bsd/net/firewire.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Fundamental constants relating to FireWire network device.
  24  */
  25
  26 #ifndef _NET_FIREWIRE_H_
  27 #define _NET_FIREWIRE_H_
  28
  29 #include <sys/appleapiopts.h>
  30
  31 /*
  32  * The number of bytes in a FireWire EUI-64.
  33  */
  34 #define FIREWIRE_EUI64_LEN              8
  35
  36 /*
  37  * The number of bytes in the type field.
  38  */
  39 #define FIREWIRE_TYPE_LEN               2
  40
  41 /*
  42  * The length of the header provided by the FireWire network device.
  43  */
  44 #define FIREWIRE_HDR_LEN                (FIREWIRE_EUI64_LEN*2+FIREWIRE_TYPE_LEN)
  45
  46 /*
  47  * The minimum packet length.
  48  */
  49 #define FIREWIRE_MIN_LEN                64
  50
  51 /*
  52  * The maximum packet length.
  53  */
  54 #define FIREWIRE_MAX_LEN                4096
  55
  56 /*
  57  * A macro to validate a length with
  58  */
  59 #define FIREWIRE_IS_VALID_LEN(foo)      \
  60         ((foo) >= FIREWIRE_MIN_LEN && (foo) <= FIREWIRE_MAX_LEN)
  61
  62 /*
  63  * Structure of header provided by the FireWire network device.
  64  *
  65  * The device uses a simplified header with just the non-changing
  66  * EUI-64 addresses and ethernet type specified;
  67  */
  68 struct  firewire_header {
  69         u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
  70         u_char  firewire_shost[FIREWIRE_EUI64_LEN];
  71         u_short firewire_type;          /* ethertype */
  72 };
  73
  74 /*
  75  * Format of FireWire EUI-64.
  76  */
  77 struct  firewire_eui64 {
  78         u_char octet[FIREWIRE_EUI64_LEN];
  79 };
  80
  81 /*
  82  * Format of FireWire hardware address.
  83  */
  84 struct firewire_address {
  85     u_char      eui64[FIREWIRE_EUI64_LEN];
  86     u_char      maxRec;
  87     u_char      spd;
  88     u_int16_t   unicastFifoHi;
  89     u_int32_t   unicastFifoLo;
  90 };
  91
  92 #define FIREWIRE_ADDR_LEN       16      /* sizeof(struct firewire_address) */
  93
  94
  95 #define FIREWIRE_MTU    (FIREWIRE_MAX_LEN - FIREWIRE_HDR_LEN)
  96 #define FIREWIRE_MIN    (FIREWIRE_MIN_LEN - FIREWIRE_HDR_LEN)
  97
  98 #endif /* !_NET_FIREWIRE_H_ */