mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2017 Software Radio Systems Limited
|
|
*
|
|
* \section LICENSE
|
|
*
|
|
* This file is part of srsLTE.
|
|
*
|
|
* srsUE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsUE is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
#ifndef SRSLTE_GTPC_H
|
|
#define SRSLTE_GTPC_H
|
|
|
|
#include <stdint.h>
|
|
#include "srslte/asn1/gtpc_msg.h"
|
|
|
|
|
|
namespace srslte{
|
|
|
|
/*GTP-C Version*/
|
|
const uint8_t GTPC_V2 = 2;
|
|
|
|
/****************************************************************************
|
|
* GTP-C v2 Header
|
|
* Ref: 3GPP TS 29.274 v10.14.0 Section 5
|
|
*
|
|
* | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
|
|
*
|
|
* 1 | Version | P | T | S | S | S |
|
|
* 2 | Message Type |
|
|
* 3 | Length (1st Octet) |
|
|
* 4 | Length (2nd Octet) |
|
|
* m | If T=1, TEID (1st Octet) |
|
|
* m+1 | If T=1, TEID (2nd Octet) |
|
|
* m+2 | If T=1, TEID (3st Octet) |
|
|
* m+3 | If T=1, TEID (4st Octet) |
|
|
* n | Sequence |
|
|
* n+1 | Sequence |
|
|
* n+2 | Sequence |
|
|
* n+3 | Spare |
|
|
***************************************************************************/
|
|
typedef struct gtpc_header
|
|
{
|
|
uint8_t version;
|
|
bool piggyback;
|
|
bool teid_present;
|
|
uint8_t type;
|
|
uint64_t teid;
|
|
uint64_t sequence;
|
|
}gtpc_header_t;
|
|
|
|
/****************************************************************************
|
|
* GTP-C v2 Payload
|
|
* Ref: 3GPP TS 29.274 v10.14.0 Section 5
|
|
*
|
|
* Union that hold the different structures for the possible message types.
|
|
***************************************************************************/
|
|
typedef union gtpc_msg_choice
|
|
{
|
|
struct gtpc_create_session_request create_session_request;
|
|
struct gtpc_create_session_response create_session_response;
|
|
struct gtpc_modify_bearer_request modify_bearer_request;
|
|
struct gtpc_modify_bearer_response modify_bearer_response;
|
|
struct gtpc_release_access_bearers_request release_access_bearers_request;
|
|
struct gtpc_release_access_bearers_response release_access_bearers_response;
|
|
struct gtpc_delete_session_request delete_session_request;
|
|
struct gtpc_delete_session_response delete_session_response;
|
|
}gtpc_msg_choice_t;
|
|
|
|
/****************************************************************************
|
|
* GTP-C v2 Message
|
|
* Ref: 3GPP TS 29.274 v10.14.0
|
|
*
|
|
* This is the main structure to represent a GTP-C message. It is composed
|
|
* of one GTP-C header and one union of structures, which can hold
|
|
* all the possible GTP-C messages
|
|
***************************************************************************/
|
|
typedef struct gtpc_pdu
|
|
{
|
|
struct gtpc_header header;
|
|
union gtpc_msg_choice choice;
|
|
}gtpc_pdu_t;
|
|
}//namespace
|
|
#endif // SRSLTE_GTPC_H
|