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+/*
+ * Copyright (c) 2017-2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.
+ */
+
+/**
+ * @file connection_vft.h
+ * @brief Connection VFT
+ */
+
+#ifndef HICNLIGHT_CONNECTION_VFT_H
+#define HICNLIGHT_CONNECTION_VFT_H
+
+#include "connection.h"
+
+typedef struct {
+ int (*initialize)(connection_t * connection);
+ void (*finalize)(connection_t * connection);
+ int (*get_socket)(const listener_t * listener, const address_t * local,
+ const address_t * remote, const char * interface_name);
+ int (*send)(const connection_t * connection, msgbuf_t * msgbuf, bool queue);
+ int (*send_packet)(const connection_t * connection,
+ const uint8_t * packet, size_t size);
+ void (*read_callback)(connection_t * connection, int fd, void * data);
+ size_t data_size;
+} connection_ops_t;
+
+#define DECLARE_CONNECTION(NAME) \
+const connection_ops_t connection_ ## NAME = { \
+ .initialize = connection_ ## NAME ## _initialize, \
+ .finalize = connection_ ## NAME ## _finalize, \
+ .get_socket = listener_ ## NAME ## _get_socket, \
+ .send = connection_ ## NAME ## _send, \
+ .send_packet = connection_ ## NAME ## _send_packet, \
+ .read_callback = connection_ ## NAME ## _read_callback, \
+ .data_size = sizeof(connection_ ## NAME ## _data_t), \
+};
+
+extern const connection_ops_t * connection_vft[];
+
+#endif /* HICNLIGHT_CONNECTION_VFT_H */