Changing CQ-Doorbell(DB) logic to prevent DB floods, it is supposed to be
pressed only if any hw CQE is polled. If cq-arm was requested
previously then don't bother about number of hw CQEs polled and
arm the CQ.
Signed-off-by: Devesh Sharma <devesh.sharma@xxxxxxxxxxxxx>
---
src/ocrdma_verbs.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/src/ocrdma_verbs.c b/src/ocrdma_verbs.c
index d80ab27..cf6f72c 100644
--- a/src/ocrdma_verbs.c
+++ b/src/ocrdma_verbs.c
@@ -2003,14 +2003,11 @@ expand_cqe:
}
stop_cqe:
cq->getp = cur_getp;
- if (cq->deferred_arm) {
- ocrdma_ring_cq_db(cq, 1, cq->deferred_sol, polled_hw_cqes);
+ if (cq->deferred_arm || polled_hw_cqes) {
+ ocrdma_ring_cq_db(cq, cq->deferred_arm,
+ cq->deferred_sol, polled_hw_cqes);
cq->deferred_arm = 0;
cq->deferred_sol = 0;
- } else {
- /* We need to pop the CQE. No need to arm */
- ocrdma_ring_cq_db(cq, 0, cq->deferred_sol, polled_hw_cqes);
- cq->deferred_sol = 0;
}
return i;
--
1.8.3.1
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