From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
Cc: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org,
bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org,
axboe-b10kYP2dOMg@public.gmane.org,
linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 3/9] IB: add a helper to safely drain a QP
Date: Sat, 14 Nov 2015 08:05:31 +0100 [thread overview]
Message-ID: <20151114070531.GC27738@lst.de> (raw)
In-Reply-To: <56460CC4.3030001-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
On Fri, Nov 13, 2015 at 10:16:04AM -0600, Steve Wise wrote:
> So how can we do this for iwarp? It seems like all that might be needed is
> to modify the QP state to idle, retrying until it succeeds:
>
> If the QP is transitioning to the Error state, or has not yet
> finished flushing the Work Queues, a Modify QP request to transition
> to the IDLE state MUST fail with an Immediate Error. If none of the
> prior conditions are true, a Modify QP to the Idle state MUST take
> the QP to the Idle state. No other state transitions out of Error
> are supported. Any attempt to transition the QP to a state other
> than Idle MUST result in an Immediate Error.
Can you try to write up some code for this? We could then wire it up
in the common helper.
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Steve Wise <swise@opengridcomputing.com>
Cc: Christoph Hellwig <hch@lst.de>,
linux-rdma@vger.kernel.org, sagig@dev.mellanox.co.il,
bart.vanassche@sandisk.com, axboe@fb.com,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/9] IB: add a helper to safely drain a QP
Date: Sat, 14 Nov 2015 08:05:31 +0100 [thread overview]
Message-ID: <20151114070531.GC27738@lst.de> (raw)
In-Reply-To: <56460CC4.3030001@opengridcomputing.com>
On Fri, Nov 13, 2015 at 10:16:04AM -0600, Steve Wise wrote:
> So how can we do this for iwarp? It seems like all that might be needed is
> to modify the QP state to idle, retrying until it succeeds:
>
> If the QP is transitioning to the Error state, or has not yet
> finished flushing the Work Queues, a Modify QP request to transition
> to the IDLE state MUST fail with an Immediate Error. If none of the
> prior conditions are true, a Modify QP to the Idle state MUST take
> the QP to the Idle state. No other state transitions out of Error
> are supported. Any attempt to transition the QP to a state other
> than Idle MUST result in an Immediate Error.
Can you try to write up some code for this? We could then wire it up
in the common helper.
next prev parent reply other threads:[~2015-11-14 7:05 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-13 13:46 add a proper completion queue abstraction Christoph Hellwig
2015-11-13 13:46 ` [PATCH 1/9] move blk_iopoll to limit and make it generally available Christoph Hellwig
[not found] ` <1447422410-20891-2-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-13 15:23 ` Or Gerlitz
2015-11-13 15:23 ` Or Gerlitz
[not found] ` <CAJ3xEMgj2ycv61K38ZOowTRbrri_UhQgBcaKT0ZnnMHiBrmL5A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-14 7:02 ` Christoph Hellwig
2015-11-14 7:02 ` Christoph Hellwig
[not found] ` <20151114070200.GA27738-jcswGhMUV9g@public.gmane.org>
2015-11-15 8:48 ` Sagi Grimberg
2015-11-15 8:48 ` Sagi Grimberg
[not found] ` <564846E9.9070301-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-15 9:04 ` Or Gerlitz
2015-11-15 9:04 ` Or Gerlitz
[not found] ` <CAJ3xEMgvttM1D3bePz0CWhZAZ3gCSQsf_qgmq9Ny4gzK5d0bXw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-11-15 13:16 ` Sagi Grimberg
2015-11-15 13:16 ` Sagi Grimberg
2015-11-15 12:51 ` Christoph Hellwig
2015-11-15 12:51 ` Christoph Hellwig
2015-11-13 19:19 ` Bart Van Assche
2015-11-13 19:19 ` Bart Van Assche
