1999-12-15 04:34:44 +00:00
/* packet-isis-hello.c
* Routines for decoding isis hello packets and their CLVs
*
2004-07-18 00:24:25 +00:00
* $ Id $
1999-12-15 04:34:44 +00:00
* Stuart Stanley < stuarts @ mxmail . net >
*
2006-05-21 04:49:01 +00:00
* Wireshark - Network traffic analyzer
* By Gerald Combs < gerald @ wireshark . org >
1999-12-15 04:34:44 +00:00
* Copyright 1998 Gerald Combs
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* 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 .
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* 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 .
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
2012-06-28 22:56:06 +00:00
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA .
1999-12-15 04:34:44 +00:00
*/
2012-09-20 02:03:38 +00:00
# include "config.h"
1999-12-15 04:34:44 +00:00
# include <glib.h>
2002-01-21 07:37:49 +00:00
# include <epan/packet.h>
2013-12-22 18:18:12 +00:00
# include <epan/expert.h>
2000-04-15 22:11:26 +00:00
# include "packet-osi.h"
1999-12-15 04:34:44 +00:00
# include "packet-isis.h"
# include "packet-isis-clv.h"
2009-08-21 20:25:24 +00:00
# include <epan/addr_resolv.h>
1999-12-15 04:34:44 +00:00
2007-08-24 22:22:34 +00:00
2013-12-22 18:18:12 +00:00
/*
* Declarations for L1 / L2 hello base header .
*/
# define ISIS_HELLO_CTYPE_MASK 0x03
# define ISIS_HELLO_CT_RESERVED_MASK 0xfc
# define ISIS_HELLO_PRIORITY_MASK 0x7f
# define ISIS_HELLO_P_RESERVED_MASK 0x80
# define ISIS_HELLO_TYPE_RESERVED 0
# define ISIS_HELLO_TYPE_LEVEL_1 1
# define ISIS_HELLO_TYPE_LEVEL_2 2
# define ISIS_HELLO_TYPE_LEVEL_12 3
/*
* misc . bittest macros
*/
# define ISIS_RESTART_RR 0x01
# define ISIS_RESTART_RA 0x02
# define ISIS_RESTART_SA 0x04
# define ISIS_MASK_RESTART_RR(x) ((x)&ISIS_RESTART_RR)
# define ISIS_MASK_RESTART_RA(x) ((x)&ISIS_RESTART_RA)
# define ISIS_MASK_RESTART_SA(x) ((x)&ISIS_RESTART_SA)
2007-08-24 22:22:34 +00:00
# define APPEND_BOOLEAN_FLAG(flag, item, string) \
if ( flag ) { \
if ( item ) \
proto_item_append_text ( item , string , sep ) ; \
sep = cont_sep ; \
}
2014-01-01 12:17:57 +00:00
2007-08-24 22:22:34 +00:00
static const char initial_sep [ ] = " ( " ;
static const char cont_sep [ ] = " , " ;
2014-01-01 12:17:57 +00:00
void proto_register_isis_hello ( void ) ;
void proto_reg_handoff_isis_hello ( void ) ;
2013-12-22 18:18:12 +00:00
static int proto_isis_hello = - 1 ;
2007-08-24 22:22:34 +00:00
1999-12-15 04:34:44 +00:00
/* hello packets */
2013-12-22 18:18:12 +00:00
static int hf_isis_hello_circuit = - 1 ;
2003-12-08 20:40:33 +00:00
static int hf_isis_hello_circuit_reserved = - 1 ;
static int hf_isis_hello_source_id = - 1 ;
static int hf_isis_hello_holding_timer = - 1 ;
static int hf_isis_hello_pdu_length = - 1 ;
2013-12-22 18:18:12 +00:00
static int hf_isis_hello_priority = - 1 ;
2003-12-08 20:40:33 +00:00
static int hf_isis_hello_priority_reserved = - 1 ;
static int hf_isis_hello_lan_id = - 1 ;
static int hf_isis_hello_local_circuit_id = - 1 ;
static int hf_isis_hello_clv_ipv4_int_addr = - 1 ;
static int hf_isis_hello_clv_ipv6_int_addr = - 1 ;
2013-01-31 17:55:31 +00:00
/* static int hf_isis_hello_clv_ptp_adj = -1; */
2003-12-08 20:40:33 +00:00
static int hf_isis_hello_clv_mt = - 1 ;
2007-08-24 22:22:34 +00:00
static int hf_isis_hello_clv_restart_flags = - 1 ;
static int hf_isis_hello_clv_restart_flags_rr = - 1 ;
static int hf_isis_hello_clv_restart_flags_ra = - 1 ;
static int hf_isis_hello_clv_restart_flags_sa = - 1 ;
static int hf_isis_hello_clv_restart_remain_time = - 1 ;
static int hf_isis_hello_clv_restart_neighbor = - 1 ;
2013-12-22 18:18:12 +00:00
/* Generated from convert_proto_tree_add_text.pl */
static int hf_isis_hello_extended_local_circuit_id = - 1 ;
static int hf_isis_hello_adjacency_state = - 1 ;
static int hf_isis_hello_neighbor_systemid = - 1 ;
static int hf_isis_hello_digest = - 1 ;
static int hf_isis_hello_aux_mcid = - 1 ;
static int hf_isis_hello_mcid = - 1 ;
static int hf_isis_hello_is_neighbor = - 1 ;
static int hf_isis_hello_mtid = - 1 ;
static int hf_isis_hello_checksum = - 1 ;
static int hf_isis_hello_neighbor_extended_local_circuit_id = - 1 ;
2003-12-08 20:40:33 +00:00
static gint ett_isis_hello = - 1 ;
static gint ett_isis_hello_clv_area_addr = - 1 ;
static gint ett_isis_hello_clv_is_neighbors = - 1 ;
static gint ett_isis_hello_clv_padding = - 1 ;
static gint ett_isis_hello_clv_unknown = - 1 ;
static gint ett_isis_hello_clv_nlpid = - 1 ;
static gint ett_isis_hello_clv_authentication = - 1 ;
static gint ett_isis_hello_clv_ip_authentication = - 1 ;
1999-12-15 04:34:44 +00:00
static gint ett_isis_hello_clv_ipv4_int_addr = - 1 ;
2001-05-14 18:40:17 +00:00
static gint ett_isis_hello_clv_ipv6_int_addr = - 1 ;
2003-12-08 20:40:33 +00:00
static gint ett_isis_hello_clv_ptp_adj = - 1 ;
static gint ett_isis_hello_clv_mt = - 1 ;
static gint ett_isis_hello_clv_restart = - 1 ;
2007-08-24 22:22:34 +00:00
static gint ett_isis_hello_clv_restart_flags = - 1 ;
2012-05-02 14:23:35 +00:00
static gint ett_isis_hello_clv_mt_port_cap = - 1 ;
static gint ett_isis_hello_clv_mt_port_cap_spb_mcid = - 1 ;
static gint ett_isis_hello_clv_mt_port_cap_spb_aux_mcid = - 1 ;
static gint ett_isis_hello_clv_mt_port_cap_spb_digest = - 1 ;
static gint ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples = - 1 ;
2003-12-08 20:40:33 +00:00
static gint ett_isis_hello_clv_checksum = - 1 ;
1999-12-15 04:34:44 +00:00
2013-12-22 18:18:12 +00:00
static expert_field ei_isis_hello_short_packet = EI_INIT ;
static expert_field ei_isis_hello_long_packet = EI_INIT ;
static expert_field ei_isis_hello_subtlv = EI_INIT ;
static expert_field ei_isis_hello_authentication = EI_INIT ;
1999-12-15 04:34:44 +00:00
static const value_string isis_hello_circuit_type_vals [ ] = {
{ ISIS_HELLO_TYPE_RESERVED , " Reserved 0 (discard PDU) " } ,
{ ISIS_HELLO_TYPE_LEVEL_1 , " Level 1 only " } ,
{ ISIS_HELLO_TYPE_LEVEL_2 , " Level 2 only " } ,
{ ISIS_HELLO_TYPE_LEVEL_12 , " Level 1 and 2 " } ,
{ 0 , NULL } } ;
