/*
* get a Blefuscuoan unsigned 64 bit integer from a tvb
*/
WSLUA_METHOD TvbRange_uint64(lua_State* L) {
/* Get a Big Endian (network order) unsigned 64 bit integer from a `TvbRange`, as a `UInt64` object.
The range must be 1-8 octets long. */
TvbRange tvbr = checkTvbRange(L,1);
if (!(tvbr && tvbr->tvb)) return 0;
if (tvbr->tvb->expired) {
luaL_error(L,"expired tvb");
return 0;
}
switch (tvbr->len) {
case 1:
pushUInt64(L,tvb_get_guint8(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 2:
pushUInt64(L,tvb_get_ntohs(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 3:
pushUInt64(L,tvb_get_ntoh24(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 4:
pushUInt64(L,tvb_get_ntohl(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 5:
pushUInt64(L,tvb_get_ntoh40(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 6:
pushUInt64(L,tvb_get_ntoh48(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 7:
pushUInt64(L,tvb_get_ntoh56(tvbr->tvb->ws_tvb,tvbr->offset));
return 1;
case 8:
pushUInt64(L,tvb_get_ntoh64(tvbr->tvb->ws_tvb,tvbr->offset));
WSLUA_RETURN(1); /* The `UInt64` object. */
default:
luaL_error(L,"TvbRange:uint64() does not handle %d byte integers",tvbr->len);
return 0;
}
}
/* Sub-vectors */
static int
sv_text(tvbuff_t *tvb, int svoff, packet_info *pinfo, proto_tree *tree)
{
guint sv_length, sv_id;
guint16 beacon_type, ring;
guint32 error_report_timer_value;
proto_tree *sv_tree, *sv_subtree;
proto_item *sv_item, *len_item, *ti;
guchar errors[6]; /* isolating or non-isolating */
sv_tree = proto_tree_add_subtree(tree, tvb, svoff+0, 1, ett_tr_sv, &sv_item, "Subvector");
sv_length = tvb_get_guint8(tvb, svoff+0);
len_item = proto_tree_add_item(sv_tree, hf_trmac_sv_len, tvb, svoff+0, 1, ENC_BIG_ENDIAN);
/* Check the SV length; it must be at least 2, to include
the subvector length and indicator. */
if (sv_length < 2) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Invalid subvector: length < 2");
return 0; /* tells our caller to give up */
}
sv_id = tvb_get_guint8(tvb, svoff+1);
proto_tree_add_item(sv_tree, hf_trmac_sv_id, tvb, svoff+1, 1, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item, " (%s)", val_to_str_ext(sv_id, &subvector_vs_ext, "Unknown subvector ID 0x%02X"));
switch(sv_id) {
case 0x01: /* Beacon Type */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
beacon_type = tvb_get_ntohs(tvb, svoff+2);
proto_tree_add_item(sv_tree, hf_trmac_beacon_type, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %s", val_to_str(beacon_type, beacon_vs, "Illegal value: %d"));
break;
case 0x02: /* Upstream Neighbor's Address */
if (sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 8");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_naun, tvb, svoff+2, sv_length-2, ENC_NA);
proto_item_append_text(sv_item, ": %s",
tvb_ether_to_str(tvb, svoff+2));
break;
case 0x03: /* Local Ring Number */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
ring = tvb_get_ntohs(tvb, svoff+2);
proto_tree_add_item(sv_tree, hf_trmac_local_ring_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": 0x%04X (%d)", ring, ring);
break;
case 0x04: /* Assign Physical Drop Number */
if (sv_length != 6) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 6");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_assign_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
break;
case 0x05: /* Error Report Timer Value */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
error_report_timer_value = 10 * tvb_get_ntohs(tvb, svoff+2);
proto_tree_add_uint_format_value(sv_tree, hf_trmac_error_report_timer_value, tvb, svoff+2, sv_length-2,
error_report_timer_value, "%u ms", error_report_timer_value );
proto_item_append_text(sv_item,
": %u ms", error_report_timer_value );
break;
case 0x06: /* Authorized Function Classes */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_authorized_function_classes, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %04X", tvb_get_ntohs(tvb, svoff+2) );
break;
case 0x07: /* Authorized Access Priority */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_authorized_access_priority, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %04X", tvb_get_ntohs(tvb, svoff+2) );
break;
case 0x09: /* Correlator */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_correlator, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %04X", tvb_get_ntohs(tvb, svoff+2) );
