Commit 187a2586 authored Nov 28, 2005 by Michael S. Tsirkin Committed by Roland Dreier Nov 28, 2005

IB/mthca: reset QP's last pointers when transitioning to reset state



last pointer is not updated when QP is modified to reset state.  This
causes data corruption if WQEs are already posted on the queue.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

parent 458af543

drivers/infiniband/hw/mthca/mthca_qp.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -871,7 +871,10 @@ int mthca_modify_qp(struct ib_qp ibqp, struct ib_qp_attr attr, int attr_mask)
		qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);

		mthca_wq_init(&qp->sq);
		qp->sq.last = get_send_wqe(qp, qp->sq.max - 1);

		mthca_wq_init(&qp->rq);
		qp->rq.last = get_recv_wqe(qp, qp->rq.max - 1);

		if (mthca_is_memfree(dev)) {
		*qp->sq.db = 0;