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ORAN: Skip BF Weights if don't do comp method

This commit is contained in:
Martin Mathieson 2020-12-13 11:05:11 +00:00 committed by Martin Mathieson
parent 270561ade1
commit 9d2481c9f5
1 changed files with 17 additions and 4 deletions
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21
epan/dissectors/packet-oran.c
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@ -128,6 +128,7 @@ static gint ett_oran_bfw = -1;
/* Expert info */
static expert_field ei_oran_invalid_bfw_iqwidth = EI_INIT;
static expert_field ei_oran_invalid_num_bfw_weights = EI_INIT;
static expert_field ei_oran_unsupported_bfw_compression_method = EI_INIT;
static guint sample_bit_width_uplink = 14;
@ -531,7 +532,8 @@ static int dissect_oran_c_section(tvbuff_t *tvb, proto_tree *tree, packet_info *
guint32 bfwcomphdr_iq_width, bfwcomphdr_comp_meth;
proto_item *iqwidth_ti = proto_tree_add_item_ret_uint(extension_tree, hf_oran_bfwCompHdr_iqWidth,
tvb, offset, 1, ENC_BIG_ENDIAN, &bfwcomphdr_iq_width);
proto_tree_add_item_ret_uint(extension_tree, hf_oran_bfwCompHdr_compMeth, tvb, offset, 1, ENC_BIG_ENDIAN, &bfwcomphdr_comp_meth);
proto_item *comp_meth_ti = proto_tree_add_item_ret_uint(extension_tree, hf_oran_bfwCompHdr_compMeth,
tvb, offset, 1, ENC_BIG_ENDIAN, &bfwcomphdr_comp_meth);
offset++;
/* Look up width of samples. */
@ -569,19 +571,29 @@ static int dissect_oran_c_section(tvbuff_t *tvb, proto_tree *tree, packet_info *
/* bfwCompParam */
gboolean compression_method_supported = FALSE;
switch (bfwcomphdr_comp_meth) {
case 0: /* no compression */
/* absent */
compression_method_supported = TRUE;
break;
case 1: /* block fl. point */
case 2: /* block scaling */
case 3: /* u-law */
case 4: /* beamspace */
default:
/* TODO: not handled */
/* Not handled */
break;
}
/* Can't go on if compression scheme not supported */
if (!compression_method_supported) {
expert_add_info_format(pinfo, comp_meth_ti, &ei_oran_unsupported_bfw_compression_method,
"BFW Compression method %u (%s) not supported",
bfwcomphdr_comp_meth,
val_to_str_const(bfwcomphdr_comp_meth, bfw_comp_headers_comp_meth, "Unknown"));
break;
}
/* We know:
- iq_width (above)
- numBfWeights (taken from preference)
@ -1683,7 +1695,8 @@ proto_register_oran(void)
static ei_register_info ei[] = {
{ &ei_oran_invalid_bfw_iqwidth, { "oran_fh_cus.bfw_iqwidth_invalid", PI_MALFORMED, PI_ERROR, "Invalid IQ Width", EXPFILL }},
{ &ei_oran_invalid_num_bfw_weights, { "oran_fh_cus.num_bf_weights_invalid", PI_MALFORMED, PI_ERROR, "Invalid number of BF Weights", EXPFILL }}
{ &ei_oran_invalid_num_bfw_weights, { "oran_fh_cus.num_bf_weights_invalid", PI_MALFORMED, PI_ERROR, "Invalid number of BF Weights", EXPFILL }},
{ &ei_oran_unsupported_bfw_compression_method, { "oran_fh_cus.unsupported_bfw_compression_method", PI_UNDECODED, PI_WARN, "Unsupported BFW Compression Method", EXPFILL }}
};
/* Register the protocol name and description */