| /* GTP Templates in TTCN-3 |
| * (C) 2018 Harald Welte <laforge@gnumonks.org> |
| * contributions by sysmocom - s.f.m.c. GmbH |
| * All rights reserved. |
| * |
| * Released under the terms of GNU General Public License, Version 2 or |
| * (at your option) any later version. |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| module GTP_Templates { |
| |
| import from General_Types all; |
| import from Osmocom_Types all; |
| import from GTPC_Types all; |
| import from GTPU_Types all; |
| import from GTP_CodecPort all; |
| import from IPCP_Types all; |
| import from Osmocom_Gb_Types all; // BssgpCellId |
| |
| /* Table 38 of 3GPP TS 29.060 */ |
| type enumerated GTP_Cause { |
| GTP_CAUSE_REQUEST_IMEI (1), |
| GTP_CAUSE_REQUEST_IMSI_AND_IMEI (2), |
| GTP_CAUSE_NO_IDENTITY_NEDED (3), |
| GTP_CAUSE_MS_REFUSES (4), |
| GTP_CAUSE_MS_IS_NOT_GPRS_RESPONDING (5), |
| /* reserved */ |
| GTP_CAUSE_REQUEST_ACCEPTED (128) |
| /* FIXME */ |
| }; |
| |
| private function f_oct_or_wc(template integer inp, integer len) return template octetstring { |
| if (istemplatekind(inp, "omit")) { |
| return omit; |
| } else if (istemplatekind(inp, "*")) { |
| return *; |
| } else if (istemplatekind(inp, "?")) { |
| return ?; |
| } |
| return int2oct(valueof(inp), len); |
| } |
| |
| private function f_hex_or_wc(template integer inp, integer len) return template hexstring { |
| if (istemplatekind(inp, "omit")) { |
| return omit; |
| } else if (istemplatekind(inp, "*")) { |
| return *; |
| } else if (istemplatekind(inp, "?")) { |
| return ?; |
| } |
| return int2hex(valueof(inp), len); |
| } |
| |
| /* generalized GTP-C receive template */ |
| template PDU_GTPC tr_GTP1C_PDU(template OCT1 msg_type, template OCT4 teid, template GTPC_PDUs pdu := ?) := { |
| /* N-PDU Number flag (PN) shall be set to '0'. A GTP-C receiver shall not return an |
| * error if this flag is set to '1'. */ |
| pn_bit := '0'B, |
| /* Sequence number flag (S) shall be set to '1'. */ |
| s_bit := '1'B, |
| e_bit := ?, |
| spare := ?, |
| /* Protocol Type flag (PT) shall be set to '1'.*/ |
| pt := '1'B, |
| /* Version shall be set to decimal 1 ('001'). */ |
| version := '001'B, |
| messageType := msg_type, |
| lengthf := ?, |
| teid := teid, |
| opt_part := *, |
| gtpc_pdu := pdu |
| } |
| |
| /* generalized GTP-C send template */ |
| template PDU_GTPC ts_GTP1C_PDU(OCT1 msg_type, OCT4 teid, GTPC_PDUs pdu, uint16_t seq_nr) := { |
| /* N-PDU Number flag (PN) shall be set to '0'. A GTP-C receiver shall not return an |
| * error if this flag is set to '1'. */ |
| pn_bit := '0'B, |
| /* Sequence number flag (S) shall be set to '1'. */ |
| s_bit := '1'B, |
| e_bit := '0'B, |
| spare := '0'B, |
| /* Protocol Type flag (PT) shall be set to '1'.*/ |
| pt := '1'B, |
| /* Version shall be set to decimal 1 ('001'). */ |
| version := '001'B, |
| messageType := msg_type, |
| lengthf := 0, /* we assume encoder overwrites this */ |
| teid := teid, |
| opt_part := { |
| sequenceNumber := int2oct(seq_nr, 2), |
| npduNumber := '00'O, |
| nextExtHeader := '00'O, |
| gTPC_extensionHeader_List := omit |
| }, |
| gtpc_pdu := pdu |
| } |
| |
| /* recovery IE */ |
| template Recovery_gtpc ts_Recovery(OCT1 restart_counter) := { |
| type_gtpc := '0E'O, |
| restartCounter := restart_counter |
| } |
| |
| template Recovery_gtpc tr_Recovery(template OCT1 restart_counter) := { |
| type_gtpc := '0E'O, |
| restartCounter := restart_counter |
| } |
| |
| /* template matching reception of GTP-C echo-request */ |
| template Gtp1cUnitdata tr_GTPC_MsgType(template GtpPeer peer, template OCT1 msg_type, template OCT4 teid, template GTPC_PDUs pdus := ?) := { |
| peer := peer, |
| gtpc := tr_GTP1C_PDU(msg_type, teid, pdus) |
| } |
| |
| /* template matching reception of GTP-C echo-request */ |
| template Gtp1cUnitdata tr_GTPC_PING(template GtpPeer peer) := tr_GTPC_MsgType(peer, echoRequest, '00000000'O); |
| |
| template GTPC_PDUs tr_EchoRespPDU(template OCT1 restart_counter) := { |
| echoResponse := { |
| recovery := tr_Recovery(restart_counter), |
| private_extension_gtpc := * |
| } |
| } |
| |
| /* template matching reception of GTP-C echo-response */ |
| template Gtp1cUnitdata tr_GTPC_PONG(template GtpPeer peer) := tr_GTPC_MsgType(peer, echoResponse, '00000000'O, tr_EchoRespPDU(?)); |
| |
| template GTPC_PDUs ts_EchoRespPDU(OCT1 restart_counter) := { |
| echoResponse := { |
| recovery := ts_Recovery(restart_counter), |
| private_extension_gtpc := omit |
| } |
| } |
| |
| /* master template for senidng a GTP-C echo response */ |
| template Gtp1cUnitdata ts_GTPC_PONG(GtpPeer peer, uint16_t seq, OCT1 rest_ctr) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(echoResponse, '00000000'O, valueof(ts_EchoRespPDU(rest_ctr)), seq) |
| } |
| |
| template GTPC_PDUs ts_EchoReqPDU := { |
| echoRequest := { |
| private_extension_gtpc := omit |
| } |
| } |
| |
| /* master template for sending a GTP-C echo request */ |
| template Gtp1cUnitdata ts_GTPC_PING(GtpPeer peer, uint16_t seq) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(echoRequest, '00000000'O, valueof(ts_EchoReqPDU), seq) |
| } |
| |
| template EndUserAddress t_EuaIPv4(template OCT4 ip_addr) := { |