break;
case 0x0A: /* SA of Last AMP or SMP Frame */
if (sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 8");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_sa_of_last_amp_or_smp_frame, tvb, svoff+2, sv_length-2, ENC_NA);
proto_item_append_text(sv_item,
": %s",
tvb_ether_to_str(tvb, svoff+2));
break;
case 0x0B: /* Physical Drop Number */
if (sv_length != 6) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 6");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_physical_drop_number, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": 0x%08X", tvb_get_ntohl(tvb, svoff+2) );
break;
case 0x20: /* Response Code */
if (sv_length != 4 && sv_length != 6) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4 and != 6");
break;
}
if (sv_length == 4) {
proto_tree_add_uint_format_value(sv_tree, hf_trmac_response_code32, tvb, svoff+2, sv_length-2,
tvb_get_ntohl(tvb, svoff+2), "0x%04X 0x%02X 0x%02x",
tvb_get_ntohs(tvb, svoff+2), tvb_get_guint8(tvb, svoff+4), tvb_get_guint8(tvb, svoff+5));
proto_item_append_text(sv_item,
": 0x%04X 0x%02X 0x%02x",
tvb_get_ntohs(tvb, svoff+2),
tvb_get_guint8(tvb, svoff+4),
tvb_get_guint8(tvb, svoff+5));
} else {
proto_tree_add_uint64_format_value(sv_tree, hf_trmac_response_code48, tvb, svoff+2, sv_length-2,
tvb_get_ntoh48(tvb, svoff+2), "0x%04X 0x%02X 0x%06X",
tvb_get_ntohs(tvb, svoff+2),
tvb_get_guint8(tvb, svoff+4),
tvb_get_ntoh24(tvb, svoff+5));
proto_item_append_text(sv_item,
": 0x%04X 0x%02X 0x%06X",
tvb_get_ntohs(tvb, svoff+2),
tvb_get_guint8(tvb, svoff+4),
tvb_get_ntoh24(tvb, svoff+5));
}
break;
case 0x21: /* Individual Address Count */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_individual_address_count, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %u", tvb_get_ntohs(tvb, svoff+2) );
break;
case 0x22: /* Product Instance ID */
proto_tree_add_item(sv_tree, hf_trmac_product_instance_id, tvb, svoff+2, sv_length-2, ENC_NA);
break;
case 0x23: /* Ring Station Version Number */
proto_tree_add_item(sv_tree, hf_trmac_ring_station_version_number, tvb, svoff+2, sv_length-2, ENC_NA);
break;
case 0x26: /* Wrap data */
proto_tree_add_item(sv_tree, hf_trmac_wrap_data, tvb, svoff+2, sv_length-2, ENC_NA);
break;
case 0x27: /* Frame Forward */
proto_tree_add_item(sv_tree, hf_trmac_frame_forward, tvb, svoff+2, sv_length-2, ENC_NA);
break;
case 0x28: /* Station Identifier */
if (sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 8");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_station_identifier, tvb, svoff+2, sv_length-2, ENC_NA);
proto_item_append_text(sv_item,
": %s",
tvb_ether_to_str(tvb, svoff+2));
break;
case 0x29: /* Ring Station Status */
proto_tree_add_item(sv_tree, hf_trmac_ring_station_status, tvb, svoff+2, sv_length-2, ENC_NA);
break;
case 0x2A: /* Transmit Status Code */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_transmit_status_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %04X", tvb_get_ntohs(tvb, svoff+2) );
break;
case 0x2B: /* Group Address */
if (sv_length != 6 && sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 6 and != 8");
break;
}
if (sv_length == 6) {
proto_tree_add_item(sv_tree, hf_trmac_group_address32, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %08X", tvb_get_ntohl(tvb, svoff+2) );
} else {
proto_tree_add_item(sv_tree, hf_trmac_group_address_ether, tvb, svoff+2, sv_length-2, ENC_NA);
proto_item_append_text(sv_item,
": %s",
tvb_ether_to_str(tvb, svoff+2));
}
break;
case 0x2C: /* Functional Addresses */
if (sv_length != 6) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 6");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_functional_addresses, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %08X", tvb_get_ntohl(tvb, svoff+2) );
break;
case 0x2D: /* Isolating Error Counts */
if (sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 8");
break;
}
tvb_memcpy(tvb, errors, svoff+2, 6);
ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_iso, tvb, svoff+2, sv_length-2,
errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
