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wireshark/epan/dissectors/packet-rmt-lct.c

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/* packet-rmt-lct.c
* Reliable Multicast Transport (RMT)
* LCT Building Block dissector
* Copyright 2005, Stefano Pettini <spettini@users.sourceforge.net>
*
* Layered Coding Transport (LCT):
* -------------------------------
*
* Provides transport level support for reliable content delivery
* and stream delivery protocols. LCT is specifically designed to
* support protocols using IP multicast, but also provides support
* to protocols that use unicast. LCT is compatible with congestion
* control that provides multiple rate delivery to receivers and
* is also compatible with coding techniques that provide
* reliable delivery of content.
*
* References:
* RFC 3451, Layered Coding Transport (LCT) Building Block
*
* 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 <math.h>
#include <epan/packet.h>
#include "packet-rmt-common.h"
#define LCT_SCT_FLAG 0x0008
#define LCT_ERT_FLAG 0x0004
#define LCT_CLOSE_SESSION_FLAG 0x0002
#define LCT_CLOSE_OBJECT_FLAG 0x0001
void proto_register_rmt_lct(void);
static int proto_rmt_lct = -1;
static int hf_version = -1;
static int hf_fsize_header = -1;
static int hf_fsize_cci = -1;
static int hf_fsize_tsi = -1;
static int hf_fsize_toi = -1;
static int hf_flags_header = -1;
static int hf_flags_sct_present = -1;
static int hf_flags_ert_present = -1;
static int hf_flags_close_session = -1;
static int hf_flags_close_object = -1;
static int hf_hlen = -1;
static int hf_codepoint = -1;
static int hf_cci = -1;
static int hf_tsi16 = -1;
static int hf_tsi32 = -1;
static int hf_tsi48 = -1;
static int hf_toi16 = -1;
static int hf_toi32 = -1;
static int hf_toi48 = -1;
static int hf_toi64 = -1;
static int hf_toi_extended = -1;
static int hf_sct = -1;
static int hf_ert = -1;
static int hf_ext = -1;
static int hf_hec_type = -1;
static int hf_hec_len = -1;
static int hf_hec_data = -1;
static int hf_send_rate = -1;
static int hf_cenc = -1;
static int hf_flute_version = -1;
static int hf_fdt_instance_id = -1;
/* Generated from convert_proto_tree_add_text.pl */
static int hf_cc_rate = -1;
static int hf_cc_rtt = -1;
static int hf_cc_flags = -1;
static int hf_cc_loss = -1;
static int hf_cc_sequence = -1;
static int ett_main = -1;
static int ett_fsize = -1;
static int ett_flags = -1;
static int ett_ext = -1;
static int ett_ext_ext = -1;
/* Enumerated data types for LCT preferences */
const enum_val_t enum_lct_ext_192[] =
{
{ "none", "Don't decode", LCT_PREFS_EXT_192_NONE },
{ "flute", "Decode as FLUTE extension (EXT_FDT)", LCT_PREFS_EXT_192_FLUTE },
{ NULL, NULL, 0 }
};
const enum_val_t enum_lct_ext_193[] =
{
{ "none", "Don't decode", LCT_PREFS_EXT_193_NONE },
{ "flute", "Decode as FLUTE extension (EXT_CENC)", LCT_PREFS_EXT_193_FLUTE },
{ NULL, NULL, 0 }
};
static const value_string hec_type_vals[] = {
{ 0, "EXT_NOP, No-Operation" },
{ 1, "EXT_AUTH, Packet authentication" },
{ 2, "EXT_CC, Congestion Control Feedback" },
{ 64, "EXT_FTI, FEC Object Transmission Information" },
{ 128, "EXT_RATE, Send Rate" },
{ 192, "EXT_FDT, FDT Instance Header" },
{ 193, "EXT_CENC, FDT Instance Content Encoding" },
{ 0, NULL }
};
/* LCT helper functions */
/* ==================== */
static void lct_timestamp_parse(guint32 t, nstime_t* s)
{
s->secs = t / 1000;
s->nsecs = (t % 1000) * 1000000;
}
double rmt_decode_send_rate(guint16 send_rate )
{
double value;
value = (send_rate >> 4) * 10.0 / 4096.0 * pow(10.0, (send_rate & 0xf));