| type_gtpc := '80'O, |
| endUserAddress := { |
| endUserAddressIPv4 := { |
| lengthf := 2, |
| pdp_typeorg := '0001'B, |
| spare := '1111'B, |
| pdp_typenum := '21'O, |
| ipv4_address := ip_addr |
| } |
| } |
| } |
| template EndUserAddress t_EuaIPv4Dyn := t_EuaIPv4(omit); |
| template EndUserAddress tr_EuaIPv4(template OCT4 ip_addr) modifies t_EuaIPv4 := { |
| endUserAddress := { |
| endUserAddressIPv4 := { |
| lengthf := 2+lengthof(ip_addr) |
| } |
| } |
| } |
| |
| template EndUserAddress t_EuaIPv6(template OCT16 ip_addr) := { |
| type_gtpc := '80'O, |
| endUserAddress := { |
| endUserAddressIPv6 := { |
| lengthf := 2, |
| pdp_typeorg := '0001'B, |
| spare := '1111'B, |
| pdp_typenum := '57'O, |
| ipv6_address := ip_addr |
| } |
| } |
| } |
| template EndUserAddress t_EuaIPv6Dyn := t_EuaIPv6(omit); |
| template EndUserAddress tr_EuaIPv6(template OCT16 ip_addr) modifies t_EuaIPv6 := { |
| endUserAddress := { |
| endUserAddressIPv6 := { |
| lengthf := 2+lengthof(ip_addr) |
| } |
| } |
| } |
| |
| /* 3GPP TS 29.060 Figure 37A: End User Address Information Element for IPv4v6 (both static) */ |
| template EndUserAddress t_EuaIPv4v6(template OCT4 ip_addr4, template OCT16 ip_addr6) := { |
| type_gtpc := '80'O, |
| endUserAddress := { |
| endUserAddressIPv4andIPv6 := { |
| lengthf := 2, |
| pdp_typeorg := '0001'B, |
| spare := '1111'B, |
| pdp_typenum := '8D'O, |
| ipv4_address := ip_addr4, |
| ipv6_address := ip_addr6 |
| } |
| } |
| } |
| template EndUserAddress t_EuaIPv4Dynv6Dyn := t_EuaIPv4v6(omit, omit); |
| template EndUserAddress tr_EuaIPv4v6(template OCT4 ip_addr4, template OCT16 ip_addr6) modifies t_EuaIPv4v6 := { |
| endUserAddress := { |
| endUserAddressIPv4andIPv6 := { |
| lengthf := 2+lengthof(ip_addr4)+lengthof(ip_addr6) |
| } |
| } |
| } |
| |
| template AccessPointName ts_APN(octetstring apn) := { |
| type_gtpc := '83'O, |
| lengthf := lengthof(apn), |
| apn_value := apn |
| } |
| |
| template GSN_Address_GTPC ts_GsnAddr(octetstring ip_addr) := { |
| type_gtpc := '85'O, |
| lengthf := lengthof(ip_addr), |
| addressf := ip_addr |
| } |
| |
| template MSISDN ts_Msisdn(octetstring msisdn) := { |
| type_gtpc := '86'O, |
| lengthf := lengthof(msisdn), |
| msisdn := msisdn |
| } |
| |
| template QualityOfServiceProfile ts_QosDefault := { |
| type_gtpc := '87'O, |
| lengthf := 4, |
| allocRetensionPrio := '00'O, |
| qos_ProfileValue := { |
| reliabilityClass := '011'B, |
| delayClass := '001'B, |
| spare1 := '00'B, |
| precedenceClass := '010'B, |
| spare2 := '0'B, |
| peakThroughput := '1001'B, |
| meanThroughput := '11111'B, |
| spare3 := '000'B, |
| deliverErroneusSDU := omit, |
| deliveryOrder := omit, |
| trafficClass := omit, |
| maxSDUSize := omit, |
| maxBitrateUplink := omit, |
| maxBitrateDownlink := omit, |
| sduErrorRatio := omit, |
| residualBER := omit, |
| trafficHandlingPriority := omit, |
| transferDelay := omit, |
| guaranteedBitRateUplink := omit, |
| guaranteedBitRateDownlink := omit, |
| sourceStatisticsDescriptor := omit, |
| signallingIndication := omit, |
| spare4 := omit, |
| maxBitrateDownlinkExt := omit, |
| guaranteedBitRateDownlinkExt := omit, |
| maxBitrateUplinkExt := omit, |
| guaranteedBitRateUplinkExt := omit |
| } |
| } |
| |
| template IMSI_gtpc ts_Imsi(hexstring digits) := { |
| type_gtpc := '02'O, |
| digits := digits, |
| padding := 'F'H |
| } |
| |
| template GTPC_PDUs ts_CreatePdpPDU(hexstring imsi, OCT1 restart_ctr, OCT4 teid_data, OCT4 teid_ctrl, |
| BIT4 nsapi, EndUserAddress eua, octetstring apn, |
| octetstring sgsn_ip_sign, octetstring sgsn_ip_data, |
| octetstring msisdn, template ProtConfigOptions pco := omit) := { |
| createPDPContextRequest := { |
| imsi := ts_Imsi(imsi), |
| rai := omit, |
| recovery := ts_Recovery(restart_ctr), |
| selectionMode := { |
| type_gtpc := '0F'O, |
| selectModeValue := '00'B, |
| spare := '111111'B |
| }, |
| teidDataI := { |
| type_gtpc := '00'O, |
| teidDataI := teid_data |
| }, |
| teidControlPlane := { |
| type_gtpc := '00'O, |
| teidControlPlane := teid_ctrl |
| }, |
| nsapi := { |
| type_gtpc := '00'O, |
| nsapi := nsapi, |
| unused := '0000'B |
| }, |
| linked_nsapi := omit, |
| charging_char := omit, |
| trace_ref := omit, |
| trace_type := omit, |
| endUserAddress := eua, |
| accessPointName := ts_APN(apn), |
| protConfigOptions := pco, |
| sgsn_addr_signalling := ts_GsnAddr(sgsn_ip_sign), |
| sgsn_addr_traffic := ts_GsnAddr(sgsn_ip_data), |
| msisdn := ts_Msisdn(msisdn), |
| qualityOfServiceProfile := ts_QosDefault, |
| tft := omit, |
| triggerId := omit, |
| omcId := omit, |
| commonFlags := omit, |
| aPN_Restriction := omit, |
| ratType := omit, |
| userLocationInformation := omit, |
| mS_TimeZone := omit, |
| imeisv := omit, |
| camelChargingInformationContainer := omit, |
| additionalTraceInfo := omit, |
| correlationID := omit, |
| evolvedAllocationRetentionPriorityI := omit, |
| extendedCommonFlags := omit, |
| userCSGInformation := omit, |
| aPN_AMBR := omit, |
| signallingPriorityIndication := omit, |
| cN_OperatorSelectionEntity := omit, |
| private_extension_gtpc := omit |
| } |
| } |
| |
| template Gtp1cUnitdata ts_GTPC_CreatePDP(GtpPeer peer, uint16_t seq, hexstring imsi, |
