2009-04-27 16:57:02 +00:00
|
|
|
/* packet-pw-satop.c
|
|
|
|
* Routines for CESoPSN PW dissection as per RFC5086.
|
|
|
|
* Copyright 2009, Dmitry Trebich, Artem Tamazov <artem.tamazov@tellabs.com>
|
|
|
|
*
|
|
|
|
* $Id$
|
|
|
|
*
|
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.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
|
2012-06-28 23:18:38 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
2009-04-27 16:57:02 +00:00
|
|
|
*
|
|
|
|
* History:
|
|
|
|
* ---------------------------------
|
2009-09-10 15:30:10 +00:00
|
|
|
* 16.03.2009 initial implementation for MPLS
|
|
|
|
* 14.08.2009 added: support for IP/UDP demultiplexing
|
|
|
|
* Not supported yet:
|
2009-04-27 16:57:02 +00:00
|
|
|
* - All PW modes, except Basic NxDS0 mode.
|
|
|
|
* - <Optional> RTP Headers (RFC3550)
|
|
|
|
* - Decoding of PW payload
|
|
|
|
*/
|
|
|
|
|
2012-09-20 02:03:38 +00:00
|
|
|
#include "config.h"
|
2009-04-27 16:57:02 +00:00
|
|
|
|
|
|
|
#include <glib.h>
|
2012-05-15 19:23:35 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
#include <epan/packet.h>
|
|
|
|
#include <epan/expert.h>
|
|
|
|
|
|
|
|
#include "packet-mpls.h"
|
|
|
|
#include "packet-pw-common.h"
|
|
|
|
|
|
|
|
static gint proto = -1;
|
|
|
|
static gint ett = -1;
|
|
|
|
|
|
|
|
static int hf_cw = -1;
|
|
|
|
static int hf_cw_bits03 = -1;
|
|
|
|
static int hf_cw_lm = -1;
|
|
|
|
static int hf_cw_r = -1;
|
|
|
|
static int hf_cw_frg = -1;
|
|
|
|
static int hf_cw_len = -1;
|
|
|
|
static int hf_cw_seq = -1;
|
|
|
|
static int hf_payload = -1;
|
2009-06-29 19:24:14 +00:00
|
|
|
static int hf_payload_l = -1;
|
2009-04-27 16:57:02 +00:00
|
|
|
|
|
|
|
static dissector_handle_t data_handle;
|
2009-06-29 19:24:14 +00:00
|
|
|
static dissector_handle_t pw_padding_handle;
|
2009-04-27 16:57:02 +00:00
|
|
|
|
2009-06-29 19:24:14 +00:00
|
|
|
const char pwc_longname_pw_cesopsn[] = "CESoPSN basic NxDS0 mode (no RTP support)";
|
2009-04-27 16:57:02 +00:00
|
|
|
static const char shortname[] = "CESoPSN basic (no RTP)";
|
|
|
|
|
|
|
|
static const value_string vals_cw_lm[] = {
|
|
|
|
/* note that bitmask in hs_register_info is 0xb == 1011B */
|
|
|
|
/* this is why 0x8 comes just after 0x3 */
|
|
|
|
{ 0x0, "Normal situation - no AC faults" },
|
|
|
|
/*{ 0x1, "Reserved combination" },*/
|
|
|
|
{ 0x2, "AC Fault - RDI condition" },
|
|
|
|
{ 0x3, "Reserved for CESoPSN signaling" },
|
|
|
|
{ 0x8, "AC Fault - TDM data is invalid" },
|
|
|
|
/*{ 0x9, "Reserved combination" },*/
|
|
|
|
/*{ 0xa, "Reserved combination" },*/
|
|
|
|
/*{ 0xb, "Reserved combination" },*/
|
|
|
|
{ 0, NULL }
|
|
|
|
};
|
|
|
|
|
2009-09-10 15:30:10 +00:00
|
|
|
|
|
|
|
static
|
|
|
|
void dissect_pw_cesopsn( tvbuff_t * tvb_original
|
|
|
|
,packet_info * pinfo
|
|
|
|
,proto_tree * tree
|
|
|
|
,pwc_demux_type_t demux)
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
const int encaps_size = 4; /*RTP header in encapsulation is not supported yet*/
|
2012-09-28 19:50:49 +00:00
|
|
|
gint packet_size;
|
|
|
|
gint payload_size;
|
|
|
|
gint padding_size;
|
2013-03-18 21:16:23 +00:00
|
|
|
int properties;
|
2009-04-27 16:57:02 +00:00
|
|
|
|
|
|
|
packet_size = tvb_reported_length_remaining(tvb_original, 0);
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
/*
|
|
|
|
* FIXME
|
|
|
|
* "4" below should be replaced by something like "min_packet_size_this_dissector"
|
|
|
|
* Also call to dissect_try_cw_first_nibble() should be moved before this block
|
|
|
|
*/
|
|
|
|
if (packet_size < 4) /* 4 is smallest size which may be sensible (for PWACH dissector) */
