mirror of https://github.com/PentHertz/srsLTE.git
147 lines
4.0 KiB
C++
147 lines
4.0 KiB
C++
/**
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*
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* \section 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 <string.h>
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#include <map>
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/log.h"
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#include "common_enb.h"
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#include "srslte/common/threads.h"
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#include "srslte/srslte.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#ifndef SRSENB_GTPU_H
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#define SRSENB_GTPU_H
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namespace srsenb {
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/****************************************************************************
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* GTPU Header
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* Ref: 3GPP TS 29.281 v10.1.0 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 |PT | * | E | S |PN |
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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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* 5 | TEID (1st Octet) |
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* 6 | TEID (2nd Octet) |
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* 7 | TEID (3rd Octet) |
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* 8 | TEID (4th Octet) |
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***************************************************************************/
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#define GTPU_HEADER_LEN 8
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class gtpu
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:public gtpu_interface_rrc
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,public gtpu_interface_pdcp
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,public thread
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{
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public:
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gtpu();
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bool init(std::string gtp_bind_addr_, std::string mme_addr_, pdcp_interface_gtpu *pdcp_, srslte::log *gtpu_log_, bool enable_mbsfn = false);
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void stop();
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// gtpu_interface_rrc
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void add_bearer(uint16_t rnti, uint32_t lcid, uint32_t addr, uint32_t teid_out, uint32_t *teid_in);
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void rem_bearer(uint16_t rnti, uint32_t lcid);
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void rem_user(uint16_t rnti);
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// gtpu_interface_pdcp
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void write_pdu(uint16_t rnti, uint32_t lcid, srslte::byte_buffer_t *pdu);
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private:
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static const int THREAD_PRIO = 65;
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static const int GTPU_PORT = 2152;
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srslte::byte_buffer_pool *pool;
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bool running;
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bool run_enable;
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bool enable_mbsfn;
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std::string gtp_bind_addr;
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std::string mme_addr;
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srsenb::pdcp_interface_gtpu *pdcp;
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srslte::log *gtpu_log;
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// Class to create
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class mch_thread : public thread {
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public:
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mch_thread() : initiated(false),running(false),run_enable(false),pool(NULL) {}
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bool init(pdcp_interface_gtpu *pdcp_, srslte::log *gtpu_log_);
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void stop();
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private:
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void run_thread();
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bool initiated;
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bool running;
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bool run_enable;
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static const int MCH_THREAD_PRIO = 65;
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pdcp_interface_gtpu *pdcp;
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srslte::log *gtpu_log;
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int m1u_sd;
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int lcid_counter;
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srslte::byte_buffer_pool *pool;
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};
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// MCH thread insteance
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mch_thread mchthread;
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typedef struct{
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uint32_t teids_in[SRSENB_N_RADIO_BEARERS];
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uint32_t teids_out[SRSENB_N_RADIO_BEARERS];
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uint32_t spgw_addrs[SRSENB_N_RADIO_BEARERS];
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}bearer_map;
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std::map<uint16_t, bearer_map> rnti_bearers;
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// Socket file descriptors
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int snk_fd;
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int src_fd;
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//Threading
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void run_thread();
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pthread_mutex_t mutex;
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/****************************************************************************
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* TEID to RNIT/LCID helper functions
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***************************************************************************/
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void teidin_to_rntilcid(uint32_t teidin, uint16_t *rnti, uint16_t *lcid);
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void rntilcid_to_teidin(uint16_t rnti, uint16_t lcid, uint32_t *teidin);
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};
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} // namespace srsenb
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#endif // SRSENB_GTPU_H
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