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/* packet-pw-common.c
* Common functions and objects for PWE3 dissectors.
* Copyright 2009, Artem Tamazov <artem.tamazov@tellabs.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>
#include <wsutil/str_util.h>
#include "packet-pw-common.h"
void proto_register_pw_padding(void);
static const char string_ok[] = "Ok";
const value_string
pwc_vals_cw_l_bit[] = {
{ 0x0, string_ok },
{ 0x1, "Attachment Circuit Fault" },
{ 0, NULL }
};
const value_string
pwc_vals_cw_r_bit[] = {
{ 0x0, string_ok },
{ 0x1, "Packet Loss State" },
{ 0, NULL }
};
const value_string
pwc_vals_cw_frag[] = {
{ 0x0, "Unfragmented" },
{ 0x1, "First fragment" },
{ 0x2, "Last fragment" },
{ 0x3, "Intermediate fragment" },
{ 0, NULL }
};
void pwc_item_append_cw(proto_item* item, const uint32_t cw, const bool append_text)
{
if (item != NULL)
{
if (append_text)
{
proto_item_append_text(item, ", CW");
}
proto_item_append_text(item, ": 0x%.8" PRIx32, cw);
}
return;
}
void pwc_item_append_text_n_items(proto_item* item, const int n, const char * const item_text)
{
if (item != NULL)
{
if (n >=0)
{
proto_item_append_text(item, ", %d %s%s", n, item_text, plurality(n,"","s"));
}
}
return;
}
static int proto_pw_padding;
static int ett_pw_common;
static int hf_padding_len;
static
int dissect_pw_padding(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_)
{
int size;
proto_item* item;
proto_tree* tree_p;
size = tvb_reported_length_remaining(tvb, 0);
item = proto_tree_add_item(tree, proto_pw_padding, tvb, 0, -1, ENC_NA);
pwc_item_append_text_n_items(item,size,"byte");
tree_p = proto_item_add_subtree(item, ett_pw_common);
call_data_dissector(tvb, pinfo, tree_p);
item = proto_tree_add_int(tree_p, hf_padding_len, tvb, 0, 0, size);
proto_item_set_hidden(item); /*allow filtering*/
return tvb_captured_length(tvb);
}
void proto_register_pw_padding(void)
{
static hf_register_info hfpadding[] = {
{&hf_padding_len ,{"Length" ,"pw.padding.len"
,FT_INT32 ,BASE_DEC ,NULL ,0
,NULL ,HFILL }}
};
static int *ett_array[] = {
&ett_pw_common
};
proto_pw_padding = proto_register_protocol("Pseudowire Padding","PW Padding","pw.padding");
proto_register_field_array(proto_pw_padding, hfpadding, array_length(hfpadding));
proto_register_subtree_array(ett_array, array_length(ett_array));
register_dissector("pw_padding", dissect_pw_padding, proto_pw_padding);
}
/*
* 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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