linux/include/linux/if_fc.h
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   1/*
   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
  23#include <linux/types.h>
  24
  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 */
  48        __be16 ethertype;               /* ether type field */
  49};
  50
  51#endif  /* _LINUX_IF_FC_H */
  52
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