Sync from upstream llama.cpp repository

ggml/include/ggml-rpc.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "ggml-backend.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define RPC_PROTO_MAJOR_VERSION    3
+#define RPC_PROTO_MINOR_VERSION    6
+#define RPC_PROTO_PATCH_VERSION    0
+#define GGML_RPC_MAX_SERVERS       16
+
+// backend API
+GGML_BACKEND_API ggml_backend_t ggml_backend_rpc_init(const char * endpoint, uint32_t device);
+GGML_BACKEND_API bool ggml_backend_is_rpc(ggml_backend_t backend);
+
+GGML_BACKEND_API ggml_backend_buffer_type_t ggml_backend_rpc_buffer_type(const char * endpoint, uint32_t device);
+
+GGML_BACKEND_API void ggml_backend_rpc_get_device_memory(const char * endpoint, uint32_t device, size_t * free, size_t * total);
+
+GGML_BACKEND_API void ggml_backend_rpc_start_server(const char * endpoint, const char * cache_dir,
+                                                    size_t n_threads, size_t n_devices, ggml_backend_dev_t * devices);
+
+GGML_BACKEND_API ggml_backend_reg_t ggml_backend_rpc_reg(void);
+GGML_BACKEND_API ggml_backend_reg_t ggml_backend_rpc_add_server(const char * endpoint);
+
+#ifdef  __cplusplus
+}
+#endif