From: Alvin Zhang <alvinx.zhang@intel.com>
Date: Fri, 8 Jan 2021 07:29:10 +0000 (+0800)
Subject: net/ice: fix RSS lookup table initialization
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=7fe2fde05ac8766afaed4344659e39e8fc6b2514;p=dpdk.git

net/ice: fix RSS lookup table initialization

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>
Tested-by: Wei Xie <weix.xie@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 587f485ee3..e2799a8eb2 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -3274,10 +3274,12 @@ ice_dev_configure(struct rte_eth_dev *dev)
 	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;