From: "Nickle Wang via groups.io" <nicklew=nvidia.com@groups.io>
To: "devel@edk2.groups.io" <devel@edk2.groups.io>,
Nickle Wang <nicklew@nvidia.com>,
Abner Chang <abner.chang@amd.com>,
Igor Kulchytskyy <igork@ami.com>
Subject: Re: [edk2-devel] [edk2-redfish-client][PATCH] RedfishClientPkg: update Readme.md
Date: Tue, 12 Sep 2023 15:11:20 +0000 [thread overview]
Message-ID: <MW4PR12MB703141D1C6D98B90EF7B889DD9F1A@MW4PR12MB7031.namprd12.prod.outlook.com> (raw)
In-Reply-To: <17842F54FF047469.5496@groups.io>
[-- Attachment #1: Type: text/plain, Size: 121573 bytes --]
Hi @Abner Chang<mailto:abner.chang@amd.com>, @Igor Kulchytskyy<mailto:igork@ami.com>,
I opened a pull request here for the ease of review: https://github.com/tianocore/edk2-redfish-client/pull/50
Thanks,
Nickle
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Nickle Wang
> via groups.io
> Sent: Tuesday, September 12, 2023 11:10 PM
> To: devel@edk2.groups.io
> Cc: Abner Chang <abner.chang@amd.com>; Igor Kulchytskyy <igork@ami.com>
> Subject: [edk2-devel] [edk2-redfish-client][PATCH] RedfishClientPkg: update
> Readme.md
>
> External email: Use caution opening links or attachments
>
>
> Update readme for below topics:
> - The call flow of BIOS Redfish provisioning scenario.
> - The call flow of BIOS Redfish pending settings scenario.
> - The call flow of Redfish feature driver dispatch.
> - Redfish foundation driver stack design.
> - The design of Redfish Platform Config Protocol.
> - The design of synchronization between BIOS and Redfish service.
>
> Signed-off-by: Nickle Wang <nicklew@nvidia.com<mailto:nicklew@nvidia.com>>
> Cc: Abner Chang <abner.chang@amd.com<mailto:abner.chang@amd.com>>
> Cc: Igor Kulchytskyy <igork@ami.com<mailto:igork@ami.com>>
> ---
> .../redfish-call-flow-pending-settings.svg | 58 ++++++
> .../Media/redfish-call-flow-provisioning.svg | 46 +++++
> .../redfish-feature-driver-call-flow.svg | 133 ++++++++++++++
> .../Media/redfish-foundation-driver-stack.svg | 75 ++++++++
> ...redfish-platform-config-protocol-stack.svg | 99 ++++++++++
> .../Media/redfish-synchronization-design.svg | 75 ++++++++
> RedfishClientPkg/Readme.md | 169 ++++++++++++++++--
> 7 files changed, 640 insertions(+), 15 deletions(-)
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-call-flow-
> pending-settings.svg
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-call-flow-
> provisioning.svg
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-feature-
> driver-call-flow.svg
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-foundation-
> driver-stack.svg
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-platform-
> config-protocol-stack.svg
> create mode 100755 RedfishClientPkg/Documents/Media/redfish-
> synchronization-design.svg
>
> diff --git a/RedfishClientPkg/Documents/Media/redfish-call-flow-pending-
> settings.svg b/RedfishClientPkg/Documents/Media/redfish-call-flow-pending-
> settings.svg
> new file mode 100755
> index 00000000..155a5ab3
> --- /dev/null
> +++ b/RedfishClientPkg/Documents/Media/redfish-call-flow-pending-settings.svg
> @@ -0,0 +1,58 @@
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> diff --git a/RedfishClientPkg/Documents/Media/redfish-call-flow-provisioning.svg
> b/RedfishClientPkg/Documents/Media/redfish-call-flow-provisioning.svg
> new file mode 100755
> index 00000000..70556152
> --- /dev/null
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> diff --git a/RedfishClientPkg/Readme.md b/RedfishClientPkg/Readme.md
> index 0aec0580..69dc33d3 100644
> --- a/RedfishClientPkg/Readme.md
> +++ b/RedfishClientPkg/Readme.md
> @@ -31,13 +31,13 @@ Redfish property with HII option.
