static guint dissect_nack_data(proto_tree *tree, tvbuff_t *tvb, guint offset,
packet_info *pinfo)
{
proto_item *ti, *tif;
proto_tree *nack_tree, *flag_tree;
guint16 len;
ti = proto_tree_add_text(tree, tvb, offset, -1, "NACK Data");
nack_tree = proto_item_add_subtree(ti, ett_nackdata);
proto_tree_add_item(nack_tree, hf_nack_form, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1;
tif = proto_tree_add_item(nack_tree, hf_nack_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
flag_tree = proto_item_add_subtree(tif, ett_flags);
proto_tree_add_item(flag_tree, hf_nack_flags_segment, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_nack_flags_block, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_nack_flags_info, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_nack_flags_object, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
len = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(nack_tree, hf_nack_length, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2;
proto_item_set_len(ti, 4+len);
if (len > 4) {
dissect_feccode(nack_tree, tvb, offset, pinfo, 1);
}
offset += len;
return offset;
}
/* code to dissect NORM cmd(flush) packets */
static guint dissect_norm_cmd_flush(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset, guint8 hlen)
{
offset = dissect_feccode(tree, tvb, offset, pinfo, 0);
if (offset < hdrlen2bytes(hlen)) {
offset = dissect_norm_hdrext(tree, pinfo, tvb, offset, hlen);
}
return offset;
}
/* code to dissect NORM cmd(squelch) packets */
static guint dissect_norm_cmd_squelch(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset)
{
offset = dissect_feccode(tree, tvb, offset, pinfo, 0);
while (tvb_reported_length_remaining(tvb, offset) > 0) {
proto_tree_add_item(tree, hf_cc_transport_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 2;
}
return offset;
}
/* code to dissect NORM data packets */
static void dissect_norm_data(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset, guint8 hlen)
{
guint8 flags;
proto_item *ti;
proto_tree *flag_tree;
offset = dissect_grrtetc(tree, tvb, offset);
ti = proto_tree_add_item(tree, hf_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
flags = tvb_get_guint8(tvb, offset);
flag_tree = proto_item_add_subtree(ti, ett_flags);
proto_tree_add_item(flag_tree, hf_flag_repair, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_norm_explicit, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_info, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_unreliable, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_file, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_stream, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_flag_msgstart, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
offset = dissect_feccode(tree, tvb, offset, pinfo, 0);
if (offset < hdrlen2bytes(hlen)) {
offset = dissect_norm_hdrext(tree, pinfo, tvb, offset, hlen);
}
if (flags & NORM_FLAG_STREAM) {
flag_tree = proto_tree_add_subtree(tree, tvb, offset, 8, ett_streampayload, NULL, "Stream Data");
proto_tree_add_item(flag_tree, hf_reserved, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(flag_tree, hf_payload_len, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(flag_tree, hf_payload_offset, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (tvb_reported_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_payload, tvb, offset, -1, ENC_NA);
}