diff mbox

[dpdk-dev,3/5] net/sfc: handle already flushed Rx queue gracefully

Message ID 1495871734-12485-3-git-send-email-arybchenko@solarflare.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Andrew Rybchenko May 27, 2017, 7:55 a.m. UTC 
  Rx queue may be already flushed because of previous Rx error or
MC reboot.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc_rx.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 122b657..325f32a 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -529,6 +529,7 @@  sfc_rx_qflush(struct sfc_adapter *sa, unsigned int sw_index)
 	struct sfc_rxq *rxq;
 	unsigned int retry_count;
 	unsigned int wait_count;
+	int rc;
 
 	rxq = sa->rxq_info[sw_index].rxq;
 	SFC_ASSERT(rxq->state & SFC_RXQ_STARTED);
@@ -541,8 +542,10 @@  sfc_rx_qflush(struct sfc_adapter *sa, unsigned int sw_index)
 	     ((rxq->state & SFC_RXQ_FLUSHED) == 0) &&
 	     (retry_count < SFC_RX_QFLUSH_ATTEMPTS);
 	     ++retry_count) {
-		if (efx_rx_qflush(rxq->common) != 0) {
-			rxq->state |= SFC_RXQ_FLUSH_FAILED;
+		rc = efx_rx_qflush(rxq->common);
+		if (rc != 0) {
+			rxq->state |= (rc == EALREADY) ?
+				SFC_RXQ_FLUSHED : SFC_RXQ_FLUSH_FAILED;
 			break;
 		}
 		rxq->state &= ~SFC_RXQ_FLUSH_FAILED;