From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Fabian Holler <fabian.holler-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: mlx4: IB_EVENT_PATH_MIG not generated on path migration
Date: Tue, 10 Feb 2015 11:00:39 -0700 [thread overview]
Message-ID: <20150210180039.GD7427@obsidianresearch.com> (raw)
In-Reply-To: <20150210155643.GB13690-99BIx50xQYGELgA04lAiVw@public.gmane.org>
On Tue, Feb 10, 2015 at 04:56:43PM +0100, Fabian Holler wrote:
> Does anybody have an idea what could be wrong?
> Are the PATH_MIG* notifications with mlx4 drivers are working for somebody?
IIRC rdmacm does not forward these events.
There is a lot missing to support APM with RDMA CM, it doesn't do any
of the CM state machine operations to coordinate loading alternate
paths, for instance.
> As soon as the migration happens I expect that a IB_EVENT_PATH_MIG* is
> generated on the QP event handler, but I don't receive any QP events.
qp_event_handler is a RDMA CM event handler, it handles
RDMA_CM_EVENT_* and there is no RDMA_CM_EVENT_PATH_MIGRATED.
You'd need to listen to the verbs level events directly, I don't
recall if this is possible with RDMA CM or not, sorry.
Jason
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next prev parent reply other threads:[~2015-02-10 18:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-10 15:56 mlx4: IB_EVENT_PATH_MIG not generated on path migration Fabian Holler
[not found] ` <20150210155643.GB13690-99BIx50xQYGELgA04lAiVw@public.gmane.org>
2015-02-10 18:00 ` Jason Gunthorpe [this message]
[not found] ` <20150210180039.GD7427-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-02-10 21:26 ` Jack Wang
2015-02-11 9:21 ` Fabian Holler
[not found] ` <20150211092136.GB492-99BIx50xQYGELgA04lAiVw@public.gmane.org>
2015-02-11 17:38 ` Jason Gunthorpe
[not found] ` <20150211173837.GA20243-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-02-12 8:20 ` Fabian Holler
2015-02-16 11:48 ` Fabian Holler
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