| OCT1 restart_ctr, OCT4 teid_data, |
| OCT4 teid_ctrl, BIT4 nsapi, EndUserAddress eua, |
| octetstring apn, octetstring sgsn_ip_sign, |
| octetstring sgsn_ip_data, octetstring msisdn, |
| template ProtConfigOptions pco := omit) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(createPDPContextRequest, '00000000'O, |
| valueof(ts_CreatePdpPDU(imsi, restart_ctr, teid_data, teid_ctrl, |
| nsapi, eua, apn, sgsn_ip_sign, |
| sgsn_ip_data, msisdn, pco)), seq) |
| } |
| |
| |
| template NSAPI_GTPC ts_NSAPI(BIT4 nsapi) := { |
| type_gtpc := '14'O, |
| nsapi := nsapi, |
| unused := '0000'B |
| } |
| |
| template ReorderingRequired ts_ReorderReq(boolean req := false) := { |
| type_gtpc := '08'O, |
| reordreq := bool2bit(req), |
| spare := '0000000'B |
| } |
| |
| template GTPC_PDUs ts_CreatePdpRespPDU(OCT1 cause, OCT4 teid_data, OCT4 teid_ctrl, BIT4 nsapi, |
| octetstring ggsn_ip_sign, octetstring ggsn_ip_data, |
| OCT4 chg_id, template EndUserAddress eua := omit, |
| template Recovery_gtpc recovery := omit, |
| template ProtConfigOptions pco := omit) := { |
| createPDPContextResponse := { |
| cause := { '00'O, cause }, |
| reorderingRequired := ts_ReorderReq(false), |
| recovery := recovery, |
| teidDataI := { |
| type_gtpc := '00'O, |
| teidDataI := teid_data |
| }, |
| teidControlPlane := { |
| type_gtpc := '00'O, |
| teidControlPlane := teid_ctrl |
| }, |
| nsapi := ts_NSAPI(nsapi), |
| chargingID := { |
| type_gtpc := '7F'O, |
| chargingID := chg_id |
| }, |
| endUserAddress := eua, |
| protConfigOptions := pco, |
| ggsn_addr_controlPlane := ts_GsnAddr(ggsn_ip_sign), |
| ggsn_addr_traffic := ts_GsnAddr(ggsn_ip_data), |
| alt_ggsn_addr_controlPane := omit, |
| alt_ggsn_addr_traffic := omit, |
| qualityOfServiceProfile := ts_QosDefault, |
| commonFlags := omit, |
| aPN_Restriction := omit, |
| mS_InfoChangeReportingAction := omit, |
| bearerControlMode := omit, |
| evolvedAllocationRetentionPriorityI := omit, |
| extendedCommonFlag := omit, |
| csg_information_reporting_action := omit, |
| aPN_AMBR := omit, |
| gGSN_BackOffTime := omit, |
| private_extension_gtpc := omit |
| } |
| } |
| |
| template Gtp1cUnitdata ts_GTPC_CreatePdpResp(GtpPeer peer, uint16_t seq, OCT4 teid, |
| OCT1 cause, |
| OCT4 teid_ctrl, OCT4 teid_data, |
| BIT4 nsapi, octetstring ggsn_ip_sign, |
| octetstring ggsn_ip_data, OCT4 chg_id, |
| template EndUserAddress eua := omit, |
| template Recovery_gtpc recovery := omit, |
| template ProtConfigOptions pco := omit) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(createPDPContextResponse, teid, |
| valueof(ts_CreatePdpRespPDU(cause, teid_data, teid_ctrl, nsapi, |
| ggsn_ip_sign, ggsn_ip_data, chg_id, |
| eua, recovery, pco)), seq) |
| } |
| |
| /* PCO send base template */ |
| template ProtConfigOptions ts_PCO := { |
| type_gtpc := '84'O, |
| lengthf := 0, |
| configProtocol := '000'B, |
| spare := '0000'B, |
| extension0 := '1'B, |
| protocols := {} |
| } |
| /* PCO receive base template */ |
| template ProtConfigOptions tr_PCO := { |
| type_gtpc := '84'O, |
| lengthf := ?, |
| configProtocol := '000'B, |
| spare := ?, |
| extension0 := '1'B, |
| protocols := {} |
| } |
| |
| template ProtConfigOptions ts_PCO_IPv6_DNS modifies ts_PCO := { |
| protocols := { |
| { protocolID := '0003'O, lengthProtoID := 0, protoIDContents := ''O } |
| } |
| } |
| template ProtConfigOptions tr_PCO_IPv6_DNS_resp(template OCT16 contents) modifies tr_PCO := { |
| protocols := { |
| *, { protocolID := '0003'O, lengthProtoID := 16, protoIDContents := contents }, * |
| } |
| } |
| |
| template ProtConfigOptions ts_PCO_IPv4_DNS_IPCP modifies ts_PCO := { |
| protocols := { |
| /* dummy PAP entry to check if our parser in the GGSN can properly iterate over |
| * the list of protocols, see Change-Id Icc2e6716c33d78d3c3e000f529806228d8aa155e */ |
| { protocolID := 'C023'O, lengthProtoID := 0, protoIDContents := ''O }, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := |
| enc_IpcpPacket(valueof(ts_IPCP_ReqDNS)) } |
| } |
| } |
| |
| template ProtConfigOptions ts_PCO_IPv4_PRI_DNS_IPCP modifies ts_PCO := { |
| protocols := { |
| /* dummy PAP entry to check if our parser can cope with a single primary DNS entry |
| * see Change-Id Icffde89f9bc5d8fcadf6e2dd6c0b4de03440edd5 and OS#3288 */ |
| { protocolID := 'C023'O, lengthProtoID := 0, protoIDContents := ''O }, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := |
| enc_IpcpPacket(valueof(ts_IPCP_ReqDNS_Primary)) } |
| } |
| } |
| template ProtConfigOptions ts_PCO_IPv4_SEC_DNS_IPCP modifies ts_PCO := { |
| protocols := { |
| /* dummy PAP entry to check if our parser can cope with a single secondary DNS entry |
| * see Change-Id Icffde89f9bc5d8fcadf6e2dd6c0b4de03440edd5 and OS#3288 */ |
| { protocolID := 'C023'O, lengthProtoID := 0, protoIDContents := ''O }, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := |
| enc_IpcpPacket(valueof(ts_IPCP_ReqDNS_Secondary)) } |
| } |
| } |
| template ProtConfigOptions ts_PCO_IPv4_SEPARATE_DNS_IPCP modifies ts_PCO := { |
| protocols := { |
| /* dummy PAP entry to check if our parser can cope with a primary and secondary DNS |
