Unsupported BMC Functionalities in NIC Mode

Sensors and SDRs

DPU sensors:

• bluefield_temp

• ddr_temp

• p0_temp

• p0_link

• p1_temp (if present)

• p1_link (if present)

• rtc_voltage

• power_envelope

• soc_power

More generally, any sensor/FRU is retrievable via ipmitool -I ipmb sdr list all.

Impact: Redfish "Sensors" schema and IPMItool outputs like ipmitool sensors and ipmitool sdr.

• BMC Sensor Data

Network interfaces

DPU network ports:

• eth0

• eth1 (if present)

• oob0

Impact:

• Redfish schemas –redfish/v1/Chassis/Card1/NetworkAdapters/NvidiaNetworkAdapter/redfish/v1/Systems/Bluefield/EthernetInterfaces/

• BlueField Host Network Interface

Firmware inventory

Objects with prefix DPU_* do not show Version in the Redfish FirmwareInventory schema

• System Inventory

Card1 schema

Redfish Chassis Card1 schema: Information like manufacturer, model, versions, and assemblies from BlueField FRU is affected. 

• DPU Chassis

FRU

DPU FRU files: Extracted using IPMB. Affects FRU 0 on the BMC, OEM FRU, and functionalities using BlueField FRU.

OEM FRU entries: dmidecode reads fail, leading to default values.

Bmc-set-time.service

Affected. The service syncs BMC time with DPUs when BMC NTP is unavailable.

N/A

Arm OS soft/graceful reset

All of the following reset/set off the Arm OS:
IPMItool:
ipmitool raw 0x32 0xA1 0x02 and ipmitool power soft
Redfish:
redfish/v1/Systems/Bluefield/Actions/ComputerSystem.Reset -d {"ResetType": "GracefulShutdown"}.

Redfish system logs

Missing DPU OS logs: 

• /var/log/dmesg

• /var/log/lastlog

• /var/log/wtmp

Base GUID, base MAC, and description from Redfish OEM

Fields in Systems/Bluefield/Oem/Nvidia Redfish schema are affected as they depend on IPMB.