2012-05-02 14:23:35 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_mcid_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2012-05-02 14:23:35 +00:00
proto_tree * tree , int offset , int subtype , int sublen )
{
const int MCID_LEN = 51 ;
const int SUBLEN = 2 * MCID_LEN ;
2013-12-22 18:18:12 +00:00
proto_tree * subtree , * ti ;
2012-05-02 14:23:35 +00:00
if ( sublen ! = SUBLEN ) {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
" Short SPB MCID TLV (%d vs %d) " , sublen , SUBLEN ) ;
2012-05-02 14:23:35 +00:00
return ;
}
2013-12-22 18:18:12 +00:00
ti = proto_tree_add_text ( tree , tvb , offset - 2 , sublen + 2 ,
" SPB MCID: Type: 0x%02x, Length: %d " , subtype , sublen ) ;
subtree = proto_item_add_subtree ( ti , ett_isis_hello_clv_mt_port_cap_spb_mcid ) ;
/* MCID: */
proto_tree_add_item ( subtree , hf_isis_hello_mcid , tvb , offset , MCID_LEN , ENC_NA ) ;
offset + = MCID_LEN ;
/* Aux MCID: */
proto_tree_add_item ( subtree , hf_isis_hello_aux_mcid , tvb , offset , MCID_LEN , ENC_NA ) ;
/* offset += MCID_LEN; */
2012-05-02 14:23:35 +00:00
}
static void
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_digest_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2012-05-02 14:23:35 +00:00
proto_tree * tree , int offset , int subtype , int sublen )
{
const int DIGEST_LEN = 32 ;
const int SUBLEN = 1 + DIGEST_LEN ;
if ( sublen ! = SUBLEN ) {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
2012-05-02 14:23:35 +00:00
" Short SPB Digest TLV (%d vs %d) " , sublen , SUBLEN ) ;
return ;
}
else {
proto_tree * subtree , * ti ;
const guint8 vad = tvb_get_guint8 ( tvb , offset ) ;
ti = proto_tree_add_text ( tree , tvb , offset - 2 , sublen + 2 ,
" SPB Digest: Type: 0x%02x, Length: %d " , subtype , sublen ) ;
subtree = proto_item_add_subtree ( ti , ett_isis_hello_clv_mt_port_cap_spb_digest ) ;
proto_tree_add_text ( subtree , tvb , offset , 1 ,
" V: %d, A: %d, D: %d " ,
( vad > > 4 ) & 0x1 ,
( vad > > 2 ) & 0x3 ,
( vad > > 0 ) & 0x3 ) ;
+ + offset ;
/* Digest: */
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( subtree , hf_isis_hello_digest , tvb , offset , DIGEST_LEN , ENC_NA ) ;
/* offset += DIGEST_LEN; */
2012-05-02 14:23:35 +00:00
}
}
static void
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_bvid_tuples_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2012-05-02 14:23:35 +00:00
proto_tree * tree , int offset , int subtype , int sublen )
{
proto_tree * subtree , * ti ;
int subofs = offset ;
ti = proto_tree_add_text ( tree , tvb , offset - 2 , sublen + 2 ,
" SPB Base Vlan Identifiers: Type: 0x%02x, Length: %d " , subtype , sublen ) ;
subtree = proto_item_add_subtree ( ti , ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples ) ;
while ( sublen > 0 ) {
if ( sublen < 6 ) {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
2012-05-02 14:23:35 +00:00
" Short SPB BVID header entry (%d vs %d) " , sublen , 6 ) ;
return ;
}
else {
const guint8 * ect_tlv = tvb_get_ptr ( tvb , subofs , 6 ) ;
guint16 word = ( ect_tlv [ 4 ] < < 8 ) | ect_tlv [ 5 ] ;
guint16 bvid = ( word > > 4 ) & 0xfff ;
int u_bit = ( ect_tlv [ 5 ] & 8 ) ? 1 : 0 ;
int m_bit = ( ect_tlv [ 5 ] & 4 ) ? 1 : 0 ;
proto_tree_add_text ( subtree , tvb , subofs , 6 ,
" ECT: %02x-%02x-%02x-%02x, BVID: 0x%03x (%d),%s U: %d, M: %d " ,
ect_tlv [ 0 ] , ect_tlv [ 1 ] , ect_tlv [ 2 ] , ect_tlv [ 3 ] ,
bvid , bvid ,
( bvid < 10 ? " "
: bvid < 100 ? " "
: bvid < 1000 ? " "
: " " ) ,
u_bit ,
m_bit ) ;
}
sublen - = 6 ;
subofs + = 6 ;
}
}
static void
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2012-05-02 14:23:35 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
{
if ( length > = 2 ) {
/* mtid */
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( tree , hf_isis_hello_mtid , tvb , offset , 2 , ENC_BIG_ENDIAN ) ;
2012-05-02 14:23:35 +00:00
length - = 2 ;
offset + = 2 ;
while ( length > = 2 ) {
guint8 subtype = tvb_get_guint8 ( tvb , offset ) ;
guint8 subtlvlen = tvb_get_guint8 ( tvb , offset + 1 ) ;
length - = 2 ;
offset + = 2 ;
if ( subtlvlen > length ) {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
2012-05-02 14:23:35 +00:00
" Short type 0x%02x TLV (%d vs %d) " , subtype , subtlvlen , length ) ;
return ;
}
if ( subtype = = 0x04 ) { /* SPB MCID */
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_mcid_clv ( tvb , pinfo , tree , offset , subtype , subtlvlen ) ;
2012-05-02 14:23:35 +00:00
}
else if ( subtype = = 0x05 ) { /* SPB Digest */
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_digest_clv ( tvb , pinfo , tree , offset , subtype , subtlvlen ) ;
2012-05-02 14:23:35 +00:00
}
else if ( subtype = = 0x06 ) { /* SPB BVID Tuples */
2013-12-22 18:18:12 +00:00
dissect_hello_mt_port_cap_spb_bvid_tuples_clv ( tvb , pinfo , tree , offset , subtype , subtlvlen ) ;
2012-05-02 14:23:35 +00:00
}
else {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_subtlv , tvb , offset , - 1 ,
" Unknown SubTlv: Type: 0x%02x, Length: %d " , subtype , subtlvlen ) ;
2012-05-02 14:23:35 +00:00
}
length - = subtlvlen ;
offset + = subtlvlen ;
}
}
}
2002-02-09 23:44:38 +00:00
2007-08-24 22:22:34 +00:00
/*
* The Restart CLV is documented in RFC 3847 ( Restart Signaling for
* Intermediate System to Intermediate System ) . The CLV looks like this
*
* Type 211
* Length # of octets in the value field ( 1 to ( 3 + ID Length ) )
* Value
*
* No . of octets
* + - - - - - - - - - - - - - - - - - - - - - - - +
* | Flags | 1
* + - - - - - - - - - - - - - - - - - - - - - - - +
* | Remaining Time | 2
* + - - - - - - - - - - - - - - - - - - - - - - - +
* | Restarting Neighbor ID | ID Length
* + - - - - - - - - - - - - - - - - - - - - - - - +
*
* Flags ( 1 octet )
*
* 0 1 2 3 4 5 6 7
* + - - + - - + - - + - - + - - + - - + - - + - - +
* | Reserved | SA | RA | RR |
* + - - + - - + - - + - - + - - + - - + - - + - - +
*
* RR - Restart Request
* RA - Restart Acknowledgement
* SA - Suppress adjacency advertisement
*
* The Remaining Time and Restarting Neighbor ID fields are only required when
* the RA flag is set . The Flags field is always required .
