Hello Jason, thanks for your answer. On Tue, Feb 10, 2015 at 11:00:39AM -0700, Jason Gunthorpe wrote: > 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. Alternate paths can be set directly at the QP. > > 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. The RDMA CM event handler is registered by the rdma_create_id() call. The event handler specified in the struct ib_qp_init_attr * parameter of rdma_create_qp() is registered as QP event handler. rdma_create_qp() calls ib_create_qp() and sets qp->event_handler to ib_qp_init_attr->event_handler. Fabian -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
