[Rest Ex Definition PATCH 1/2] MdePkg/Include: Definitions of EFI REST EX Protocol

["Abner Chang" <abner.chang@hpe.com>]

Add definitions of EFI REST EX Protocol according
to UEFI spec v2.8 Section 29.7.2 EFI REST EX Protocol.

Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Signed-off-by: Fan Wang <fan.wang@intel.com>
Signed-off-by: Abner Chang <abner.chang@hpe.com>

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Nickle Wang <nickle.wang@hpe.com>
---
 MdePkg/Include/Protocol/RestEx.h | 388 +++++++++++++++++++++++++++++++
 MdePkg/MdePkg.dec                |   7 +
 2 files changed, 395 insertions(+)
 create mode 100644 MdePkg/Include/Protocol/RestEx.h

diff --git a/MdePkg/Include/Protocol/RestEx.h b/MdePkg/Include/Protocol/RestEx.h
new file mode 100644
index 0000000000..c42096d14c
--- /dev/null
+++ b/MdePkg/Include/Protocol/RestEx.h
@@ -0,0 +1,388 @@
+/** @file
+  This file defines the EFI REST EX Protocol interface. It is
+  split into the following two main sections.
+
+  - REST EX Service Binding Protocol
+  - REST EX Protocol
+
+   Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+  (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+
+**/
+
+#ifndef EFI_REST_EX_PROTOCOL_H_
+#define EFI_REST_EX_PROTOCOL_H_
+
+#include <Protocol/Http.h>
+
+//
+//GUID definitions
+//
+#define EFI_REST_EX_SERVICE_BINDING_PROTOCOL_GUID \
+  { \
+    0x456bbe01, 0x99d0, 0x45ea, {0xbb, 0x5f, 0x16, 0xd8, 0x4b, 0xed, 0xc5, 0x59 } \
+  }
+
+#define EFI_REST_EX_PROTOCOL_GUID \
+  { \
+    0x55648b91, 0xe7d, 0x40a3, {0xa9, 0xb3, 0xa8, 0x15, 0xd7, 0xea, 0xdf, 0x97 } \
+  }
+
+typedef struct _EFI_REST_EX_PROTOCOL EFI_REST_EX_PROTOCOL;
+
+//*******************************************************
+//EFI_REST_EX_SERVICE_INFO_VER
+//*******************************************************
+typedef struct {
+  UINT8  Major;
+  UINT8  Minor;
+} EFI_REST_EX_SERVICE_INFO_VER;
+
+//*******************************************************
+//EFI_REST_EX_SERVICE_INFO_HEADER
+//*******************************************************
+typedef struct {
+  UINT32                         Length;
+  EFI_REST_EX_SERVICE_INFO_VER   RestServiceInfoVer;
+} EFI_REST_EX_SERVICE_INFO_HEADER;
+
+//*******************************************************
+// EFI_REST_EX_SERVICE_TYPE
+//*******************************************************
+typedef enum {
+  EfiRestExServiceUnspecific = 1,
+  EfiRestExServiceRedfish,
+  EfiRestExServiceOdata,
+  EfiRestExServiceVendorSpecific = 0xff,
+  EfiRestExServiceTypeMax
+} EFI_REST_EX_SERVICE_TYPE;
+
+//*******************************************************
+// EFI_REST_EX_SERVICE_ACCESS_MODE
+//*******************************************************
+typedef enum {
+  EfiRestExServiceInBandAccess = 1,
+  EfiRestExServiceOutOfBandAccess = 2,
+  EfiRestExServiceModeMax
+} EFI_REST_EX_SERVICE_ACCESS_MODE;
+
+//*******************************************************
+// EFI_REST_EX_CONFIG_TYPE
+//*******************************************************
+typedef enum {
+  EfiRestExConfigHttp,
+  EfiRestExConfigUnspecific,
+  EfiRestExConfigTypeMax
+} EFI_REST_EX_CONFIG_TYPE;
+
+//*******************************************************
+//EFI_REST_EX_SERVICE_INFO v1.0
+//*******************************************************
+typedef struct {
+  EFI_REST_EX_SERVICE_INFO_HEADER  EfiRestExServiceInfoHeader;
+  EFI_REST_EX_SERVICE_TYPE         RestServiceType;
+  EFI_REST_EX_SERVICE_ACCESS_MODE  RestServiceAccessMode;
+  EFI_GUID                         VendorRestServiceName;
+  UINT32                           VendorSpecificDataLength;
+  UINT8                            *VendorSpecifcData;
+  EFI_REST_EX_CONFIG_TYPE          RestExConfigType;
+  UINT8                            RestExConfigDataLength;
+} EFI_REST_EX_SERVICE_INFO_V_1_0;
+
