From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: mlx4: IB_EVENT_PATH_MIG not generated on path migration Date: Tue, 10 Feb 2015 11:00:39 -0700 Message-ID: <20150210180039.GD7427@obsidianresearch.com> References: <20150210155643.GB13690@fholler.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20150210155643.GB13690-99BIx50xQYGELgA04lAiVw@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Fabian Holler Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.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 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html