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wireshark/packet-dvmrp.c

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/* packet-dvmrp.c 2001 Ronnie Sahlberg <rsahlber@bigpond.net.au>
* Routines for IGMP/DVMRP packet disassembly
*
* $Id: packet-dvmrp.c,v 1.2 2001/06/18 02:17:46 guy Exp $
*
* 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.
*/
/*
DVMRP DVMRP
code v1 v3
0x01 * *
0x02 * *
0x03 x
0x04 x
0x07 x
0x08 x
0x09 x
* V3 has len>=8 and byte[6]==0xff and byte[7]==0x03
DVMRP is defined in the following RFCs
RFC1075 Version 1
draft-ietf-idmr-dvmrp-v3-10.txt Version 3
V1 and V3 can be distinguished by looking at bytes 6 and 7 in the
IGMP/DVMRP header.
If header[6]==0xff and header[7]==0x03 we have version 3.
RFC1075 has typos in 3.12.2 and 3.12.4, see if you can spot them.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <stdio.h>
#include <string.h>
#include <glib.h>
#include "packet.h"
#include "ipproto.h"
#include "in_cksum.h"
#include "packet-dvmrp.h"
static int proto_dvmrp = -1;
static int hf_version = -1;
static int hf_type = -1;
static int hf_code_v1 = -1;
static int hf_checksum = -1;
static int hf_checksum_bad = -1;
static int hf_commands = -1;
static int hf_command = -1;
static int hf_count = -1;
static int hf_afi = -1;
static int hf_netmask = -1;
static int hf_metric = -1;
static int hf_dest_unr = -1;
static int hf_split_horiz = -1;
static int hf_infinity = -1;
static int hf_daddr = -1;
static int hf_maddr = -1;
static int hf_hold = -1;
static int hf_code_v3 = -1;
static int hf_capabilities = -1;
static int hf_cap_leaf = -1;
static int hf_cap_prune = -1;
static int hf_cap_genid = -1;
static int hf_cap_mtrace = -1;
static int hf_cap_snmp = -1;
static int hf_cap_netmask = -1;
static int hf_min_ver = -1;
static int hf_maj_ver = -1;
static int hf_genid = -1;
static int hf_naddr = -1;
static int hf_route = -1;
static int hf_saddr = -1;
static int hf_life = -1;
static int hf_neighbor = -1;
static int ett_dvmrp = -1;
static int ett_commands = -1;
static int ett_capabilities = -1;
static int ett_route = -1;
#define DVMRP_TYPE 0x13
static const value_string dvmrp_type[] = {
{DVMRP_TYPE, "DVMRP" },
{0, NULL}
};
#define DVMRP_V1_RESPONSE 1
#define DVMRP_V1_REQUEST 2
#define DVMRP_V1_NON_MEMBERSHIP_REPORT 3
#define DVMRP_V1_NON_MEMBERSHIP_CANCELLATION 4
static const value_string code_v1[] = {
{DVMRP_V1_RESPONSE, "Response" },
{DVMRP_V1_REQUEST, "Request" },
{DVMRP_V1_NON_MEMBERSHIP_REPORT, "Non-membership report" },
{DVMRP_V1_NON_MEMBERSHIP_CANCELLATION, "Non-membership cancellation" },
{0, NULL}
};
#define DVMRP_V3_PROBE 1
#define DVMRP_V3_REPORT 2
#define DVMRP_V3_PRUNE 7
#define DVMRP_V3_GRAFT 8
#define DVMRP_V3_GRAFT_ACK 9
static const value_string code_v3[] = {
{DVMRP_V3_PROBE, "Probe"},
{DVMRP_V3_REPORT, "Report"},
{DVMRP_V3_PRUNE, "Prune"},
{DVMRP_V3_GRAFT, "Graft"},
{DVMRP_V3_GRAFT_ACK, "Graft ACK"},
{0, NULL}
};
#define DVMRP_V3_CAP_LEAF 0x01
#define DVMRP_V3_CAP_PRUNE 0x02
#define DVMRP_V3_CAP_GENID 0x04
#define DVMRP_V3_CAP_MTRACE 0x08
#define DVMRP_V3_CAP_SNMP 0x10
#define DVMRP_V3_CAP_NETMASK 0x20
#define V1_COMMAND_NULL 0
#define V1_COMMAND_AFI 2
#define V1_COMMAND_SUBNETMASK 3
#define V1_COMMAND_METRIC 4
#define V1_COMMAND_FLAGS0 5
#define V1_COMMAND_INFINITY 6
#define V1_COMMAND_DA 7
#define V1_COMMAND_RDA 8
