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Post by carsonlab on Jul 9, 2024 1:02:13 GMT
Greetings,
DSP2054 makes mention of the MAC layer and it includes modeling of MAC elements, but none of the components seem to have PLDM support for the MAC address.
I checked through the other PLDM specs and did not see any mention of MAC address support.
Is this in fact already supported? Is it something that can be added?
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Post by pmschoeller on Jul 30, 2024 16:37:29 GMT
We have received your query and have discussed in the PMCI Working Group. I apologize for the delayed response but I have been on / off vacation and I forgot to reply to this request.
The MAC address is a constant / static value that is not in the scope of a PLDM Sensor. Typically, static values related to a "Field Replaceable Unit(FRU)" device are in a "Non-Volatile Memory (NVM)" storage. DSP0257 PLDM for FRU is the only PLDM Specification where the MAC Address could be declared as part of a Network Port.
PLDM is not a Network Interface Controller (NIC) specific manageability protocol, like the DSP0222 NC-SI Base Specification. The expectation is that the requester will blend the data from the DSP0222 NC-SI Specification along with the "Sensor Model" from PLDM. The DSP0222 NC-SI Base Specification command, Get Parameters command (0x17), is a method for obtaining MAC addresses for a Port (Channel) on a device. A newly added DSP0222 command, Get Partition Configuration command (0x2B), also can provide MAC addresses for physical / virtual "NIC Function".
In closing, MAC Addresses can be dynamically made visible or hidden if a network device support "virtual functions". A physical port could have multiple MAC Addresses defined. PLDM is more of a "generic" Data Model that transcends specific technologies such as Networking, Storage, GPU, etc. To add a "FRU Record" for just the PORT to get the MAC address, which can be obtained using NC-SI Protocol, adds complexity such as a PDR, a new PLDM for FRU Field Definition, etc. You may want to discuss with your Network Device supplier if they would support adding a "FRU Record" just for the MAC address to the DSP2054 PLDM NIC Sensor Model technology paper. All of the major Network Adapter suppliers are members of the PMCI WG.
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