[Design] how to find BMC exposed NIC in BIOS? about edk2-redfish-client-deprecated

[changab]

1. Locate all EFI Device Path Protocol
2. Check if both USB device path and MAC device path specified in the EFI Device Path
   • If yes, get the MAC address from EFI Device Path
3. Go through all IPMI channels,
   • Send IPMI NetFn: Net Parameter selector:5 Get MAC address)
4. Compare the MAC address specified in EFI Device Path ( Step 2) and the one retrieved via step 4.
   • If matched, this is the USB NIC exposed by BMC.

[nicklela]

We probably still use MAC address because network protocol can only provide MAC address of NIC. MAC address is defined in Host Interface specification so we can use this.

[nicklela]

action item: OpenBMC may not have implementation of "Serial Number" or "MAC Address"

[nicklela]

action: check and see if vendor id and product id can be retrieved from standard IPMI command or not.