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Add support for DOCSIS TLV 5.76 'Low Latency Support'

This commit is contained in:
Hadar Shoham 2022-08-05 12:56:57 +00:00 committed by Jaap Keuter
parent e43c6b1aa2
commit b87e7aea49
2 changed files with 20 additions and 1 deletions
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20
epan/dissectors/packet-docsis-tlv.c
View File

@ -223,6 +223,7 @@ static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_65 = -1;
static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_85 = -1;
static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_117 = -1;
static int hf_docsis_tlv_mcap_dipl_up_upper_band_edge_204 = -1;
static int hf_docsis_tlv_mcap_low_latency_sup = -1;
static int hf_docsis_tlv_clsfr_ref = -1;
static int hf_docsis_tlv_clsfr_id = -1;
@ -3019,7 +3020,7 @@ dissect_modemcap (tvbuff_t * tvb, packet_info* pinfo, proto_tree * tree, int sta
expert_add_info_format(pinfo, mcap_item, &ei_docsis_tlv_tlvlen_bad, "Wrong TLV length: %u", length);
}
break;
case CAP_DIPL_DOWN_UPPER_BAND_EDGE:
case CAP_DIPL_DOWN_UPPER_BAND_EDGE:
if (length == 1)
{
static int * const dipl_down_upper_band_edge[] = {
@ -3057,6 +3058,17 @@ dissect_modemcap (tvbuff_t * tvb, packet_info* pinfo, proto_tree * tree, int sta
expert_add_info_format(pinfo, mcap_item, &ei_docsis_tlv_tlvlen_bad, "Wrong TLV length: %u", length);
}
break;
case CAP_LOW_LATENCY_SUP:
if (length == 1)
{
proto_tree_add_item (mcap_tree, hf_docsis_tlv_mcap_low_latency_sup, tvb,
pos, length, ENC_BIG_ENDIAN);
}
else
{
expert_add_info_format(pinfo, mcap_item, &ei_docsis_tlv_tlvlen_bad, "Wrong TLV length: %u", length);
}
break;
default:
dissect_unknown_tlv (tvb, pinfo, mcap_tree, pos - 2, length + 2);
break;
@ -6280,6 +6292,12 @@ proto_register_docsis_tlv (void)
FT_BOOLEAN, 8, NULL, 0x10,
NULL, HFILL}
},
{&hf_docsis_tlv_mcap_low_latency_sup,
{".62 Low Latency Support",
"docsis_tlv.mcap.low_latancy_sup",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Low Latency Support", HFILL}
},
{&hf_docsis_tlv_cm_mic,
{"6 CM MIC", "docsis_tlv.cmmic",
FT_BYTES, BASE_NONE, NULL, 0x0,

1
epan/dissectors/packet-docsis-tlv.h
View File

@ -163,6 +163,7 @@
#define CAP_DIPL_DOWN_LOWER_BAND_EDGE 60
#define CAP_DIPL_DOWN_UPPER_BAND_EDGE 61
#define CAP_DIPL_UP_UPPER_BAND_EDGE 62
#define CAP_LOW_LATENCY_SUP 76
/* Define Classifier subtypes
* These are subtypes of either: