mirror of https://github.com/PentHertz/srsLTE.git
178 lines
8.1 KiB
C
178 lines
8.1 KiB
C
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/*ection COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of srsLTE.
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*
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* srsUE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsUE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <stdint.h>
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#ifdef GTPC_V2
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#define GTPC_V2
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namespace srslte{
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/*GTP-C Version*/
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const uint8_t GTPC_V2 = 2;
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/****************************************************************
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*
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* GTP-C Message Types
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* Ref: TS 29.274 Table 6.1-1
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*
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****************************************************************/
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const uint8_t GTPC_MSG_TYPE_RESERVED = 0;
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const uint8_t GTPC_MSG_TYPE_ECHO_REQUEST = 1;
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const uint8_t GTPC_MSG_TYPE_ECHO_RESPONSE = 2;
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const uint8_t GTPC_MSG_TYPE_VERSION_SUPPORT = 3;
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//4-24 Reserved for S101
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//25-31 Reserved for Sv interface
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//SGSN/MME/ePDG to PGW (S4/S11, S5/S8, S2b)
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const uint8_t GTPC_MSG_TYPE_CREATE_SESSION_REQUEST = 32;
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const uint8_t GTPC_MSG_TYPE_CREATE_SESSION_RESPONSE = 33;
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const uint8_t GTPC_MSG_TYPE_DELETE_SESSION_REQUEST = 36;
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const uint8_t GTPC_MSG_TYPE_DELETE_SESSION_RESPONSE = 37;
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//SGSN/MME to PGW (S4/S11, S5/S8)
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const uint8_t GTPC_MSG_TYPE_MODIFY_BEARER_REQUEST = 34;
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const uint8_t GTPC_MSG_TYPE_MODIFY_BEARER_RESPONSE = 35;
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const uint8_t GTPC_MSG_TYPE_CHANGE_NOTIFICATION_REQUEST = 38;
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const uint8_t GTPC_MSG_TYPE_CHANGE_NOTIFICATION_RESPONSE = 39;
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//40 - 63 for future use
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const uint8_t GTPC_MSG_TYPE_RESUME_NOTIFICATION = 164;
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const uint8_t GTPC_MSG_TYPE_RESUME_ACKNOWLEDGE = 165;
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//Messages without explicit response
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const uint8_t GTPC_MSG_TYPE_MODIFY_BEARER_COMMAND = 64; //(MME/SGSN/ePDG to PGW – S11/S4, S5/S8, S2b)
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const uint8_t GTPC_MSG_TYPE_MODIFY_BEARER_FAILURE_INDICATION = 65; //(PGW to MME/SGSN/ePDG – S5/S8, S11/S4, S2b)
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const uint8_t GTPC_MSG_TYPE_DELETE_BEARER_COMMAND = 66; //(MME/SGSN to PGW – S11/S4, S5/S8)
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const uint8_t GTPC_MSG_TYPE_DELETE_BEARER_FAILURE_INDICATION = 67; //(PGW to MME/SGSN – S5/S8, S11/S4))
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const uint8_t GTPC_MSG_TYPE_BEARER_RESOURCE_COMMAND = 68; //(MME/SGSN to PGW – S11/S4, S5/S8)
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const uint8_t GTPC_MSG_TYPE_BEARER_RESOURCE_FAILURE_INDICATION = 69; //(PGW to MME/SGSN – S5/S8, S11/S4)
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const uint8_t GTPC_MSG_TYPE_DOWNLINK_DATA_NOTIFICATION_FAILURE_INDICATION = 70; //(SGSN/MME to SGW – S4/S11)
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const uint8_t GTPC_MSG_TYPE_TRACE_SESSION_ACTIVATION = 71; //(MME/SGSN/ePDG to PGW – S11/S4, S5/S8, S2b)
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const uint8_t GTPC_MSG_TYPE_TRACE_SESSION_DEACTIVATION = 72; //(MME/SGSN/ePDG to PGW – S11/S4, S5/S8, S2b)
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const uint8_t GTPC_MSG_TYPE_STOP_PAGING_INDICATION = 73; //(SGW to MME/SGSN – S11/S4)
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//74-94 For future use
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//P-GW to SGSN/MME/ePDG
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const uint8_t GTPC_MSG_TYPE_CREATE_BEARER_REQUEST = 95;