#define V1_COMMAND_NMR 9
#define V1_COMMAND_NMR_CANCEL 10
static const value_string command[] = {
{V1_COMMAND_NULL, "NULL" },
{V1_COMMAND_AFI, "Address Family Indicator"},
{V1_COMMAND_SUBNETMASK, "Subnetmask"},
{V1_COMMAND_METRIC, "Metric"},
{V1_COMMAND_FLAGS0, "Flags0"},
{V1_COMMAND_INFINITY, "Infinity"},
{V1_COMMAND_DA, "Destination Address"},
{V1_COMMAND_RDA, "Requested Destination Address"},
{V1_COMMAND_NMR, "Non-Membership Report"},
{V1_COMMAND_NMR_CANCEL, "Non-Membership Report Cancel"},
{0, NULL}
};
#define V1_AFI_IP 2
static const value_string afi[] = {
{V1_AFI_IP, "IP v4 Family"},
{0, NULL}
};
static const true_false_string tfs_dest_unreach = {
"Destination Unreachable",
"NOT Destination Unreachable"
};
static const true_false_string tfs_split_horiz = {
"Split Horizon concealed route",
"NOT Split Horizon concealed route"
};
static const true_false_string tfs_cap_leaf = {
"Leaf",
"NOT Leaf"
};
static const true_false_string tfs_cap_prune = {
"Prune capable",
"NOT Prune capable"
};
static const true_false_string tfs_cap_genid = {
"Genid capable",
"NOT Genid capable"
};
static const true_false_string tfs_cap_mtrace = {
"Multicast Traceroute capable",
"NOT Multicast Traceroute capable"
};
static const true_false_string tfs_cap_snmp = {
"SNMP capable",
"NOT SNMP capable"
};
static const true_false_string tfs_cap_netmask = {
"Netmask capable",
"NOT Netmask capable"
};
static void dvmrp_checksum(proto_tree *tree,tvbuff_t *tvb, int len)
{
guint16 cksum,hdrcksum;
vec_t cksum_vec[1];
cksum_vec[0].ptr = tvb_get_ptr(tvb, 0, len);
cksum_vec[0].len = len;
hdrcksum = tvb_get_ntohs(tvb, 2);
cksum = in_cksum(&cksum_vec[0],1);
if (cksum==0) {
proto_tree_add_uint_format(tree, hf_checksum, tvb, 2, 2, hdrcksum, "Header checksum: 0x%04x (correct)", hdrcksum);
} else {
proto_tree_add_item_hidden(tree, hf_checksum_bad, tvb, 2, 2, TRUE);
proto_tree_add_uint_format(tree, hf_checksum, tvb, 2, 2, hdrcksum, "Header checksum: 0x%04x (incorrect, should be 0x%04x)", hdrcksum,in_cksum_shouldbe(hdrcksum,cksum));
}
return;
}
int
dissect_v3_report(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset)
{
guint8 m0,m1,m2,m3;
guint8 s0,s1,s2,s3;
guint8 metric;
guint32 ip;
while (tvb_length_remaining(tvb, offset)) {
proto_tree *tree;
proto_item *item;
int old_offset = offset;
item = proto_tree_add_item(parent_tree, hf_route,
tvb, offset, 0, FALSE);
tree = proto_item_add_subtree(item, ett_route);
m0 = 0xff;
/* read the mask */
m1 = tvb_get_guint8(tvb, offset);
m2 = tvb_get_guint8(tvb, offset+1);
m3 = tvb_get_guint8(tvb, offset+2);
ip = m3;
ip = (ip<<8)|m2;
ip = (ip<<8)|m1;
ip = (ip<<8)|m0;
proto_tree_add_ipv4(tree, hf_netmask, tvb, offset, 3, ip);
offset += 3;
/* read every srcnet, metric pairs */
do {
int old_offset = offset;
m0 = 0xff;
s0 = 0;
s1 = 0;
s2 = 0;
s3 = 0;
s0 = tvb_get_guint8(tvb, offset);
offset += 1;
if (m1) {
s1 = tvb_get_guint8(tvb, offset);
offset += 1;
}
if (m2) {
s2 = tvb_get_guint8(tvb, offset);
offset += 1;
}
if (m3) {
s3 = tvb_get_guint8(tvb, offset);
offset += 1;
}
/* handle special case for default route V3/3.4.3 */
if ((!m1)&&(!m2)&&(!m3)&&(!s0)) {
m0 = 0;
}
ip = s3;
ip = (ip<<8)|s2;
ip = (ip<<8)|s1;
ip = (ip<<8)|s0;
proto_tree_add_ipv4_format(tree, hf_saddr, tvb,
old_offset, offset-old_offset, ip,
"%s %d.%d.%d.%d (netmask %d.%d.%d.%d)",