|
|
|
|
{
|
2012-09-28 19:50:49 +00:00
|
|
|
proto_item *item;
|
|
|
|
item = proto_tree_add_item(tree, proto, tvb_original, 0, -1, ENC_NA);
|
|
|
|
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR,
|
|
|
|
"PW packet size (%d) is too small to carry sensible information"
|
|
|
|
,(int)packet_size);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, shortname);
|
2009-08-09 07:59:51 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Malformed: PW packet is too small");
|
2009-04-27 16:57:02 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-09-10 15:30:10 +00:00
|
|
|
switch (demux)
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
2009-09-10 15:30:10 +00:00
|
|
|
case PWC_DEMUX_MPLS:
|
|
|
|
if (dissect_try_cw_first_nibble(tvb_original, pinfo, tree))
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case PWC_DEMUX_UDP:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
2009-04-27 16:57:02 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* check how "good" is this packet */
|
|
|
|
/* also decide payload length from packet size and CW */
|
2009-06-29 19:24:14 +00:00
|
|
|
properties = PWC_PACKET_PROPERTIES_T_INITIALIZER;
|
2009-04-27 16:57:02 +00:00
|
|
|
if (0 != (tvb_get_guint8(tvb_original, 0) & 0xf0 /*bits03*/))
|
|
|
|
{
|
|
|
|
properties |= PWC_CW_BAD_BITS03;
|
|
|
|
}
|
|
|
|
if (0 != (tvb_get_guint8(tvb_original, 1) & 0xc0 /*frag*/))
|
|
|
|
{
|
|
|
|
properties |= PWC_CW_BAD_FRAG;
|
|
|
|
}
|
|
|
|
{
|
|
|
|
/* RFC5086:
|
|
|
|
* [LEN (bits (10 to 15) MAY be used to carry the length of the CESoPSN
|
|
|
|
* packet (defined as the size of the CESoPSN header + the payload size)
|
|
|
|
* if it is less than 64 bytes, and MUST be set to zero otherwise.
|
|
|
|
* Note: If fixed RTP header is used in the encapsulation, it is
|
|
|
|
* considered part of the CESoPSN header.]
|
|
|
|
*
|
|
|
|
* Note that this differs from RFC4385's definition of length:
|
|
|
|
* [ If the MPLS payload is less than 64 bytes, the length field
|
|
|
|
* MUST be set to the length of the PW payload...]
|
|
|
|
*
|
|
|
|
* We will use RFC5086's definition here.
|
|
|
|
*/
|
2012-09-28 19:50:49 +00:00
|
|
|
int cw_len;
|
2009-04-27 16:57:02 +00:00
|
|
|
gint payload_size_from_packet;
|
|
|
|
|
|
|
|
cw_len = tvb_get_guint8(tvb_original, 1) & 0x3f;
|
|
|
|
payload_size_from_packet = packet_size - encaps_size;
|
|
|
|
if (cw_len != 0)
|
|
|
|
{
|
|
|
|
gint payload_size_from_cw;
|
|
|
|
payload_size_from_cw = cw_len - encaps_size;
|
|
|
|
/*
|
|
|
|
* Assumptions for error case,
|
|
|
|
* will be overwritten if no errors found:
|
|
|
|
*/
|
|
|
|
payload_size = payload_size_from_packet;
|
|
|
|
padding_size = 0;
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
if (payload_size_from_cw < 0)
|
|
|
|
{
|
|
|
|
properties |= PWC_CW_BAD_PAYLEN_LT_0;
|
|
|
|
}
|
|
|
|
else if (payload_size_from_cw > payload_size_from_packet)
|
|
|
|
{
|
|
|
|
properties |= PWC_CW_BAD_PAYLEN_GT_PACKET;
|
|
|
|
}
|
|
|
|
else if (payload_size_from_packet >= 64)
|
|
|
|
{
|
|
|
|
properties |= PWC_CW_BAD_LEN_MUST_BE_0;
|
|
|
|
}
|
|
|
|
else /* ok */
|
|
|
|
{
|
|
|
|
payload_size = payload_size_from_cw;
|
|
|
|
padding_size = payload_size_from_packet - payload_size_from_cw; /* >=0 */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
payload_size = payload_size_from_packet;
|
|
|
|
padding_size = 0;
|
|
|
|
}
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
guint8 cw_lm;
|
|
|
|
cw_lm = tvb_get_guint8(tvb_original, 0) & 0x0b /*l+mod*/;
|
2013-03-29 00:26:23 +00:00
|
|
|