*
*/
2002-02-09 23:44:38 +00:00
/*
* Name : dissect_hello_restart_clv ( )
*
* Description :
* Decode for a restart clv - only found in IIHs
* hence no call in the common clv dissector
*
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_restart_clv ( tvbuff_t * tvb , packet_info * pinfo _U_ ,
2007-08-24 22:22:34 +00:00
proto_tree * tree , int offset , int id_length , int length )
2002-02-09 23:44:38 +00:00
{
2007-08-24 22:22:34 +00:00
int restart_options = 0 ;
proto_tree * flags_tree ;
proto_item * restart_flags_item ;
proto_item * hold_time_item ;
const char * sep ;
if ( length > = 1 ) {
restart_options = tvb_get_guint8 ( tvb , offset ) ;
restart_flags_item = proto_tree_add_uint ( tree , hf_isis_hello_clv_restart_flags ,
tvb , offset , 1 , restart_options ) ;
flags_tree = proto_item_add_subtree ( restart_flags_item , ett_isis_hello_clv_restart_flags ) ;
2013-01-31 17:55:31 +00:00
proto_tree_add_boolean ( flags_tree , hf_isis_hello_clv_restart_flags_sa ,
2007-08-24 22:22:34 +00:00
tvb , offset , 1 , restart_options ) ;
2013-01-31 17:55:31 +00:00
proto_tree_add_boolean ( flags_tree , hf_isis_hello_clv_restart_flags_ra ,
2007-08-24 22:22:34 +00:00
tvb , offset , 1 , restart_options ) ;
2013-01-31 17:55:31 +00:00
proto_tree_add_boolean ( flags_tree , hf_isis_hello_clv_restart_flags_rr ,
2007-08-24 22:22:34 +00:00
tvb , offset , 1 , restart_options ) ;
/* Append an indication of which flags are set in the restart
* options
*/
sep = initial_sep ;
APPEND_BOOLEAN_FLAG ( ISIS_MASK_RESTART_SA ( restart_options ) , restart_flags_item , " %sSA " ) ;
APPEND_BOOLEAN_FLAG ( ISIS_MASK_RESTART_RA ( restart_options ) , restart_flags_item , " %sRA " ) ;
APPEND_BOOLEAN_FLAG ( ISIS_MASK_RESTART_RR ( restart_options ) , restart_flags_item , " %sRR " ) ;
if ( sep ! = initial_sep )
{
proto_item_append_text ( restart_flags_item , " ) " ) ;
}
2002-02-09 23:44:38 +00:00
2002-05-02 10:13:56 +00:00
}
2007-08-24 22:22:34 +00:00
/* The Remaining Time field should only be present if the RA flag is
* set
*/
if ( length > = 3 & & ISIS_MASK_RESTART_RA ( restart_options ) ) {
2013-12-22 18:18:12 +00:00
hold_time_item = proto_tree_add_item ( tree , hf_isis_hello_clv_restart_remain_time ,
tvb , offset + 1 , 2 , ENC_BIG_ENDIAN ) ;
2007-08-24 22:22:34 +00:00
proto_item_append_text ( hold_time_item , " s " ) ;
}
2002-02-09 23:44:38 +00:00
2007-08-24 22:22:34 +00:00
/* The Restarting Neighbor ID should only be present if the RA flag is
* set .
*/
if ( length > = 3 + id_length & & ISIS_MASK_RESTART_RA ( restart_options ) ) {
2013-12-23 15:18:48 +00:00
proto_tree_add_item ( tree , hf_isis_hello_clv_restart_neighbor , tvb , offset + 3 , id_length , ENC_NA ) ;
2007-08-24 22:22:34 +00:00
}
2002-02-09 23:44:38 +00:00
}
1999-12-15 04:34:44 +00:00
/*
* Name : dissect_hello_nlpid_clv ( )
*
* Description :
* Decode for a hello packets NLPID clv . Calls into the
* clv common one .
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
1999-12-15 04:34:44 +00:00
* int : current offset into packet data
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
1999-12-15 04:34:44 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_nlpid_clv ( tvbuff_t * tvb , packet_info * pinfo _U_ ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2002-04-07 22:36:55 +00:00
isis_dissect_nlpid_clv ( tvb , tree , offset , length ) ;
1999-12-15 04:34:44 +00:00
}
2001-06-23 19:45:12 +00:00
/*
* Name : dissect_hello_mt_clv ( )
*
* Description :
* Decode for a hello packets Multi Topology clv . Calls into the
* clv common one .
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
2001-06-23 19:45:12 +00:00
* int : current offset into packet data
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
2001-06-23 19:45:12 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 20:12:31 +00:00
dissect_hello_mt_clv ( tvbuff_t * tvb , packet_info * pinfo _U_ ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2002-04-07 22:36:55 +00:00
isis_dissect_mt_clv ( tvb , tree , offset , length ,
2001-06-23 19:45:12 +00:00
hf_isis_hello_clv_mt ) ;
}
1999-12-15 04:34:44 +00:00
/*
* Name : dissect_hello_ip_int_addr_clv ( )
*
* Description :
* Decode for a hello packets ip interface addr clv . Calls into the
* clv common one .
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
1999-12-15 04:34:44 +00:00
* int : current offset into packet data
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
1999-12-15 04:34:44 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2014-02-25 16:27:32 +00:00
dissect_hello_ip_int_addr_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2013-12-22 18:18:12 +00:00
isis_dissect_ip_int_clv ( tree , pinfo , tvb , & ei_isis_hello_short_packet ,
offset , length , hf_isis_hello_clv_ipv4_int_addr ) ;
1999-12-15 04:34:44 +00:00
}
2001-05-14 18:40:17 +00:00
/*
* Name : dissect_hello_ipv6_int_addr_clv ( )
*
* Description :
* Decode for a hello packets ipv6 interface addr clv . Calls into the
* clv common one .