2015-11-14 7:02 ` Christoph Hellwig
2015-11-17 17:16 ` Bart Van Assche
2015-11-17 17:16 ` Bart Van Assche
2015-11-17 17:27 ` Bart Van Assche
2015-11-18 13:58 ` Christoph Hellwig
2015-11-13 13:46 ` [PATCH 2/9] IB: add a proper completion queue abstraction Christoph Hellwig
2015-11-15 9:40 ` Sagi Grimberg
[not found] ` <564852F2.5080602-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-15 12:55 ` Christoph Hellwig
2015-11-15 12:55 ` Christoph Hellwig
[not found] ` <20151115125501.GB2218-jcswGhMUV9g@public.gmane.org>
2015-11-15 13:21 ` Sagi Grimberg
2015-11-15 13:21 ` Sagi Grimberg
[not found] ` <1447422410-20891-3-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-13 18:25 ` Jason Gunthorpe
2015-11-13 18:25 ` Jason Gunthorpe
[not found] ` <20151113182513.GB21808-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-11-13 19:57 ` Bart Van Assche
2015-11-13 19:57 ` Bart Van Assche
2015-11-13 22:06 ` Jason Gunthorpe
[not found] ` <20151113220636.GA32133-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-11-14 7:13 ` Christoph Hellwig
2015-11-14 7:13 ` Christoph Hellwig
[not found] ` <20151114071344.GE27738-jcswGhMUV9g@public.gmane.org>
2015-11-23 20:37 ` Jason Gunthorpe
2015-11-23 20:37 ` Jason Gunthorpe
2015-11-23 21:04 ` Bart Van Assche
2015-11-23 21:04 ` Bart Van Assche
2015-11-23 21:28 ` Jason Gunthorpe
2015-11-23 21:54 ` Bart Van Assche
2015-11-23 22:18 ` Jason Gunthorpe
2015-11-23 22:33 ` Bart Van Assche
2015-11-23 23:06 ` Jason Gunthorpe
[not found] ` <B24F4DDE-709A-4D2D-8B26-4E83325DBB1A@asomi.com>
2015-11-24 0:00 ` Jason Gunthorpe
[not found] ` <20151124000011.GA9301-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-11-24 0:34 ` Tom Talpey
2015-11-24 0:34 ` Tom Talpey
[not found] ` <5653B0AD.7090402-CLs1Zie5N5HQT0dZR+AlfA@public.gmane.org>
2015-11-24 0:40 ` Jason Gunthorpe
2015-11-24 0:40 ` Jason Gunthorpe
2015-11-24 2:35 ` Caitlin Bestler
2015-11-24 2:35 ` Caitlin Bestler
[not found] ` <5653CCF0.7050501-DpaxOq6QOWMAvxtiuMwx3w@public.gmane.org>
2015-11-24 7:03 ` Jason Gunthorpe
2015-11-24 7:03 ` Jason Gunthorpe
[not found] ` <20151124070301.GA23597-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-11-24 12:52 ` Tom Talpey
2015-11-24 12:52 ` Tom Talpey
2015-11-14 7:08 ` Christoph Hellwig
2015-11-14 7:08 ` Christoph Hellwig
2015-11-23 20:01 ` Jason Gunthorpe
[not found] ` <20151123200136.GA5640-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-11-23 20:57 ` Christoph Hellwig
2015-11-23 20:57 ` Christoph Hellwig
2015-11-17 17:52 ` Bart Van Assche
2015-11-17 17:52 ` Bart Van Assche
[not found] ` <564B697A.2020601-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-11-18 7:55 ` Sagi Grimberg
2015-11-18 7:55 ` Sagi Grimberg
[not found] ` <564C2F01.6020407-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-18 18:20 ` Bart Van Assche
2015-11-18 18:20 ` Bart Van Assche
2015-11-20 10:16 ` Christoph Hellwig
2015-11-20 16:50 ` Bart Van Assche
2015-11-22 9:51 ` Sagi Grimberg
2015-11-22 10:13 ` Christoph Hellwig
[not found] ` <20151122101308.GA12189-jcswGhMUV9g@public.gmane.org>
2015-11-22 10:36 ` Sagi Grimberg
2015-11-22 10:36 ` Sagi Grimberg
[not found] ` <56519A90.5010502-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-22 13:23 ` Christoph Hellwig
2015-11-22 13:23 ` Christoph Hellwig
[not found] ` <20151122132352.GA14154-jcswGhMUV9g@public.gmane.org>
2015-11-22 14:57 ` Sagi Grimberg
2015-11-22 14:57 ` Sagi Grimberg
2015-11-22 16:55 ` Bart Van Assche
2015-11-18 14:00 ` Christoph Hellwig
2015-11-18 14:00 ` Christoph Hellwig
2015-11-13 13:46 ` [PATCH 3/9] IB: add a helper to safely drain a QP Christoph Hellwig
2015-11-15 9:34 ` Sagi Grimberg