return value;
}
int lct_ext_decode(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, guint offset, guint offset_max, lct_data_exchange_t *data_exchange,
int hfext, int ettext)
{
guint8 het;
guint i, count = 0;
guint length,
tmp_offset = offset,
start_offset = offset;
proto_item *ti;
proto_tree *hec_tree, *ext_tree;
double cc_loss;
/* Figure out the extention count */
while (tmp_offset < offset_max)
{
het = tvb_get_guint8(tvb, tmp_offset);
if (het <= 127)
{
length = tvb_get_guint8(tvb, tmp_offset+1)*4;
}
else
{
length = 4;
}
/* Prevents infinite loops */
if (length == 0)
break;
tmp_offset += length;
count++;
}
if (count == 0)
return 0;
ti = proto_tree_add_uint(tree, hfext, tvb, offset, tmp_offset - offset, count);
hec_tree = proto_item_add_subtree(ti, ettext);
for (i = 0; i < count; i++)
{
het = tvb_get_guint8(tvb, offset);
if (het <= 127)
{
length = tvb_get_guint8(tvb, offset+1)*4;
}
else
{
length = 4;
}
ti = proto_tree_add_item(hec_tree, hf_hec_type, tvb, offset, 1, ENC_BIG_ENDIAN);
ext_tree = proto_item_add_subtree(ti, ett_ext_ext);
proto_item_set_len(ti, length);
if (het <= 127)
{
proto_tree_add_item(ext_tree, hf_hec_len, tvb, offset+1, 1, ENC_BIG_ENDIAN);
}
switch (het)
{
case 0: /* EXT_NOP */
case 1: /* EXT_AUTH */
default:
proto_tree_add_item(ext_tree, hf_hec_data, tvb, offset+2, length-2, ENC_NA);
break;
case 3: /* EXT_CC RATE */
proto_tree_add_item(ext_tree, hf_cc_sequence, tvb, offset+2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(ext_tree, hf_cc_flags, tvb, offset+4, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(ext_tree, hf_cc_rtt, tvb, offset+5, 1, ENC_BIG_ENDIAN);
cc_loss = tvb_get_ntohs(tvb, offset+6)/65535.0;
proto_tree_add_double(ext_tree, hf_cc_loss, tvb, offset+6, 2, cc_loss);
proto_tree_add_item(ext_tree, hf_cc_rate, tvb, offset+8, 2, ENC_BIG_ENDIAN);
break;
case 64: /* EXT_FTI */
fec_decode_ext_fti(tvb, pinfo, ext_tree, offset,
(data_exchange == NULL) ? 0 : data_exchange->codepoint);
break;
case 128: /* EXT_RATE */
proto_tree_add_double(ext_tree, hf_send_rate, tvb, offset+2, 2,
rmt_decode_send_rate(tvb_get_ntohs(tvb, offset+2)));
break;
case 192: /* EXT_FDT */
if ((data_exchange != NULL) && (data_exchange->ext_192 == LCT_PREFS_EXT_192_FLUTE))
{
proto_tree_add_item(ext_tree, hf_flute_version, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(ext_tree, hf_fdt_instance_id, tvb, offset, 4, ENC_BIG_ENDIAN);
data_exchange->is_flute = TRUE;
}
break;
case 193: /* EXT_CENC */
if ((data_exchange != NULL) && (data_exchange->ext_193 == LCT_PREFS_EXT_193_FLUTE))
{
proto_tree_add_item(ext_tree, hf_cenc, tvb, offset+3, 1, ENC_BIG_ENDIAN);
}
break;
}
offset += length;
}
return offset-start_offset;
}
/* LCT exported functions */
/* ====================== */
/* Dissection */
/* ---------- */
/* Dissect an LCT header:
* l - ptr to the logical LCT packet representation to fill, and related wireshark stuffs
* f - ptr to the FEC infos to fill (EXT_FTI), and related wireshark stuffs
* tvb - buffer
* pinfo - packet info
* tree - tree where to add LCT header subtree
* offset - ptr to offset to use and update
*/
/*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| V | C | r |S| O |H|T|R|A|B| HDR_LEN | Codepoint (CP)|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Congestion Control Information (CCI, length = 32*(C+1) bits) |
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Transport Session Identifier (TSI, length = 32*S+16*H bits) |