m0?"Source Network":"Default Route",
s0,s1,s2,s3,m0,m1,m2,m3);
metric = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_metric, tvb,
offset, 1, metric&0x7f);
offset += 1;
} while (!(metric&0x80));
proto_item_set_len(item, offset-old_offset);
}
return offset;
}
int
dissect_dvmrp_v3(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset)
{
guint8 code,count;
/* version */
proto_tree_add_uint(parent_tree, hf_version, tvb, 0, 0, 3);
/* type of command */
proto_tree_add_uint(parent_tree, hf_type, tvb, offset, 1, 0x13);
offset += 1;
/* code */
code = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(parent_tree, hf_code_v3, tvb, offset, 1, code);
offset += 1;
if (check_col(pinfo->fd, COL_INFO)) {
col_add_fstr(pinfo->fd, COL_INFO,
"V%d %s",3 ,val_to_str(code, code_v3,
"Unknown Type:0x%02x"));
}
/* checksum */
dvmrp_checksum(parent_tree, tvb, tvb_length_remaining(tvb, 0));
offset += 2;
/* skip unused byte */
offset += 1;
/* PROBE packets have capabilities flags, unused for other packets */
if (code==DVMRP_V3_PROBE) {
proto_tree *tree;
proto_item *item;
item = proto_tree_add_item(parent_tree, hf_capabilities,
tvb, offset, 1, FALSE);
tree = proto_item_add_subtree(item, ett_capabilities);
count = tvb_get_guint8(tvb, offset);
proto_tree_add_boolean(tree, hf_cap_netmask, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_cap_snmp, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_cap_mtrace, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_cap_genid, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_cap_prune, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_cap_leaf, tvb, offset, 1, count);
}
offset += 1;
/* minor version */
proto_tree_add_uint(parent_tree, hf_min_ver, tvb, offset, 1, tvb_get_guint8(tvb, offset));
offset += 1;
/* major version */
proto_tree_add_uint(parent_tree, hf_maj_ver, tvb, offset, 1, tvb_get_guint8(tvb, offset));
offset += 1;
switch (code) {
case DVMRP_V3_PROBE:
/* generation id */
proto_tree_add_uint(parent_tree, hf_genid, tvb,
offset, 4, tvb_get_ntohl(tvb, offset));
offset += 4;
while (tvb_length_remaining(tvb, offset)) {
proto_tree_add_ipv4(parent_tree, hf_neighbor,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
break;
case DVMRP_V3_REPORT:
offset = dissect_v3_report(tvb, pinfo, parent_tree, offset);
break;
case DVMRP_V3_PRUNE:
/* source address */
proto_tree_add_ipv4(parent_tree, hf_saddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* group address */
proto_tree_add_ipv4(parent_tree, hf_maddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* prune lifetime */
proto_tree_add_uint(parent_tree, hf_life,
tvb, offset, 4,
tvb_get_ntohl(tvb, offset));
offset += 4;
/* source netmask */
if (tvb_length_remaining(tvb, offset)>=4) {
proto_tree_add_ipv4(parent_tree, hf_netmask,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
break;
case DVMRP_V3_GRAFT:
/* source address */
proto_tree_add_ipv4(parent_tree, hf_saddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* group address */
proto_tree_add_ipv4(parent_tree, hf_maddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* source netmask */
if (tvb_length_remaining(tvb, offset)>=4) {
proto_tree_add_ipv4(parent_tree, hf_netmask,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
break;
case DVMRP_V3_GRAFT_ACK:
/* source address */