[not found] ` <564851BB.1020004-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-16 16:38 ` Steve Wise
2015-11-16 16:38 ` Steve Wise
[not found] ` <564A067B.8030504-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2015-11-16 18:30 ` Steve Wise
2015-11-16 18:30 ` Steve Wise
2015-11-16 18:37 ` Sagi Grimberg
[not found] ` <564A2270.1040004-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-16 19:03 ` Steve Wise
2015-11-16 19:03 ` Steve Wise
2015-11-17 8:54 ` Sagi Grimberg
2015-11-17 8:54 ` Sagi Grimberg
2015-11-23 10:28 ` Sagi Grimberg
2015-11-23 10:28 ` Sagi Grimberg
2015-11-23 10:35 ` Sagi Grimberg
2015-11-23 14:33 ` 'Christoph Hellwig'
[not found] ` <5652EC00.8010705-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-23 14:48 ` Steve Wise
2015-11-23 14:48 ` Steve Wise
2015-11-23 14:44 ` Steve Wise
2015-11-23 14:44 ` Steve Wise
2015-11-17 17:06 ` Bart Van Assche
2015-11-17 17:06 ` Bart Van Assche
[not found] ` <564B5E7D.9030309-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-11-18 7:59 ` Sagi Grimberg
2015-11-18 7:59 ` Sagi Grimberg
[not found] ` <1447422410-20891-4-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-13 16:16 ` Steve Wise
2015-11-13 16:16 ` Steve Wise
[not found] ` <56460CC4.3030001-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2015-11-14 7:05 ` Christoph Hellwig [this message]
2015-11-14 7:05 ` Christoph Hellwig
2015-11-18 11:32 ` Sagi Grimberg
2015-11-18 11:32 ` Sagi Grimberg
[not found] ` <564C61C3.3050307-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-11-18 14:06 ` Christoph Hellwig
2015-11-18 14:06 ` Christoph Hellwig
[not found] ` <20151118140645.GI18820-jcswGhMUV9g@public.gmane.org>
2015-11-18 15:21 ` Steve Wise
2015-11-18 15:21 ` Steve Wise
[not found] ` <1447422410-20891-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-13 13:46 ` [PATCH 4/9] srpt: chain RDMA READ/WRITE requests Christoph Hellwig
2015-11-13 13:46 ` Christoph Hellwig
2015-11-18 1:17 ` Bart Van Assche
2015-11-18 1:17 ` Bart Van Assche
2015-11-18 9:15 ` Sagi Grimberg
2015-11-18 16:32 ` Bart Van Assche
2015-11-18 16:32 ` Bart Van Assche
[not found] ` <564CA83B.4060403-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-11-20 10:20 ` Christoph Hellwig
2015-11-20 10:20 ` Christoph Hellwig
[not found] ` <564BD1AF.60200-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-11-18 14:06 ` Christoph Hellwig
2015-11-18 14:06 ` Christoph Hellwig
2015-11-13 13:46 ` [PATCH 5/9] srpt: use the new CQ API Christoph Hellwig
[not found] ` <1447422410-20891-6-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-17 18:22 ` Bart Van Assche
2015-11-17 18:22 ` Bart Van Assche
2015-11-17 19:38 ` Bart Van Assche
2015-11-17 19:38 ` Bart Van Assche
[not found] ` <564B8248.7050407-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2015-11-18 14:03 ` Christoph Hellwig
2015-11-18 14:03 ` Christoph Hellwig
2015-11-13 13:46 ` [PATCH 6/9] srp: " Christoph Hellwig
[not found] ` <1447422410-20891-7-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-17 19:56 ` Bart Van Assche
2015-11-17 19:56 ` Bart Van Assche
2015-11-18 14:03 ` Christoph Hellwig
2015-11-13 13:46 ` [PATCH 7/9] IB/iser: Use a dedicated descriptor for login Christoph Hellwig
[not found] ` <1447422410-20891-8-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-15 9:14 ` Or Gerlitz
2015-11-15 9:14 ` Or Gerlitz
2015-11-13 13:46 ` [PATCH 8/9] IB/iser: Use helper for container_of Christoph Hellwig
2015-11-13 13:46 ` [PATCH 9/9] IB/iser: Convert to CQ abstraction Christoph Hellwig
[not found] ` <1447422410-20891-10-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2015-11-15 9:21 ` Or Gerlitz
2015-11-15 9:21 ` Or Gerlitz
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