>
> The current design of UEFI Redfish Client EDK2 Implementation can already
> support the provisioning of firmware-owned platform Redfish resource, however,
> -this requires addtional support on edk2 HII. Therefore, provisioning of
> +this requires additional support on edk2 HII. Therefore, provisioning of
> firmware managed platform Redfish resource would be the second stage.
>
> Below are the block diagrams of UEFI Redfish Client EDK2 Implementation.
>
> ## <a name="[0]">EDK2 Redfish Client Implementation Diagrams</a>
> -
> +
>
> ## EFI EDK2 Redfish Client Framework
> The functionality of each block in the diagrams are described in below sections,
> @@ -89,7 +89,7 @@ Redfish service to platform configurations, or vice versa to
> update platform
> configurations to Redfish service. Both EDK2 Redfish Non-Collection and
> Collection Feature drivers are script auto-generated base on Redfish schema
> naming. The EDK2 Redfish Non-Collection feature driver manages the resource of
> -specific Resdifsh resource type, while the EDK2 Redfish Collection feature
> +specific Redfish resource type, while the EDK2 Redfish Collection feature
> driver manages the members which have the same resource type in collection
> resource (e.g the ComputerSystem resource and ComputerSystemCollection
> resource)
> .
> @@ -100,18 +100,30 @@ platform configuration format and storage from EDK2
> Redfish Feature driver.
> This protocol provides the interfaces to get and set platform configuration with
> the format and configuration storage agnostic to the Redfish feature driver.
> The platform can provide its own EDKII Redfish Platform Config driver instance
> -to access platform-specific configuration format and storage. On EDK2 open
> -source, EDKII Redfish Platform Config Protocol accesses the platform
> -configuration in EDK2 HII defined format.
> +to access platform-specific configuration format and storage.
> +
> +On EDK2 open source, EDKII Redfish Platform Config Protocol accesses the
> +platform configuration in EDK2 HII defined format. Below is driver stack diagram
> +which implements EDKII Redfish Platform Config Protocol. The protocol driver
> +leverages the HII interface to get or set the HII configuration on platform. By
> +following the x-uefi-redfish Configure Language defined in UNI file, protocol
> +driver can find corresponding HII question for given Redfish attribute. In this
> +way, protocol driver creates the mapping between HII questions and Redfish
> +attributes.
> +
> +
>
> Below is the prototype of **EDKII_REDFISH_PLATFORM_CONFIG_PROTOCOL**,
>
> ```C
> struct _EDKII_REDFISH_PLATFORM_CONFIG_PROTOCOL {
> - EDKII_REDFISH_PLATFORM_CONFIG_GET_VALUE GetValue;
> - EDKII_REDFISH_PLATFORM_CONFIG_SET_VALUE SetValue;
> - EDKII_REDFISH_PLATFORM_CONFIG_GET_CONFIG_LANG
> GetConfigureLang;
> - EDKII_REDFISH_PLATFORM_CONFIG_GET_SUPPORTED_SCHEMA
> GetSupportedSchema;
> + UINT64 Revision;
> + EDKII_REDFISH_PLATFORM_CONFIG_GET_VALUE GetValue;
> + EDKII_REDFISH_PLATFORM_CONFIG_SET_VALUE SetValue;
> + EDKII_REDFISH_PLATFORM_CONFIG_GET_DEFAULT_VALUE
> GetDefaultValue;
> + EDKII_REDFISH_PLATFORM_CONFIG_GET_ATTRIBUTE GetAttribute;
> + EDKII_REDFISH_PLATFORM_CONFIG_GET_CONFIG_LANG
> GetConfigureLang;
> + EDKII_REDFISH_PLATFORM_CONFIG_GET_SUPPORTED_SCHEMA
> GetSupportedSchema;
> };
> ```
>
> @@ -181,11 +193,10 @@ x-uefi-redfish-Processor.v1_0_0
> ```
> #### x-uefi-redfish Configure Language format:
> - The string declared with x-uefi-redfish configure language is a path to the
> property
> -in Redfish resource
> +in Redfish schema.
> - The root of path is the Redfish resource type indicated in x-uefi-redfish
> configure
> language
> -- The path is relative to root of Redfish resource type, not related to Redfish
> service
> -- root.
