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/* packet-mesh-header.c
* Routines for Mesh Header dissection
* Javier Cardona <javier@cozybit.com>
* Copyright 2007, Marvell Semiconductors Inc.
*
* 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>
void proto_register_mesh(void);
/* Initialize the protocol and registered fields */
static int proto_mesh = -1;
static int hf_mesh_ttl = -1;
static int hf_mesh_e2eseq = -1;
/* Initialize the subtree pointers */
static gint ett_mesh = -1;
/* Code to actually dissect the packets */
static int
dissect_mesh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *mesh_tree;
guint8 mesh_ttl;
guint16 mesh_e2eseq;
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Mesh");
if (tree) {
ti = proto_tree_add_item(tree, proto_mesh, tvb, 0, 5, ENC_NA);
mesh_tree = proto_item_add_subtree(ti, ett_mesh);
/* add an item to the subtree, see section 1.6 for more information */
mesh_ttl = tvb_get_guint8(tvb, 2);
proto_tree_add_uint(mesh_tree, hf_mesh_ttl, tvb, 2, 1, mesh_ttl);
mesh_e2eseq = tvb_get_ntohs(tvb, 3);
proto_tree_add_uint(mesh_tree, hf_mesh_e2eseq, tvb, 3, 2, mesh_e2eseq);
}
/* Return the amount of data this dissector was able to dissect */
return 5;
}
/* 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_mesh(void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{ &hf_mesh_ttl,
{ "Mesh TTL", "mesh.ttl", FT_UINT8, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_mesh_e2eseq,
{ "Mesh End-to-end Seq", "mesh.e2eseq", FT_UINT16, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_mesh
};
/* Register the protocol name and description */
proto_mesh = proto_register_protocol("Mesh Header", "Mesh", "mesh");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_mesh, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("mesh", dissect_mesh, proto_mesh);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local Variables:
* c-basic-offset: 2
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=2 tabstop=8 expandtab:
* :indentSize=2:tabSize=8:noTabs=true:
*/
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