From: "Liu, Changcheng" <changcheng.liu@intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org
Subject: Re: why ibv_wc src_qp is zero
Date: Wed, 21 Aug 2019 20:30:22 +0800 [thread overview]
Message-ID: <20190821123021.GA2270@jerryopenix> (raw)
In-Reply-To: <20190821122554.GA8653@ziepe.ca>
On 09:25 Wed 21 Aug, Jason Gunthorpe wrote:
> On Wed, Aug 21, 2019 at 08:14:36PM +0800, Liu, Changcheng wrote:
> > Hi all,
> > Does anyone know the usage of the src_qp field in struct ibv_wc?
> >
> > I’m using RC transport type with only Send Operation on Send Queue.
> > On the requester side, when SQ WR is finished, there’s one WCE is on CQ. ibv_wc::src_qp is checked with zero value.
> > On the responder side, when RQ WR is finished, there’s one WCE is on CQ. ibv_wc::src_qp is checked with zero value too.
> > Why the ibv_wc::src_qp field is zero instead of recording the peer's qp number?
>
> It is only supported for UD QPs
Thanks a lot for your info. I'll check it the protocol.
--Thanks
Changcheng
>
> Jason
prev parent reply other threads:[~2019-08-21 12:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 12:14 why ibv_wc src_qp is zero Liu, Changcheng
2019-08-21 12:25 ` Jason Gunthorpe
2019-08-21 12:30 ` Liu, Changcheng [this message]
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