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
2001-05-14 18:40:17 +00:00
* int : current offset into packet data
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
2001-05-14 18:40:17 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_ipv6_int_addr_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2013-12-22 18:18:12 +00:00
isis_dissect_ipv6_int_clv ( tree , pinfo , tvb , & ei_isis_hello_short_packet ,
offset , length , hf_isis_hello_clv_ipv6_int_addr ) ;
2001-05-14 18:40:17 +00:00
}
1999-12-15 04:34:44 +00:00
/*
2003-12-08 20:40:33 +00:00
* Name : dissect_hello_authentication_clv ( )
1999-12-15 04:34:44 +00:00
*
* Description :
2003-12-08 20:40:33 +00:00
* Decode for a hello packets authenticaion clv .
2013-01-31 17:55:31 +00:00
* Calls into the CLV common one .
1999-12-15 04:34:44 +00:00
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
1999-12-15 04:34:44 +00:00
* int : current offset into packet data
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
1999-12-15 04:34:44 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_authentication_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2013-12-22 18:18:12 +00:00
isis_dissect_authentication_clv ( tree , pinfo , tvb , & ei_isis_hello_authentication , offset , length ) ;
1999-12-15 04:34:44 +00:00
}
2003-12-08 20:40:33 +00:00
/*
* Name : dissect_hello_ip_authentication_clv ( )
*
* Description :
* Decode for a hello packets IP authenticaion clv .
2013-01-31 17:55:31 +00:00
* Calls into the CLV common one .
2003-12-08 20:40:33 +00:00
*
* Input :
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
* int : current offset into packet data
* int : length of IDs in packet .
* int : length of this clv
*
* Output :
* void , will modify proto_tree if not null .
*/
static void
2013-12-22 20:12:31 +00:00
dissect_hello_ip_authentication_clv ( tvbuff_t * tvb , packet_info * pinfo _U_ ,
2003-12-08 20:40:33 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
{
isis_dissect_ip_authentication_clv ( tvb , tree , offset , length ) ;
}
/*
* Name : dissect_hello_checksum_clv ( )
*
* Description :
* dump and verify the optional checksum in TLV 12
*
* Input :
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : protocol display tree to fill out . May be NULL
* int : offset into packet data where we are .
* int : length of clv we are decoding
*
* Output :
* void , but we will add to proto tree if ! NULL .
*/
static void
2013-12-22 18:18:12 +00:00
dissect_hello_checksum_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2003-12-08 20:40:33 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length ) {
2013-12-22 18:18:12 +00:00
guint16 pdu_length , checksum , cacl_checksum = 0 ;
if ( tree ) {
if ( length ! = 2 ) {
proto_tree_add_text ( tree , tvb , offset , length ,
" incorrect checksum length (%u), should be (2) " , length ) ;
return ;
}
checksum = tvb_get_ntohs ( tvb , offset ) ;
/* the check_and_get_checksum() function needs to know how big
* the packet is . we can either pass through the pdu - len through several layers
* of dissectors and wrappers or extract the PDU length field from the PDU specific header
* which is offseted 17 bytes in IIHs ( relative to the beginning of the IS - IS packet ) */
pdu_length = tvb_get_ntohs ( tvb , 17 ) ;
/* unlike the LSP checksum verification which starts at an offset of 12 we start at offset 0*/
switch ( check_and_get_checksum ( tvb , 0 , pdu_length , checksum , offset , & cacl_checksum ) )
{
case NO_CKSUM :
proto_tree_add_uint_format_value ( tree , hf_isis_hello_checksum , tvb , offset , length , checksum ,
" 0x%04x [unused] " , checksum ) ;
break ;
case DATA_MISSING :
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_long_packet , tvb , offset , - 1 ,
" Packet length %d went beyond packet " , tvb_length ( tvb ) ) ;
break ;
case CKSUM_NOT_OK :
proto_tree_add_uint_format_value ( tree , hf_isis_hello_checksum , tvb , offset , length , checksum ,
" 0x%04x [incorrect, should be 0x%04x] " ,
checksum ,
cacl_checksum ) ;
break ;
case CKSUM_OK :
proto_tree_add_uint_format_value ( tree , hf_isis_hello_checksum , tvb , offset , length , checksum ,
" 0x%04x [correct] " , checksum ) ;
break ;
default :
g_message ( " 'check_and_get_checksum' returned an invalid value " ) ;
}
}
2003-12-08 20:40:33 +00:00
}
1999-12-15 04:34:44 +00:00
/*
* Name : dissect_hello_area_address_clv ( )
*
* Description :
2003-12-08 20:40:33 +00:00
* Decode for a hello packets area address clv .
* Calls into the CLV common one .
1999-12-15 04:34:44 +00:00
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
1999-12-15 04:34:44 +00:00
* int : current offset into packet data
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
1999-12-15 04:34:44 +00:00
*
* Output :
* void , will modify proto_tree if not null .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_area_address_clv ( tvbuff_t * tvb , packet_info * pinfo _U_ ,
2002-05-02 10:13:56 +00:00
proto_tree * tree , int offset , int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
2013-12-22 18:18:12 +00:00
isis_dissect_area_address_clv ( tree , pinfo , tvb , & ei_isis_hello_short_packet , offset , length ) ;
1999-12-15 04:34:44 +00:00
}
2013-12-22 18:18:12 +00:00
static const value_string adj_state_vals [ ] = {
{ 0 , " Up " } ,
{ 1 , " Initializing " } ,
{ 2 , " Down " } ,
{ 0 , NULL }
} ;
2001-07-02 00:19:34 +00:00
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_ptp_adj_clv ( tvbuff_t * tvb , packet_info * pinfo ,
2007-08-24 22:22:34 +00:00
proto_tree * tree , int offset , int id_length , int length )
2001-07-02 00:19:34 +00:00
{
2013-12-22 18:18:12 +00:00
switch ( length )
{
case 1 :
proto_tree_add_item ( tree , hf_isis_hello_adjacency_state , tvb , offset , 1 , ENC_NA ) ;
break ;
case 5 :
proto_tree_add_item ( tree , hf_isis_hello_adjacency_state , tvb , offset , 1 , ENC_NA ) ;
proto_tree_add_item ( tree , hf_isis_hello_extended_local_circuit_id , tvb , offset + 1 , 4 , ENC_BIG_ENDIAN ) ;
break ;
case 11 :
proto_tree_add_item ( tree , hf_isis_hello_adjacency_state , tvb , offset , 1 , ENC_NA ) ;
proto_tree_add_item ( tree , hf_isis_hello_extended_local_circuit_id , tvb , offset + 1 , 4 , ENC_BIG_ENDIAN ) ;
2013-12-23 15:18:48 +00:00
proto_tree_add_item ( tree , hf_isis_hello_neighbor_systemid , tvb , offset + 5 , id_length , ENC_NA ) ;
2013-12-22 18:18:12 +00:00
break ;
case 15 :
proto_tree_add_item ( tree , hf_isis_hello_adjacency_state , tvb , offset , 1 , ENC_NA ) ;
proto_tree_add_item ( tree , hf_isis_hello_extended_local_circuit_id , tvb , offset + 1 , 4 , ENC_BIG_ENDIAN ) ;
2013-12-23 15:18:48 +00:00
proto_tree_add_item ( tree , hf_isis_hello_neighbor_systemid , tvb , offset + 5 , id_length , ENC_NA ) ;
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( tree , hf_isis_hello_neighbor_extended_local_circuit_id , tvb , offset + 5 + id_length , 4 , ENC_BIG_ENDIAN ) ;
break ;
default :
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
" malformed TLV (%d vs 1,5,11,15) " , length ) ;
}
2001-06-23 19:45:12 +00:00
}
1999-12-15 04:34:44 +00:00
/*
* Name : isis_dissect_is_neighbors_clv ( )
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* Description :
* Take apart a IS neighbor packet . A neighbor is n 6 byte packets .
