1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 * INET		An implementation of the TCP/IP protocol suite for the LINUX
4 *		operating system.  INET is implemented using the  BSD Socket
5 *		interface as the means of communication with the user level.
6 *
7 *		Global definitions for Fibre Channel.
8 *
9 * Version:	@(#)if_fc.h	0.0	11/20/98
10 *
11 * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 *		Donald Becker, <becker@super.org>
13 *    Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
14 *	  Vineet Abraham, <vma@iol.unh.edu>
15 *
16 *		This program is free software; you can redistribute it and/or
17 *		modify it under the terms of the GNU General Public License
18 *		as published by the Free Software Foundation; either version
19 *		2 of the License, or (at your option) any later version.
20 */
21#ifndef _LINUX_IF_FC_H
22#define _LINUX_IF_FC_H
23
24#include <linux/types.h>
25
26#define FC_ALEN	6		/* Octets in one ethernet addr	 */
27#define FC_HLEN   (sizeof(struct fch_hdr)+sizeof(struct fcllc))
28#define FC_ID_LEN 3		/* Octets in a Fibre Channel Address */
29
30/* LLC and SNAP constants */
31#define EXTENDED_SAP 0xAA
32#define UI_CMD       0x03
33
34/* This is NOT the Fibre Channel frame header. The FC frame header is
35 *  constructed in the driver as the Tachyon needs certain fields in
36 *  certains positions. So, it can't be generalized here.*/
37
38struct fch_hdr {
39	__u8  daddr[FC_ALEN];		/* destination address */
40	__u8  saddr[FC_ALEN];		/* source address */
41};
42
43/* This is a Fibre Channel LLC structure */
44struct fcllc {
45	__u8  dsap;			/* destination SAP */
46	__u8  ssap;			/* source SAP */
47	__u8  llc;			/* LLC control field */
48	__u8  protid[3];		/* protocol id */
49	__be16 ethertype;		/* ether type field */
50};
51
52#endif	/* _LINUX_IF_FC_H */
53