| * in separate IPCP containers OS#3381 */ |
| { protocolID := 'C023'O, lengthProtoID := 0, protoIDContents := ''O }, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := |
| enc_IpcpPacket(valueof(ts_IPCP_ReqDNS_Primary)) }, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := |
| enc_IpcpPacket(valueof(ts_IPCP_ReqDNS_Secondary)) } |
| } |
| } |
| |
| template ProtocolElement tr_PCO_Proto(OCT2 prot_id) := { |
| protocolID := prot_id, |
| lengthProtoID := ?, |
| protoIDContents := ? |
| } |
| template ProtocolElement ts_PCOelem_PAP_broken := { |
| protocolID := 'C023'O, |
| lengthProtoID := 60, |
| /* PPP Password Authentication Protocol containing incorrect Peer-Id-Length set to 4 (6-7 should be the valid one), see OS#3914. */ |
| protoIDContents := '0100003c'O & '0444435338323700bc1c08087c1508083e00790000150808fd06000001000000000000000000000000000000000000000000000000000000'O |
| } |
| template ProtConfigOptions ts_PCO_PAP_IPv4_DNS modifies ts_PCO := { |
| protocols := { |
| ts_PCOelem_PAP_broken, |
| { protocolID := '8021'O, lengthProtoID := 16, protoIDContents := enc_IpcpPacket(valueof(ts_IPCP_ReqDNS)) } |
| } |
| } |
| template ProtConfigOptions tr_PCO_Contains(OCT2 prot_id) modifies tr_PCO := { |
| protocols := { *, tr_PCO_Proto(prot_id), * } |
| } |
| |
| template ProtConfigOptions ts_PCO_IPv4_DNS_CONT modifies ts_PCO := { |
| protocols := { |
| { protocolID := '000d'O, lengthProtoID := 0, protoIDContents := ''O } |
| } |
| } |
| template ProtConfigOptions tr_PCO_IPv4_DNS_CONT_resp(template OCT4 contents) modifies tr_PCO := { |
| protocols := { |
| *, { protocolID := '000d'O, lengthProtoID := 4, protoIDContents := contents }, * |
| } |
| } |
| |
| /* extract a given protocol payload from PCO */ |
| function f_PCO_extract_proto(ProtConfigOptions pco, OCT2 protocol, integer nth_match := 1) return octetstring { |
| var integer i; |
| var integer num_matches := 0; |
| for (i := 0; i < lengthof(pco.protocols); i := i + 1) { |
| if (pco.protocols[i].protocolID == protocol) { |
| num_matches := num_matches + 1; |
| if (num_matches == nth_match) { |
| return pco.protocols[i].protoIDContents; |
| } |
| } |
| } |
| setverdict(fail, "Could not extract protocol payload from protocol ", protocol); |
| mtc.stop; |
| return ''O; |
| } |
| |
| template IpcpPacket tr_IPCP(template LcpCode code, template uint8_t identifier, |
| template IpcpOptionList opts) := { |
| code := code, |
| identifier := identifier, |
| len := ?, |
| options := opts |
| } |
| template IpcpOption tr_IPCP_PrimaryDns(template OCT4 addr) := { |
| code := IPCP_OPT_PrimaryDNS, |
| len := 6, |
| data := addr |
| } |
| template IpcpOption tr_IPCP_SecondaryDns(template OCT4 addr) := { |
| code := IPCP_OPT_SecondaryDNS, |
| len := 6, |
| data := addr |
| } |
| template IpcpPacket tr_IPCP_Ack_DNS(template uint8_t identifier := ?, template OCT4 dns1 := ?, |
| template OCT4 dns2 := ?) := |
| tr_IPCP(LCP_Configure_Ack, identifier, |
| { *, tr_IPCP_PrimaryDns(dns1), *, tr_IPCP_SecondaryDns(dns2), * }); |
| |
| template IpcpPacket ts_IPCP(LcpCode code, uint8_t identifier, template IpcpOptionList opts) := { |
| code := code, |
| identifier := identifier, |
| len := 0, /* overwritten */ |
| options := opts |
| } |
| template IpcpPacket ts_IPCP_ReqDNS(uint8_t identifier := 0) := |
| ts_IPCP(LCP_Configure_Request, identifier, |
| { tr_IPCP_PrimaryDns('00000000'O), tr_IPCP_SecondaryDns('00000000'O) }); |
| |
| template IpcpPacket ts_IPCP_ReqDNS_Primary(uint8_t identifier := 0) := |
| ts_IPCP(LCP_Configure_Request, identifier, |
| { tr_IPCP_PrimaryDns('00000000'O) }); |
| template IpcpPacket ts_IPCP_ReqDNS_Secondary(uint8_t identifier := 0) := |
| ts_IPCP(LCP_Configure_Request, identifier, |
| { tr_IPCP_SecondaryDns('00000000'O) }); |
| |
| function f_teardown_ind_IE(in template (omit) BIT1 ind) return template (omit) TearDownInd { |
| if (istemplatekind(ind, "omit")) { |
| return omit; |
| } |
| var TearDownInd ret := { |
| type_gtpc := '13'O, |
| tdInd := valueof(ind), |
| spare:= '0000000'B |
| } |
| return ret; |
| } |
| |
| template GTPC_PDUs ts_DeletePdpPDU(BIT4 nsapi, template (omit) BIT1 teardown_ind) := { |
| deletePDPContextRequest := { |
| cause := omit, |
| tearDownIndicator := f_teardown_ind_IE(teardown_ind), |
| nsapi := { |
| type_gtpc := '14'O, |
| nsapi := nsapi, |
| unused := '0000'B |
| }, |
| protConfigOptions := omit, |
| userLocationInformation := omit, |
| mS_TimeZone := omit, |
| extendedCommonFlags := omit, |
| uLI_Timestamp := omit, |
| private_extension_gtpc := omit |
| } |
| } |
| |
| template Gtp1cUnitdata ts_GTPC_DeletePDP(GtpPeer peer, uint16_t seq, OCT4 teid, |
| BIT4 nsapi, template (omit) BIT1 teardown_ind) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(deletePDPContextRequest, teid, |
| valueof(ts_DeletePdpPDU(nsapi, teardown_ind)), seq) |
| } |
| |
| template GTPC_PDUs ts_DeletePdpRespPDU(OCT1 cause, |
| template ProtConfigOptions pco := omit) := { |
| deletePDPContextResponse := { |
| cause := { '00'O, cause }, |
| protConfigOptions := pco, |
| userLocationInformation := omit, |
| mS_TimeZone := omit, |
| uLI_Timestamp := omit, |
| private_extension_gtpc := omit |
| } |
| } |
| |