2013-02-26 01:06:19 +00:00
* ( they tend to be an 802.3 MAC address , but it ' s not required ) .
1999-12-15 04:34:44 +00:00
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : protocol display tree to fill out . May be NULL
1999-12-15 04:34:44 +00:00
* int : offset into packet data where we are .
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of clv we are decoding
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* Output :
* void , but we will add to proto tree if ! NULL .
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_is_neighbors_clv ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , int offset ,
2002-05-02 10:13:56 +00:00
int id_length _U_ , int length )
2001-07-02 00:19:34 +00:00
{
1999-12-15 04:34:44 +00:00
while ( length > 0 ) {
if ( length < 6 ) {
2013-12-22 18:18:12 +00:00
proto_tree_add_expert_format ( tree , pinfo , & ei_isis_hello_short_packet , tvb , offset , - 1 ,
1999-12-15 04:34:44 +00:00
" short is neighbor (%d vs 6) " , length ) ;
return ;
}
2002-08-28 21:04:11 +00:00
/*
1999-12-15 04:34:44 +00:00
* Lets turn the area address into " standard " 0000.0000 . etc
2002-08-28 21:04:11 +00:00
* format string .
1999-12-15 04:34:44 +00:00
*/
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( tree , hf_isis_hello_is_neighbor , tvb , offset , 6 , ENC_NA ) ;
1999-12-15 04:34:44 +00:00
offset + = 6 ;
length - = 6 ;
}
}
/*
* Name : dissect_hello_padding_clv ( )
*
* Description :
* Decode for a hello packet ' s padding clv . Padding does nothing ,
* so we just return .
*
* Input :
2001-07-02 00:19:34 +00:00
* tvbuff_t * : tvbuffer for packet data
* proto_tree * : proto tree to build on ( may be null )
1999-12-15 04:34:44 +00:00
* int : current offset into packet data
2000-06-19 08:33:50 +00:00
* int : length of IDs in packet .
2001-07-02 00:19:34 +00:00
* int : length of this clv
1999-12-15 04:34:44 +00:00
*
* Output :
* void
*/
2002-08-28 21:04:11 +00:00
static void
2013-12-22 18:18:12 +00:00
dissect_hello_padding_clv ( tvbuff_t * tvb _U_ , packet_info * pinfo _U_ , proto_tree * tree _U_ , int offset _U_ ,
2002-05-02 10:13:56 +00:00
int id_length _U_ , int length _U_ )
2001-07-02 00:19:34 +00:00
{
1999-12-15 04:34:44 +00:00
/* nothing to do here! */
}
2013-12-22 18:18:12 +00:00
static const isis_clv_handle_t clv_l1_hello_opts [ ] = {
{
ISIS_CLV_AREA_ADDRESS ,
" Area address(es) " ,
& ett_isis_hello_clv_area_addr ,
dissect_hello_area_address_clv
} ,
{
ISIS_CLV_IS_NEIGHBORS ,
" IS Neighbor(s) " ,
& ett_isis_hello_clv_is_neighbors ,
dissect_hello_is_neighbors_clv
} ,
{
ISIS_CLV_PADDING ,
" Padding " ,
& ett_isis_hello_clv_padding ,
dissect_hello_padding_clv
} ,
{
ISIS_CLV_PROTOCOLS_SUPPORTED ,
" Protocols Supported " ,
& ett_isis_hello_clv_nlpid ,
dissect_hello_nlpid_clv
} ,
{
ISIS_CLV_IP_ADDR ,
" IP Interface address(es) " ,
& ett_isis_hello_clv_ipv4_int_addr ,
dissect_hello_ip_int_addr_clv
} ,
{
ISIS_CLV_IP6_ADDR ,
" IPv6 Interface address(es) " ,
& ett_isis_hello_clv_ipv6_int_addr ,
dissect_hello_ipv6_int_addr_clv
} ,
{
ISIS_CLV_RESTART ,
" Restart Signaling " ,
& ett_isis_hello_clv_restart ,
dissect_hello_restart_clv
} ,
{
ISIS_CLV_AUTHENTICATION ,
" Authentication " ,
& ett_isis_hello_clv_authentication ,
dissect_hello_authentication_clv
} ,
{
ISIS_CLV_IP_AUTHENTICATION ,
" IP Authentication " ,
& ett_isis_hello_clv_ip_authentication ,
dissect_hello_ip_authentication_clv
} ,
{
ISIS_CLV_MT_SUPPORTED ,
" Multi Topology " ,
& ett_isis_hello_clv_mt ,
dissect_hello_mt_clv
} ,
{
ISIS_CLV_CHECKSUM ,
" Checksum " ,
& ett_isis_hello_clv_checksum ,
dissect_hello_checksum_clv
} ,
{
0 ,
" " ,
NULL ,
NULL
}
} ;
static const isis_clv_handle_t clv_l2_hello_opts [ ] = {
{
ISIS_CLV_AREA_ADDRESS ,
" Area address(es) " ,
& ett_isis_hello_clv_area_addr ,
dissect_hello_area_address_clv
} ,
{
ISIS_CLV_IS_NEIGHBORS ,
" IS Neighbor(s) " ,
& ett_isis_hello_clv_is_neighbors ,
dissect_hello_is_neighbors_clv
} ,
{
ISIS_CLV_PADDING ,
" Padding " ,
& ett_isis_hello_clv_padding ,
dissect_hello_padding_clv
} ,
{
ISIS_CLV_PROTOCOLS_SUPPORTED ,
" Protocols Supported " ,
& ett_isis_hello_clv_nlpid ,
dissect_hello_nlpid_clv
} ,
{
ISIS_CLV_IP_ADDR ,
" IP Interface address(es) " ,
& ett_isis_hello_clv_ipv4_int_addr ,
dissect_hello_ip_int_addr_clv
} ,
{
ISIS_CLV_IP6_ADDR ,
" IPv6 Interface address(es) " ,
& ett_isis_hello_clv_ipv6_int_addr ,
dissect_hello_ipv6_int_addr_clv
} ,
{
ISIS_CLV_AUTHENTICATION ,
" Authentication " ,
& ett_isis_hello_clv_authentication ,
dissect_hello_authentication_clv
} ,
{
ISIS_CLV_IP_AUTHENTICATION ,
" IP Authentication " ,
& ett_isis_hello_clv_ip_authentication ,
dissect_hello_ip_authentication_clv
} ,
{
ISIS_CLV_RESTART ,
" Restart Signaling " ,
& ett_isis_hello_clv_restart ,
dissect_hello_restart_clv
} ,
{
ISIS_CLV_MT_SUPPORTED ,
" Multi Topology " ,
& ett_isis_hello_clv_mt ,
