remove unecessary files

src/gtpv1u/CMakeLists.txt

-################################################################################
-# Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The OpenAirInterface Software Alliance licenses this file to You under
-# the OAI Public License, Version 1.1  (the "License"); you may not use this file
-# except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.openairinterface.org/?page_id=698
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#-------------------------------------------------------------------------------
-# For more information about the OpenAirInterface (OAI) Software Alliance:
-#      contact@openairinterface.org
-################################################################################
-add_library(GTPV1U STATIC
-    3gpp_29.281.cpp
-    gtpv1u.cpp
-    )
-
-include_directories(${SRC_TOP_DIR}/common)
-include_directories(${SRC_TOP_DIR}/common/msg)
-include_directories(${SRC_TOP_DIR}/common/utils)
-include_directories(${SRC_TOP_DIR}/itti)
-include_directories(${SRC_TOP_DIR}/gtpv1u)
-include_directories(${SRC_TOP_DIR}/udp)
-include_directories(${SRC_TOP_DIR}/../build/ext/spdlog/include)

src/gtpv1u/gtpu.h

-/*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
- */
-/*! \file gtpu.h
-* \brief
-* \author Lionel Gauthier
-* \company Eurecom
-* \email: lionel.gauthier@eurecom.fr
-*/
-
-#ifndef FILE_GTPU_SEEN
-#define FILE_GTPU_SEEN
-
-#include <endian.h>
-#include <stdint.h>
-
-struct gtpuhdr
-  {
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-  unsigned int pn:1;
-  unsigned int s:1;
-  unsigned int e:1;
-  unsigned int spare:1;
-  unsigned int pt:1;
-    unsigned int version:3;
-#elif __BYTE_ORDER == __BIG_ENDIAN
-    unsigned int version:3;
-    unsigned int pt:1;
-    unsigned int spare:1;
-    unsigned int e:1;
-    unsigned int s:1;
-    unsigned int pn:1;
-#else
-# error "Please fix <bits/endian.h>"
-#endif
-    // Message Type: This field indicates the type of GTP-U message.
-    uint8_t                         message_type;
-    // Length: This field indicates the length in octets of the payload, i.e. the rest of the packet following the mandatory
-    // part of the GTP header (that is the first 8 octets). The Sequence Number, the N-PDU Number or any Extension
-    // headers shall be considered to be part of the payload, i.e. included in the length count.
-    uint16_t                        message_length;
-    // Tunnel Endpoint Identifier (TEID): This field unambiguously identifies a tunnel endpoint in the receiving
-    // GTP-U protocol entity. The receiving end side of a GTP tunnel locally assigns the TEID value the transmitting
-    // side has to use. The TEID value shall be assigned in a non-predictable manner for PGW S5/S8/S2a/S2b
-    // interfaces (see 3GPP TS 33.250 [32]). The TEID shall be used by the receiving entity to find the PDP context,
-    // except for the following cases:
-    // -) The Echo Request/Response and Supported Extension Headers notification messages, where the Tunnel
-    //    Endpoint Identifier shall be set to all zeroes
-    // -) The Error Indication message where the Tunnel Endpoint Identifier shall be set to all zeros.
-    uint32_t                        teid;
-
-
-    /*The options start here. */
-  };
-#endif

