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
  75 struct 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
  91 struct p80211_frmmeta {
  92         unsigned int magic;
  93         struct p80211_rxmeta *rx;
  94 };
  95
  96 void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
  97 int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
  98 void p80211skb_rxmeta_detach(struct sk_buff *skb);
  99
 100 /*
 101  * Frame capture header.  (See doc/capturefrm.txt)
 102  */
 103 struct p80211_caphdr {
 104         u32 version;
 105         u32 length;
 106         u64 mactime;
 107         u64 hosttime;
 108         u32 phytype;
 109         u32 channel;
 110         u32 datarate;
 111         u32 antenna;
 112         u32 priority;
 113         u32 ssi_type;
 114         s32 ssi_signal;
 115         s32 ssi_noise;
 116         u32 preamble;
 117         u32 encoding;
 118 };
 119
 120 /* buffer free method pointer type */
 121 typedef void (*freebuf_method_t) (void *buf, int size);
 122
 123 struct p80211_metawep {
 124         void *data;
 125         u8 iv[4];
 126         u8 icv[4];
 127 };
 128
 129 /* local ether header type */
 130 struct wlan_ethhdr {
 131         u8 daddr[ETH_ALEN];
 132         u8 saddr[ETH_ALEN];
 133         u16 type;
 134 } __packed;
 135
 136 /* local llc header type */
 137 struct wlan_llc {
 138         u8 dsap;
 139         u8 ssap;
 140         u8 ctl;
 141 } __packed;
 142
 143 /* local snap header type */
 144 struct wlan_snap {
 145         u8 oui[WLAN_IEEE_OUI_LEN];
 146         u16 type;
 147 } __packed;
 148
 149 /* Circular include trick */
 150 struct wlandevice;
 151
 152 int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
 153                         struct sk_buff *skb);
 154 int 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
 158 int p80211_stt_findproto(u16 proto);
 159
 160 #endif