dissect_hello_mt_clv
} ,
{
ISIS_CLV_CHECKSUM ,
" Checksum " ,
& ett_isis_hello_clv_checksum ,
dissect_hello_checksum_clv
} ,
{
0 ,
" " ,
NULL ,
NULL
}
} ;
static const isis_clv_handle_t clv_ptp_hello_opts [ ] = {
{
ISIS_CLV_AREA_ADDRESS ,
" Area address(es) " ,
& ett_isis_hello_clv_area_addr ,
dissect_hello_area_address_clv
} ,
{
ISIS_CLV_PADDING ,
" Padding " ,
& ett_isis_hello_clv_padding ,
dissect_hello_padding_clv
} ,
{
ISIS_CLV_PROTOCOLS_SUPPORTED ,
" Protocols Supported " ,
& ett_isis_hello_clv_nlpid ,
dissect_hello_nlpid_clv
} ,
{
ISIS_CLV_IP_ADDR ,
" IP Interface address(es) " ,
& ett_isis_hello_clv_ipv4_int_addr ,
dissect_hello_ip_int_addr_clv
} ,
{
ISIS_CLV_IP6_ADDR ,
" IPv6 Interface address(es) " ,
& ett_isis_hello_clv_ipv6_int_addr ,
dissect_hello_ipv6_int_addr_clv
} ,
{
ISIS_CLV_AUTHENTICATION ,
" Authentication " ,
& ett_isis_hello_clv_authentication ,
dissect_hello_authentication_clv
} ,
{
ISIS_CLV_IP_AUTHENTICATION ,
" IP Authentication " ,
& ett_isis_hello_clv_ip_authentication ,
dissect_hello_ip_authentication_clv
} ,
{
ISIS_CLV_MT_PORT_CAP ,
" MT Port Capability " ,
& ett_isis_hello_clv_mt_port_cap ,
dissect_hello_mt_port_cap_clv
} ,
{
ISIS_CLV_RESTART ,
" Restart Option " ,
& ett_isis_hello_clv_restart ,
dissect_hello_restart_clv
} ,
{
ISIS_CLV_PTP_ADJ_STATE ,
" Point-to-point Adjacency State " ,
& ett_isis_hello_clv_ptp_adj ,
dissect_hello_ptp_adj_clv
} ,
{
ISIS_CLV_MT_SUPPORTED ,
" Multi Topology " ,
& ett_isis_hello_clv_mt ,
dissect_hello_mt_clv
} ,
{
ISIS_CLV_CHECKSUM ,
" Checksum " ,
& ett_isis_hello_clv_checksum ,
dissect_hello_checksum_clv
} ,
{
0 ,
" " ,
NULL ,
NULL
}
} ;
2001-07-02 00:19:34 +00:00
1999-12-15 04:34:44 +00:00
/*
* Name : isis_dissect_isis_hello ( )
2002-08-28 21:04:11 +00:00
*
1999-12-15 04:34:44 +00:00
* Description :
* This procedure rips apart the various types of ISIS hellos . L1H and
2000-06-19 08:33:50 +00:00
* L2H ' s are identical for the most part , while the PTP hello has
1999-12-15 04:34:44 +00:00
* a shorter header .
2002-08-28 21:04:11 +00:00
*/
2013-12-22 18:18:12 +00:00
static void
dissect_isis_hello ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , int offset ,
const isis_clv_handle_t * opts , int header_length , int id_length )
2001-07-02 00:19:34 +00:00
{
1999-12-15 04:34:44 +00:00
proto_item * ti ;
2013-12-22 18:18:12 +00:00
proto_tree * hello_tree ;
int pdu_length ;
1999-12-15 04:34:44 +00:00
2013-12-22 18:18:12 +00:00
col_set_str ( pinfo - > cinfo , COL_PROTOCOL , " ISIS HELLO " ) ;
ti = proto_tree_add_item ( tree , proto_isis_hello , tvb , offset , - 1 , ENC_NA ) ;
hello_tree = proto_item_add_subtree ( ti , ett_isis_hello ) ;
proto_tree_add_item ( hello_tree , hf_isis_hello_circuit , tvb , offset , 1 , ENC_NA ) ;
proto_tree_add_item ( hello_tree , hf_isis_hello_circuit_reserved , tvb , offset , 1 , ENC_NA ) ;
2000-06-19 08:33:50 +00:00
offset + = 1 ;
1999-12-15 04:34:44 +00:00
2013-12-23 15:18:48 +00:00
proto_tree_add_item ( hello_tree , hf_isis_hello_source_id , tvb , offset , id_length , ENC_NA ) ;
col_append_fstr ( pinfo - > cinfo , COL_INFO , " , System-ID: %s " , print_system_id ( tvb_get_ptr ( tvb , offset , id_length ) , id_length ) ) ;
2013-06-14 01:02:11 +00:00
2000-06-19 08:33:50 +00:00
offset + = id_length ;
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( hello_tree , hf_isis_hello_holding_timer , tvb ,
2011-10-06 03:35:44 +00:00
offset , 2 , ENC_BIG_ENDIAN ) ;
2000-06-19 08:33:50 +00:00
offset + = 2 ;
2001-07-02 00:19:34 +00:00
pdu_length = tvb_get_ntohs ( tvb , offset ) ;
2013-12-22 18:18:12 +00:00
proto_tree_add_uint ( hello_tree , hf_isis_hello_pdu_length , tvb ,
2000-06-19 08:33:50 +00:00
offset , 2 , pdu_length ) ;
offset + = 2 ;
2013-12-22 18:18:12 +00:00
if ( opts = = clv_ptp_hello_opts ) {
proto_tree_add_item ( hello_tree , hf_isis_hello_local_circuit_id , tvb ,
2011-10-06 03:35:44 +00:00
offset , 1 , ENC_BIG_ENDIAN ) ;
2000-06-19 08:33:50 +00:00
offset + = 1 ;
2002-08-28 21:04:11 +00:00
} else {
2013-12-22 18:18:12 +00:00
proto_tree_add_item ( hello_tree , hf_isis_hello_priority , tvb , offset , 1 , ENC_NA ) ;
proto_tree_add_item ( hello_tree , hf_isis_hello_priority_reserved , tvb , offset , 1 , ENC_NA ) ;
2002-08-29 18:52:54 +00:00
offset + = 1 ;
2001-04-08 19:32:05 +00:00
2013-12-23 15:18:48 +00:00
proto_tree_add_item ( hello_tree , hf_isis_hello_lan_id , tvb , offset , id_length + 1 , ENC_NA ) ;
2000-06-19 08:33:50 +00:00
offset + = id_length + 1 ;
1999-12-15 04:34:44 +00:00
}
2013-12-22 18:18:12 +00:00
pdu_length - = header_length ;
if ( pdu_length < 0 ) {
expert_add_info_format ( pinfo , ti , & ei_isis_hello_long_packet ,
" Packet header length %d went beyond packet " , header_length ) ;
1999-12-15 04:34:44 +00:00
return ;
}
/*
* Now , we need to decode our CLVs . We need to pass in
* our list of valid ones !