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Transport Object Identifier (TOI, length = 32*O+16*H bits) |
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Sender Current Time (SCT, if T = 1) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Expected Residual Time (ERT, if R = 1) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Header Extensions (if applicable) |
| ... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 1 - Default LCT header format
*/
static int
dissect_lct(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
int offset = 0;
guint16 buffer16;
guint8 cci_size;
guint8 tsi_size;
guint8 toi_size;
guint64 tsi;
guint64 toi = 0;
guint16 hlen;
nstime_t tmp_time;
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *lct_tree = tree, *lct_fsize_tree, *lct_flags_tree;
lct_data_exchange_t *data_exchange = (lct_data_exchange_t *)data;
/* LCT fixed-size fields dissection */
/* -------------------------------- */
buffer16 = tvb_get_ntohs(tvb, offset);
cci_size = ((buffer16 & 0x0C00) >> 10) * 4 + 4;
tsi_size = ((buffer16 & 0x0080) >> 7) * 4 + ((buffer16 & 0x0010) >> 4) * 2;
toi_size = ((buffer16 & 0x0060) >> 5) * 4 + ((buffer16 & 0x0010) >> 4) * 2;
hlen = tvb_get_guint8(tvb, offset+2) * 4;
if (data_exchange != NULL)
{
data_exchange->codepoint = tvb_get_guint8(tvb, offset+3);
data_exchange->is_flute = FALSE;
}
if (tree)
{
/* Create the LCT subtree */
ti = proto_tree_add_item(tree, proto_rmt_lct, tvb, offset, hlen, ENC_NA);
lct_tree = proto_item_add_subtree(ti, ett_main);
/* Fill the LCT subtree */
/* LCT version number (4 bits) */
proto_tree_add_item(lct_tree, hf_version, tvb, offset, 2, ENC_BIG_ENDIAN);
ti = proto_tree_add_item(lct_tree, hf_fsize_header, tvb, offset, 2, ENC_BIG_ENDIAN);
lct_fsize_tree = proto_item_add_subtree(ti, ett_fsize);
/* Fill the LCT fsize subtree */
proto_tree_add_uint(lct_fsize_tree, hf_fsize_cci, tvb, offset, 2, cci_size);
proto_tree_add_uint(lct_fsize_tree, hf_fsize_tsi, tvb, offset, 2, tsi_size);
proto_tree_add_uint(lct_fsize_tree, hf_fsize_toi, tvb, offset, 2, toi_size);
ti = proto_tree_add_item(lct_tree, hf_flags_header, tvb, offset, 2, ENC_BIG_ENDIAN);
lct_flags_tree = proto_item_add_subtree(ti, ett_flags);
/* Fill the LCT flags subtree */
proto_tree_add_item(lct_flags_tree, hf_flags_sct_present, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_flags_tree, hf_flags_ert_present, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_flags_tree, hf_flags_close_session, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_flags_tree, hf_flags_close_object, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_uint(lct_tree, hf_hlen, tvb, offset+2, 1, hlen);
proto_tree_add_item(lct_tree, hf_codepoint, tvb, offset+3, 1, ENC_BIG_ENDIAN);
}
offset += 4;
/* LCT variable-size and optional fields dissection */
/* ------------------------------------------------ */
/* Congestion Control Information (CCI) */
if (cci_size > 0) {
proto_tree_add_item(lct_tree, hf_cci, tvb, offset, cci_size, ENC_NA);
offset += cci_size;
}
/* Transmission Session Identifier (TSI) */
if (tsi_size > 0) {
switch (tsi_size)
{
case 2:
proto_tree_add_item(lct_tree, hf_tsi16, tvb, offset, tsi_size, ENC_BIG_ENDIAN);
tsi = tvb_get_ntohs(tvb, offset);
break;
case 4:
proto_tree_add_item(lct_tree, hf_tsi32, tvb, offset, tsi_size, ENC_BIG_ENDIAN);
tsi = tvb_get_ntohl(tvb, offset);
break;
case 6:
proto_tree_add_item(lct_tree, hf_tsi48, tvb, offset, tsi_size, ENC_BIG_ENDIAN);
tsi = tvb_get_ntoh48(tvb, offset);
break;
default:
tsi = 0;
break;
}
