RedfishPkg/DxeRestExLib: DxeRestExLib

Add EFI REST EX helper library to create child instance of
REST EX service.

Signed-off-by: Abner Chang <abner.chang@hpe.com>

Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Fan Wang <fan.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Nickle Wang <nickle.wang@hpe.com>
Cc: Peter O'Hanley <peter.ohanley@hpe.com>
Reviewed-by: Nickle Wang <nickle.wang@hpe.com>

RedfishPkg/Include/Library/RestExLib.h

@@ -0,0 +1,42 @@
+/** @file
+  This library provides help functions for REST EX Protocol.
+
+  (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef REST_EX_LIB_H_
+#define REST_EX_LIB_H_
+
+#include <Protocol/RestEx.h>
+
+///
+/// Library class public functions
+///
+
+/**
+  This function allows the caller to create child handle for specific
+  REST server.
+
+  @param[in]  Image                The image handle used to open service.
+  @param[in]  AccessMode           Access mode of REST server.
+  @param[in]  ConfigType           Underlying configuration to communicate with REST server.
+  @param[in]  ServiceType          REST service type.
+  @param[out] ChildInstanceHandle  The handle to receive the create child.
+
+  @retval  EFI_SUCCESS            Can't create the corresponding REST EX child instance.
+  @retval  EFI_INVALID_PARAMETERS Any of input parameters is improper.
+
+**/
+EFI_STATUS
+RestExLibCreateChild (
+  IN EFI_HANDLE Image,
+  IN EFI_REST_EX_SERVICE_ACCESS_MODE  AccessMode,
+  IN EFI_REST_EX_CONFIG_TYPE ConfigType,
+  IN EFI_REST_EX_SERVICE_TYPE ServiceType,
+  OUT EFI_HANDLE *ChildInstanceHandle
+);
+
+#endif