From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: "ira.weiny" <ira.weiny@intel.com>
Cc: Michael Wang <yun.wang@profitbricks.com>,
Roland Dreier <roland@kernel.org>,
Sean Hefty <sean.hefty@intel.com>,
Hal Rosenstock <hal.rosenstock@gmail.com>,
linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nfs@vger.kernel.org, netdev@vger.kernel.org,
"J. Bruce Fields" <bfields@fieldses.org>,
Trond Myklebust <trond.myklebust@primarydata.com>,
"David S. Miller" <davem@davemloft.net>,
Or Gerlitz <ogerlitz@mellanox.com>,
Moni Shoua <monis@mellanox.com>,
PJ Waskiewicz <pj.waskiewicz@solidfire.com>,
Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>,
Yan Burman <yanb@mellanox.com>,
Jack Morgenstein <jackm@dev.mellanox.co.il>,
Bart Van Assche <bvanassche@acm.org>,
Yann Droneaud <ydroneaud@opteya.com>,
Colin Ian King <colin.king@canonical.com>,
Majd Dibbiny <majd@mellanox.com>, Jiri Kosina <jkosina@suse.cz>,
Matan Barak <matanb@mellanox.com>, Alex Estrin <alex.
Subject: Re: [RFC PATCH 08/11] IB/Verbs: Use management helper has_iwarp() for, iwarp-check
Date: Fri, 27 Mar 2015 11:29:12 -0600 [thread overview]
Message-ID: <20150327172912.GA28901@obsidianresearch.com> (raw)
In-Reply-To: <20150327171631.GC27862@phlsvsds.ph.intel.com>
On Fri, Mar 27, 2015 at 01:16:31PM -0400, ira.weiny wrote:
> On Fri, Mar 27, 2015 at 10:13:19AM -0600, Jason Gunthorpe wrote:
> > On Fri, Mar 27, 2015 at 04:47:36PM +0100, Michael Wang wrote:
> > >
> > > Introduce helper has_iwarp() to help us check if an IB device
> > > support IWARP protocol.
> >
> > Should probably be !has_rdma_read_sges()
> >
> > True if the device can handle more than one SGE entry on a RDMA READ
> > work request.
>
> Isn't this value already provided by the query_device verb?
>
> The verbs spec states the Query HCA contains the:
>
> "Maximum number of scatter/gather entries per Work Request supported by the
> HCA."
http://www.spinics.net/lists/linux-rdma/msg22565.html
''Unlike IB, the iWARP protocol only allows 1 target/sink SGE in an
rdma read''
It is one of those annoying verbs is different on iWarp things.
So the max sge in the query_verbs must only apply to send/rdma write
on iWarp?
Jason
next prev parent reply other threads:[~2015-03-27 17:29 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-27 15:39 [RFC PATCH 00/11] IB/Verbs: IB Management Helpers Michael Wang
2015-03-27 15:42 ` [RFC PATCH 02/11] IB/Verbs: Use management helper tech_iboe() for iboe-check Michael Wang
2015-03-30 16:17 ` Doug Ledford
[not found] ` <1427732250.21101.202.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-30 16:23 ` Michael Wang
2015-03-27 15:43 ` [RFC PATCH 03/11] IB/Verbs: Use management helper has_mad() for mad-check Michael Wang
2015-03-27 15:44 ` [RFC PATCH 04/11] IB/Verbs: Use management helper cap_smi() for smi-check Michael Wang
[not found] ` <55157AEB.7020705-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-27 16:32 ` Jason Gunthorpe
[not found] ` <20150327163219.GD28412-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-27 16:59 ` Yun Wang
2015-03-27 15:45 ` [RFC PATCH 05/11] IB/Verbs: Use management helper has_cm() for cm-check Michael Wang
[not found] ` <551579CA.4030901-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-27 15:40 ` [PATCH 01/11] IB/Verbs: Use helpers to check transport and link layer Michael Wang
2015-03-30 15:56 ` Doug Ledford
[not found] ` <1427730964.21101.195.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-30 16:14 ` Michael Wang
2015-03-30 16:22 ` Doug Ledford
[not found] ` <1427732576.21101.205.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-30 17:04 ` Michael Wang