| template Gtp1cUnitdata ts_GTPC_DeletePdpResp(GtpPeer peer, uint16_t seq, OCT4 teid, |
| OCT1 cause, |
| template ProtConfigOptions pco := omit) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(deletePDPContextResponse, teid, |
| valueof(ts_DeletePdpRespPDU(cause, pco)), seq) |
| } |
| |
| |
| /* GTP-C RIM */ |
| |
| template (value) RIM_Application_Identity_GTPC ts_GTPC_RIM_Application_Identity(OCT1 app_id) := { |
| iEI := '4B'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 1 |
| }, |
| rIMApplicationIdentity := app_id |
| } |
| /* 3GPP TS 48.018 11.3.62 */ |
| template (value) RIM_Sequence_Number_GTPC ts_GTPC_RIM_Sequence_Number(integer seq) := { |
| iEI := '4C'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 4 |
| }, |
| rIMSequenceNumber := int2oct(seq, 4) |
| } |
| template (value) RIM_PDU_Indications_GTPC ts_GTPC_RIM_PDU_Indications(boolean ack, BIT3 type_ext) := { |
| iEI := '4F'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 1 |
| }, |
| ack := bool2bit(ack), |
| pDU_Type_Extension := type_ext, |
| reserved := '0000'B |
| } |
| /* 3GPP TS 48.018 11.3.67 */ |
| template (value) RIM_Protocol_Version_Number_GTPC ts_GTPC_RIM_Protocol_Version_Number(integer ver) := { |
| iEI := '55'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 1 |
| }, |
| rIMProtocolVersionNumber := int2oct(ver, 1) |
| } |
| function tr_GTPC_Cell_Identifier_V(template BssgpCellId cid) return template Cell_Identifier_V_GTPC { |
| var template Cell_Identifier_V_GTPC ret := { |
| mccDigit1 := ?, |
| mccDigit2 := ?, |
| mccDigit3 := ?, |
| mncDigit3 := ?, |
| mncDigit1 := ?, |
| mncDigit2 := ?, |
| lac := ?, |
| rac := ?, |
| cI_value := ? |
| } |
| if (istemplatekind(cid, "omit")) { |
| return omit; |
| } else if (istemplatekind(cid, "*")) { |
| return *; |
| } else if (istemplatekind(cid, "?")) { |
| return ?; |
| } |
| if (isvalue(cid) and isvalue(cid.ra_id) and isvalue(cid.ra_id.lai)) { |
| if (isvalue(cid.ra_id.lai.mcc_mnc)) { |
| ret.mccDigit1 := cid.ra_id.lai.mcc_mnc[0]; |
| ret.mccDigit2 := cid.ra_id.lai.mcc_mnc[1]; |
| ret.mccDigit3 := cid.ra_id.lai.mcc_mnc[2]; |
| ret.mncDigit3 := cid.ra_id.lai.mcc_mnc[3]; |
| ret.mncDigit1 := cid.ra_id.lai.mcc_mnc[4]; |
| ret.mncDigit2 := cid.ra_id.lai.mcc_mnc[5]; |
| } |
| if (isvalue(cid.ra_id.lai.lac)) { |
| ret.lac := f_oct_or_wc(cid.ra_id.lai.lac, 2); |
| } |
| } |
| if (isvalue(cid) and isvalue(cid.ra_id)) { |
| ret.rac := f_oct_or_wc(cid.ra_id.rac, 1); |
| } |
| if (isvalue(cid)) { |
| ret.cI_value := f_oct_or_wc(cid.cell_id, 2); |
| } |
| return ret; |
| } |
| template (value) Cell_Identifier_V_GTPC ts_GTPC_Cell_Identifier_V(BssgpCellId cid) := { |
| mccDigit1 := cid.ra_id.lai.mcc_mnc[0], |
| mccDigit2 := cid.ra_id.lai.mcc_mnc[1], |
| mccDigit3 := cid.ra_id.lai.mcc_mnc[2], |
| mncDigit3 := cid.ra_id.lai.mcc_mnc[3], |
| mncDigit1 := cid.ra_id.lai.mcc_mnc[4], |
| mncDigit2 := cid.ra_id.lai.mcc_mnc[5], |
| lac := int2oct(cid.ra_id.lai.lac, 2), |
| rac := int2oct(cid.ra_id.rac, 1), |
| cI_value := int2oct(cid.cell_id, 2) |
| } |
| template RIM_Routing_Address_GTPC t_GTPC_RIM_Routing_Address_cid(BssgpCellId cid) := { |
| cell_Identifier := ts_GTPC_Cell_Identifier_V(cid) |
| } |
| function tr_GTPC_ENB_Identifier(template BssgpCellId cid, template integer tac, template octetstring gnbid) return template ENB_Identifier { |
| var template ENB_Identifier ret := { |
| mccDigit1 := ?, |
| mccDigit2 := ?, |
| mccDigit3 := ?, |
| mncDigit3 := ?, |
| mncDigit1 := ?, |
| mncDigit2 := ?, |
| tAC := ?, |
| globalENB_ID := ? |
| } |
| if (istemplatekind(cid, "omit") and istemplatekind(tac, "omit") and istemplatekind(gnbid, "omit")) { |
| return omit; |
| } else if (istemplatekind(cid, "*") and istemplatekind(tac, "*") and istemplatekind(gnbid, "*")) { |
| return *; |
| } else if (istemplatekind(cid, "?") and istemplatekind(tac, "?") and istemplatekind(gnbid, "?")) { |
| return ?; |
| } |
| if (isvalue(cid) and isvalue(cid.ra_id) and isvalue(cid.ra_id.lai)) { |
| if (isvalue(cid.ra_id.lai.mcc_mnc)) { |
| ret.mccDigit1 := cid.ra_id.lai.mcc_mnc[0]; |
| ret.mccDigit2 := cid.ra_id.lai.mcc_mnc[1]; |
| ret.mccDigit3 := cid.ra_id.lai.mcc_mnc[2]; |
| ret.mncDigit3 := cid.ra_id.lai.mcc_mnc[3]; |
| ret.mncDigit1 := cid.ra_id.lai.mcc_mnc[4]; |
| ret.mncDigit2 := cid.ra_id.lai.mcc_mnc[5]; |
| } |
| } |
| if (isvalue(tac)) { |
| ret.tAC := int2oct(valueof(tac), 2); |
| } |
| if (isvalue(gnbid)) { |
| ret.globalENB_ID := gnbid; |
| } |
| |
| return ret; |
| } |
| template (value) ENB_Identifier ts_GTPC_ENB_Identifier(BssgpCellId cid, integer tac, octetstring gnbid) := { |
| mccDigit1 := cid.ra_id.lai.mcc_mnc[0], |
| mccDigit2 := cid.ra_id.lai.mcc_mnc[1], |
| mccDigit3 := cid.ra_id.lai.mcc_mnc[2], |
| mncDigit3 := cid.ra_id.lai.mcc_mnc[3], |
| mncDigit1 := cid.ra_id.lai.mcc_mnc[4], |
| mncDigit2 := cid.ra_id.lai.mcc_mnc[5], |
| tAC := int2oct(tac, 2), |
| globalENB_ID := gnbid |
| } |
| template RIM_Routing_Address_GTPC t_GTPC_RIM_Routing_Address_enbid(BssgpCellId cid, integer tac, octetstring gnbid) := { |
| eNB_Identifier := ts_GTPC_ENB_Identifier(cid, tac, gnbid) |
| } |
| template RIM_Routing_Information_GTPC |