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const uint8_t GTPC_MSG_TYPE_CREATE_BEARER_RESPONSE = 96;
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const uint8_t GTPC_MSG_TYPE_UPDATE_BEARER_REQUEST = 97;
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const uint8_t GTPC_MSG_TYPE_UPDATE_BEARER_RESPONSE = 98;
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const uint8_t GTPC_MSG_TYPE_DELETE_BEARER_REQUEST = 99;
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const uint8_t GTPC_MSG_TYPE_DELETE_BEARER_RESPONSE = 100;
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//PGW to MME, MME to PGW, SGW to PGW, SGW to MME, PGW to ePDG, ePDG to PGW (S5/S8, S11, S2b)
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const uint8_t GTPC_MSG_TYPE_DELETE_PDN_CONNECTION_SET_REQUEST = 101;
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const uint8_t GTPC_MSG_TYPE_DELETE_PDN_CONNECTION_SET_RESPONSE = 102;
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//103-127 For future use
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//MME to MME, SGSN to MME, MME to SGSN, SGSN to SGSN (S3/S10/S16)
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const uint8_t GTPC_MSG_TYPE_IDENTIFICATION_REQUEST = 128;
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const uint8_t GTPC_MSG_TYPE_IDENTIFICATION_RESPONSE = 129;
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const uint8_t GTPC_MSG_TYPE_CONTEXT_REQUEST = 130;
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const uint8_t GTPC_MSG_TYPE_CONTEXT_RESPONSE = 131;
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const uint8_t GTPC_MSG_TYPE_CONTEXT_ACKNOWLEDGE = 132;
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const uint8_t GTPC_MSG_TYPE_FORWARD_RELOCATION_REQUEST = 133;
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const uint8_t GTPC_MSG_TYPE_FORWARD_RELOCATION_RESPONSE = 134;
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const uint8_t GTPC_MSG_TYPE_FORWARD_RELOCATION_COMPLETE_NOTIFICATION = 135;
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const uint8_t GTPC_MSG_TYPE_FORWARD_RELOCATION_COMPLETE_ACKNOWLEDGE = 136;
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const uint8_t GTPC_MSG_TYPE_FORWARD_ACCESS_CONTEXT_NOTIFICATION = 137;
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const uint8_t GTPC_MSG_TYPE_FORWARD_ACCESS_CONTEXT_ACKNOWLEDGE = 138;
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const uint8_t GTPC_MSG_TYPE_RELOCATION_CANCEL_REQUEST = 139;
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const uint8_t GTPC_MSG_TYPE_RELOCATION_CANCEL_RESPONSE = 140;
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const uint8_t GTPC_MSG_TYPE_CONFIGURATION_TRANSFER_TUNNEL = 141;
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//142 - 148 For future use
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const uint8_t GTPC_MSG_TYPE_RAN_INFORMATION_RELAY = 152;
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//SGSN to MME, MME to SGSN (S3)
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const uint8_t GTPC_MSG_TYPE_DETACH_NOTIFICATION = 149;
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const uint8_t GTPC_MSG_TYPE_DETACH_ACKNOWLEDGE = 150;
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const uint8_t GTPC_MSG_TYPE_CS_PAGING_INDICATION = 151;
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const uint8_t GTPC_MSG_TYPE_ALERT_MME_NOTIFICATION = 153;
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const uint8_t GTPC_MSG_TYPE_ALERT_MME_ACKNOWLEDGE = 154;
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const uint8_t GTPC_MSG_TYPE_UE_ACTIVITY_NOTIFICATION = 155;
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const uint8_t GTPC_MSG_TYPE_UE_ACTIVITY_ACKNOWLEDGE = 156;
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//157 - 159 For future use
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//GSN/MME to SGW, SGSN to MME (S4/S11/S3) SGSN to SGSN (S16), SGW to PGW (S5/S8)
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const uint8_t GTPC_MSG_TYPE_SUSPEND_NOTIFICATION = 162;
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const uint8_t GTPC_MSG_TYPE_SUSPEND_ACKNOWLEDGE = 163;
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//SGSN/MME to SGW (S4/S11)
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const uint8_t GTPC_MSG_TYPE_CREATE_FORWARDING_TUNNEL_REQUEST = 160;
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const uint8_t GTPC_MSG_TYPE_CREATE_FORWARDING_TUNNEL_RESPONSE = 161;
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const uint8_t GTPC_MSG_TYPE_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST = 166;
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const uint8_t GTPC_MSG_TYPE_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE = 167;
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const uint8_t GTPC_MSG_TYPE_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST = 168;
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const uint8_t GTPC_MSG_TYPE_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_RESPONSE = 169;
