iscsi-protocol.h

ISCSI user client software.Client would be used to access the IPSAN server.

/*
 * iSCSI driver for Linux
 * Copyright (C) 2001 Cisco Systems, Inc.
 * maintained by [e-mail]
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * See the file COPYING included with this distribution for more details.
 *
 * $Id: iscsi-protocol.h,v 1.12 2005/01/11 03:47:11 mikenc Exp $ 
 *
 * This file sets up definitions of messages and constants used by the
 * iSCSI protocol.
 */
#ifndef ISCSI_PROTOCOL_H_
#define ISCSI_PROTOCOL_H_

#include "iscsi.h"

/* iSCSI listen port for incoming connections */
#define ISCSI_LISTEN_PORT 3260

/* assumes a pointer to a 3-byte array */
#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))

/* assumes a pointer to a 3 byte array, and an integer value */
#define hton24(p, v) {\
        p[0] = (((v) >> 16) & 0xFF); \
        p[1] = (((v) >> 8) & 0xFF); \
        p[2] = ((v) & 0xFF); \
}

/* for Login min, max, active version fields */
#define ISCSI_MIN_VERSION	ISCSI_DRAFT20_VERSION
#define ISCSI_MAX_VERSION	ISCSI_DRAFT20_VERSION

/* Min. and Max. length of a PDU we can support */
#define MIN_PDU_LENGTH		(8 << 9)	/* 4KB */
#define MAX_PDU_LENGTH		(0xffffffff)	/* Huge */

/* Padding word length */
#define PAD_WORD_LEN		4

/* Max. number of Key=Value pairs in a text message */
#define MAX_KEY_VALUE_PAIRS	8192

/* maximum length for text keys/values */
#define KEY_MAXLEN		64
#define VALUE_MAXLEN		255
#define TARGET_NAME_MAXLEN	VALUE_MAXLEN

#define DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH	8192

#endif