| tr_GTPC_RIM_Routing_Information(HEX1 addr_discr, template RIM_Routing_Address_GTPC addr) := { |
| iEI := '54'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := ? |
| }, |
| rIMRoutingAddressDiscriminator := addr_discr, |
| spare := '0'H, |
| rIM_Routing_Address := addr |
| } |
| template (value) RIM_Routing_Information_GTPC |
| ts_GTPC_RIM_Routing_Information(HEX1 addr_discr, template (value) RIM_Routing_Address_GTPC addr) := { |
| iEI := '54'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 0 /* overwritten */ |
| }, |
| rIMRoutingAddressDiscriminator := addr_discr, |
| spare := '0'H, |
| rIM_Routing_Address := addr |
| } |
| /* 3GPP TS 48.018 11.3.63.1.1 */ |
| template RAN_Information_Request_Application_Container_NACC_GTPC |
| tr_GTPC_RAN_Information_Request_Application_Container_NACC(template BssgpCellId cid) := { |
| iEI := '4D'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := ? |
| }, |
| reporting_Cell_Identifier := tr_GTPC_Cell_Identifier_V(cid) |
| } |
| template (value) RAN_Information_Request_Application_Container_NACC_GTPC |
| ts_GTPC_RAN_Information_Request_Application_Container_NACC(BssgpCellId cid) := { |
| iEI := '4D'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 0 /* overwritten */ |
| }, |
| reporting_Cell_Identifier := ts_GTPC_Cell_Identifier_V(cid) |
| } |
| /* 3GPP TS 48.018 11.3.63.1 */ |
| template RAN_Information_Request_Application_Container_GTPC |
| tru_GTPC_RAN_Information_Request_Application_Container_NACC(template BssgpCellId cid) := { |
| nacc := tr_GTPC_RAN_Information_Request_Application_Container_NACC(cid) |
| } |
| template (value) RAN_Information_Request_Application_Container_GTPC |
| tsu_GTPC_RAN_Information_Request_Application_Container_NACC(BssgpCellId cid) := { |
| nacc := ts_GTPC_RAN_Information_Request_Application_Container_NACC(cid) |
| } |
| /* 3GPP TS 48.018 11.3.63.2.1 */ |
| template RAN_Information_Application_Container_NACC_GTPC |
| tr_GTPC_RAN_Information_Application_Container_NACC(template BssgpCellId cid, boolean psi_type, integer si_psi_num, octetstring si_psi) := { |
| iEI := '4E'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := ? |
| }, |
| reporting_Cell_Identifier := tr_GTPC_Cell_Identifier_V(cid), |
| typeBit := bool2bit(psi_type), |
| number_of_SI_PSI := int2bit(si_psi_num, 7), |
| sI_PSI := si_psi |
| } |
| template (value) RAN_Information_Application_Container_NACC_GTPC |
| ts_GTPC_RAN_Information_Application_Container_NACC(BssgpCellId cid, boolean psi_type, integer si_psi_num, octetstring si_psi) := { |
| iEI := '4E'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 0 /* overwritten */ |
| }, |
| reporting_Cell_Identifier := ts_GTPC_Cell_Identifier_V(cid), |
| typeBit := bool2bit(psi_type), |
| number_of_SI_PSI := int2bit(si_psi_num, 7), |
| sI_PSI := si_psi |
| } |
| |
| /* RAN_Information_Request */ |
| template (value) RAN_Information_Request_RIM_Container_GTPC |
| ts_GTPC_RAN_Information_Request_RIM_Container(template (value) RIM_Application_Identity_GTPC app_id, |
| template (value) RIM_Sequence_Number_GTPC seq, |
| template (value) RIM_PDU_Indications_GTPC ind, |
| template (omit) RIM_Protocol_Version_Number_GTPC ver := omit, |
| template (omit) RAN_Information_Request_Application_Container_GTPC app_cont := omit, |
| template (omit) SON_TransferApplicationIdentity son_app_id := omit) := { |
| iEI := '57'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 0 /* overwritten */ |
| }, |
| rIM_Application_Identity := app_id, |
| rIM_Sequence_Number := seq, |
| rIM_PDU_Indications := ind, |
| rIM_Protocol_Version_Number := ver, |
| application_Container := app_cont, |
| sON_TransferApplicationIdentity := son_app_id |
| } |
| template (value) PDU_BSSGP_RAN_INFORMATION_REQUEST_GTPC |
| ts_GTPC_RAN_Information_Request(template (value) RIM_Routing_Information_GTPC dest, |
| template (value) RIM_Routing_Information_GTPC src, |
| template (value) RAN_Information_Request_RIM_Container_GTPC cont) := { |
| bssgpPduType := '71'O, |
| destination_Cell_Identifier := dest, |
| source_Cell_Identifier := src, |
| rIM_Container := cont |
| } |
| template (value) RANTransparentContainer ts_RANTransparentContainer_RAN_INFO_REQ(template (value) PDU_BSSGP_RAN_INFORMATION_REQUEST_GTPC pdu) := { |
| type_gtpc := '90'O, |
| lengthf := 0, /* FIXME */ |
| rANTransparentContainerField := { |
| pDU_BSSGP_RAN_INFORMATION_REQUEST := pdu |
| } |
| } |
| |
| /* RAN_Information */ |
| template ApplContainer_or_ApplErrContainer_NACC_GTPC |
| tru_GTPC_ApplContainer_NACC(BssgpCellId cid, boolean psi_type, integer si_psi_num, octetstring si_psi) := { |
| application_Container := tr_GTPC_RAN_Information_Application_Container_NACC(cid, psi_type, si_psi_num, si_psi) |
| } |
| template (value) ApplContainer_or_ApplErrContainer_NACC_GTPC |
| tsu_GTPC_ApplContainer_NACC(BssgpCellId cid, boolean psi_type, integer si_psi_num, octetstring si_psi) := { |
| application_Container := ts_GTPC_RAN_Information_Application_Container_NACC(cid, psi_type, si_psi_num, si_psi) |
| } |
| template ApplContainer_or_ApplErrContainer_GTPC |
| tru_GTPC_ApplContainer_or_ApplErrContainer_NACC(template ApplContainer_or_ApplErrContainer_NACC_GTPC cont) := { |
