if_fc.h

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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, <[email protected]>
 *      Donald Becker, <[email protected]>
 *    Peter De Schrijver, <[email protected]>
 *    Vineet Abraham, <[email protected]>
 *
 *      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

#include <linux/types.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 */
    __be16 ethertype;       /* ether type field */
};

#endif  /* _LINUX_IF_FC_H */