+void vl_init_shmem (svm_region_t * vlib_rp, int is_vlib,
+ int is_private_region);
+void vl_client_install_client_message_handlers (void);
+
+/* API messages over sockets */
+
+extern vlib_node_registration_t memclnt_node;
+extern volatile int **vl_api_queue_cursizes;
+
+/* Events sent to the memclnt process */
+#define QUEUE_SIGNAL_EVENT 1
+#define SOCKET_READ_EVENT 2
+
+#define API_SOCKET_FILE "/run/vpp-api.sock"
+
+typedef struct
+{
+ clib_file_t *clib_file;
+ vl_api_registration_t *regp;
+ u8 *data;
+} vl_socket_args_for_process_t;
+
+typedef struct
+{
+ /* Server port number */
+ u8 *socket_name;
+
+ /* By default, localhost... */
+ u32 bind_address;
+
+ /*
+ * (listen, server, client) registrations. Shared memory
+ * registrations are in shared memory
+ */
+ vl_api_registration_t *registration_pool;
+ /*
+ * Chain-drag variables, so message API handlers
+ * (generally) don't know whether they're talking to a socket
+ * or to a shared-memory connection.
+ */
+ vl_api_registration_t *current_rp;
+ clib_file_t *current_uf;
+ /* One input buffer, shared across all sockets */
+ i8 *input_buffer;
+
+ /* pool of process args for socket clients */
+ vl_socket_args_for_process_t *process_args;
+
+ /* Listen for API connections here */
+ clib_socket_t socksvr_listen_socket;
+} socket_main_t;
+
+extern socket_main_t socket_main;
+
+typedef struct
+{
+ int socket_fd;
+ /* Temporarily disable the connection, so we can keep it around... */
+ int socket_enable;
+
+ clib_socket_t client_socket;
+
+ u32 socket_buffer_size;
+ u8 *socket_tx_buffer;
+ u8 *socket_rx_buffer;
+ u32 socket_tx_nbytes;
+ int control_pings_outstanding;
+} socket_client_main_t;
+
+extern socket_client_main_t socket_client_main;
+
+#define SOCKET_CLIENT_DEFAULT_BUFFER_SIZE 4096
+
+void socksvr_add_pending_output (struct clib_file *uf,
+ struct vl_api_registration_ *cf,
+ u8 * buffer, uword buffer_bytes);
+
+void vl_free_socket_registration_index (u32 pool_index);
+void vl_socket_process_msg (struct clib_file *uf,
+ struct vl_api_registration_ *rp, i8 * input_v);
+clib_error_t *vl_socket_read_ready (struct clib_file *uf);
+void vl_socket_add_pending_output (struct clib_file *uf,
+ struct vl_api_registration_ *rp,
+ u8 * buffer, uword buffer_bytes);
+void vl_socket_add_pending_output_no_flush (struct clib_file *uf,
+ struct vl_api_registration_ *rp,
+ u8 * buffer, uword buffer_bytes);
+clib_error_t *vl_socket_write_ready (struct clib_file *uf);
+void vl_socket_api_send (vl_api_registration_t * rp, u8 * elem);
+u32 sockclnt_open_index (char *client_name, char *hostname, int port);
+void sockclnt_close_index (u32 index);
+void vl_client_msg_api_send (vl_api_registration_t * cm, u8 * elem);
+vl_api_registration_t *sockclnt_get_registration (u32 index);
+void vl_api_socket_process_msg (clib_file_t * uf, vl_api_registration_t * rp,
+ i8 * input_v);
+
+int
+vl_socket_client_connect (socket_client_main_t * scm, char *socket_path,
+ char *client_name, u32 socket_buffer_size);
+void vl_socket_client_read_reply (socket_client_main_t * scm);
+void vl_socket_client_enable_disable (socket_client_main_t * scm, int enable);