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const uint8_t GTPC_MSG_TYPE_RELEASE_ACCESS_BEARERS_REQUEST = 170;
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const uint8_t GTPC_MSG_TYPE_RELEASE_ACCESS_BEARERS_RESPONSE = 171;
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//172 - 175 For future use
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//SGW to SGSN/MME (S4/S11)
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const uint8_t GTPC_MSG_TYPE_DOWNLINK_DATA_NOTIFICATION = 176;
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const uint8_t GTPC_MSG_TYPE_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE = 177;
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const uint8_t GTPC_MSG_TYPE_PGW_RESTART_NOTIFICATION = 179;
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const uint8_t GTPC_MSG_TYPE_PGW_RESTART_NOTIFICATION_ACKNOWLEDGE = 180;
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//SGW to SGSN (S4)
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//178 Reserved. Allocated in earlier version of the specification.
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//181 -189 For future use
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//SGW to PGW, PGW to SGW (S5/S8)
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const uint8_t GTPC_MSG_TYPE_UPDATE_PDN_CONNECTION_SET_REQUEST = 200;
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const uint8_t GTPC_MSG_TYPE_UPDATE_PDN_CONNECTION_SET_RESPONSE = 201;
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//For future use
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//MME to SGW (S11)
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const uint8_t GTPC_MSG_TYPE_MODIFY_ACCESS_BEARERS_REQUEST = 211;
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const uint8_t GTPC_MSG_TYPE_MODIFY_ACCESS_BEARERS_RESPONSE = 212;
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//For future use
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//MBMS GW to MME/SGSN (Sm/Sn)
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_START_REQUEST = 231;
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_START_RESPONSE = 232;
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_UPDATE_REQUEST = 233;
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_UPDATE_RESPONSE = 234;
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_STOP_REQUEST = 235;
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const uint8_t GTPC_MSG_TYPE_MBMS_SESSION_STOP_RESPONSE = 236;
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//For future use
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//Other
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//240 - 255 For future use
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/****************************************************************************
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* GTP-C v2 Header
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* Ref: 3GPP TS 29.274 v10.14.0 Section 5
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*
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* | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
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*
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* 1 | Version | P | T | S | S | S |
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* 2 | Message Type |
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* 3 | Length (1st Octet) |
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* 4 | Length (2nd Octet) |
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* m | If T=1, TEID (1st Octet) |
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* m+1 | If T=1, TEID (2nd Octet) |
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* m+2 | If T=1, TEID (3st Octet) |
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* m+3 | If T=1, TEID (4st Octet) |
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* n | Sequence |
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* n+1 | Sequence |
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* n+2 | Sequence |
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* n+3 | Spare |
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***************************************************************************/
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typedef struct gtpc_header
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{
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uint8_t version;
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bool piggyback;
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bool tied_present;
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enum gtpc_msg_type msg_type;
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uint64_t teid;
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uint64_t sequence;
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} gtpc_header_t;
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};
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