *skb);
  99
 100/*
 101 * Frame capture header.  (See doc/capturefrm.txt)
 102 */
 103struct p80211_caphdr {
 104        __be32 version;
 105        __be32 length;
 106        __be64 mactime;
 107        __be64 hosttime;
 108        __be32 phytype;
 109        __be32 channel;
 110        __be32 datarate;
 111        __be32 antenna;
 112        __be32 priority;
 113        __be32 ssi_type;
 114        __be32 ssi_signal;
 115        __be32 ssi_noise;
 116        __be32 preamble;
 117        __be32 encoding;
 118};
 119
 120/* buffer free method pointer type */
 121typedef void (*freebuf_method_t) (void *buf, int size);
 122
 123struct p80211_metawep {
 124        void *data;
 125        u8 iv[4];
 126        u8 icv[4];
 127};
 128
 129/* local ether header type */
 130struct wlan_ethhdr {
 131        u8 daddr[ETH_ALEN];
 132        u8 saddr[ETH_ALEN];
 133        __be16 type;
 134} __packed;
 135
 136/* local llc header type */
 137struct wlan_llc {
 138        u8 dsap;
 139        u8 ssap;
 140        u8 ctl;
 141} __packed;
 142
 143/* local snap header type */
 144struct wlan_snap {
 145        u8 oui[WLAN_IEEE_OUI_LEN];
 146        __be16 type;
 147} __packed;
 148
 149/* Circular include trick */
 150struct wlandevice;
 151
 152int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
 153                        struct sk_buff *skb);
 154int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
 155                        struct sk_buff *skb, union p80211_hdr *p80211_hdr,
 156                        struct p80211_metawep *p80211_wep);
 157
 158int p80211_stt_findproto(u16 proto);
 159
 160#endif
 161