> +- The path is relative to root of [Redfish
> schema](https://redfish.dmtf.org/redfish/schema_index) defined by DMTF, not
> related to Redfish service root.
>
> #### Examples,
> ```C
> @@ -215,7 +226,135 @@ EDK2 Build is responsible to pull the necessary EDK2
> Redfish JSON Schema to C
> Structure Convertors and EDK2 Redfish Feature drivers into edk2 build process
> according to the x-uefi-Redfish config language used in the HII VFR forms.
>
> +## EDK2 Redfish client feature driver
> +
> +
> +Above diagram shows the way how Redfish application (Redfish feature driver)
> works with Redfish foundation
> +drivers and communicate with Redfish service. Redfish feature driver relies on
> Redfish Config driver to
> +provide the information of desired Rest Ex instance. To achieve this, Redfish
> feature driver has to provide
> +EDKII Redfish Config Handler Protocol and Redfish Config driver will use this
> protocol to deliver Redfish
> +service information.
> +
> +```C
> +struct _EDKII_REDFISH_CONFIG_HANDLER_PROTOCOL {
> + EDKII_REDFISH_CONFIG_HANDLER_PROTOCOL_INIT Init;
> + EDKII_REDFISH_CONFIG_HANDLER_PROTOCOL_STOP Stop;
> +};
> +```
> +
> +
> +
> +Above diagram shows the details of how Redfish feature core driver invokes
> Redfish feature drivers. To be called
> +by Redfish feature core driver, Redfish feature driver has to register the managed
> URI to Redfish feature core
> +driver. Then Redfish feature core driver learns the dependency of each different
> feature drivers.
> +
> +#### Dispatch Redfish feature drivers
> +When given event is signaled, Redfish feature core driver starts the operation of
> invoking Redfish feature drivers
> +by following the order from left to right in Redfish URI list. In the diagram, the
> feature driver which manages
> +service root will be invoked first. And feature driver which manages computer
> system collection will be invoked
> +at second position. Once Redfish feature core driver walks through entire Redfish
> URI, the operation is stopped.
> +
> +### Interface between collection feature driver and non-collection feature driver
> +Redfish collection resource is a set of Redfish non-collection resource. Redfish
> collection feature driver works
> +with non-collection feature driver to manage them. For example, boot option
> collection feature driver work with
> +boot option feature driver to manage boot options in Redfish service. Computer
> system collection feature driver
> +work with computer system feature driver to manage computer system
> resource.
> +
> +The interface between collection feature driver and non-collection feature driver
> is EDKII Redfish resource config
> +protocol.
> +
> +```C
> +struct _EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL {
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_PROVISIONING
> Provisioning;
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_CONSUME Consume;
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_UPDATE Update;
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_CHECK Check;
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_IDENTIFY Identify;
> + EDKII_REDFISH_RESOURCE_CONFIG_PROTOCOL_GET_INFO GetInfo;
> +};
> +```
> +
> +### Feature driver event
> +Two events are defined for feature driver to perform necessary operation at
> given time.
> +- Ready-to-Provisioning event
> + - Feature driver which requires to do operation before Redfish feature driver
> starts the synchronization can listen to
> + this event. For example, boot option feature driver may want to refresh boot
> order variable and get latest boot order
> + information before provisioning the boot options to boot options resource.
> +- After-Provisioning event
> + - Feature driver which wants to do operation after Redfish feature driver finish
> the synchronization job can listen to
> + this event.
> +
> +### Reboot required
> +When Redfish feature drivers apply user request to platform, a system reboot is
> usually required. PCD
> `gEfiRedfishClientPkgTokenSpaceGuid.PcdRedfishSystemRebootRequired` is
> introduced for this purpose. After Redfish feature
> +core driver is done with synchronization job, Redfish feature core driver checks
> this PCD and perform system reboot when
> +PCD is set to `TRUE`.
> +
> +### Synchronization design between Redfish service and BIOS
> +The purpose of Redfish feature driver is to do the synchronization job between
> Redfish service and BIOS. The operation of synchronization can be simply divided
> into two types:
> +
> +#### Provisioning resource
> +Below is the flow diagram of provisioning platform configuration to Redfish
> service at Bios resource. With the x-uefi-redfish
> +configure language described in above section, Redfish feature driver collect all
> BIOS attributes from HII database and populated
> +them to Redfish service.
