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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Global definitions for Fibre Channel.
7 *
8 * Version: @(#)if_fc.h 0.0 11/20/98
9 *
10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
11 * Donald Becker, <becker@super.org>
12 * Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
13 * Vineet Abraham, <vma@iol.unh.edu>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 */
20#ifndef _LINUX_IF_FC_H
21#define _LINUX_IF_FC_H
22
Jaswinder Singh Rajputba7161382009-01-30 21:26:35 +053023#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
25#define FC_ALEN 6 /* Octets in one ethernet addr */
26#define FC_HLEN (sizeof(struct fch_hdr)+sizeof(struct fcllc))
27#define FC_ID_LEN 3 /* Octets in a Fibre Channel Address */
28
29/* LLC and SNAP constants */
30#define EXTENDED_SAP 0xAA
31#define UI_CMD 0x03
32
33/* This is NOT the Fibre Channel frame header. The FC frame header is
34 * constructed in the driver as the Tachyon needs certain fields in
35 * certains positions. So, it can't be generalized here.*/
36
37struct fch_hdr {
38 __u8 daddr[FC_ALEN]; /* destination address */
39 __u8 saddr[FC_ALEN]; /* source address */
40};
41
42/* This is a Fibre Channel LLC structure */
43struct fcllc {
44 __u8 dsap; /* destination SAP */
45 __u8 ssap; /* source SAP */
46 __u8 llc; /* LLC control field */
47 __u8 protid[3]; /* protocol id */
Alexey Dobriyan57bf1452005-08-25 16:06:19 -070048 __be16 ethertype; /* ether type field */
Linus Torvalds1da177e2005-04-16 15:20:36 -070049};
50
51#endif /* _LINUX_IF_FC_H */