/* code to dissect NORM cmd(cc) packets */
static guint dissect_norm_cmd_cc(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset, guint8 hlen)
{
proto_tree_add_item(tree, hf_reserved, tvb, offset, 1, ENC_NA); offset += 1;
proto_tree_add_item(tree, hf_cc_sequence, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2;
proto_tree_add_item(tree, hf_cc_sts, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4;
proto_tree_add_item(tree, hf_cc_stus, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4;
if (offset < hdrlen2bytes(hlen)) {
offset = dissect_norm_hdrext(tree, pinfo, tvb, offset, hlen);
}
while (offset < hdrlen2bytes(hlen)) {
proto_item *ti, *tif;
proto_tree *cc_tree, *flag_tree;
double grtt;
ti = proto_tree_add_text(tree, tvb, offset, 8, "Congestion Control");
cc_tree = proto_item_add_subtree(ti, ett_congestioncontrol);
proto_tree_add_item(cc_tree, hf_cc_node_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4;
tif = proto_tree_add_item(cc_tree, hf_cc_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
flag_tree = proto_item_add_subtree(tif, ett_flags);
proto_tree_add_item(flag_tree, hf_cc_flags_clr, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_cc_flags_plr, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_cc_flags_rtt, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_cc_flags_start, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(flag_tree, hf_cc_flags_leave, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
grtt = UnquantizeRtt(tvb_get_guint8(tvb, offset));
proto_tree_add_double(cc_tree, hf_cc_rtt, tvb, offset, 1, grtt); offset += 1;
grtt = rmt_decode_send_rate(tvb_get_ntohs(tvb, offset));
proto_tree_add_double(cc_tree, hf_cc_rate, tvb, offset, 2, grtt); offset += 2;
}
return offset;
}
/* code to dissect NORM info packets */
static void dissect_norm_info(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, guint offset, guint8 hlen)
{
proto_item *ti;
proto_tree *flag_tree;
norm_packet_data_t *norm_data;
offset = dissect_grrtetc(tree, tvb, offset);
ti = proto_tree_add_item(tree, hf_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
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;
/* Save encoding ID */
norm_data = wmem_new0(wmem_file_scope(), norm_packet_data_t);
norm_data->encoding_id = tvb_get_guint8(tvb, offset);
p_add_proto_data(wmem_file_scope(), pinfo, proto_rmt_norm, 0, norm_data);
proto_tree_add_item(tree, hf_fec_encoding_id, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1;
proto_tree_add_item(tree, hf_object_transport_id, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2;
if (offset < hdrlen2bytes(hlen)) {
offset = dissect_norm_hdrext(tree, pinfo, tvb, offset, hlen);
}
if (tvb_reported_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_payload, tvb, offset, -1, ENC_NA);
}
/* 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(flush) packets */
static guint dissect_norm_cmd_repairadv(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset, guint8 hlen)
{
proto_tree_add_item(tree, hf_flags, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1;
proto_tree_add_item(tree, hf_reserved, tvb, offset, 2, ENC_BIG_ENDIAN); offset +=2;
if (offset < hdrlen2bytes(hlen)) {
offset = dissect_norm_hdrext(tree, pinfo, tvb, offset, hlen);
}
while (tvb_reported_length_remaining(tvb, offset) > 0) {
offset = dissect_nack_data(tree, tvb, offset, pinfo);
}
return offset;
}
static guint dissect_norm_hdrext(proto_tree *tree, packet_info *pinfo,
tvbuff_t *tvb, guint offset, guint8 hlen)
{
lct_data_exchange_t data_exchange;
norm_packet_data_t *packet_data = (norm_packet_data_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_rmt_norm, 0);
memset(&data_exchange, 0, sizeof(data_exchange));
if (packet_data != NULL)
data_exchange.codepoint = packet_data->encoding_id;
offset += lct_ext_decode(tree, tvb, pinfo, offset, hdrlen2bytes(hlen), &data_exchange,
hf_extension, ett_hdrext);
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);
}
return offset;
}
static guint dissect_norm_hdrext(struct _norm *norm, struct _fec_ptr *f, proto_tree *tree,
tvbuff_t *tvb, guint offset, packet_info *pinfo _U_)
{
guint i;
proto_item *ti;
/* Allocate an array of _ext elements */
GArray *ext;
guint offset_old = offset;
proto_tree *ext_tree;
ext = g_array_new(FALSE, TRUE, sizeof(struct _ext));
rmt_ext_parse(ext, tvb, &offset, hdrlen2bytes(norm->hlen));
if (ext->len > 0)
{
struct _lct_prefs lctp;
memset(&lctp, 0, sizeof(lctp));
if (tree)
{
/* Add the extensions subtree */
ti = proto_tree_add_uint(tree, hf.extension,
tvb, offset_old,
offset - offset_old, ext->len);
ext_tree = proto_item_add_subtree(ti, ett.hdrext);
} else
ext_tree = NULL;
