/* packet-isis-lsp.h
 * Defines and such for LSP and their CLV decodes
 *
 * $Id: packet-isis-lsp.h,v 1.19 2003/12/08 20:40:33 guy Exp $
 * Stuart Stanley <stuarts@mxmail.net>
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _PACKET_ISIS_LSP_H
#define _PACKET_ISIS_LSP_H

/*
 * Declarations for L1/L2 LSP base header.
 */

/* P | ATT | HIPPITY | DS FIELD description */
#define ISIS_LSP_PARTITION_MASK     0x80
#define ISIS_LSP_PARTITION_SHIFT    7
#define ISIS_LSP_PARTITION(info)    (((info) & ISIS_LSP_PARTITION_MASK) >> ISIS_LSP_PARTITION_SHIFT)

#define ISIS_LSP_ATT_MASK     0x78
#define ISIS_LSP_ATT_SHIFT    3
#define ISIS_LSP_ATT(info)    (((info) & ISIS_LSP_ATT_MASK) >> ISIS_LSP_ATT_SHIFT)

#define ISIS_LSP_ATT_ERROR(info)   ((info) >> 3)
#define ISIS_LSP_ATT_EXPENSE(info) (((info) >> 2) & 1)
#define ISIS_LSP_ATT_DELAY(info)   (((info) >> 1) & 1)
#define ISIS_LSP_ATT_DEFAULT(info) ((info) & 1)

#define ISIS_LSP_HIPPITY_MASK     0x04
#define ISIS_LSP_HIPPITY_SHIFT    2
#define ISIS_LSP_HIPPITY(info)    (((info) & ISIS_LSP_HIPPITY_MASK) >> ISIS_LSP_HIPPITY_SHIFT)

#define ISIS_LSP_IS_TYPE_MASK     0x03
#define ISIS_LSP_IS_TYPE(info)    ((info) & ISIS_LSP_IS_TYPE_MASK)

#define ISIS_LSP_MT_MSHIP_RES_MASK    4
#define ISIS_LSP_MT_MSHIP_RES_SHIFT   12
#define ISIS_LSP_MT_MSHIP_RES(info)  (((info) >> ISIS_LSP_MT_MSHIP_RES_SHIFT) & ISIS_LSP_MT_MSHIP_RES_MASK)

#define ISIS_LSP_MT_MSHIP_ID_MASK   0x0FFF
#define ISIS_LSP_MT_MSHIP_ID(info)  ((info) & ISIS_LSP_MT_MSHIP_ID_MASK)


#define ISIS_LSP_TYPE_UNUSED0		0
#define ISIS_LSP_TYPE_LEVEL_1		1
#define ISIS_LSP_TYPE_UNUSED2		2
#define ISIS_LSP_TYPE_LEVEL_2		3

#define ISIS_LSP_ATTACHED_NONE    0
#define ISIS_LSP_ATTACHED_DEFAULT 1
#define ISIS_LSP_ATTACHED_DELAY   2
#define ISIS_LSP_ATTACHED_EXPENSE 4
#define ISIS_LSP_ATTACHED_ERROR   8


#define ISIS_LSP_CLV_METRIC_SUPPORTED(x)	((x)&0x80)
#define ISIS_LSP_CLV_METRIC_IE(x)               ((x)&0x40)
#define ISIS_LSP_CLV_METRIC_RESERVED(x)		((x)&0x40)
#define ISIS_LSP_CLV_METRIC_UPDOWN(x)           ((x)&0x80)
#define ISIS_LSP_CLV_METRIC_VALUE(x)		((x)&0x3f)

/*
 * Published API functions.  NOTE, this are "local" API functions and
 * are only valid from with isis decodes.
 */
extern void isis_dissect_isis_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
	int offset, int hello_type, int header_length, int id_length);
extern void isis_register_lsp(int proto_isis);

#endif /* _PACKET_ISIS_LSP_H */