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "TSI: %" PRIu64, tsi);
offset += tsi_size;
}
/* Transmission Object Identifier (TOI) */
if (toi_size > 0) {
switch (toi_size)
{
case 2:
proto_tree_add_item(lct_tree, hf_toi16, tvb, offset, toi_size, ENC_BIG_ENDIAN);
toi = tvb_get_ntohs(tvb, offset);
break;
case 4:
proto_tree_add_item(lct_tree, hf_toi32, tvb, offset, toi_size, ENC_BIG_ENDIAN);
toi = tvb_get_ntohl(tvb, offset);
break;
case 6:
proto_tree_add_item(lct_tree, hf_toi48, tvb, offset, toi_size, ENC_BIG_ENDIAN);
toi = tvb_get_ntoh48(tvb, offset);
break;
case 8:
proto_tree_add_item(lct_tree, hf_toi64, tvb, offset, toi_size, ENC_BIG_ENDIAN);
toi = tvb_get_ntoh64(tvb, offset);
break;
case 10:
proto_tree_add_item(lct_tree, hf_toi64, tvb, offset+2, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_tree, hf_toi_extended, tvb, offset, 2, ENC_BIG_ENDIAN);
break;
case 12:
proto_tree_add_item(lct_tree, hf_toi64, tvb, offset+4, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_tree, hf_toi_extended, tvb, offset, 4, ENC_BIG_ENDIAN);
break;
case 14:
proto_tree_add_item(lct_tree, hf_toi64, tvb, offset+6, 8, ENC_BIG_ENDIAN);
proto_tree_add_item(lct_tree, hf_toi_extended, tvb, offset, 6, ENC_BIG_ENDIAN);
break;
default:
break;
}
if (toi_size <= 8)
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "TOI: %" PRIu64, toi);
else
col_append_sep_fstr(pinfo->cinfo, COL_INFO, " ", "TOI: 0x%s", tvb_bytes_to_str(pinfo->pool, tvb, offset, toi_size));
offset += toi_size;
}
if (buffer16 & LCT_CLOSE_SESSION_FLAG)
col_append_sep_str(pinfo->cinfo, COL_INFO, " ", "Close session");
if (buffer16 & LCT_CLOSE_OBJECT_FLAG)
col_append_sep_str(pinfo->cinfo, COL_INFO, " ", "Close object");
/* Sender Current Time (SCT) */
if (buffer16 & LCT_SCT_FLAG) {
lct_timestamp_parse(tvb_get_ntohl(tvb, offset), &tmp_time);
proto_tree_add_time(lct_tree, hf_sct, tvb, offset, 4, &tmp_time);
offset += 4;
}
/* Expected Residual Time (ERT) */
if (buffer16 & LCT_ERT_FLAG) {
lct_timestamp_parse(tvb_get_ntohl(tvb, offset), &tmp_time);
proto_tree_add_time(lct_tree, hf_ert, tvb, offset, 4, &tmp_time);
offset += 4;
}
/* LCT header extensions, if applicable */
/* ------------------------------------ */
lct_ext_decode(lct_tree, tvb, pinfo, offset, hlen, data_exchange, hf_ext, ett_ext);
return hlen;
}
void
proto_register_rmt_lct(void)
{
static hf_register_info hf[] = {
{ &hf_version,
{ "Version", "rmt-lct.version",
FT_UINT16, BASE_DEC, NULL, 0xF000,
NULL, HFILL }
},
{ &hf_fsize_header,
{ "Field size flags", "rmt-lct.fsize",
FT_UINT16, BASE_HEX, NULL, 0x0FD0,
NULL, HFILL }
},
{ &hf_fsize_cci,
{ "Congestion Control Information field size", "rmt-lct.fsize.cci",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_fsize_tsi,
{ "Transport Session Identifier field size", "rmt-lct.fsize.tsi",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_fsize_toi,
{ "Transport Object Identifier field size", "rmt-lct.fsize.toi",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_flags_header,
{ "Flags", "rmt-lct.flags",
FT_UINT16, BASE_HEX, NULL, 0x001F,
NULL, HFILL }
},
{ &hf_flags_sct_present,
{ "Sender Current Time present flag", "rmt-lct.flags.sct_present",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), LCT_SCT_FLAG,
NULL, HFILL }
},
{ &hf_flags_ert_present,
{ "Expected Residual Time present flag", "rmt-lct.flags.ert_present",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), LCT_ERT_FLAG,
NULL, HFILL }
},
{ &hf_flags_close_session,