> +
> +
> +#### Consume resource
> +Below is the flow diagram of consuming user request from Redfish service to
> platform configuration. Redfish feature driver finds
> +corresponding HII question and apply user desired value to platform.
> +
> +
> +Below diagram shows the call flow of EDKII Resource Config Protocol and how to
> use this protocol to handle synchronization
> +job.
> +
> +
> +Several interfaces defined in EDKII Redfish Resource Config Protocol work
> together to support Redfish synchronization:
> +- Identify()
> + - This function is used to check and see if given Redfish resource is the one
> feature driver wants to manage. A platform
> + library `RedfishReesourceIdentifyLib` is introduced for platform to implement
> its own policy to identify Redfish resource.
> +- Check()
> + - This function is used to check the attribute status on Redfish service. If all
> attributes that feature driver managed
> + are presented in Redfish service, feature driver must provision them already.
> Otherwise, Provisioning() will be called
> + to perform resource provisioning job.
> +- Provisioning()
> + - When this function is called, feature driver will provision all attributes that it
> managed to Redfish service. This
> + operation usually create new resource at Redfish service and require different
> operation that Redfish service specified.
> +- Consume()
> + - When there is pending settings in Redfish service, this function is called for
> feature driver to consume pending settings
> + requested by user.
> +- Update()
> + - When platform configuration is updated, this function is called to update
> configuration changes to Redfish service and
> + Redfish service can show the latest settings on platform.
> +
> +The EDKII Redfish Resource Addendum Protocol is introduced to provide
> platform addendum data that Redfish service requires.
> +This protocol will be called at Provisioning() and Update() functions so platform
> can add OEM attribute or any other attribute
> +that Redfish service specified.
> +
> +```C
> +struct _EDKII_REDFISH_RESOURCE_ADDENDUM_PROTOCOL {
> + UINT64 Revision; ///< Protocol revision
> + EDKII_REDFISH_RESOURCE_ADDENDUM_OEM GetOemData; ///< Get
> OEM data
> + EDKII_REDFISH_RESOURCE_ADDENDUM_DATA GetData; ///< Get
> addendum data
> +};
> +```
> +
> +#### Redfish service implementation
> +The idea of Redfish synchronization design is to manage Redfish resource
> directly by platform firmware. To do this, Redfish
> +synchronization functions have to work with Redfish service implementation in
> BMC firmware. This is because the interface
> +between platform firmware and BMC firmware is not defined in any
> specification.
> +Several prerequisites must be satisfied:
> +- Platform firmware has permission to manage Redfish resource. BMC has ability
> to tell the difference between platform request
> + and out-of-band user. This can normally be done by identifying the bootstrap
> account in HTTP request. The bootstrap account is
> + described in Host Interface specification 1.3.0 section 9.
> +- The ability to tell if there is user changes to Redfish resource or not. Redfish
> feature drivers can only be executed at POST
> + time. So the modification to BIOS managed resource is asynchronous
> operation. Thus, we need below supports in Redfish service:
> + - ETAG support in HTTP header.
> + - Setting resource support (defined in Redfish specification 1.18 section 9.10).
> + - Redfish Task support to POST and DELETE operation made by user in Redfish
> collection resource and Redfish actions.
> +
> +### Redfish Task design
> +TBD.
> +
> ## The Contributors
> -Chang, Abner <abner.chang@hpe.com>\
> -Wang, Nickle <nickle.wang@hpe.com>\
> +Chang, Abner <abner.chang@amd.com>\
> +Wang, Nickle <nicklew@nvidia.com>\
> Chen, Aaron <aaron.chen@hpe.com>
> --
> 2.17.1
>
>
>
>
>
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next parent reply other threads:[~2023-09-12 15:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <17842F54FF047469.5496@groups.io>
2023-09-12 15:11 ` Nickle Wang via groups.io [this message]
2023-09-12 15:09 [edk2-devel] [edk2-redfish-client][PATCH] RedfishClientPkg: update Readme.md Nickle Wang via groups.io
2023-09-14 4:48 ` Chang, Abner via groups.io
2023-10-03 12:03 ` Nickle Wang via groups.io
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