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