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/* packet-openthread.c
* Simple dissector for OpenThread loopback interface
*
* Robert Cragie <robert.cragie@arm.com>
*
* 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>
/* Forward declarations */
void proto_register_openthread(void);
void proto_reg_handoff_openthread(void);
static int proto_openthread = -1;
static dissector_handle_t openthread_handle;
static dissector_handle_t wpan_handle;
static int hf_openthread_channel = -1;
/* static int hf_openthread_psdu = -1; */
static gint ett_openthread = -1;
static int
dissect_openthread(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *proto_root;
proto_tree *openthread_tree;
tvbuff_t *sub_tvb;
/* Create the protocol tree. */
proto_root = proto_tree_add_item(tree, proto_openthread, tvb, 0, -1, ENC_NA);
openthread_tree = proto_item_add_subtree(proto_root, ett_openthread);
proto_tree_add_item(openthread_tree, hf_openthread_channel, tvb, 0, 1, ENC_NA);
sub_tvb = tvb_new_subset_length(tvb, 1, tvb_reported_length_remaining(tvb, 3)); /* Note - truncate the last two "phoney" CRC bytes */
call_dissector(wpan_handle, sub_tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
void
proto_register_openthread(void)
{
static hf_register_info hf[] = {
/* Generic TLV */
{ &hf_openthread_channel,
{ "Channel",
"openthread.channel",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL,
HFILL }
},
#if 0
{ &hf_openthread_psdu,
{ "PSDU",
"openthread.psdu",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL,
HFILL }
}
#endif
};
static gint *ett[] = {
&ett_openthread
};
proto_openthread = proto_register_protocol("OpenThread", "OpenThread", "openthread");
proto_register_field_array(proto_openthread, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
openthread_handle = register_dissector("openthread", dissect_openthread, proto_openthread);
}
void
proto_reg_handoff_openthread(void)
{
wpan_handle = find_dissector_add_dependency("wpan_nofcs", proto_openthread);
dissector_add_for_decode_as("udp.port", openthread_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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