| nacc := cont |
| } |
| template (value) ApplContainer_or_ApplErrContainer_GTPC |
| tsu_GTPC_ApplContainer_or_ApplErrContainer_NACC(template (value) ApplContainer_or_ApplErrContainer_NACC_GTPC cont) := { |
| nacc := cont |
| } |
| template RAN_Information_RIM_Container_GTPC |
| tr_GTPC_RAN_Information_RIM_Container(template RIM_Application_Identity_GTPC app_id, |
| template RIM_Sequence_Number_GTPC seq, |
| template RIM_PDU_Indications_GTPC ind, |
| template RIM_Protocol_Version_Number_GTPC ver := omit, |
| template ApplContainer_or_ApplErrContainer_GTPC app_cont := omit, |
| template SON_TransferApplicationIdentity son_app_id := omit) := { |
| iEI := '58'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := ? |
| }, |
| rIM_Application_Identity := app_id, |
| rIM_Sequence_Number := seq, |
| rIM_PDU_Indications := ind, |
| rIM_Protocol_Version_Number := ver, |
| applContainer_or_ApplErrContainer := app_cont, |
| sON_TransferApplicationIdentity := son_app_id |
| } |
| template (value) RAN_Information_RIM_Container_GTPC |
| ts_GTPC_RAN_Information_RIM_Container(template (value) RIM_Application_Identity_GTPC app_id, |
| template (value) RIM_Sequence_Number_GTPC seq, |
| template (value) RIM_PDU_Indications_GTPC ind, |
| template (omit) RIM_Protocol_Version_Number_GTPC ver := omit, |
| template (omit) ApplContainer_or_ApplErrContainer_GTPC app_cont := omit, |
| template (omit) SON_TransferApplicationIdentity son_app_id := omit) := { |
| iEI := '58'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := 0 /* overwritten */ |
| }, |
| rIM_Application_Identity := app_id, |
| rIM_Sequence_Number := seq, |
| rIM_PDU_Indications := ind, |
| rIM_Protocol_Version_Number := ver, |
| applContainer_or_ApplErrContainer := app_cont, |
| sON_TransferApplicationIdentity := son_app_id |
| } |
| template PDU_BSSGP_RAN_INFORMATION_GTPC |
| tr_GTPC_RAN_Information(template RIM_Routing_Information_GTPC dest, |
| template RIM_Routing_Information_GTPC src, |
| template RAN_Information_RIM_Container_GTPC cont) := { |
| bssgpPduType := '70'O, |
| destination_Cell_Identifier := dest, |
| source_Cell_Identifier := src, |
| rIM_Container := cont |
| } |
| template (value) PDU_BSSGP_RAN_INFORMATION_GTPC |
| ts_GTPC_RAN_Information(template (value) RIM_Routing_Information_GTPC dest, |
| template (value) RIM_Routing_Information_GTPC src, |
| template (value) RAN_Information_RIM_Container_GTPC cont) := { |
| bssgpPduType := '70'O, |
| destination_Cell_Identifier := dest, |
| source_Cell_Identifier := src, |
| rIM_Container := cont |
| } |
| template RANTransparentContainer tr_RANTransparentContainer_RAN_INFO(template PDU_BSSGP_RAN_INFORMATION_GTPC pdu) := { |
| type_gtpc := '90'O, |
| lengthf := ?, |
| rANTransparentContainerField := { |
| pDU_BSSGP_RAN_INFORMATION := pdu |
| } |
| } |
| template (value) RANTransparentContainer ts_RANTransparentContainer_RAN_INFO(template (value) PDU_BSSGP_RAN_INFORMATION_GTPC pdu) := { |
| type_gtpc := '90'O, |
| lengthf := 0, /* overwritten */ |
| rANTransparentContainerField := { |
| pDU_BSSGP_RAN_INFORMATION := pdu |
| } |
| } |
| |
| template RANTransparentContainer tr_RANTransparentContainer(template RANTransparentContainerField rANTransparentContainerField) := { |
| type_gtpc := '90'O, |
| lengthf := ?, |
| rANTransparentContainerField := rANTransparentContainerField |
| } |
| template (value) RANTransparentContainer ts_RANTransparentContainer(template (value) RANTransparentContainerField rANTransparentContainerField) := { |
| type_gtpc := '90'O, |
| lengthf := 0, /* overwritten */ |
| rANTransparentContainerField := rANTransparentContainerField |
| } |
| template GTPC_PDUs tr_RANInfoRelay(template RANTransparentContainer transparentContainer) := { |
| ranInformationRelay := { |
| transparentContainer := transparentContainer, |
| rIM_RoutingAddress := *, |
| rIM_RoutingAddress_Discriminator := *, |
| private_extension_gtpc := * |
| } |
| } |
| template (value) GTPC_PDUs ts_RANInfoRelay(template (value) RANTransparentContainer transparentContainer) := { |
| ranInformationRelay := { |
| transparentContainer := transparentContainer, |
| rIM_RoutingAddress := omit, |
| rIM_RoutingAddress_Discriminator := omit, |
| private_extension_gtpc := omit |
| } |
| } |
| template Gtp1cUnitdata |
| tr_GTPC_RANInfoRelay(template GtpPeer peer, |
| template RANTransparentContainer transparentContainer) := { |
| peer := peer, |
| gtpc := tr_GTP1C_PDU(rANInformationRelay, '00000000'O, tr_RANInfoRelay(transparentContainer)) |
| } |
| template (value) Gtp1cUnitdata |
| ts_GTPC_RANInfoRelay(template (value) GtpPeer peer, |
| template (value) RANTransparentContainer transparentContainer) := { |
| peer := peer, |
| gtpc := ts_GTP1C_PDU(rANInformationRelay, '00000000'O, valueof(ts_RANInfoRelay(transparentContainer)), 0) |
| } |
| |
| |
| template RAN_Information_Request_RIM_Container_GTPC |
| tr_GTPC_RAN_Information_Request_RIM_Container(template RIM_Application_Identity_GTPC app_id := ?, |
| template RIM_Sequence_Number_GTPC seq := ?, |
| template RIM_PDU_Indications_GTPC ind := ?, |
| template RIM_Protocol_Version_Number_GTPC ver := *, |
