1 /* 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * Fundamental constants relating to FireWire network device. 30 */ 31 32 #ifndef _NET_FIREWIRE_H_ 33 #define _NET_FIREWIRE_H_ 34 35 #include <sys/appleapiopts.h> 36 37 /* 38 * The number of bytes in a FireWire EUI-64. 39 */ 40 #define FIREWIRE_EUI64_LEN 8 41 42 /* 43 * The number of bytes in the type field. 44 */ 45 #define FIREWIRE_TYPE_LEN 2 46 47 /* 48 * The length of the header provided by the FireWire network device. 49 */ 50 #define FIREWIRE_HDR_LEN (FIREWIRE_EUI64_LEN*2+FIREWIRE_TYPE_LEN) 51 52 /* 53 * The minimum packet length. 54 */ 55 #define FIREWIRE_MIN_LEN 64 56 57 /* 58 * The maximum packet length. 59 */ 60 #define FIREWIRE_MAX_LEN 4096 61 62 /* 63 * A macro to validate a length with 64 */ 65 #define FIREWIRE_IS_VALID_LEN(foo) \ 66 ((foo) >= FIREWIRE_MIN_LEN && (foo) <= FIREWIRE_MAX_LEN) 67 68 /* 69 * Structure of header provided by the FireWire network device. 70 * 71 * The device uses a simplified header with just the non-changing 72 * EUI-64 addresses and ethernet type specified; 73 */ 74 struct firewire_header { 75 u_char firewire_dhost[FIREWIRE_EUI64_LEN]; 76 u_char firewire_shost[FIREWIRE_EUI64_LEN]; 77 u_short firewire_type; /* ethertype */ 78 }; 79 80 /* 81 * Format of FireWire EUI-64. 82 */ 83 struct firewire_eui64 { 84 u_char octet[FIREWIRE_EUI64_LEN]; 85 }; 86 87 /* 88 * Format of FireWire hardware address. 89 */ 90 struct firewire_address { 91 u_char eui64[FIREWIRE_EUI64_LEN]; 92 u_char maxRec; 93 u_char spd; 94 u_int16_t unicastFifoHi; 95 u_int32_t unicastFifoLo; 96 }; 97 98 #define FIREWIRE_ADDR_LEN 16 /* sizeof(struct firewire_address) */ 99 100 101 #define FIREWIRE_MTU (FIREWIRE_MAX_LEN - FIREWIRE_HDR_LEN) 102 #define FIREWIRE_MIN (FIREWIRE_MIN_LEN - FIREWIRE_HDR_LEN) 103 104 #endif /* !_NET_FIREWIRE_H_ */ 105