proto_tree_add_ipv4(parent_tree, hf_saddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* group address */
proto_tree_add_ipv4(parent_tree, hf_maddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
/* source netmask */
if (tvb_length_remaining(tvb, offset)>=4) {
proto_tree_add_ipv4(parent_tree, hf_netmask,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
break;
}
return offset;
}
int
dissect_dvmrp_v1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset)
{
guint8 code;
guint8 af=2; /* default */
/* version */
proto_tree_add_uint(parent_tree, hf_version, tvb, 0, 0, 1);
/* type of command */
proto_tree_add_uint(parent_tree, hf_type, tvb, offset, 1, 0x13);
offset += 1;
/* code */
code = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(parent_tree, hf_code_v1, tvb, offset, 1, code);
offset += 1;
if (check_col(pinfo->fd, COL_INFO)) {
col_add_fstr(pinfo->fd, COL_INFO,
"V%d %s",1 ,val_to_str(code, code_v1,
"Unknown Type:0x%02x"));
}
/* checksum */
dvmrp_checksum(parent_tree, tvb, tvb_length_remaining(tvb, 0));
offset += 2;
/* decode all the v1 commands */
while (tvb_length_remaining(tvb, offset)) {
proto_tree *tree;
proto_item *item;
guint8 cmd,count;
int old_offset = offset;
item = proto_tree_add_item(parent_tree, hf_commands,
tvb, offset, 0, FALSE);
tree = proto_item_add_subtree(item, ett_commands);
cmd = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_command, tvb,
offset, 1, cmd);
offset += 1;
switch (cmd){
case V1_COMMAND_NULL:
offset += 1; /* skip ignored/pad byte*/
if (item) {
proto_item_set_text(item, "Command: NULL");
}
break;
case V1_COMMAND_AFI:
af = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_afi, tvb,
offset, 1, af);
offset += 1;
if (item) {
proto_item_set_text(item, "%s: %s",
val_to_str(cmd, command, "Unknown Command:0x%02x"),
val_to_str(af, afi, "Unknown Family:0x%02x")
);
}
break;
case V1_COMMAND_SUBNETMASK:
count = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_count, tvb,
offset, 1, count);
offset += 1;
if (count) { /* must be 0 or 1 */
proto_tree_add_ipv4(tree, hf_netmask,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
if (item) {
proto_item_set_text(item, "%s: %d.%d.%d.%d",
val_to_str(cmd, command, "Unknown Command:0x%02x"),
tvb_get_guint8(tvb, offset),
tvb_get_guint8(tvb, offset+1),
tvb_get_guint8(tvb, offset+2),
tvb_get_guint8(tvb, offset+3));
}
offset += 4;
} else {
if (item) {
proto_item_set_text(item, "%s: <no mask supplied>",
val_to_str(cmd, command, "Unknown Command:0x%02x"));
}
}
break;
case V1_COMMAND_METRIC:
proto_tree_add_uint(tree, hf_metric, tvb,
offset, 1, tvb_get_guint8(tvb, offset));
if (item) {
proto_item_set_text(item, "%s: %d",
val_to_str(cmd, command, "Unknown Command:0x%02x"),
tvb_get_guint8(tvb, offset));
}
offset += 1;
break;
case V1_COMMAND_FLAGS0:
count = tvb_get_guint8(tvb, offset);
proto_tree_add_boolean(tree, hf_dest_unr, tvb, offset, 1, count);
proto_tree_add_boolean(tree, hf_split_horiz, tvb, offset, 1, count);
if (item) {
proto_item_set_text(item, "%s: 0x%02x",
val_to_str(cmd, command, "Unknown Command:0x%02x"), count);
}
offset += 1;
break;
case V1_COMMAND_INFINITY:
proto_tree_add_uint(tree, hf_infinity, tvb,
offset, 1, tvb_get_guint8(tvb, offset));
if (item) {
proto_item_set_text(item, "%s: %d",
val_to_str(cmd, command, "Unknown Command:0x%02x"), tvb_get_guint8(tvb, offset));
