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+/*
+ * Copyright (c) 2021 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 listener_vft.h
+ * @brief Listener VFT
+ */
+
+#ifndef HICNLIGHT_LISTENER_VFT_H
+#define HICNLIGHT_LISTENER_VFT_H
+
+#include <hicn/core/address_pair.h>
+#include <hicn/core/connection.h>
+#include <hicn/core/listener.h>
+#include <hicn/face.h>
+
+typedef struct {
+ int (*initialize)(listener_t* listener);
+ void (*finalize)(listener_t* listener);
+ int (*punt)(const listener_t* listener, const char* prefix_s);
+ 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, const address_t* dummy,
+ msgbuf_t* msgbuf, bool queue);
+ int (*send_packet)(const connection_t* connection, const uint8_t* packet,
+ size_t size);
+ ssize_t (*read_single)(int fd, msgbuf_t* msgbuf, address_t* address);
+ ssize_t (*read_batch)(int fd, msgbuf_t** msgbuf, address_t** address,
+ size_t len);
+ size_t data_size;
+} listener_ops_t;
+
+#define DECLARE_LISTENER(NAME) \
+ const listener_ops_t listener_##NAME = { \
+ .initialize = listener_##NAME##_initialize, \
+ .finalize = listener_##NAME##_finalize, \
+ .punt = listener_##NAME##_punt, \
+ .get_socket = listener_##NAME##_get_socket, \
+ .read_single = listener_##NAME##_read_single, \
+ .read_batch = listener_##NAME##_read_batch, \
+ .data_size = sizeof(listener_##NAME##_data_t), \
+ }
+
+extern const listener_ops_t* listener_vft[];
+
+#endif /* HICNLIGHT_LISTENER_VFT_H */