+//*******************************************************
+//EFI_REST_EX_SERVICE_INFO
+//*******************************************************
+typedef union {
+  EFI_REST_EX_SERVICE_INFO_HEADER EfiRestExServiceInfoHeader;
+  EFI_REST_EX_SERVICE_INFO_V_1_0  EfiRestExServiceInfoV10;
+} EFI_REST_EX_SERVICE_INFO;
+
+//*******************************************************
+// EFI_REST_EX_HTTP_CONFIG_DATA
+//*******************************************************
+typedef struct {
+  EFI_HTTP_CONFIG_DATA    HttpConfigData;
+  UINT32                  SendReceiveTimeout;
+} EFI_REST_EX_HTTP_CONFIG_DATA;
+
+//*******************************************************
+//EFI_REST_EX_CONFIG_DATA
+//*******************************************************
+typedef UINT8 *EFI_REST_EX_CONFIG_DATA;
+
+//*******************************************************
+//EFI_REST_EX_TOKEN
+//*******************************************************
+typedef struct {
+  EFI_EVENT         Event;
+  EFI_STATUS        Status;
+  EFI_HTTP_MESSAGE  *ResponseMessage;
+} EFI_REST_EX_TOKEN;
+
+/**
+  Provides a simple HTTP-like interface to send and receive resources from a REST service.
+
+  The SendReceive() function sends an HTTP request to this REST service, and returns a
+  response when the data is retrieved from the service. RequestMessage contains the HTTP
+  request to the REST resource identified by RequestMessage.Request.Url. The
+  ResponseMessage is the returned HTTP response for that request, including any HTTP
+  status.
+
+  @param[in]  This                Pointer to EFI_REST_EX_PROTOCOL instance for a particular
+                                  REST service.
+  @param[in]  RequestMessage      Pointer to the HTTP request data for this resource
+  @param[out] ResponseMessage     Pointer to the HTTP response data obtained for this requested.
+
+  @retval EFI_SUCCESS             operation succeeded.
+  @retval EFI_INVALID_PARAMETER   This, RequestMessage, or ResponseMessage are NULL.
+  @retval EFI_DEVICE_ERROR        An unexpected system or network error occurred.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_SEND_RECEIVE)(
+  IN      EFI_REST_EX_PROTOCOL   *This,
+  IN      EFI_HTTP_MESSAGE       *RequestMessage,
+  OUT     EFI_HTTP_MESSAGE       *ResponseMessage
+  );
+
+/**
+  Obtain the current time from this REST service instance.
+
+  The GetServiceTime() function is an optional interface to obtain the current time from
+  this REST service instance. If this REST service does not support to retrieve the time,
+  this function returns EFI_UNSUPPORTED. This function must returns EFI_UNSUPPORTED if
+  EFI_REST_EX_SERVICE_TYPE returned in EFI_REST_EX_SERVICE_INFO from GetService() is
+  EFI_REST_EX_SERVICE_UNSPECIFIC.
+
+  @param[in]  This                Pointer to EFI_REST_EX_PROTOCOL instance for a particular
+                                  REST service.
+  @param[out] Time                A pointer to storage to receive a snapshot of the current time of
+                                  the REST service.
+
+  @retval EFI_SUCCESS             operation succeeded.
+  @retval EFI_INVALID_PARAMETER   This or Time are NULL.
+  @retval EFI_UNSUPPORTED         The RESTful service does not support returning the time.
+  @retval EFI_DEVICE_ERROR        An unexpected system or network error occurred.
+  @retval EFI_NOT_READY           The configuration of this instance is not set yet. Configure() must
+                                  be executed and returns successfully prior to invoke this function.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_GET_TIME)(
+  IN      EFI_REST_EX_PROTOCOL   *This,
+  OUT     EFI_TIME               *Time
+  );
+
+/**
+  This function returns the information of REST service provided by this EFI REST EX driver instance.
