netdev - Re: [RFC v1 for accelerated IPoIB 04/25] IB/verb: Add ipoib

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Message-ID: <20170314161149.GA15752@obsidianresearch.com>
Date:   Tue, 14 Mar 2017 10:11:49 -0600
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     "Vishwanathapura, Niranjana" <niranjana.vishwanathapura@...el.com>
Cc:     Erez Shitrit <erezsh@...lanox.com>, dledford@...hat.com,
        linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        valex@...lanox.com, leonro@...lanox.com, saedm@...lanox.com,
        erezsh@....mellanox.co.il
Subject: Re: [RFC v1 for accelerated IPoIB 04/25] IB/verb: Add ipoib_options
 struct and API

On Tue, Mar 14, 2017 at 12:01:09AM -0700, Vishwanathapura, Niranjana wrote:
> On Mon, Mar 13, 2017 at 02:01:36PM -0600, Jason Gunthorpe wrote:
> >>+	/* multicast */
> >>+	int (*attach_mcast)(struct net_device *dev, struct ib_device *hca,
> >>+			    union ib_gid *gid, u16 lid, int set_qkey);
> >>+	int (*detach_mcast)(struct net_device *dev, struct ib_device *hca,
> >>+			    union ib_gid *gid, u16 lid);
> >
> >It would make more sense to store the struct ib_device pointer in the
> >struct rdma_netdev.
> >
> 
> Agree that it shouldn't be a function parameters.
> For opa_vnic, I found it convenient to store ib_device pointer in client and
> device private structures as those will be available in most places anyhow.

If vnic uses it too, then lets add the ib_device and port num to
rdma_netdev itself?

Jason