*/
2013-12-22 18:18:12 +00:00
isis_dissect_clvs ( tvb , pinfo , hello_tree , offset ,
opts , & ei_isis_hello_short_packet , pdu_length , id_length ,
2001-07-02 00:19:34 +00:00
ett_isis_hello_clv_unknown ) ;
2013-12-22 18:18:12 +00:00
}
static int
dissect_isis_l1_hello ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , void * data )
{
isis_data_t * isis = ( isis_data_t * ) data ;
dissect_isis_hello ( tvb , pinfo , tree , 0 ,
clv_l1_hello_opts , isis - > header_length , isis - > system_id_len ) ;
return tvb_length ( tvb ) ;
}
static int
dissect_isis_l2_hello ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , void * data )
{
isis_data_t * isis = ( isis_data_t * ) data ;
dissect_isis_hello ( tvb , pinfo , tree , 0 ,
clv_l2_hello_opts , isis - > header_length , isis - > system_id_len ) ;
return tvb_length ( tvb ) ;
}
static int
dissect_isis_ptp_hello ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , void * data )
{
isis_data_t * isis = ( isis_data_t * ) data ;
dissect_isis_hello ( tvb , pinfo , tree , 0 ,
clv_ptp_hello_opts , isis - > header_length , isis - > system_id_len ) ;
return tvb_length ( tvb ) ;
1999-12-15 04:34:44 +00:00
}
/*
2001-12-20 07:33:21 +00:00
* Name : isis_register_hello ( )
1999-12-15 04:34:44 +00:00
*
* Description :
* Register our protocol sub - sets with protocol manager .
*
2002-08-28 21:04:11 +00:00
* Input :
2001-12-20 07:33:21 +00:00
* int : protocol index for the ISIS protocol
1999-12-15 04:34:44 +00:00
*
* Output :
* void
*/
void
2013-12-22 18:18:12 +00:00
proto_register_isis_hello ( void )
{
1999-12-15 04:34:44 +00:00
static hf_register_info hf [ ] = {
2013-12-22 18:18:12 +00:00
{ & hf_isis_hello_circuit ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Circuit type " , " isis.hello.circuit_type " ,
2013-12-22 18:18:12 +00:00
FT_UINT8 , BASE_HEX , VALS ( isis_hello_circuit_type_vals ) , ISIS_HELLO_CTYPE_MASK , NULL , HFILL } } ,
{ & hf_isis_hello_circuit_reserved ,
{ " Reserved " , " isis.hello.reserved " ,
FT_UINT8 , BASE_HEX , NULL , ISIS_HELLO_CT_RESERVED_MASK , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_source_id ,
2013-09-29 18:19:29 +00:00
{ " SystemID {Sender of PDU} " , " isis.hello.source_id " ,
2013-12-23 15:18:48 +00:00
FT_SYSTEM_ID , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_holding_timer ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Holding timer " , " isis.hello.holding_timer " ,
FT_UINT16 , BASE_DEC , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_pdu_length ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " PDU length " , " isis.hello.pdu_length " ,
FT_UINT16 , BASE_DEC , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
2013-12-22 18:18:12 +00:00
{ & hf_isis_hello_priority ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Priority " , " isis.hello.priority " ,
2013-12-22 18:18:12 +00:00
FT_UINT8 , BASE_DEC , NULL , ISIS_HELLO_PRIORITY_MASK , NULL , HFILL } } ,
{ & hf_isis_hello_priority_reserved ,
{ " Reserved " , " isis.hello.reserved " ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
FT_UINT8 , BASE_DEC , NULL , ISIS_HELLO_P_RESERVED_MASK , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_lan_id ,
2013-09-29 18:19:29 +00:00
{ " SystemID {Designated IS} " , " isis.hello.lan_id " ,
2013-12-23 15:18:48 +00:00
FT_SYSTEM_ID , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_local_circuit_id ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Local circuit ID " , " isis.hello.local_circuit_id " ,
FT_UINT8 , BASE_DEC , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
{ & hf_isis_hello_clv_ipv4_int_addr ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " IPv4 interface address " , " isis.hello.clv_ipv4_int_addr " ,
FT_IPv4 , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
2001-05-14 18:40:17 +00:00
{ & hf_isis_hello_clv_ipv6_int_addr ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " IPv6 interface address " , " isis.hello.clv_ipv6_int_addr " ,
FT_IPv6 , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
2001-05-14 18:40:17 +00:00
2013-01-31 17:55:31 +00:00
#if 0
2001-06-23 19:45:12 +00:00
{ & hf_isis_hello_clv_ptp_adj ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Point-to-point Adjacency " , " isis.hello.clv_ptp_adj " ,
FT_UINT8 , BASE_DEC , NULL , 0x0 , NULL , HFILL } } ,
2013-01-31 17:55:31 +00:00
# endif
2001-06-23 19:45:12 +00:00
2002-04-07 23:39:00 +00:00
{ & hf_isis_hello_clv_mt ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " MT-ID " , " isis.hello.clv_mt " ,
FT_UINT16 , BASE_HEX , NULL , 0x0 , NULL , HFILL } } ,
2007-08-24 22:22:34 +00:00
{ & hf_isis_hello_clv_restart_flags ,
From Kovarththanan Rajaratnam via bug 3548:
(1) Trailing/leading spaces are removed from 'name's/'blurb's
(2) Duplicate 'blurb's are replaced with NULL
(3) Empty ("") 'blurb's are replaced with NULL
(4) BASE_NONE, NULL, 0x0 are used for 'display', 'strings' and 'bitmask' fields
for FT_NONE, FT_BYTES, FT_IPv4, FT_IPv6, FT_ABSOLUTE_TIME, FT_RELATIVE_TIME,
FT_PROTOCOL, FT_STRING and FT_STRINGZ field types
(5) Only allow non-zero value for 'display' if 'bitmask' is non-zero
svn path=/trunk/; revision=28770
2009-06-18 21:30:42 +00:00
{ " Restart Signaling Flags " , " isis.hello.clv_restart_flags " ,
FT_UINT8 , BASE_HEX , NULL , 0x0 , NULL , HFILL } } ,
2007-08-24 22:22:34 +00:00
{ & hf_isis_hello_clv_restart_flags_rr ,
{ " Restart Request " , " isis.hello.clv_restart_flags.rr " ,
2013-01-31 17:55:31 +00:00
FT_BOOLEAN , 8 , TFS ( & tfs_true_false ) , ISIS_RESTART_RR ,
