netdev - Re: [PATCH RFC iproute2-next 1/2] rdma: add 'link add/delete' commands

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Date:   Wed, 28 Nov 2018 15:25:58 -0700
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Steve Wise <swise@...ngridcomputing.com>
Cc:     Leon Romanovsky <leon@...nel.org>, dsahern@...il.com,
        stephen@...workplumber.org, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, BMT@...ich.ibm.com
Subject: Re: [PATCH RFC iproute2-next 1/2] rdma: add 'link add/delete'
 commands

On Wed, Nov 28, 2018 at 04:21:48PM -0600, Steve Wise wrote:

> >> It does make sense to not require type.  The name must be unique so that
> >> should be enough.  I'll have to respin the kernel side though...
> > The delete_link really should be an operation on the ib_device, not
> > the link_ops thing. 
> >
> > That directly prevents mis-matching function callbacks..
> >
> > Jason
> Looking at the rtnetlink newlink/dellink, I see they cache the link_ops
> ptr in the net_device struct.  So when the link is deleted, then
> appropriate driver-specific dellink function can be called after finding
> the device to be deleted.  Should I do something along these lines?  IE
> add a struct rdma_link_ops pointer to struct ib_device.

I don't see a problem with that either..

Jason