Does openbmc implement NC-SI over MCTP over SMBus to obtain information?

Does openbmc implement NC-SI over MCTP over SMBus to obtain information?

[www]

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Dear all,


Does openbmc implement NC-SI over MCTP over SMBus to obtain information? 


thanks,
Byron

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Re: Does openbmc implement NC-SI over MCTP over SMBus to obtain information?

[Andrew Jeffery]

On Sat, 6 Feb 2021, at 19:03, www wrote:
> Dear all,
> 
> Does openbmc implement NC-SI over MCTP over SMBus to obtain information? 

Unfortunately not. There is an out-of-tree implementation of the SMBus MCTP 
binding, but that needs some effort put into it for it to go anywhere. We're 
likely to see a socket-based AF_MCTP implementation before SMBus support is 
merged in libmctp for the purposes of OpenBMC.

I haven't yet heard of anyone running NC-SI over MCTP so you might be breaking 
new ground on that front too :)

Cheers,

Andrew

Re: Does openbmc implement NC-SI over MCTP over SMBus to obtain information?

[Patrick Williams]

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On Tue, Feb 09, 2021 at 11:11:57AM +1030, Andrew Jeffery wrote:
> 
> 
> On Sat, 6 Feb 2021, at 19:03, www wrote:
> > Dear all,
> > 
> > Does openbmc implement NC-SI over MCTP over SMBus to obtain information? 
> 
> Unfortunately not. There is an out-of-tree implementation of the SMBus MCTP 
> binding, but that needs some effort put into it for it to go anywhere. We're 
> likely to see a socket-based AF_MCTP implementation before SMBus support is 
> merged in libmctp for the purposes of OpenBMC.
> 
> I haven't yet heard of anyone running NC-SI over MCTP so you might be breaking 
> new ground on that front too :)

CCing Ben and Amithash.  I think we added some code recently on top of
the Intel-BMC/libmctp to talk to an NC-SI NIC.

-- 
Patrick Williams

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RE: Does openbmc implement NC-SI over MCTP over SMBus to obtain information?

[Ben Wei]

> On Tue, Feb 09, 2021 at 11:11:57AM +1030, Andrew Jeffery wrote:
> > 
> > 
> > On Sat, 6 Feb 2021, at 19:03, www wrote:
> > > Dear all,
> > > 
> > > Does openbmc implement NC-SI over MCTP over SMBus to obtain information? 
> > 
> > Unfortunately not. There is an out-of-tree implementation of the SMBus MCTP 
> > binding, but that needs some effort put into it for it to go anywhere. We're 
> > likely to see a socket-based AF_MCTP implementation before SMBus support is 
> > merged in libmctp for the purposes of OpenBMC.
> > 
> > I haven't yet heard of anyone running NC-SI over MCTP so you might be breaking 
> > new ground on that front too :)
>
> CCing Ben and Amithash.  I think we added some code recently on top of
> the Intel-BMC/libmctp to talk to an NC-SI NIC.

We're using Intel-BMC/libmctp stack to enable PLDM firmware update over MCTP so we can support out-of-band firmware update.
We currently don't have any use cases for NC-SI traffic over MCTP so we haven't try to enable this.

-Ben