src/gtpv1u/gtpv1u.cpp

-/*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
- */
-/*! \file gtpv1u.cpp
-  \brief
-  \author Lionel Gauthier
-  \company Eurecom
-  \email: lionel.gauthier@eurecom.fr
-*/
-
-#include "common_root_types.h"
-#include "conversions.hpp"
-#include "gtpu.h"
-#include "gtpv1u.hpp"
-
-#include <cstdlib>
-#include <sched.h>
-
-using namespace gtpv1u;
-using namespace std;
-
-extern itti_mw *itti_inst;
-
-
-
-////------------------------------------------------------------------------------
-//void udp_server::handle_receive(const int& error, std::size_t bytes_transferred)
-//{
-//  if (!error) {
-//    Logger::udp().trace( "udp_server::handle_receive on %s:%d from %s:%d",
-//        socket_.local_endpoint().address().to_string().c_str(), socket_.local_endpoint().port(),
-//        remote_endpoint_.address().to_string().c_str(), remote_endpoint_.port());
-//    if (app_) {
-//      app_->handle_receive(recv_buffer_.data(), bytes_transferred, remote_endpoint_);
-//    } else {
-//      Logger::udp().error( "No upper layer configured for handling UDP packet");
-//    }
-//    start_receive(app_);
-//  } else {
-//    Logger::udp().error( "udp_server::handle_receive err=%s/%d: %s", error.category().name(), error.value(), error.message());
-//  }
-//}
-
-//------------------------------------------------------------------------------
-gtpu_l4_stack::gtpu_l4_stack(const struct in_addr& address, const uint16_t port_num, const util::thread_sched_params& sched_params) :
-    udp_s(udp_server(address, port_num))
-{
-  Logger::gtpv1_u().info( "gtpu_l4_stack created listening to %s:%d", conv::toString(address).c_str(), port_num);
-
-  id = 0;
-  srand (time(NULL));
-  seq_num = rand() & 0x7FFFFFFF;
-  restart_counter = 0;
-  udp_s.start_receive(this, sched_params);
-}
-//------------------------------------------------------------------------------
-gtpu_l4_stack::gtpu_l4_stack(const struct in6_addr& address, const uint16_t port_num, const util::thread_sched_params& sched_params) :
-    udp_s(udp_server(address, port_num))
-{
-  Logger::gtpv1_u().info( "gtpu_l4_stack created listening to %s:%d", conv::toString(address).c_str(), port_num);
-
-  id = 0;
-  srand (time(NULL));
-  seq_num = rand() & 0x7FFFFFFF;
-  restart_counter = 0;
-  udp_s.start_receive(this, sched_params);
-}
-//------------------------------------------------------------------------------
-gtpu_l4_stack::gtpu_l4_stack(char * address, const uint16_t port_num, const util::thread_sched_params& sched_params) :
-        udp_s(udp_server(address, port_num))
-{
-  Logger::gtpv1_u().info( "gtpu_l4_stack created listening to %s:%d", address, port_num);
-
-  id = 0;
-  srand (time(NULL));
-  seq_num = rand() & 0x7FFFFFFF;
-  restart_counter = 0;
-  udp_s.start_receive(this, sched_params);
-
-}
-
-//------------------------------------------------------------------------------
-uint32_t gtpu_l4_stack::get_next_seq_num() {
-  seq_num++;
-  if (seq_num & 0x80000000) {
-    seq_num = 0;
-  }
-  return seq_num;
-}
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::handle_receive(char* recv_buffer, const std::size_t bytes_transferred,  const endpoint& r_endpoint)
-{
-  Logger::gtpv1_u().error( "TODO implement in derived class");
-}
-//------------------------------------------------------------------------------
-bool gtpu_l4_stack::check_initial_message_type(const uint8_t initial)
-{
-  switch (initial) {
-    case GTPU_ECHO_REQUEST:
-    case GTPU_END_MARKER:
-      return true;
-      break;
-    default:
-      return false;
-  }
-}
-//------------------------------------------------------------------------------
-bool gtpu_l4_stack::check_triggered_message_type(const uint8_t initial, const uint8_t triggered)
-{
-  Logger::gtpv1_u().info( "check_triggered_message_type GTPV1-U msg type %d/%d", (int)initial, (int)triggered);
-  switch (initial) {
-    case GTPU_ECHO_REQUEST:
-      if (triggered == GTPU_ECHO_RESPONSE) return true;
-      return false;
-      break;
-    case GTPU_ERROR_INDICATION:
-    case GTPU_SUPPORTED_EXTENSION_HEADERS_NOTIFICATION:
-       return true;
-      break;
-    default:
-      return false;
-  }
-}
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::handle_receive_message_cb(const gtpv1u_msg& msg, const struct sockaddr_storage& r_endpoint, const socklen_t& r_endpoint_addr_len, const task_id_t& task_id, bool &error, uint64_t& gtpc_tx_id)
-{
-}
-
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::send_g_pdu(const struct sockaddr_in& peer_addr, const teid_t teid, const char* payload, const ssize_t payload_len)
-{
-  struct gtpuhdr *gtpuhdr = reinterpret_cast<struct gtpuhdr *>(reinterpret_cast<uintptr_t>(payload) - (uintptr_t)sizeof(struct gtpuhdr));
-  gtpuhdr->spare = 0;
-  gtpuhdr->e = 0;
-  gtpuhdr->s = 0;
-  gtpuhdr->pn = 0;
-  gtpuhdr->pt = 1;
-  gtpuhdr->version = 1;
-  gtpuhdr->message_type = GTPU_G_PDU;
-  gtpuhdr->message_length = htobe16(payload_len);
-  gtpuhdr->teid = htobe32(teid);
-  udp_s.async_send_to(reinterpret_cast<const char*>(gtpuhdr), payload_len + sizeof(struct gtpuhdr), peer_addr);
-}
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::send_g_pdu(const struct sockaddr_in6& peer_addr, const teid_t teid, const char* payload, const ssize_t payload_len)
-{
-  struct gtpuhdr *gtpuhdr = reinterpret_cast<struct gtpuhdr *>(reinterpret_cast<uintptr_t>(payload) - (uintptr_t)sizeof(struct gtpuhdr));
-  gtpuhdr->spare = 0;
-  gtpuhdr->e = 0;
-  gtpuhdr->s = 0;
-  gtpuhdr->pn = 0;
-  gtpuhdr->pt = 1;
-  gtpuhdr->version = 1;
-  gtpuhdr->message_type = GTPU_G_PDU;
-  gtpuhdr->message_length = htobe16(payload_len);
-  gtpuhdr->teid = htobe32(teid);
-  udp_s.async_send_to(reinterpret_cast<const char*>(gtpuhdr), payload_len + sizeof(struct gtpuhdr), peer_addr);
-}
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::send_response(const gtpv1u_echo_response& gtp_ies)
-{
-  std::ostringstream oss(std::ostringstream::binary);
-  gtpv1u_msg msg(gtp_ies);
-  uint32_t teid = UNASSIGNED_TEID;
-  if (gtp_ies.get_teid(teid)) {
-    msg.set_teid(teid);
-  }
-  uint16_t sn = 0;
-  if (gtp_ies.get_sequence_number(sn)) {
-    msg.set_sequence_number(sn);
-  }
-  msg.dump_to(oss);
-  std::string bstream = oss.str();
-
-  udp_s.async_send_to(reinterpret_cast<const char*>(bstream.c_str()), bstream.length(), gtp_ies.r_endpoint);
-}
-//------------------------------------------------------------------------------
-void gtpu_l4_stack::send_indication(const gtpv1u_error_indication& gtp_ies)
-{
-  std::ostringstream oss(std::ostringstream::binary);
-  gtpv1u_msg msg(gtp_ies);
-  uint32_t teid = UNASSIGNED_TEID;
-  if (gtp_ies.get_teid(teid)) {
-    msg.set_teid(teid);
-  }
-  uint16_t sn = 0;
-  if (gtp_ies.get_sequence_number(sn)) {
-    msg.set_sequence_number(sn);
-  }
-  msg.dump_to(oss);
-  std::string bstream = oss.str();
-  
-  udp_s.async_send_to(reinterpret_cast<const char*>(bstream.c_str()), bstream.length(), gtp_ies.r_endpoint);
-}