+
+  The information such as the type of REST service and the access mode of REST EX driver instance
+  (In-band or Out-of-band) are described in EFI_REST_EX_SERVICE_INFO structure. For the vendor-specific
+  REST service, vendor-specific REST service information is returned in VendorSpecifcData.
+  REST EX driver designer is well know what REST service this REST EX driver instance intends to
+  communicate with. The designer also well know this driver instance is used to talk to BMC through
+  specific platform mechanism or talk to REST server through UEFI HTTP protocol. REST EX driver is
+  responsible to fill up the correct information in EFI_REST_EX_SERVICE_INFO. EFI_REST_EX_SERVICE_INFO
+  is referred by EFI REST clients to pickup the proper EFI REST EX driver instance to get and set resource.
+  GetService() is a basic and mandatory function which must be able to use even Configure() is not invoked
+  in previously.
+
+  @param[in]  This                Pointer to EFI_REST_EX_PROTOCOL instance for a particular
+                                  REST service.
+  @param[out] RestExServiceInfo   Pointer to receive a pointer to EFI_REST_EX_SERVICE_INFO structure. The
+                                  format of EFI_REST_EX_SERVICE_INFO is version controlled for the future
+                                  extension. The version of EFI_REST_EX_SERVICE_INFO structure is returned
+                                  in the header within this structure. EFI REST client refers to the correct
+                                  format of structure according to the version number. The pointer to
+                                  EFI_REST_EX_SERVICE_INFO is a memory block allocated by EFI REST EX driver
+                                  instance. That is caller's responsibility to free this memory when this
+                                  structure is no longer needed. Refer to Related Definitions below for the
+                                  definitions of EFI_REST_EX_SERVICE_INFO structure.
+
+  @retval EFI_SUCCESS             EFI_REST_EX_SERVICE_INFO is returned in RestExServiceInfo. This function
+                                  is not supported in this REST EX Protocol driver instance.
+  @retval EFI_UNSUPPORTED         This function is not supported in this REST EX Protocol driver instance.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_EX_GET_SERVICE)(
+  IN   EFI_REST_EX_PROTOCOL      *This,
+  OUT  EFI_REST_EX_SERVICE_INFO  **RestExServiceInfo
+  );
+
+/**
+  This function returns operational configuration of current EFI REST EX child instance.
+
+  This function returns the current configuration of EFI REST EX child instance. The format of
+  operational configuration depends on the implementation of EFI REST EX driver instance. For
+  example, HTTP-aware EFI REST EX driver instance uses EFI HTTP protocol as the undying protocol
+  to communicate with REST service. In this case, the type of configuration is
+  EFI_REST_EX_CONFIG_TYPE_HTTP returned from GetService(). EFI_HTTP_CONFIG_DATA is used as EFI REST
+  EX configuration format and returned to EFI REST client. User has to type cast RestExConfigData
+  to EFI_HTTP_CONFIG_DATA. For those non HTTP-aware REST EX driver instances, the type of configuration
+  is EFI_REST_EX_CONFIG_TYPE_UNSPECIFIC returned from GetService(). In this case, the format of
+  returning data could be non industrial. Instead, the format of configuration data is system/platform
+  specific definition such as BMC mechanism used in EFI REST EX driver instance. EFI REST client and
+  EFI REST EX driver instance have to refer to the specific system /platform spec which is out of UEFI scope.
+
+  @param[in]  This                This is the EFI_REST_EX_PROTOCOL instance.
+  @param[out] RestExConfigData    Pointer to receive a pointer to EFI_REST_EX_CONFIG_DATA.
+                                  The memory allocated for configuration data should be freed
+                                  by caller. See Related Definitions for the details.
+
+  @retval EFI_SUCCESS             EFI_REST_EX_CONFIG_DATA is returned in successfully.
+  @retval EFI_UNSUPPORTED         This function is not supported in this REST EX Protocol driver instance.
+  @retval EFI_NOT_READY           The configuration of this instance is not set yet. Configure() must be
+                                  executed and returns successfully prior to invoke this function.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_EX_GET_MODE_DATA)(
+  IN  EFI_REST_EX_PROTOCOL  *This,
+  OUT EFI_REST_EX_CONFIG_DATA *RestExConfigData
+  );
+
+/**
+  This function is used to configure EFI REST EX child instance.
