fix(agw): Added uint test case on start and stop of open flow controller

lte/gateway/c/core/oai/test/sgw_s8_task/CMakeLists.txt

@@ -19,6 +19,7 @@ include_directories("${PROJECT_SOURCE_DIR}/tasks/sgw_s8")
 set(SGW_S8_TEST_CONFIG_SRC
     sgw_s8_test.cpp
     sgw_csr.cpp
+    sgw_open_flow_controller.cpp
     )
 
 add_executable(sgw_s8_test ${SGW_S8_TEST_CONFIG_SRC})

lte/gateway/c/core/oai/test/sgw_s8_task/sgw_open_flow_controller.cpp

@@ -0,0 +1,80 @@
+/**
+ * Copyright 2020 The Magma Authors.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * 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.
+ */
+
+#include <gtest/gtest.h>
+extern "C" {
+#include "log.h"
+#include "sgw_s8_s11_handlers.h"
+#include "sgw_handlers.h"
+#include "spgw_types.h"
+#include "s11_messages_types.h"
+#include "common_types.h"
+#include "sgw_config.h"
+#include "dynamic_memory_check.h"
+#include "sgw_context_manager.h"
+#include "gtpv1u.h"
+}
+
+using ::testing::Test;
+spgw_config_t spgw_config;
+
+const struct gtp_tunnel_ops* gtp_tunnel_ops;
+void initialize_gtpv1u(void) {
+  int rv = 0;
+  struct in_addr netaddr;
+  uint32_t netmask = 0;
+  int fd0          = 2;
+  int fd1          = 5;
+  int mtu          = 1024;
+  gtp_tunnel_ops   = gtp_tunnel_ops_init_openflow();
+  if (gtp_tunnel_ops == NULL) {
+    OAILOG_CRITICAL(LOG_GTPV1U, "ERROR in initializing gtp_tunnel_ops\n");
+    return;
+  }
+  // Reset GTP tunnel states
+  rv = gtp_tunnel_ops->reset();
+  if (rv != 0) {
+    OAILOG_CRITICAL(LOG_GTPV1U, "ERROR clean existing gtp states.\n");
+    return;
+  }
+  netaddr.s_addr = INADDR_ANY;
+  netmask        = 0;
+  // Init GTP device, using the same MTU as SGi.
+  gtp_tunnel_ops->init(&netaddr, netmask, mtu, &fd0, &fd1, false);
+
+  // END-GTP quick integration only for evaluation purpose
+
+  OAILOG_DEBUG(LOG_GTPV1U, "Initializing GTPV1U interface: DONE\n");
+  return;
+}
+
+void uninitialize_gtpv1u(void) {
+  gtp_tunnel_ops->uninit();
+  OAILOG_DEBUG(LOG_GTPV1U, "Uninitializing GTPV1U interface: DONE\n");
+  return;
+}
+
+TEST(SGW_S8_OVSTest, openflowControllerStartAndStop) {
+  spgw_config.pgw_config.enable_nat                 = false;
+  spgw_config.sgw_config.ovs_config.uplink_port_num = 2;
+
+  spgw_config.sgw_config.ovs_config.uplink_mac =
+      bfromcstr_with_str_len("ff:ff:ff:ff:ff:ff", strlen("ff:ff:ff:ff:ff:ff"));
+  spgw_config.sgw_config.ovs_config.gtp_port_num                  = 32768;
+  spgw_config.sgw_config.ovs_config.mtr_port_num                  = 15577;
+  spgw_config.sgw_config.ovs_config.internal_sampling_port_num    = 15578;
+  spgw_config.sgw_config.ovs_config.internal_sampling_fwd_tbl_num = 201;
+  initialize_gtpv1u();
+  bdestroy_wrapper(&spgw_config.sgw_config.ovs_config.uplink_mac);
+  uninitialize_gtpv1u();
+}