}
offset += 1;
break;
case V1_COMMAND_DA:
case V1_COMMAND_RDA: /* same as DA */
count = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_count, tvb,
offset, 1, count);
offset += 1;
while (count--) {
proto_tree_add_ipv4(tree, hf_daddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
if (item) {
proto_item_set_text(item, "%s",
val_to_str(cmd, command, "Unknown Command:0x%02x"));
}
break;
case V1_COMMAND_NMR:
count = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_count, tvb,
offset, 1, count);
offset += 1;
while (count--) {
proto_tree_add_ipv4(tree, hf_maddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
proto_tree_add_uint(tree, hf_hold, tvb,
offset, 4, tvb_get_ntohl(tvb, offset));
offset += 4;
}
if (item) {
proto_item_set_text(item, "%s",
val_to_str(cmd, command, "Unknown Command:0x%02x"));
}
break;
case V1_COMMAND_NMR_CANCEL:
count = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_count, tvb,
offset, 1, count);
offset += 1;
while (count--) {
proto_tree_add_ipv4(tree, hf_maddr,
tvb, offset, 4,
tvb_get_letohl(tvb, offset));
offset += 4;
}
if (item) {
proto_item_set_text(item, "%s",
val_to_str(cmd, command, "Unknown Command:0x%02x"));
}
break;
}
proto_item_set_len(item, offset-old_offset);
}
return offset;
}
/* This function is only called from the IGMP dissector */
int
dissect_dvmrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset)
{
proto_tree *tree;
proto_item *item;
if (!proto_is_protocol_enabled(proto_dvmrp)) {
/* we are not enabled, skip entire packet to be nice
to the igmp layer. (so clicking on IGMP will display the data)
*/
return offset+tvb_length_remaining(tvb, offset);
}
item = proto_tree_add_item(parent_tree, proto_dvmrp, tvb, offset, 0, FALSE);
tree = proto_item_add_subtree(item, ett_dvmrp);
if (check_col(pinfo->fd, COL_PROTOCOL)) {
col_set_str(pinfo->fd, COL_PROTOCOL, "DVMRP");
}
if (check_col(pinfo->fd, COL_INFO)) {
col_clear(pinfo->fd, COL_INFO);
}
if ((tvb_length_remaining(tvb, offset)>=8)
&& (tvb_get_guint8(tvb, 6)==0xff)
&& (tvb_get_guint8(tvb, 7)==0x03)) {
offset = dissect_dvmrp_v3(tvb, pinfo, tree, offset);
proto_item_set_len(item, offset);
return offset;
}
offset = dissect_dvmrp_v1(tvb, pinfo, tree, offset);
proto_item_set_len(item, offset);
return offset;
}
void
proto_register_dvmrp(void)
{
static hf_register_info hf[] = {
{ &hf_version,
{ "DVMRP Version", "dvmrp.version", FT_UINT8, BASE_DEC,
NULL, 0, "DVMRP Version", HFILL }},
{ &hf_type,
{ "Type", "dvmrp.type", FT_UINT8, BASE_HEX,
VALS(dvmrp_type), 0, "DVMRP Packet Type", HFILL }},
{ &hf_code_v1,
{ "Code", "dvmrp.v1.code", FT_UINT8, BASE_HEX,
VALS(code_v1), 0, "DVMRP Packet Code", HFILL }},
{ &hf_checksum,
{ "Checksum", "dvmrp.checksum", FT_UINT16, BASE_HEX,
NULL, 0, "DVMRP Checksum", HFILL }},
{ &hf_checksum_bad,
{ "Bad Checksum", "dvmrp.checksum_bad", FT_BOOLEAN, BASE_NONE,
NULL, 0, "Bad DVMRP Checksum", HFILL }},
{ &hf_commands,
{ "Commands", "dvmrp.commands", FT_NONE, BASE_NONE,
NULL, 0, "DVMRP V1 Commands", HFILL }},
{ &hf_command,
{ "Command", "dvmrp.command", FT_UINT8, BASE_HEX,
VALS(command), 0, "DVMRP V1 Command", HFILL }},
{ &hf_afi,
{ "Address Family", "dvmrp.afi", FT_UINT8, BASE_HEX,
VALS(afi), 0, "DVMRP Address Family Indicator", HFILL }},
{ &hf_count,
{ "Count", "dvmrp.count", FT_UINT8, BASE_HEX,