+
+  This function is used to configure the setting of underlying protocol of REST EX child
+  instance. The type of configuration is according to the implementation of EFI REST EX
+  driver instance. For example, HTTP-aware EFI REST EX driver instance uses EFI HTTP protocol
+  as the undying protocol to communicate with REST service. The type of configuration is
+  EFI_REST_EX_CONFIG_TYPE_HTTP and RestExConfigData is the same format with EFI_HTTP_CONFIG_DATA.
+  Akin to HTTP configuration, REST EX child instance can be configure to use different HTTP
+  local access point for the data transmission. Multiple REST clients may use different
+  configuration of HTTP to distinguish themselves, such as to use the different TCP port.
+  For those non HTTP-aware REST EX driver instance, the type of configuration is
+  EFI_REST_EX_CONFIG_TYPE_UNSPECIFIC. RestExConfigData refers to the non industrial standard.
+  Instead, the format of configuration data is system/platform specific definition such as BMC.
+  In this case, EFI REST client and EFI REST EX driver instance have to refer to the specific
+  system/platform spec which is out of the UEFI scope. Besides GetService()function, no other
+  EFI REST EX functions can be executed by this instance until Configure()is executed and returns
+  successfully. All other functions must returns EFI_NOT_READY if this instance is not configured
+  yet. Set RestExConfigData to NULL means to put EFI REST EX child instance into the unconfigured
+  state.
+
+  @param[in]  This                This is the EFI_REST_EX_PROTOCOL instance.
+  @param[in]  RestExConfigData    Pointer to EFI_REST_EX_CONFIG_DATA. See Related Definitions in
+                                  GetModeData() protocol interface.
+
+  @retval EFI_SUCCESS             EFI_REST_EX_CONFIG_DATA is set in successfully.
+  @retval EFI_DEVICE_ERROR        Configuration for this REST EX child instance is failed with the given
+                                  EFI_REST_EX_CONFIG_DATA.
+  @retval EFI_UNSUPPORTED         This function is not supported in this REST EX Protocol driver instance.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_EX_CONFIGURE)(
+  IN  EFI_REST_EX_PROTOCOL  *This,
+  IN  EFI_REST_EX_CONFIG_DATA RestExConfigData
+  );
+
+/**
+  This function sends REST request to REST service and signal caller's event asynchronously when
+  the final response is received by REST EX Protocol driver instance.
+
+  The essential design of this function is to handle asynchronous send/receive implicitly according
+  to REST service asynchronous request mechanism. Caller will get the notification once the response
+  is returned from REST service.
+
+  @param[in]  This                  This is the EFI_REST_EX_PROTOCOL instance.
+  @param[in]  RequestMessage        This is the HTTP request message sent to REST service. Set RequestMessage
+                                    to NULL to cancel the previous asynchronous request associated with the
+                                    corresponding RestExToken. See descriptions for the details.
+  @param[in]  RestExToken           REST EX token which REST EX Protocol instance uses to notify REST client
+                                    the status of response of asynchronous REST request. See related definition
+                                    of EFI_REST_EX_TOKEN.
+  @param[in]  TimeOutInMilliSeconds The pointer to the timeout in milliseconds which REST EX Protocol driver
+                                    instance refers as the duration to drop asynchronous REST request. NULL
+                                    pointer means no timeout for this REST request. REST EX Protocol driver
+                                    signals caller's event with EFI_STATUS set to EFI_TIMEOUT in RestExToken
+                                    if REST EX Protocol can't get the response from REST service within
+                                    TimeOutInMilliSeconds.
+
+  @retval EFI_SUCCESS               Asynchronous REST request is established.
+  @retval EFI_UNSUPPORTED           This REST EX Protocol driver instance doesn't support asynchronous request.
+  @retval EFI_TIMEOUT               Asynchronous REST request is not established and timeout is expired.
+  @retval EFI_ABORT                 Previous asynchronous REST request has been canceled.
+  @retval EFI_DEVICE_ERROR          Otherwise, returns EFI_DEVICE_ERROR for other errors according to HTTP Status Code.
+  @retval EFI_NOT_READY             The configuration of this instance is not set yet. Configure() must be executed
+                                    and returns successfully prior to invoke this function.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_EX_ASYNC_SEND_RECEIVE)(
+  IN      EFI_REST_EX_PROTOCOL   *This,
+  IN      EFI_HTTP_MESSAGE       *RequestMessage OPTIONAL,
+  IN      EFI_REST_EX_TOKEN      *RestExToken,
+  IN      UINTN                  *TimeOutInMilliSeconds OPTIONAL
+  );
+
+/**
+  This function sends REST request to a REST Event service and signals caller's event
+  token asynchronously when the URI resource change event is received by REST EX
+  Protocol driver instance.
