On 04/26/2016 09:00 AM, Steve Wise wrote: > On 4/26/2016 10:55 AM, Chuck Lever wrote: >>> On Apr 26, 2016, at 11:43 AM, Christoph Hellwig <hch@xxxxxx> wrote: >>> >>> Just curious: what takes care of draining SRQs when we unregister them >>> after all queues are gone? >> >> Conversely, I would think that a consumer that uses SRQ >> would want a similar drain mechanism to guarantee there >> are no more posted Receives for the associated QP, and >> thus it is safe to destroy it. > > I don't think there is anything now that handles draining an SRQ, nor > ensuring a QP's RQEs are completed/consumed from its SRQ when draining > the QP. Sounds like work is needed here. > > But are there any kernel SRQ consumers at this point? I think the following two: $ git grep -nHE '(ib|rdma)_create_srq' drivers/infiniband/ulp drivers/infiniband/ulp/ipoib/ipoib_cm.c:1521: priv->cm.srq = ib_create_srq(priv->pd, &srq_init_attr); drivers/infiniband/ulp/srpt/ib_srpt.c:2723: sdev->srq = ib_create_srq(sdev->pd, &srq_attr); Bart. -- 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
