Hello, Roland!
The following patch fixes system hangs I am sometimes seeing when
ipoib is brought down and back up.
Should something similiar be done in libmthca?
Thanks,
MST
---
mthca: last pointer was not updated when qp was modified to reset state.
This causes data corruption if wqes were already posted on the queue.
Signed-off-by: Michael S. Tsirkin <[EMAIL PROTECTED]>
Index: latest/drivers/infiniband/hw/mthca/mthca_qp.c
===================================================================
--- latest.orig/drivers/infiniband/hw/mthca/mthca_qp.c
+++ latest/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -869,7 +869,10 @@ int mthca_modify_qp(struct ib_qp *ibqp,
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;
--
MST
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