[PATCH 4.9 101/108] RDMA/qedr: Dont reset QP when queues arent flushed

Greg Kroah-Hartman
2017-06-15T18:00:29Z

From: Ram Amrani <Ram.Amrani@Cavium.com>

[ Upstream commit 933e6dcaa0f65eb2f624ad760274020874a1f35e ]

Fail QP state transition from error to reset if SQ/RQ are not empty
and still in the process of flushing out the queued work entries.

Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/infiniband/hw/qedr/verbs.c | 8 ++++++++
1 file changed, 8 insertions(+)

--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -1729,6 +1729,14 @@ static int qedr_update_qp_state(struct q
/* ERR->XXX */
switch (new_state) {
case QED_ROCE_QP_STATE_RESET:
+ if ((qp->rq.prod != qp->rq.cons) ||
+ (qp->sq.prod != qp->sq.cons)) {
+ DP_NOTICE(dev,
+ "Error->Reset with rq/sq not empty rq.prod=%x rq.cons=%x sq.prod=%x sq.cons=%x\n",
+ qp->rq.prod, qp->rq.cons, qp->sq.prod,
+ qp->sq.cons);
+ status = -EINVAL;
+ }
break;
default:
status = -EINVAL;