src/gtpv1u/gtpv1u.hpp

-/*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
- */
-
-/*! \file gtpv1u.hpp
-  \brief
-  \author Lionel Gauthier
-  \company Eurecom
-  \email: lionel.gauthier@eurecom.fr
-*/
-#ifndef FILE_GTPV1U_HPP_SEEN
-#define FILE_GTPV1U_HPP_SEEN
-
-#include "3gpp_29.281.hpp"
-#include "itti.hpp"
-#include "msg_gtpv1u.hpp"
-#include "thread_sched.hpp"
-#include "udp.hpp"
-
-#include <iostream>
-#include <map>
-#include <memory>
-#include <stdint.h>
-#include <string>
-#include <system_error>
-#include <thread>
-#include <utility>
-#include <vector>
-
-namespace gtpv1u {
-
-static const uint16_t default_port = 2152;
-  
-
-class gtpu_l4_stack : public udp_application {
-#define GTPV1U_T3_RESPONSE_MS            1000
-#define GTPV1U_N3_REQUESTS               5
-#define GTPV1U_PROC_TIME_OUT_MS          ((GTPV1U_T3_RESPONSE_MS) * (GTPV1U_N3_REQUESTS + 1))
-
-protected:
-  uint32_t                          id;
-  udp_server                        udp_s;
-
-  // seems no need for std::atomic_uint32_t
-  uint32_t                        seq_num;
-  uint32_t                        restart_counter;
-
-  static bool check_initial_message_type(const uint8_t initial);
-  static bool check_triggered_message_type(const uint8_t initial, const uint8_t triggered);
-
-  uint32_t get_next_seq_num();
-
-public:
-  static const uint8_t version = 1;
-  gtpu_l4_stack(const struct in_addr& address, const uint16_t port_num, const util::thread_sched_params& sched_params);
-  gtpu_l4_stack(const struct in6_addr& address, const uint16_t port_num, const util::thread_sched_params& sched_params);
-  gtpu_l4_stack(char * ip_address, const uint16_t port_num, const util::thread_sched_params& sched_params);
-  virtual void handle_receive(char* recv_buffer, const std::size_t bytes_transferred, const endpoint& r_endpoint);
-  void handle_receive_message_cb(const gtpv1u_msg& msg, const struct sockaddr_storage& r_endpoint, const socklen_t& r_endpoint_addr_len, const task_id_t& task_id, bool &error, uint64_t& gtpc_tx_id);
-
-  void send_g_pdu(const struct sockaddr_in& peer_addr, const teid_t teid, const char* payload, const ssize_t payload_len);
-  void send_g_pdu(const struct sockaddr_in6& peer_addr, const teid_t teid, const char* payload, const ssize_t payload_len);
-
-  void send_response(const gtpv1u_echo_response& gtp_ies);
-  void send_indication(const gtpv1u_error_indication& gtp_ies);
-
-};
-} // namespace gtpv1u
-
-#endif /* FILE_GTPV1U_HPP_SEEN */