2015-03-27 15:46 ` [RFC PATCH 06/11] IB/Verbs: Use management helper has_sa() and cap_sa(), for sa-check Michael Wang
2015-03-27 16:47 ` ira.weiny
2015-03-27 17:13 ` Yun Wang
2015-03-27 19:49 ` Doug Ledford
[not found] ` <55157B43.6060507-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-30 16:16 ` Doug Ledford
2015-03-30 16:42 ` Michael Wang
2015-03-30 17:02 ` Doug Ledford
[not found] ` <1427734923.21101.227.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-31 13:22 ` Michael Wang
2015-03-31 23:12 ` Jason Gunthorpe
[not found] ` <20150331231202.GA20094-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-04-01 0:51 ` ira.weiny
[not found] ` <20150401005113.GA15327-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-04-01 1:31 ` Jason Gunthorpe
2015-03-27 15:46 ` [RFC PATCH 07/11] IB/Verbs: Use management helper has_mcast() and, cap_mcast() for mcast-check Michael Wang
[not found] ` <55157B71.6040505-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-27 16:28 ` Jason Gunthorpe
2015-03-27 17:05 ` ira.weiny
[not found] ` <20150327170508.GB27862-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-03-27 17:31 ` Yun Wang
2015-03-27 17:49 ` Jason Gunthorpe
2015-03-27 18:09 ` Yun Wang
2015-03-27 17:47 ` Jason Gunthorpe
[not found] ` <20150327174727.GB28901-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-30 8:30 ` Michael Wang
[not found] ` <551909AC.2030304-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-30 22:33 ` Jason Gunthorpe
2015-03-30 16:11 ` Doug Ledford
2015-03-30 16:20 ` Michael Wang
2015-03-30 23:47 ` ira.weiny
[not found] ` <20150330234717.GA28446-W4f6Xiosr+yv7QzWx2u06xL4W9x8LtSr@public.gmane.org>
2015-03-31 7:25 ` Michael Wang
2015-03-27 15:47 ` [RFC PATCH 08/11] IB/Verbs: Use management helper has_iwarp() for, iwarp-check Michael Wang
2015-03-27 16:13 ` Jason Gunthorpe
[not found] ` <20150327161319.GB28412-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-27 16:17 ` Michael Wang
2015-03-27 17:16 ` ira.weiny
2015-03-27 17:29 ` Jason Gunthorpe [this message]
[not found] ` <20150327172912.GA28901-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-30 15:10 ` Michael Wang
[not found] ` <55196754.5010600-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-30 22:35 ` Jason Gunthorpe
[not found] ` <20150330223528.GB27728-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-31 7:39 ` Michael Wang
[not found] ` <551A4F24.6090405-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-31 11:19 ` Tom Talpey
2015-03-31 11:41 ` Michael Wang
[not found] ` <551A87D3.2070306-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
2015-03-31 13:56 ` Tom Talpey
2015-03-31 13:58 ` Michael Wang
2015-03-27 17:35 ` Yun Wang
2015-03-30 16:13 ` Doug Ledford
[not found] ` <1427731980.21101.199.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-03-30 16:21 ` Michael Wang
2015-03-31 23:20 ` Jason Gunthorpe
2015-03-27 15:48 ` [RFC PATCH 09/11] IB/Verbs: Use management helper has_ipoib() and, cap_ipoib() for ipoib-check Michael Wang
2015-03-27 16:06 ` Jason Gunthorpe
[not found] ` <20150327160616.GA28412-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-03-27 16:15 ` Michael Wang
2015-03-27 16:38 ` Jason Gunthorpe
2015-03-27 15:49 ` [RFC PATCH 10/11] IB/Verbs: Use management helper cap_ib() for ib-check Michael Wang
2015-03-27 15:49 ` [RFC PATCH 11/11] IB/Verbs: Use management helper cap_eth() for eth-check Michael Wang
2015-04-06 20:22 ` [RFC PATCH 00/11] IB/Verbs: IB Management Helpers ira.weiny
2015-04-07 7:31 ` Michael Wang
2015-04-07 12:48 ` Michael Wang
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