if (NULL == try_val_to_str(cw_lm, vals_cw_lm))
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
properties |= PWC_CW_SUSPECT_LM;
|
|
|
|
}
|
|
|
|
|
|
|
|
{
|
|
|
|
guint8 l_bit, m_bits;
|
|
|
|
l_bit = (cw_lm & 0x08) >> 3;
|
|
|
|
m_bits = (cw_lm & 0x03) >> 0;
|
|
|
|
if ((l_bit == 0 && m_bits == 0x0) /*CESoPSN data packet - normal situation*/
|
|
|
|
||(l_bit == 0 && m_bits == 0x2) /*CESoPSN data packet - RDI on the AC*/ )
|
|
|
|
{
|
|
|
|
if ((payload_size == 0) || ((payload_size % 8) != 0))
|
|
|
|
{
|
|
|
|
properties |= PWC_PAY_SIZE_BAD;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (l_bit == 1 && m_bits == 0x0) /*TDM data is invalid; payload MAY be omitted*/
|
|
|
|
{
|
|
|
|
/*allow any size of payload*/
|
|
|
|
}
|
|
|
|
else /*reserved combinations*/
|
|
|
|
{
|
|
|
|
/*allow any size of payload*/
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* fill up columns*/
|
2012-09-28 19:50:49 +00:00
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, shortname);
|
2013-06-14 01:56:28 +00:00
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (properties & PWC_ANYOF_CW_BAD)
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
2013-06-14 01:56:28 +00:00
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "CW:Bad, ");
|
|
|
|
}
|
|
|
|
else if (properties & PWC_ANYOF_CW_SUSPECT)
|
|
|
|
{
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "CW:Suspect, ");
|
|
|
|
}
|
2009-04-27 16:57:02 +00:00
|
|
|
|
2013-06-14 01:56:28 +00:00
|
|
|
if (properties & PWC_PAY_SIZE_BAD)
|
|
|
|
{
|
|
|
|
col_append_str(pinfo->cinfo, COL_INFO, "Payload size:Bad, ");
|
|
|
|
}
|
2009-04-27 16:57:02 +00:00
|
|
|
|
2013-06-14 01:56:28 +00:00
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "TDM octets:%d", (int)payload_size);
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2013-06-14 01:56:28 +00:00
|
|
|
if (padding_size != 0)
|
|
|
|
{
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", Padding:%d", (int)padding_size);
|
2009-04-27 16:57:02 +00:00
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
proto_item* item;
|
2011-10-21 02:10:19 +00:00
|
|
|
item = proto_tree_add_item(tree, proto, tvb_original, 0, -1, ENC_NA);
|
2009-04-27 16:57:02 +00:00
|
|
|
pwc_item_append_cw(item,tvb_get_ntohl(tvb_original, 0),TRUE);
|
|
|
|
pwc_item_append_text_n_items(item,(int)payload_size,"octet");
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_tree* tree2;
|
|
|
|
tree2 = proto_item_add_subtree(item, ett);
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
tvbuff_t* tvb;
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_item* item2;
|
2009-04-27 16:57:02 +00:00
|
|
|
tvb = tvb_new_subset(tvb_original, 0, PWC_SIZEOF_CW, PWC_SIZEOF_CW);
|
2011-10-04 22:44:31 +00:00
|
|
|
item2 = proto_tree_add_item(tree2, hf_cw, tvb, 0, -1, ENC_NA);
|
2010-01-22 13:56:19 +00:00
|
|
|
pwc_item_append_cw(item2,tvb_get_ntohl(tvb, 0),FALSE);
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_tree* tree3;
|
|
|
|
tree3 = proto_item_add_subtree(item, ett);
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_item* item3;
|
2009-04-27 16:57:02 +00:00
|
|
|
if (properties & PWC_CW_BAD_BITS03) /*display only if value is wrong*/
|
|
|
|
{
|
2011-10-06 03:35:44 +00:00
|
|
|
item3 = proto_tree_add_item(tree3, hf_cw_bits03, tvb, 0, 1, ENC_BIG_ENDIAN);
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Bits 0..3 of Control Word must be 0");
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2011-10-16 23:38:49 +00:00
|
|
|
item3 = proto_tree_add_item(tree3, hf_cw_lm, tvb, 0, 1, ENC_BIG_ENDIAN);
|
2009-04-27 16:57:02 +00:00
