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 06:52:19PM +0000, Wan, Kaike wrote:
> > From: Jason Gunthorpe [mailto:jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org]
> > Sent: Thursday, June 11, 2015 2:47 PM
> > To: Wan, Kaike
> > Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; Fleck, John; Weiny, Ira
> > Subject: Re: [PATCH v5 1/1] ibacm: Add support for pathrecord query
> > through netlink
> > 
> > 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.
> 
> Then I will define all mandatory attribute types and check against them on the user space side.

You need to handle the case where a new kernel gains a new mandatory
attribute type. A list in user space does not seem to handle that.

Jason
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