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/* packet-ax4000.c
* Routines for Spirent AX/4000 Test Block dissection
* Copyright 2004, SEKINE Hideki <sekineh@gf7.so-net.ne.jp>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/ipproto.h>
void proto_register_ax4000(void);
void proto_reg_handoff_ax4000(void);
static dissector_handle_t ax4000_handle;
/* Initialize the protocol and registered fields */
static int proto_ax4000;
static int hf_ax4000_port;
static int hf_ax4000_chassis;
static int hf_ax4000_fill;
static int hf_ax4000_index;
static int hf_ax4000_timestamp;
static int hf_ax4000_seq;
static int hf_ax4000_crc;
/* Initialize the subtree pointers */
static int ett_ax4000;
/* Code to actually dissect the packets */
static int
dissect_ax4000(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *ti;
proto_tree *ax4000_tree;
uint32_t ax_port, ax_chassis, ax_index, ax_seq, ax_timestamp;
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AX4000");
col_clear(pinfo->cinfo, COL_INFO);
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_ax4000, tvb, 0, -1, ENC_NA);
ax4000_tree = proto_item_add_subtree(ti, ett_ax4000);
proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_port, tvb, 0, 1, ENC_LITTLE_ENDIAN, &ax_port);
proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_chassis, tvb, 1, 1, ENC_LITTLE_ENDIAN, &ax_chassis);
proto_tree_add_item(ax4000_tree, hf_ax4000_fill, tvb, 2, 1, ENC_BIG_ENDIAN);
proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_index, tvb, 2, 2, ENC_BIG_ENDIAN, &ax_index);
proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_timestamp, tvb, 6, 4, ENC_LITTLE_ENDIAN, &ax_timestamp);
proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_seq, tvb, 10, 4, ENC_LITTLE_ENDIAN, &ax_seq);
proto_tree_add_item(ax4000_tree, hf_ax4000_crc, tvb, 14, 2, ENC_LITTLE_ENDIAN);
col_append_fstr(pinfo->cinfo, COL_INFO,
"Chss:%u Prt:%u Idx:%u Seq:0x%08x TS:%.6f[msec]",
ax_chassis, ax_port, ax_index, ax_seq, ax_timestamp*1e-5);
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
/* this format is require because a script is used to build the C function
that calls all the protocol registration.
*/
void
proto_register_ax4000(void)
{
static hf_register_info hf[] = {
{ &hf_ax4000_port,
{ "Port Number", "ax4000.port",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ax4000_chassis,
{ "Chassis Number", "ax4000.chassis",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ax4000_fill,
{ "Fill Type", "ax4000.fill",
FT_UINT8, BASE_DEC, NULL, 0xc0,
NULL, HFILL }
},
{ &hf_ax4000_index,
{ "Index", "ax4000.index",
FT_UINT16, BASE_DEC, NULL, 0x0FFF,
NULL, HFILL }
},
{ &hf_ax4000_timestamp,
{ "Timestamp", "ax4000.timestamp",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ax4000_seq,
{ "Sequence Number", "ax4000.seq",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ax4000_crc,
{ "CRC (unchecked)", "ax4000.crc",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
}
};
/* Setup protocol subtree array */
static int *ett[] = {
&ett_ax4000
};
/* Register the protocol name and description */
proto_ax4000 = proto_register_protocol("AX/4000 Test Block",
"AX4000", "ax4000");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_ax4000, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
ax4000_handle = register_dissector("ax4000", dissect_ax4000, proto_ax4000);
}
#define AX4000_TCP_PORT 3357 /* assigned by IANA */
#define AX4000_UDP_PORT 3357 /* assigned by IANA */
void
proto_reg_handoff_ax4000(void)
{
dissector_add_uint("ip.proto", IP_PROTO_AX4000, ax4000_handle);
dissector_add_uint_with_preference("tcp.port", AX4000_TCP_PORT, ax4000_handle);
dissector_add_uint_with_preference("udp.port", AX4000_UDP_PORT, ax4000_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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