Infiniband Subnet Manager protocol specification

Infiniband Subnet Manager protocol specification

[Greg Rose]

Greetings all,

I am currently writing a Infiniband SW overlay driver for our RDMA
"like" network switches and HBA controllers.  I've gotten everything to
the point where I am getting SM 'get' requests that I know my
'process_mad' function is supposed to handle but I cannot for the life
of me find the protocol specification for Subnet Manager MAD packets.

I'm using opensm for the subnet manager and as of now it always reports
missing SM master.  I gather that is because I'm not handling the
packets that come in that need MAD processing correctly.

Googling for "Infiniband Subnet Manager protocol specification" is not
turning up anything useful.

If there is a better search term, or if there is a pointer to the
specification that someone can provide I'd be very grateful.

Thanks,

- Greg Rose


--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Infiniband Subnet Manager protocol specification

[Hal Rosenstock]

Hi Greg,

On 4/4/2017 3:06 PM, Greg Rose wrote:
> Greetings all,
> 
> I am currently writing a Infiniband SW overlay driver for our RDMA
> "like" network switches and HBA controllers.  I've gotten everything to
> the point where I am getting SM 'get' requests that I know my
> 'process_mad' function is supposed to handle but I cannot for the life
> of me find the protocol specification for Subnet Manager MAD packets.
> 
> I'm using opensm for the subnet manager and as of now it always reports
> missing SM master.  I gather that is because I'm not handling the
> packets that come in that need MAD processing correctly.
> 
> Googling for "Infiniband Subnet Manager protocol specification" is not
> turning up anything useful.
> 
> If there is a better search term, or if there is a pointer to the
> specification that someone can provide I'd be very grateful.

You can find all the details in IBTA (InfiniBand Trade Association)
version 1.3 volume 1. SM class MADs are found in chapter 14.

-- Hal

> Thanks,
> 
> - Greg Rose
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Infiniband Subnet Manager protocol specification

[Greg Rose]

On Tue, 2017-04-04 at 15:14 -0400, Hal Rosenstock wrote:
> Hi Greg,
> 
> On 4/4/2017 3:06 PM, Greg Rose wrote:
> > Greetings all,
> > 
> > I am currently writing a Infiniband SW overlay driver for our RDMA
> > "like" network switches and HBA controllers.  I've gotten everything to
> > the point where I am getting SM 'get' requests that I know my
> > 'process_mad' function is supposed to handle but I cannot for the life
> > of me find the protocol specification for Subnet Manager MAD packets.
> > 
> > I'm using opensm for the subnet manager and as of now it always reports
> > missing SM master.  I gather that is because I'm not handling the
> > packets that come in that need MAD processing correctly.
> > 
> > Googling for "Infiniband Subnet Manager protocol specification" is not
> > turning up anything useful.
> > 
> > If there is a better search term, or if there is a pointer to the
> > specification that someone can provide I'd be very grateful.
> 
> You can find all the details in IBTA (InfiniBand Trade Association)
> version 1.3 volume 1. SM class MADs are found in chapter 14.

Oh boy... that's a fat spec!

But it seems to have what I need.  Looks like I have some reading to do.

Thank you very much!

- Greg

> 
> -- Hal
> 
> > Thanks,
> > 
> > - Greg Rose
> > 
> > 
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > 



--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html