sv_subtree = proto_item_add_subtree(ti, ett_tr_ierr_cnt);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_line, tvb, svoff+2, 1, errors[0]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_internal, tvb, svoff+3, 1, errors[1]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_burst, tvb, svoff+4, 1, errors[2]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_ac, tvb, svoff+5, 1, errors[3]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_abort, tvb, svoff+6, 1, errors[4]);
break;
case 0x2E: /* Non-Isolating Error Counts */
if (sv_length != 8) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 8");
break;
}
tvb_memcpy(tvb, errors, svoff+2, 6);
ti = proto_tree_add_uint(sv_tree, hf_trmac_errors_noniso, tvb, svoff+2, sv_length-2,
errors[0] + errors[1] + errors[2] + errors[3] + errors[4]);
sv_subtree = proto_item_add_subtree(ti, ett_tr_nerr_cnt);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_lost, tvb, svoff+2, 1, errors[0]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_congestion, tvb, svoff+3, 1, errors[1]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_fc, tvb, svoff+4, 1, errors[2]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_freq, tvb, svoff+5, 1, errors[3]);
proto_tree_add_uint(sv_subtree, hf_trmac_errors_token, tvb, svoff+6, 1, errors[4]);
break;
case 0x30: /* Error Code */
if (sv_length != 4) {
expert_add_info_format(pinfo, len_item, &ei_trmac_sv_len,
"Subvector length is != 4");
break;
}
proto_tree_add_item(sv_tree, hf_trmac_error_code, tvb, svoff+2, sv_length-2, ENC_BIG_ENDIAN);
proto_item_append_text(sv_item,
": %04X", tvb_get_ntohs(tvb, svoff+2) );
break;
default: /* Unknown */
proto_tree_add_item(sv_tree, hf_trmac_unknown_subvector, tvb, svoff+2, sv_length-2, ENC_NA);
break;
}
return sv_length;
}
/* Decode an EXT_FTI extension and fill FEC array */
void fec_decode_ext_fti(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, guint8 encoding_id)
{
guint64 transfer_length;
fec_packet_data_t *fec_data;
guint8 instance_id = 0;
proto_item *ti;
if (encoding_id == 6){
/* Raptor Q uses 40-bit transfer length */
transfer_length = tvb_get_ntoh40(tvb, offset+2);
}
else {
/* Decode 48-bit length field */
transfer_length = tvb_get_ntoh48(tvb, offset+2);
}
if (encoding_id >= 128)
{
instance_id = (guint8) tvb_get_ntohs(tvb, offset+8);
/* Decode FEC Instance ID */
fec_data = wmem_new0(wmem_file_scope(), fec_packet_data_t);
fec_data->instance_id = instance_id;
p_add_proto_data(wmem_file_scope(), pinfo, proto_rmt_fec, 0, fec_data);
}
if (encoding_id == 6){
/* Raptor Q uses 40-bit transfer length */
proto_tree_add_uint64(tree, hf_fti_transfer_length, tvb, offset+2, 5, transfer_length);
}
else {
proto_tree_add_uint64(tree, hf_fti_transfer_length, tvb, offset+2, 6, transfer_length);
ti = proto_tree_add_item(tree, hf_instance_id, tvb, offset+8, 2, ENC_BIG_ENDIAN);
if ((encoding_id < 128) && (encoding_id != 0)) {
expert_add_info(pinfo, ti, &ei_fec_encoding_id);
}
}
switch (encoding_id)
{
case 1:
proto_tree_add_item(tree, hf_fti_encoding_symbol_length, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_num_blocks, tvb, offset+12, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_num_subblocks, tvb, offset+14, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_alignment, tvb, offset+15, 1, ENC_BIG_ENDIAN);
break;
case 6:
proto_tree_add_item(tree, hf_fti_encoding_symbol_length, tvb, offset+8, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_num_blocks, tvb, offset+10, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_num_subblocks, tvb, offset+11, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_alignment, tvb, offset+13, 1, ENC_BIG_ENDIAN);
break;
case 0:
case 2:
case 128:
case 130:
proto_tree_add_item(tree, hf_fti_encoding_symbol_length, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_max_source_block_length, tvb, offset+12, 4, ENC_BIG_ENDIAN);
break;
case 129:
proto_tree_add_item(tree, hf_fti_encoding_symbol_length, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_max_source_block_length, tvb, offset+12, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_max_number_encoding_symbols, tvb, offset+14, 2, ENC_BIG_ENDIAN);
break;
case 132:
proto_tree_add_item(tree, hf_fti_encoding_symbol_length, tvb, offset+10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_max_source_block_length, tvb, offset+12, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_fti_max_number_encoding_symbols, tvb, offset+16, 4, ENC_BIG_ENDIAN);
break;
}
}