NULL, 0, "Count", HFILL }},
{ &hf_netmask,
{ "Netmask", "igmp.netmask", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Netmask", HFILL }},
{ &hf_metric,
{ "Metric", "dvmrp.metric", FT_UINT8, BASE_DEC,
NULL, 0, "DVMRP Metric", HFILL }},
{&hf_dest_unr,
{ "Destination Unreachable", "dvmrp.dest_unreach", FT_BOOLEAN, 8,
TFS(&tfs_dest_unreach), 0x01, "Destination Unreachable", HFILL }},
{&hf_split_horiz,
{ "Split Horizon", "dvmrp.split_horiz", FT_BOOLEAN, 8,
TFS(&tfs_split_horiz), 0x02, "Split Horizon concealed route", HFILL }},
{ &hf_infinity,
{ "Infinity", "dvmrp.infinity", FT_UINT8, BASE_DEC,
NULL, 0, "DVMRP Infinity", HFILL }},
{ &hf_daddr,
{ "Dest Addr", "igmp.daddr", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Destination Address", HFILL }},
{ &hf_maddr,
{ "Multicast Addr", "igmp.maddr", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Multicast Address", HFILL }},
{ &hf_hold,
{ "Hold Time", "dvmrp.hold", FT_UINT32, BASE_DEC,
NULL, 0, "DVMRP Hold Time in seconds", HFILL }},
{ &hf_code_v3,
{ "Code", "dvmrp.v3.code", FT_UINT8, BASE_HEX,
VALS(code_v3), 0, "DVMRP Packet Code", HFILL }},
{ &hf_capabilities,
{ "Capabilities", "dvmrp.capabilities", FT_NONE, BASE_NONE,
NULL, 0, "DVMRP V3 Capabilities", HFILL }},
{&hf_cap_leaf,
{ "Leaf", "dvmrp.cap.leaf", FT_BOOLEAN, 8,
TFS(&tfs_cap_leaf), DVMRP_V3_CAP_LEAF, "Leaf", HFILL }},
{&hf_cap_prune,
{ "Prune", "dvmrp.cap.prune", FT_BOOLEAN, 8,
TFS(&tfs_cap_prune), DVMRP_V3_CAP_PRUNE, "Prune capability", HFILL }},
{&hf_cap_genid,
{ "Genid", "dvmrp.cap.genid", FT_BOOLEAN, 8,
TFS(&tfs_cap_genid), DVMRP_V3_CAP_GENID, "Genid capability", HFILL }},
{&hf_cap_mtrace,
{ "Mtrace", "dvmrp.cap.mtrace", FT_BOOLEAN, 8,
TFS(&tfs_cap_mtrace), DVMRP_V3_CAP_MTRACE, "Mtrace capability", HFILL }},
{&hf_cap_snmp,
{ "SNMP", "dvmrp.cap.snmp", FT_BOOLEAN, 8,
TFS(&tfs_cap_snmp), DVMRP_V3_CAP_SNMP, "SNMP capability", HFILL }},
{&hf_cap_netmask,
{ "Netmask", "dvmrp.cap.netmask", FT_BOOLEAN, 8,
TFS(&tfs_cap_netmask), DVMRP_V3_CAP_NETMASK, "Netmask capability", HFILL }},
{ &hf_min_ver,
{ "Minor Version", "dvmrp.min_ver", FT_UINT8, BASE_HEX,
NULL, 0, "DVMRP Minor Version", HFILL }},
{ &hf_maj_ver,
{ "Major Version", "dvmrp.maj_ver", FT_UINT8, BASE_HEX,
NULL, 0, "DVMRP Major Version", HFILL }},
{ &hf_genid,
{ "Generation ID", "dvmrp.genid", FT_UINT32, BASE_DEC,
NULL, 0, "DVMRP Generation ID", HFILL }},
{ &hf_naddr,
{ "Neighbor Addr", "igmp.naddr", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Neighbor Address", HFILL }},
{ &hf_route,
{ "Route", "dvmrp.route", FT_NONE, BASE_NONE,
NULL, 0, "DVMRP V3 Route Report", HFILL }},
{ &hf_saddr,
{ "Source Addr", "igmp.saddr", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Source Address", HFILL }},
{ &hf_life,
{ "Prune lifetime", "dvmrp.lifetime", FT_UINT32, BASE_DEC,
NULL, 0, "DVMRP Prune Lifetime", HFILL }},
{ &hf_neighbor,
{ "Neighbor Addr", "igmp.neighbor", FT_IPv4, BASE_NONE,
NULL, 0, "DVMRP Neighbor Address", HFILL }},
};
static gint *ett[] = {
&ett_dvmrp,
&ett_commands,
&ett_capabilities,
&ett_route,
};
proto_dvmrp = proto_register_protocol("Distance Vector Multicast Routing Protocol",
"DVMRP", "dvmrp");
proto_register_field_array(proto_dvmrp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
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