{ "Close Session flag", "rmt-lct.flags.close_session",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), LCT_CLOSE_SESSION_FLAG,
NULL, HFILL }
},
{ &hf_flags_close_object,
{ "Close Object flag", "rmt-lct.flags.close_object",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), LCT_CLOSE_OBJECT_FLAG,
NULL, HFILL }
},
{ &hf_hlen,
{ "Header length", "rmt-lct.hlen",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_codepoint,
{ "Codepoint", "rmt-lct.codepoint",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cci,
{ "Congestion Control Information", "rmt-lct.cci",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_tsi16,
{ "Transport Session Identifier", "rmt-lct.tsi",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_tsi32,
{ "Transport Session Identifier", "rmt-lct.tsi",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_tsi48,
{ "Transport Session Identifier", "rmt-lct.tsi64",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_toi16,
{ "Transport Object Identifier", "rmt-lct.toi",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_toi32,
{ "Transport Object Identifier", "rmt-lct.toi",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_toi48,
{ "Transport Object Identifier", "rmt-lct.toi64",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_toi64,
{ "Transport Object Identifier (up to 64 bits)", "rmt-lct.toi64",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_toi_extended,
{ "Transport Object Identifier (bits 64-112)", "rmt-lct.toi_extended",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_sct,
{ "Sender Current Time", "rmt-lct.sct",
FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ert,
{ "Expected Residual Time", "rmt-lct.ert",
FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ext,
{ "Extension count", "rmt-lct.ext",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_hec_type,
{ "Header Extension Type (HET)", "rmt-lct.hec.type",
FT_UINT8, BASE_DEC, VALS(hec_type_vals), 0x0,
NULL, HFILL }
},
{ &hf_hec_len,
{ "Header Extension Length (HEL)", "rmt-lct.hec.len",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_hec_data,
{ "Header Extension Data", "rmt-lct.hec.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_send_rate,
{ "Send Rate", "rmt-lct.send_rate",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cenc,
{ "Content Encoding Algorithm (CENC)", "rmt-lct.cenc",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_flute_version,
{ "FLUTE version (V)", "rmt-lct.flute_version",
FT_UINT32, BASE_DEC, NULL, 0x00F00000,
NULL, HFILL }
},
{ &hf_fdt_instance_id,
{ "FDT Instance ID", "rmt-lct.fdt_instance_id",
FT_UINT32, BASE_DEC, NULL, 0x000FFFFF,
NULL, HFILL }
},
{ &hf_cc_sequence,
{ "CC Sequence", "rmt-lct.cc_sequence",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cc_flags,
{ "CC Flags", "rmt-lct.cc_flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cc_rtt,
{ "CC RTT", "rmt-lct.cc_rtt",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cc_loss,
{ "CC Loss", "rmt-lct.cc_loss",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_cc_rate,
{ "CC Rate", "rmt-lct.cc_rate",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_main,
&ett_fsize,
&ett_flags,
&ett_ext,
&ett_ext_ext
};
/* Register the protocol name and description */
proto_rmt_lct = proto_register_protocol("Layered Coding Transport", "RMT-LCT", "rmt-lct");
register_dissector("rmt-lct", dissect_lct, proto_rmt_lct);
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_rmt_lct, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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