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-rwxr-xr-xlibtransport/src/hicn/transport/core/memif_connector.h162
1 files changed, 162 insertions, 0 deletions
diff --git a/libtransport/src/hicn/transport/core/memif_connector.h b/libtransport/src/hicn/transport/core/memif_connector.h
new file mode 100755
index 000000000..24c8ac16c
--- /dev/null
+++ b/libtransport/src/hicn/transport/core/memif_connector.h
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2017-2019 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.
+ */
+
+#pragma once
+
+#include <hicn/transport/config.h>
+#include <hicn/transport/core/connector.h>
+#include <hicn/transport/core/hicn_binary_api.h>
+#include <hicn/transport/portability/portability.h>
+#include <hicn/transport/utils/epoll_event_reactor.h>
+#include <hicn/transport/utils/fd_deadline_timer.h>
+#include <hicn/transport/utils/ring_buffer.h>
+
+#include <asio.hpp>
+#include <deque>
+#include <mutex>
+#include <thread>
+
+#ifdef __vpp__
+
+#define _Static_assert static_assert
+
+extern "C" {
+#include <memif/libmemif.h>
+};
+
+namespace transport {
+
+namespace core {
+
+typedef struct {
+ uint16_t index;
+ /* memif conenction handle */
+ memif_conn_handle_t conn;
+ /* transmit queue id */
+ uint16_t tx_qid;
+ /* tx buffers */
+ memif_buffer_t *tx_bufs;
+ /* allocated tx buffers counter */
+ /* number of tx buffers pointing to shared memory */
+ uint16_t tx_buf_num;
+ /* rx buffers */
+ memif_buffer_t *rx_bufs;
+ /* allcoated rx buffers counter */
+ /* number of rx buffers pointing to shared memory */
+ uint16_t rx_buf_num;
+ /* interface ip address */
+ uint8_t ip_addr[4];
+} memif_connection_t;
+
+#define APP_NAME "libtransport"
+#define IF_NAME "vpp_connection"
+
+#define MAX_MEMIF_BUFS 1024
+#define MEMIF_BUF_SIZE 2048
+#define MEMIF_LOG2_RING_SIZE 11
+
+class MemifConnector : public Connector {
+ public:
+ MemifConnector(PacketReceivedCallback &&receive_callback,
+ OnReconnect &&on_reconnect_callback,
+ asio::io_service &io_service,
+ std::string app_name = "Libtransport");
+
+ ~MemifConnector() override;
+
+ void send(const Packet::MemBufPtr &packet) override;
+
+ void send(const uint8_t *packet, std::size_t len,
+ const PacketSentCallback &packet_sent = 0) override;
+
+ void close() override;
+
+ void connect(uint32_t memif_id, long memif_mode);
+
+ // void runEventsLoop();
+
+ void enableBurst() override;
+
+ void state() override;
+
+ TRANSPORT_ALWAYS_INLINE uint32_t getMemifId() { return memif_id_; };
+
+ private:
+ void init();
+
+ int doSend();
+
+ int createMemif(uint32_t index, uint8_t mode, char *s);
+
+ uint32_t getMemifConfiguration();
+
+ int deleteMemif();
+
+ static int controlFdUpdate(int fd, uint8_t events);
+
+ static int onConnect(memif_conn_handle_t conn, void *private_ctx);
+
+ static int onDisconnect(memif_conn_handle_t conn, void *private_ctx);
+
+ static int onInterrupt(memif_conn_handle_t conn, void *private_ctx,
+ uint16_t qid);
+
+ void threadMain();
+
+ int txBurst(uint16_t qid);
+
+ int bufferAlloc(long n, uint16_t qid);
+
+ void sendCallback(const std::error_code &ec);
+
+ void processInputBuffer();
+
+ private:
+ static utils::EpollEventReactor main_event_reactor_;
+ static std::unique_ptr<std::thread> main_worker_;
+
+ int epfd;
+ std::unique_ptr<std::thread> memif_worker_;
+ utils::EpollEventReactor event_reactor_;
+ volatile bool timer_set_;
+ std::unique_ptr<utils::FdDeadlineTimer> send_timer_;
+ asio::io_service &io_service_;
+ std::unique_ptr<asio::io_service::work> work_;
+ uint32_t packet_counter_;
+ memif_connection_t memif_connection_;
+ uint16_t tx_buf_counter_;
+
+ PacketRing input_buffer_;
+ volatile bool is_connecting_;
+ volatile bool is_reconnection_;
+ bool data_available_;
+ bool enable_burst_;
+ uint32_t memif_id_;
+ uint8_t memif_mode_;
+ std::string app_name_;
+ uint16_t transmission_index_;
+ PacketReceivedCallback receive_callback_;
+ OnReconnect on_reconnect_callback_;
+ utils::SpinLock write_msgs_lock_;
+ std::string socket_filename_;
+
+ static std::once_flag flag_;
+};
+
+} // end namespace core
+
+} // end namespace transport
+
+#endif // __vpp__ \ No newline at end of file