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Diffstat (limited to 'packet-isis.h')
| -rw-r--r-- | packet-isis.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/packet-isis.h b/packet-isis.h new file mode 100644 index 0000000000..f40bf9e445 --- /dev/null +++ b/packet-isis.h @@ -0,0 +1,90 @@ +/* packet-isis.h + * Defines and such for core isis protcol decode. + * + * $Id: packet-isis.h,v 1.1 1999/12/15 04:34:19 guy Exp $ + * Stuart Stanley <stuarts@mxmail.net> + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@zing.org> + * 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_H +#define _PACKET_ISIS_H + +/* + * the IntraDomain Routing Protocol Descriminator is an achitectueral constant + * set to 0x83 for all packets. + */ +#define ISIS_IRPD 0x83 + +/* + * The version we support is 1 + */ +#define ISIS_REQUIRED_VERSION 1 + +/* + * ISIS type field values + */ +#define ISIS_TYPE_L1_HELLO 15 +#define ISIS_TYPE_L2_HELLO 16 +#define ISIS_TYPE_PTP_HELLO 17 +#define ISIS_TYPE_L1_LSP 18 +#define ISIS_TYPE_L2_LSP 20 +#define ISIS_TYPE_L1_CSNP 24 +#define ISIS_TYPE_L2_CSNP 25 +#define ISIS_TYPE_L1_PSNP 26 +#define ISIS_TYPE_L2_PSNP 27 + +/* + * The common first 8 octets of the ISIS protocol header. + */ +typedef struct { + guint8 isis_irpd; /* Intradomain Routing Protocol Descriminator. Must be 0x83 */ + guint8 isis_header_length; /* header length in octets */ + guint8 isis_version; /* isis version, must be 0x01 */ + guint8 isis_reserved; /* res byte, must be 0 */ + guint8 isis_type_reserved; /* packet type & reserved */ +#define ISIS_TYPE_MASK 0x1f +#define ISIS_R8_MASK 0x80 +#define ISIS_R7_MASK 0x40 +#define ISIS_R6_MASK 0x20 + guint8 isis_version2; /* another version(?!), must be 0x01 */ + + guint8 isis_eco; /* ECO, must be 0 */ + guint8 isis_user_eco; /* user ECO, must be 0 */ +} isis_hdr_t; + +#define isis_type isis_type_reserved&ISIS_TYPE_MASK +#define isis_r8 isis_type_reserved&ISIS_R8_MASK +#define isis_r7 isis_type_reserved&ISIS_R7_MASK +#define isis_r6 isis_type_reserved&ISIS_R6_MASK + +/* + * published API functions + */ +extern char *isis_address_to_string ( const u_char *pd, int offset, int len ); +extern void dissect_isis(const u_char *pd, int offset, frame_data *fd, + proto_tree *tree); +extern void proto_register_isis(void); +extern void isis_dissect_unknown(int offset,guint length,proto_tree *tree,frame_data *fd, + char *fmat, ...); + +#endif /* _PACKET_ISIS_H */ |