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 */