|
|
|
if (properties & PWC_CW_SUSPECT_LM)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_UNDECODED, PI_WARN
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Reserved combination of L and Modifier bits");
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(tree3, hf_cw_r, tvb, 0, 1, ENC_BIG_ENDIAN);
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
item3 = proto_tree_add_item(tree3, hf_cw_frg, tvb, 1, 1, ENC_BIG_ENDIAN);
|
2009-04-27 16:57:02 +00:00
|
|
|
if (properties & PWC_CW_BAD_FRAG)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Fragmentation of payload is not allowed"
|
|
|
|
" for basic CESoPSN mode");
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
item3 = proto_tree_add_item(tree3, hf_cw_len, tvb, 1, 1, ENC_BIG_ENDIAN);
|
2009-04-27 16:57:02 +00:00
|
|
|
if (properties & PWC_CW_BAD_PAYLEN_LT_0)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Bad Length: too small, must be > %d"
|
|
|
|
,(int)encaps_size);
|
|
|
|
}
|
|
|
|
if (properties & PWC_CW_BAD_PAYLEN_GT_PACKET)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Bad Length: must be <= than PSN packet size (%d)"
|
|
|
|
,(int)packet_size);
|
|
|
|
}
|
|
|
|
if (properties & PWC_CW_BAD_LEN_MUST_BE_0)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item3, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"Bad Length: must be 0 if CESoPSN packet size (%d) is > 64"
|
|
|
|
,(int)packet_size);
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2011-10-06 03:35:44 +00:00
|
|
|
proto_tree_add_item(tree3, hf_cw_seq, tvb, 2, 2, ENC_BIG_ENDIAN);
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* payload */
|
|
|
|
if (payload_size == 0)
|
|
|
|
{
|
|
|
|
if (properties & PWC_PAY_SIZE_BAD)
|
|
|
|
{
|
|
|
|
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR
|
|
|
|
,"CESoPSN payload: none found. Size of payload must be <> 0");
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
expert_add_info_format(pinfo, item, PI_UNDECODED, PI_NOTE
|
|
|
|
,"CESoPSN payload: omitted to conserve bandwidth");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_tree* tree2;
|
|
|
|
tree2 = proto_item_add_subtree(item, ett);
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_item* item2;
|
2009-04-27 16:57:02 +00:00
|
|
|
tvbuff_t* tvb;
|
|
|
|
tvb = tvb_new_subset(tvb_original, PWC_SIZEOF_CW, payload_size, payload_size);
|
2011-10-04 22:44:31 +00:00
|
|
|
item2 = proto_tree_add_item(tree2, hf_payload, tvb, 0, -1, ENC_NA);
|
2010-01-22 13:56:19 +00:00
|
|
|
pwc_item_append_text_n_items(item2,(int)payload_size,"octet");
|
2009-04-27 16:57:02 +00:00
|
|
|
if (properties & PWC_PAY_SIZE_BAD)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
expert_add_info_format(pinfo, item2, PI_MALFORMED, PI_ERROR
|
2009-04-27 16:57:02 +00:00
|
|
|
,"CESoPSN packet payload size must be multiple of 8");
|
|
|
|
}
|
2010-01-22 13:56:19 +00:00
|
|
|
tree2 = proto_item_add_subtree(item2, ett);
|
|
|
|
call_dissector(data_handle, tvb, pinfo, tree2);
|
|
|
|
item2 = proto_tree_add_int(tree2, hf_payload_l, tvb, 0, 0
|
2009-06-29 19:24:14 +00:00
|
|
|
,(int)payload_size); /* allow filtering */
|
2010-01-22 13:56:19 +00:00
|
|
|
PROTO_ITEM_SET_HIDDEN(item2);
|
2009-04-27 16:57:02 +00:00
|
|
|
}
|
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
/* padding */
|
|
|
|
if (padding_size > 0)
|
|
|
|
{
|
2010-01-22 13:56:19 +00:00
|
|
|
proto_tree* tree2;
|
|
|
|
tree2 = proto_item_add_subtree(item, ett);
|
2009-04-27 16:57:02 +00:00
|
|
|
{
|
|
|
|
tvbuff_t* tvb;
|
|
|
|
tvb = tvb_new_subset(tvb_original, PWC_SIZEOF_CW + payload_size, padding_size, -1);
