Re: [PATCH v5 1/1] ibacm: Add support for pathrecord query through netlink

[Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>]

On Thu, Jun 11, 2015 at 06:31:53PM +0000, Wan, Kaike wrote:
> 1. all mandatory attributes must be present in the
> message. Otherwise, the request is invalid.

All mandatory attributes that are present must be supported or the
user space side cannot answer the request.

> 2. Optional attributes are optional. If they are absent, it is
> fine. If they are present, they can still be ignored, depending on
> the application.

Yes

> Then what are the mandatory attributes: sgid, dgid, slid, dlid,
> pkey, reversise, qos, mtu, rate, or anything related to the
> pathrecord selection (can be used to set comp_mask during a query)?

Yes
 
> What are the optional attributes?

Future policy decision items, like the net device the query is being
made on behalf of, or the in-kernel ULP, etc.

Jason
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