[dpdk-stable] [PATCH] net/ice: fix initialization of RSS look-up table

["Zhang,Alvin" <alvinx.zhang@intel.com>]

From: Alvin Zhang <alvinx.zhang@intel.com>

RSS look-up table initialization is done incorrectly due to divide-by-zero
error.
Add a check to rx-queue count.

Fixes: 50370662b727 ("net/ice: support device and queue ops")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 9a5d6a5..9cef73e 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -3268,10 +3268,12 @@ static int ice_init_rss(struct ice_pf *pf)
 	if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 
-	ret = ice_init_rss(pf);
-	if (ret) {
-		PMD_DRV_LOG(ERR, "Failed to enable rss for PF");
-		return ret;
+	if (dev->data->nb_rx_queues) {
+		ret = ice_init_rss(pf);
+		if (ret) {
+			PMD_DRV_LOG(ERR, "Failed to enable rss for PF");
+			return ret;
+		}
 	}
 
 	return 0;
-- 
1.8.3.1