Stuart Stanley's ISIS dissection support.

svn path=/trunk/; revision=1340

1 files changed, 119 insertions, 0 deletions

diff --git a/packet-isis-lsp.h b/packet-isis-lsp.h
new file mode 100644
index 0000000000..81be07a4ae
--- /dev/null
+++ b/packet-isis-lsp.h
@@ -0,0 +1,119 @@
+/* packet-isis-lsp.h
+ * Defines and such for LSP and their CLV decodes
+ *
+ * $Id: packet-isis-lsp.h,v 1.1 1999/12/15 04:34:18 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_LSP_H
+#define _PACKET_ISIS_LSP_H
+
+/*
+ * Declare what an LSP id looks like (used by LSP and sequence number
+ * packets)
+ */
+typedef struct {
+	guint8	source_id[6];			/* source id part */
+	guint8	psuodonode_id;			/* psn id */
+	guint8	lsp_number;			/* frag number */
+} isis_lsp_id_t;
+   
+
+/*
+ * Declare L1/L2 LSP base header.  
+ */
+typedef struct {
+	guint8	isis_lsp_pdu_length[2];		/* pdu length including hdr */
+	guint8	isis_lsp_remaining_life[2];	/* seconds before expiration */
+	isis_lsp_id_t isis_lsp_id;
+	guint8	isis_lsp_sequence_number[4];
+	guint8	isis_lsp_checksum[2];
+	guint8	isis_lsp_type_block;		/* partition/att/hip/istype */
+} isis_lsp_t;
+
+#define ISIS_LSP_PARTITION_MASK	0x80
+#define ISIS_LSP_ATT_MASK	0x78
+#define ISIS_LSP_ATT_SHIFT	3
+#define ISIS_LSP_HIPPITY_MASK	0x04
+#define ISIS_LSP_IS_TYPE_MASK	0x03
+
+#define ISIS_LSP_PARTITION(x)	(x&ISIS_LSP_PARTITION_MASK)
+#define ISIS_LSP_ATT(x)		((x&ISIS_LSP_ATT_MASK)>>ISIS_LSP_ATT_SHIFT)
+#define ISIS_LSP_HIPPITY(x)	(x&ISIS_LSP_HIPPITY_MASK)
+#define ISIS_LSP_IS_TYPE(x)	(x&ISIS_LSP_IS_TYPE_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_CLV_METRIC_SUPPORTED(x)	((x)&0xf0)
+#define ISIS_LSP_CLV_METRIC_RESERVED(x)		((x)&0x40)
+#define ISIS_LSP_CLV_METRIC_VALUE(x)		((x)&0x3f)
+
+/*
+ * detail clv information on L1 lsp packets
+ */
+#define ISIS_CLV_L1_LSP_AREA_ADDRESS		1
+#define ISIS_CLV_L1_LSP_IS_NEIGHBORS		2
+#define ISIS_CLV_L1_LSP_ES_NEIGHBORS		3
+#define ISIS_CLV_L1_LSP_IP_INT_REACHABLE	128
+#define ISIS_CLV_L1_LSP_NLPID			129
+#define ISIS_CLV_L1_LSP_IP_INTERFACE_ADDR	132
+/* 
+ * Note, the spec say 133, but everyone seems to use 10. Any clue on why
+ * this is would be appreciated!
+ */
+#define ISIS_CLV_L1_LSP_AUTHENTICATION_NS	10	/* non spec */
+#define ISIS_CLV_L1_LSP_AUTHENTICATION		133
+
+/*
+ * detail clv information on L2 lsp packets
+ */
+#define ISIS_CLV_L2_LSP_AREA_ADDRESS		1
+#define ISIS_CLV_L2_LSP_IS_NEIGHBORS		2
+#define ISIS_CLV_L2_LSP_PARTITION_DIS		4
+#define ISIS_CLV_L2_LSP_PREFIX_NEIGHBORS	5
+#define ISIS_CLV_L2_LSP_IP_INT_REACHABLE	128
+#define ISIS_CLV_L2_LSP_NLPID			129
+#define ISIS_CLV_L2_LSP_IP_EXT_REACHABLE	130
+#define ISIS_CLV_L2_LSP_IDRP_INFO		131
+#define ISIS_CLV_L2_LSP_IP_INTERFACE_ADDR	132
+/* 
+ * Note, the spec say 133, but everyone seems to use 10. Any clue on why
+ * this is would be appreciated!
+ */
+#define ISIS_CLV_L2_LSP_AUTHENTICATION_NS	10  	/*non spec */
+#define ISIS_CLV_L2_LSP_AUTHENTICATION		133
+
+/*
+ * Published API functions.  NOTE, this are "local" API functions and
+ * are only valid from with isis decodes.
+ */
+extern void isis_dissect_isis_lsp(int hello_type, int header_length,
+        const u_char *pd, int offset, frame_data *fd, proto_tree *tree);
+extern void isis_lsp_decode_lsp_id(char *tstr, proto_tree *tree, int offset,
+                isis_lsp_id_t *id );
+
+#endif /* _PACKET_ISIS_LSP_H */