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/* packet-sscf-nni.c
* Routines for SSCF-NNI (Q.2140) frame disassembly
* Jeff Morriss <jeff.morriss.ws [AT] gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998
*
* Copied from packet-sscop.c
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_sscf(void);
void proto_reg_handoff_sscf(void);
static int proto_sscf = -1;
static gint ett_sscf = -1;
static dissector_handle_t mtp3_handle;
#define SSCF_PDU_LENGTH 4
#define SSCF_STATUS_OFFSET 3
#define SSCF_STATUS_LENGTH 1
#define SSCF_SPARE_OFFSET 0
#define SSCF_SPARE_LENGTH 3
static int hf_status = -1;
static int hf_spare = -1;
#define SSCF_STATUS_OOS 0x01
#define SSCF_STATUS_PO 0x02
#define SSCF_STATUS_IS 0x03
#define SSCF_STATUS_NORMAL 0x04
#define SSCF_STATUS_EMERGENCY 0x05
#define SSCF_STATUS_ALIGNMENT_NOT_SUCCESSFUL 0x7
#define SSCF_STATUS_MANAGEMENT_INITIATED 0x08
#define SSCF_STATUS_PROTOCOL_ERROR 0x09
#define SSCF_STATUS_PROVING_NOT_SUCCESSFUL 0x0a
static const value_string sscf_status_vals[] = {
{ SSCF_STATUS_OOS, "Out of Service" },
{ SSCF_STATUS_PO, "Processor Outage" },
{ SSCF_STATUS_IS, "In Service" },
{ SSCF_STATUS_NORMAL, "Normal" },
{ SSCF_STATUS_EMERGENCY, "Emergency" },
{ SSCF_STATUS_ALIGNMENT_NOT_SUCCESSFUL, "Alignment Not Successful" },
{ SSCF_STATUS_MANAGEMENT_INITIATED, "Management Initiated" },
{ SSCF_STATUS_PROTOCOL_ERROR, "Protocol Error" },
{ SSCF_STATUS_PROVING_NOT_SUCCESSFUL, "Proving Not Successful" },
{ 0, NULL }
};
static int
dissect_sscf_nni(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
guint reported_length;
proto_item *sscf_item = NULL;
proto_tree *sscf_tree = NULL;
guint8 sscf_status;
reported_length = tvb_reported_length(tvb); /* frame length */
if (tree) {
sscf_item = proto_tree_add_item(tree, proto_sscf, tvb, 0, -1, ENC_NA);
sscf_tree = proto_item_add_subtree(sscf_item, ett_sscf);
}
if (reported_length > SSCF_PDU_LENGTH)
{
call_dissector(mtp3_handle, tvb, pinfo, tree);
} else {
sscf_status = tvb_get_guint8(tvb, SSCF_STATUS_OFFSET);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSCF-NNI");
col_add_fstr(pinfo->cinfo, COL_INFO, "STATUS (%s) ",
val_to_str_const(sscf_status, sscf_status_vals, "Unknown"));
proto_tree_add_item(sscf_tree, hf_status, tvb, SSCF_STATUS_OFFSET,
SSCF_STATUS_LENGTH, ENC_BIG_ENDIAN);
proto_tree_add_item(sscf_tree, hf_spare, tvb, SSCF_SPARE_OFFSET,
SSCF_SPARE_LENGTH, ENC_BIG_ENDIAN);
}
return tvb_captured_length(tvb);
}
void
proto_register_sscf(void)
{
static hf_register_info hf[] =
{ { &hf_status, { "Status", "sscf-nni.status", FT_UINT8, BASE_HEX,
VALS(sscf_status_vals), 0x0, NULL, HFILL} },
{ &hf_spare, { "Spare", "sscf-nni.spare", FT_UINT24, BASE_HEX,
NULL, 0x0, NULL, HFILL} }
};
static gint *ett[] = {
&ett_sscf,
};
proto_sscf = proto_register_protocol("SSCF-NNI", "SSCF-NNI", "sscf-nni");
proto_register_field_array(proto_sscf, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("sscf-nni", dissect_sscf_nni, proto_sscf);
}
void
proto_reg_handoff_sscf(void)
{
mtp3_handle = find_dissector_add_dependency("mtp3", proto_sscf);
}
/*
* 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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