2007-08-24 22:22:34 +00:00
" When set, the router is beginning a graceful restart " , HFILL } } ,
{ & hf_isis_hello_clv_restart_flags_ra ,
{ " Restart Acknowledgment " , " isis.hello.clv_restart_flags.ra " ,
2013-01-31 17:55:31 +00:00
FT_BOOLEAN , 8 , TFS ( & tfs_true_false ) , ISIS_RESTART_RA ,
2007-08-24 22:22:34 +00:00
" When set, the router is willing to enter helper mode " , HFILL } } ,
{ & hf_isis_hello_clv_restart_flags_sa ,
{ " Suppress Adjacency " , " isis.hello.clv_restart_flags.sa " ,
2013-01-31 17:55:31 +00:00
FT_BOOLEAN , 8 , TFS ( & tfs_true_false ) , ISIS_RESTART_SA ,
2007-08-24 22:22:34 +00:00
" When set, the router is starting as opposed to restarting " , HFILL } } ,
{ & hf_isis_hello_clv_restart_remain_time ,
{ " Remaining holding time " , " isis.hello.clv_restart.remain_time " ,
2013-01-31 17:55:31 +00:00
FT_UINT16 , BASE_DEC , NULL , 0x0 ,
2007-08-24 22:22:34 +00:00
" How long the helper router will maintain the existing adjacency " , HFILL } } ,
{ & hf_isis_hello_clv_restart_neighbor ,
{ " Restarting Neighbor ID " , " isis.hello.clv_restart.neighbor " ,
2013-12-23 15:18:48 +00:00
FT_SYSTEM_ID , BASE_NONE , NULL , 0x0 ,
2013-12-22 18:18:12 +00:00
" The System ID of the restarting neighbor " , HFILL } } ,
/* Generated from convert_proto_tree_add_text.pl */
{ & hf_isis_hello_mcid , { " MCID " , " isis.hello.mcid " , FT_BYTES , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_aux_mcid , { " Aux MCID " , " isis.hello.aux_mcid " , FT_BYTES , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_digest , { " Digest " , " isis.hello.digest " , FT_BYTES , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_mtid , { " MTID " , " isis.hello.mtid " , FT_UINT16 , BASE_HEX , NULL , 0xfff , NULL , HFILL } } ,
{ & hf_isis_hello_checksum , { " Checksum " , " isis.hello.checksum " , FT_UINT16 , BASE_HEX , NULL , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_adjacency_state , { " Adjacency State " , " isis.hello.adjacency_state " , FT_UINT8 , BASE_DEC , VALS ( adj_state_vals ) , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_extended_local_circuit_id , { " Extended Local circuit ID " , " isis.hello.extended_local_circuit_id " , FT_UINT32 , BASE_HEX , NULL , 0x0 , NULL , HFILL } } ,
2013-12-23 15:18:48 +00:00
{ & hf_isis_hello_neighbor_systemid , { " Neighbor SystemID " , " isis.hello.neighbor_systemid " , FT_SYSTEM_ID , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
2013-12-22 18:18:12 +00:00
{ & hf_isis_hello_neighbor_extended_local_circuit_id , { " Neighbor Extended Local circuit ID " , " isis.hello.neighbor_extended_local_circuit_id " , FT_UINT32 , BASE_HEX , NULL , 0x0 , NULL , HFILL } } ,
{ & hf_isis_hello_is_neighbor , { " IS Neighbor " , " isis.hello.is_neighbor " , FT_ETHER , BASE_NONE , NULL , 0x0 , NULL , HFILL } } ,
1999-12-15 04:34:44 +00:00
} ;
2013-12-22 18:18:12 +00:00
1999-12-15 04:34:44 +00:00
static gint * ett [ ] = {
& ett_isis_hello ,
& ett_isis_hello_clv_area_addr ,
& ett_isis_hello_clv_is_neighbors ,
& ett_isis_hello_clv_padding ,
& ett_isis_hello_clv_unknown ,
& ett_isis_hello_clv_nlpid ,
2003-12-08 20:40:33 +00:00
& ett_isis_hello_clv_authentication ,
& ett_isis_hello_clv_ip_authentication ,
1999-12-15 04:34:44 +00:00
& ett_isis_hello_clv_ipv4_int_addr ,
2001-06-23 19:45:12 +00:00
& ett_isis_hello_clv_ipv6_int_addr ,
& ett_isis_hello_clv_ptp_adj ,
2002-02-09 23:44:38 +00:00
& ett_isis_hello_clv_mt ,
2003-12-08 20:40:33 +00:00
& ett_isis_hello_clv_restart ,
2007-08-24 22:22:34 +00:00
& ett_isis_hello_clv_restart_flags ,
2012-05-02 14:23:35 +00:00
& ett_isis_hello_clv_mt_port_cap ,
& ett_isis_hello_clv_mt_port_cap_spb_mcid ,
& ett_isis_hello_clv_mt_port_cap_spb_aux_mcid ,
& ett_isis_hello_clv_mt_port_cap_spb_digest ,
& ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples ,
2003-12-08 20:40:33 +00:00
& ett_isis_hello_clv_checksum
1999-12-15 04:34:44 +00:00
} ;
2013-12-22 18:18:12 +00:00
static ei_register_info ei [ ] = {
{ & ei_isis_hello_short_packet , { " isis.hello.short_packet " , PI_MALFORMED , PI_ERROR , " Short packet " , EXPFILL } } ,
{ & ei_isis_hello_long_packet , { " isis.hello.long_packet " , PI_MALFORMED , PI_ERROR , " Long packet " , EXPFILL } } ,
{ & ei_isis_hello_subtlv , { " isis.hello.subtlv.unknown " , PI_PROTOCOL , PI_WARN , " Unknown SubTLV " , EXPFILL } } ,
{ & ei_isis_hello_authentication , { " isis.hello.authentication.unknown " , PI_PROTOCOL , PI_WARN , " Unknown authentication type " , EXPFILL } } ,
} ;
expert_module_t * expert_isis_hello ;
/* Register the protocol name and description */
proto_isis_hello = proto_register_protocol ( " ISIS HELLO " , " ISIS HELLO " , " isis.hello " ) ;
proto_register_field_array ( proto_isis_hello , hf , array_length ( hf ) ) ;
1999-12-15 04:34:44 +00:00
proto_register_subtree_array ( ett , array_length ( ett ) ) ;
2013-12-22 18:18:12 +00:00
expert_isis_hello = expert_register_protocol ( proto_isis_hello ) ;
expert_register_field_array ( expert_isis_hello , ei , array_length ( ei ) ) ;
}
void
proto_reg_handoff_isis_hello ( void )
{
dissector_add_uint ( " isis.type " , ISIS_TYPE_L1_HELLO , new_create_dissector_handle ( dissect_isis_l1_hello , proto_isis_hello ) ) ;
dissector_add_uint ( " isis.type " , ISIS_TYPE_L2_HELLO , new_create_dissector_handle ( dissect_isis_l2_hello , proto_isis_hello ) ) ;
dissector_add_uint ( " isis.type " , ISIS_TYPE_PTP_HELLO , new_create_dissector_handle ( dissect_isis_ptp_hello , proto_isis_hello ) ) ;
1999-12-15 04:34:44 +00:00
}