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 { |
75 | u_char [FIREWIRE_EUI64_LEN]; |
76 | u_char [FIREWIRE_EUI64_LEN]; |
77 | u_short ; /* 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 | |