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         (((((p80211_frmmeta_t *)((s)->cb))->magic) == P80211_FRMMETA_MAGIC) ? \
  70                 ((p80211_frmmeta_t *)((s)->cb)) : \
  71                 (NULL))
  72
  73 #define P80211SKB_RXMETA(s) \
  74         (P80211SKB_FRMMETA((s)) ?  P80211SKB_FRMMETA((s))->rx : ((p80211_rxmeta_t *)(NULL)))
  75
  76 typedef struct p80211_rxmeta {
  77         struct wlandevice *wlandev;
  78
  79         u64 mactime;            /* Hi-rez MAC-supplied time value */
  80         u64 hosttime;           /* Best-rez host supplied time value */
  81
  82         unsigned int rxrate;    /* Receive data rate in 100kbps */
  83         unsigned int priority;  /* 0-15, 0=contention, 6=CF */
  84         int signal;             /* An SSI, see p80211netdev.h */
  85         int noise;              /* An SSI, see p80211netdev.h */
  86         unsigned int channel;   /* Receive channel (mostly for snifs) */
  87         unsigned int preamble;  /* P80211ENUM_preambletype_* */
  88         unsigned int encoding;  /* P80211ENUM_encoding_* */
  89
  90 } p80211_rxmeta_t;
  91
  92 typedef struct p80211_frmmeta {
  93         unsigned int magic;
  94         p80211_rxmeta_t *rx;
  95 } p80211_frmmeta_t;
  96
  97 void p80211skb_free(struct wlandevice *wlandev, struct sk_buff *skb);
  98 int p80211skb_rxmeta_attach(struct wlandevice *wlandev, struct sk_buff *skb);
  99 void p80211skb_rxmeta_detach(struct sk_buff *skb);
 100
 101 /*
 102  * Frame capture header.  (See doc/capturefrm.txt)
 103  */
 104 typedef struct p80211_caphdr {
 105         u32 version;
 106         u32 length;
 107         u64 mactime;
 108         u64 hosttime;
 109         u32 phytype;
 110         u32 channel;
 111         u32 datarate;
 112         u32 antenna;
 113         u32 priority;
 114         u32 ssi_type;
 115         s32 ssi_signal;
 116         s32 ssi_noise;
 117         u32 preamble;
 118         u32 encoding;
 119 } p80211_caphdr_t;
 120
 121 /* buffer free method pointer type */
 122 typedef void (*freebuf_method_t) (void *buf, int size);
 123
 124 typedef struct p80211_metawep {
 125         void *data;
 126         u8 iv[4];
 127         u8 icv[4];
 128 } p80211_metawep_t;
 129
 130 /* local ether header type */
 131 typedef struct wlan_ethhdr {
 132         u8 daddr[WLAN_ETHADDR_LEN];
 133         u8 saddr[WLAN_ETHADDR_LEN];
 134         u16 type;
 135 } __attribute__ ((packed)) wlan_ethhdr_t;
 136
 137 /* local llc header type */
 138 typedef struct wlan_llc {
 139         u8 dsap;
 140         u8 ssap;
 141         u8 ctl;
 142 } __attribute__ ((packed)) wlan_llc_t;
 143
 144 /* local snap header type */
 145 typedef struct wlan_snap {
 146         u8 oui[WLAN_IEEE_OUI_LEN];
 147         u16 type;
 148 } __attribute__ ((packed)) wlan_snap_t;
 149
 150 /* Circular include trick */
 151 struct wlandevice;
 152
 153 int skb_p80211_to_ether(struct wlandevice *wlandev, u32 ethconv,
 154                         struct sk_buff *skb);
 155 int skb_ether_to_p80211(struct wlandevice *wlandev, u32 ethconv,
 156                         struct sk_buff *skb, p80211_hdr_t * p80211_hdr,
 157                         p80211_metawep_t * p80211_wep);
 158
 159 int p80211_stt_findproto(u16 proto);
 160
 161 #endif