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/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              Global definitions for Fibre Channel.
 *
 * Version:     @(#)if_fc.h     0.0     11/20/98
 *
 * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *              Donald Becker, <becker@super.org>
 *    Peter De Schrijver, <stud11@cc4.kuleuven.ac.be>
 *        Vineet Abraham, <vma@iol.unh.edu>
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */
#ifndef _LINUX_IF_FC_H
#define _LINUX_IF_FC_H


#define FC_ALEN 6               /* Octets in one ethernet addr   */
#define FC_HLEN   (sizeof(struct fch_hdr)+sizeof(struct fcllc))
#define FC_ID_LEN 3             /* Octets in a Fibre Channel Address */

/* LLC and SNAP constants */
#define EXTENDED_SAP 0xAA
#define UI_CMD       0x03

/* This is NOT the Fibre Channel frame header. The FC frame header is
 *  constructed in the driver as the Tachyon needs certain fields in
 *  certains positions. So, it can't be generalized here.*/

struct fch_hdr {
        __u8  daddr[FC_ALEN];           /* destination address */
        __u8  saddr[FC_ALEN];           /* source address */
};

/* This is a Fibre Channel LLC structure */
struct fcllc {
        __u8  dsap;                     /* destination SAP */
        __u8  ssap;                     /* source SAP */
        __u8  llc;                      /* LLC control field */
        __u8  protid[3];                /* protocol id */
        __u16 ethertype;                /* ether type field */
};

#endif  /* _LINUX_IF_FC_H */