| template RAN_Information_Request_Application_Container_GTPC app_cont := *, |
| template SON_TransferApplicationIdentity son_app_id := *) := { |
| iEI := '57'O, |
| ext := '1'B, |
| lengthIndicator := { |
| length1 := ? |
| }, |
| rIM_Application_Identity := app_id, |
| rIM_Sequence_Number := seq, |
| rIM_PDU_Indications := ind, |
| rIM_Protocol_Version_Number := ver, |
| application_Container := app_cont, |
| sON_TransferApplicationIdentity := son_app_id |
| } |
| |
| /* GTP-U */ |
| |
| template PDU_GTPU tr_GTP1U_PDU(template OCT1 msg_type, template OCT4 teid, template GTPU_IEs ies := ?) := { |
| pn_bit := ?, |
| s_bit := ?, |
| e_bit := ?, |
| spare := ?, |
| /* Protocol Type flag (PT) shall be set to '1' in GTP */ |
| pt := '1'B, |
| /* Version shall be set to decimal 1 ('001'). */ |
| version := '001'B, |
| messageType := msg_type, |
| lengthf := ?, |
| teid := teid, |
| opt_part := *, |
| gtpu_IEs := ies |
| } |
| |
| function f_GTPU_s_bit(template (omit) uint16_t seq) return BIT1 { |
| if (istemplatekind(seq, "omit")) { |
| return '0'B; |
| } |
| return '1'B; |
| } |
| |
| function f_GTPU_opt_part(template (omit) uint16_t seq) return template (omit) GTPU_Header_optional_part { |
| if (istemplatekind(seq, "omit")) { |
| return omit; |
| } |
| var GTPU_Header_optional_part ret := { |
| sequenceNumber := int2oct(valueof(seq), 2), |
| npduNumber := '00'O, |
| nextExtHeader := '00'O, |
| gTPU_extensionHeader_List := omit |
| }; |
| return ret; |
| } |
| |
| /* generalized GTP-U send template */ |
| template PDU_GTPU ts_GTP1U_PDU(OCT1 msg_type, template (omit) uint16_t seq, OCT4 teid, GTPU_IEs ies) := { |
| /* N-PDU Number flag (PN): the GTP-U header contains a meaningful N-PDU Number field if the PN |
| * flag is set to 1. */ |
| pn_bit := '0'B, /* we assume the encoder overwrites this if an optional part is given */ |
| /* If the Sequence Number flag (S) is set to '1' the sequence number field is present and |
| * meaningful otherwise it is set to '0'. For GTP-U messages Echo Request, Echo Response, |
| * Error Indication and Supported Extension Headers Notification, the S flag shall be set to '1'. |
| * |
| * Note that the caller must ensure that these conditions hold. |
| * The caller can either pass a sequence number (we set s_bit to '1'B) when appropriate, |
| * or may omit the sequence number (we set s_bit to '0'B). */ |
| s_bit := f_GTPU_s_bit(seq), |
| /* Extension header presence */ |
| e_bit := '0'B, |
| spare := '0'B, |
| /* Protocol Type flag (PT) shall be set to '1' in GTP */ |
| pt := '1'B, |
| /* Version shall be set to decimal 1 ('001'). */ |
| version := '001'B, |
| messageType := msg_type, |
| lengthf := 0, /* we assume encoder overwrites this */ |
| teid := teid, |
| opt_part := f_GTPU_opt_part(seq), |
| gtpu_IEs := ies |
| } |
| |
| template Gtp1uUnitdata tr_GTPU_MsgType(template GtpPeer peer, template OCT1 msg_type, template OCT4 teid) := { |
| peer := peer, |
| gtpu := tr_GTP1U_PDU(msg_type, teid) |
| } |
| |
| |
| /* template matching reception of GTP-U echo-request */ |
| template Gtp1uUnitdata tr_GTPU_PING(template GtpPeer peer) := tr_GTPU_MsgType(peer, echoRequest, '00000000'O); |
| |
| /* template matching reception of GTP-U GPDU */ |
| template GTPU_IEs t_GPDU(template octetstring data) := { |
| g_PDU_IEs := { |
| data := data |
| } |
| } |
| template Gtp1uUnitdata tr_GTPU_GPDU(template GtpPeer peer, template OCT4 teid, template octetstring data := ?) := { |
| peer := peer, |
| gtpu := tr_GTP1U_PDU('FF'O, teid, t_GPDU(data)) |
| } |
| |
| template GTPU_IEs ts_UEchoRespPDU(OCT1 restart_counter) := { |
| echoResponse_IEs := { |
| recovery_gtpu := { |
| type_gtpu := '00'O, /* we assume encoder fixes? */ |
| restartCounter := restart_counter |
| }, |
| private_extension_gtpu := omit |
| } |
| } |
| |
| /* master template for sending a GTP-U echo response */ |
| template Gtp1uUnitdata ts_GTPU_PONG(GtpPeer peer, uint16_t seq, OCT1 rest_ctr) := { |
| peer := peer, |
| gtpu := ts_GTP1U_PDU(echoResponse, seq, '00000000'O, valueof(ts_UEchoRespPDU(rest_ctr))) |
| } |
| |
| template GSNAddress_gtpu ts_UGsnAddr(octetstring ip_addr) := { |
| type_gtpu := '85'O, |
| lengthf := lengthof(ip_addr), |
| gSNAddressValue := ip_addr |
| } |
| |
| template TeidDataI_gtpu ts_UteidDataI(OCT4 teid) := { |
| type_gtpu := '10'O, |
| teidDataI := teid |
| } |
| |
| template GTPU_IEs ts_UErrorIndication(OCT4 teid, octetstring gsn_addr) := { |
| errorIndication_IEs := { |
| teidDataI_gtpu := ts_UteidDataI(teid), |
| gSNAddress_gtpu := ts_UGsnAddr(gsn_addr), |
| private_extension_gtpu := omit |
| } |
| } |
| |
| /* master template for sending a GTP-U Error indication */ |
| template Gtp1uUnitdata ts_GTPU_ErrorIndication(GtpPeer peer, uint16_t seq, OCT4 teid, octetstring gsn_addr) := { |
| peer := peer, |
| gtpu := ts_GTP1U_PDU('1A'O, seq, '00000000'O, valueof(ts_UErrorIndication(teid, gsn_addr))) |
| } |
| |
| /* master template for sending a GTP-U user plane data */ |
| template Gtp1uUnitdata ts_GTP1U_GPDU(GtpPeer peer, template (omit) uint16_t seq, OCT4 teid, octetstring data) := { |
| peer := peer, |
| gtpu := ts_GTP1U_PDU('FF'O, seq, teid, { g_PDU_IEs := { data := data }}) |
| } |
| } |