|
2010-01-22 13:56:19 +00:00
|
|
|
call_dissector(pw_padding_handle, tvb, pinfo, tree2);
|
2009-04-27 16:57:02 +00:00
|
|
|
}
|
2009-09-10 15:30:10 +00:00
|
|
|
}
|
2009-04-27 16:57:02 +00:00
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-09-10 15:30:10 +00:00
|
|
|
|
|
|
|
static
|
|
|
|
void dissect_pw_cesopsn_mpls( tvbuff_t * tvb_original, packet_info * pinfo, proto_tree * tree)
|
|
|
|
{
|
|
|
|
dissect_pw_cesopsn(tvb_original,pinfo,tree,PWC_DEMUX_MPLS);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static
|
|
|
|
void dissect_pw_cesopsn_udp( tvbuff_t * tvb_original, packet_info * pinfo, proto_tree * tree)
|
|
|
|
{
|
|
|
|
dissect_pw_cesopsn(tvb_original,pinfo,tree,PWC_DEMUX_UDP);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
void proto_register_pw_cesopsn(void)
|
|
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
2010-04-25 17:38:46 +00:00
|
|
|
{ &hf_cw ,{"Control Word" ,"pwcesopsn.cw"
|
2013-01-26 16:31:24 +00:00
|
|
|
,FT_NONE ,BASE_NONE ,NULL
|
|
|
|
,0 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_cw_bits03,{"Bits 0 to 3" ,"pwcesopsn.cw.bits03"
|
2009-04-27 16:57:02 +00:00
|
|
|
,FT_UINT8 ,BASE_DEC ,NULL
|
2013-01-26 16:31:24 +00:00
|
|
|
,0xf0 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{ &hf_cw_lm, {"L+M bits" ,"pwcesopsn.cw.lm"
|
|
|
|
,FT_UINT8 ,BASE_HEX ,VALS(vals_cw_lm)
|
|
|
|
,0x0b ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_cw_r, {"R bit: Local CE-bound IWF" ,"pwcesopsn.cw.rbit"
|
|
|
|
,FT_UINT8 ,BASE_DEC ,VALS(pwc_vals_cw_r_bit)
|
|
|
|
,0x04 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_cw_frg, {"Fragmentation" ,"pwcesopsn.cw.frag"
|
|
|
|
,FT_UINT8 ,BASE_DEC ,VALS(pwc_vals_cw_frag)
|
|
|
|
,0xc0 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_cw_len, {"Length" ,"pwcesopsn.cw.length"
|
|
|
|
,FT_UINT8 ,BASE_DEC ,NULL
|
|
|
|
,0x3f ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_cw_seq, {"Sequence number" ,"pwcesopsn.cw.seqno"
|
|
|
|
,FT_UINT16 ,BASE_DEC ,NULL
|
|
|
|
,0 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_payload ,{"TDM payload" ,"pwcesopsn.payload"
|
|
|
|
,FT_BYTES ,BASE_NONE ,NULL
|
|
|
|
,0 ,NULL ,HFILL }},
|
|
|
|
|
|
|
|
{&hf_payload_l ,{"TDM payload length" ,"pwcesopsn.payload.len"
|
|
|
|
,FT_INT32 ,BASE_DEC ,NULL
|
|
|
|
,0 ,NULL ,HFILL }}
|
2009-04-27 16:57:02 +00:00
|
|
|
};
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
static gint *ett_array[] = {
|
|
|
|
&ett
|
|
|
|
};
|
|
|
|
|
|
|
|
proto = proto_register_protocol(pwc_longname_pw_cesopsn, shortname, "pwcesopsn");
|
|
|
|
proto_register_field_array(proto, hf, array_length(hf));
|
|
|
|
proto_register_subtree_array(ett_array, array_length(ett_array));
|
2009-09-10 15:30:10 +00:00
|
|
|
register_dissector("pw_cesopsn_mpls", dissect_pw_cesopsn_mpls, proto);
|
|
|
|
register_dissector("pw_cesopsn_udp", dissect_pw_cesopsn_udp, proto);
|
2009-04-27 16:57:02 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-09-10 15:30:10 +00:00
|
|
|
|
2009-04-27 16:57:02 +00:00
|
|
|
void proto_reg_handoff_pw_cesopsn(void)
|
|
|
|
{
|
2009-04-28 02:06:35 +00:00
|
|
|
data_handle = find_dissector("data");
|
2009-06-29 19:24:14 +00:00
|
|
|
pw_padding_handle = find_dissector("pw_padding");
|
2012-09-28 19:50:49 +00:00
|
|
|
dissector_add_uint("mpls.label", MPLS_LABEL_INVALID, find_dissector("pw_cesopsn_mpls"));
|
2009-09-10 15:30:10 +00:00
|
|
|
dissector_add_handle("udp.port", find_dissector("pw_cesopsn_udp")); /* For Decode-As */
|
2009-04-27 16:57:02 +00:00
|
|
|
return;
|
|
|
|
}
|