+
+  The essential design of this function is to monitor event implicitly according to
+  REST service event service mechanism. Caller will get the notification if certain
+  resource is changed.
+
+  @param[in]  This                  This is the EFI_REST_EX_PROTOCOL instance.
+  @param[in]  RequestMessage        This is the HTTP request message sent to REST service. Set RequestMessage
+                                    to NULL to cancel the previous event service associated with the corresponding
+                                    RestExToken. See descriptions for the details.
+  @param[in]  RestExToken           REST EX token which REST EX Protocol driver instance uses to notify REST client
+                                    the URI resource which monitored by REST client has been changed. See the related
+                                    definition of EFI_REST_EX_TOKEN in EFI_REST_EX_PROTOCOL.AsyncSendReceive().
+
+  @retval EFI_SUCCESS               Asynchronous REST request is established.
+  @retval EFI_UNSUPPORTED           This REST EX Protocol driver instance doesn't support asynchronous request.
+  @retval EFI_ABORT                 Previous asynchronous REST request has been canceled or event subscription has been
+                                    delete from service.
+  @retval EFI_DEVICE_ERROR          Otherwise, returns EFI_DEVICE_ERROR for other errors according to HTTP Status Code.
+  @retval EFI_NOT_READY             The configuration of this instance is not set yet. Configure() must be executed
+                                    and returns successfully prior to invoke this function.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REST_EX_EVENT_SERVICE)(
+  IN      EFI_REST_EX_PROTOCOL   *This,
+  IN      EFI_HTTP_MESSAGE       *RequestMessage OPTIONAL,
+  IN      EFI_REST_EX_TOKEN      *RestExToken
+);
+
+///
+/// EFI REST(EX) protocols are designed to support REST communication between EFI REST client
+/// applications/drivers and REST services. EFI REST client tool uses EFI REST(EX) protocols
+/// to send/receive resources to/from REST service to manage systems, configure systems or
+/// manipulate resources on REST service. Due to HTTP protocol is commonly used to communicate
+/// with REST service in practice, EFI REST(EX) protocols adopt HTTP as the message format to
+/// send and receive REST service resource. EFI REST(EX) driver instance abstracts EFI REST
+/// client functionality and provides underlying interface to communicate with REST service.
+/// EFI REST(EX) driver instance knows how to communicate with REST service through certain
+/// interface after the corresponding configuration is initialized.
+///
+struct _EFI_REST_EX_PROTOCOL {
+  EFI_REST_SEND_RECEIVE          SendReceive;
+  EFI_REST_GET_TIME              GetServiceTime;
+  EFI_REST_EX_GET_SERVICE        GetService;
+  EFI_REST_EX_GET_MODE_DATA      GetModeData;
+  EFI_REST_EX_CONFIGURE          Configure;
+  EFI_REST_EX_ASYNC_SEND_RECEIVE AyncSendReceive;
+  EFI_REST_EX_EVENT_SERVICE      EventService;
+};
+
+extern EFI_GUID gEfiRestExServiceBindingProtocolGuid;
+extern EFI_GUID gEfiRestExProtocolGuid;
+
+#endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 812be75fb3..5205374d62 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1848,6 +1848,13 @@
   ## Include/Protocol/NvdimmLabel.h
   gEfiNvdimmLabelProtocolGuid               = { 0xd40b6b80, 0x97d5, 0x4282, { 0xbb, 0x1d, 0x22, 0x3a, 0x16, 0x91, 0x80, 0x58 }}
 
+  #
+  # Protocols defined in UEFI2.8
+  #
+  ## Include/Protocol/RestEx.h
+  gEfiRestExProtocolGuid               = { 0x55648b91, 0xe7d, 0x40a3, { 0xa9, 0xb3, 0xa8, 0x15, 0xd7, 0xea, 0xdf, 0x97 }}
+  gEfiRestExServiceBindingProtocolGuid = { 0x456bbe01, 0x99d0, 0x45ea, { 0xbb, 0x5f, 0x16, 0xd8, 0x4b, 0xed, 0xc5, 0x59 }}
+
   #
   # Protocols defined in Shell2.0
   #
-- 
2.17.1