From: Rakesh Kudurumalla <rkudurumalla@marvell.com>
Date: Thu, 24 Feb 2022 08:35:28 +0000 (+0530)
Subject: net/cnxk: fix RSS RETA table update
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=fe3833ed2222c369f9b60c0be520dee6e875dcdf;p=dpdk.git

net/cnxk: fix RSS RETA table update

RSS reta table is corrupted during rte_eth_dev_rss_reta_update().
Fix it by restoring previous table entries before updating.

Fixes: 00242a687de6 ("net/cnxk: support RETA and RSS hash")
Cc: stable@dpdk.org

Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---

diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
index b0a16f3c56..f4a0562475 100644
--- a/drivers/net/cnxk/cnxk_ethdev_ops.c
+++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
@@ -857,6 +857,8 @@ cnxk_nix_reta_update(struct rte_eth_dev *eth_dev,
 		goto fail;
 	}
 
+	roc_nix_rss_reta_get(nix, 0, reta);
+
 	/* Copy RETA table */
 	for (i = 0; i < (int)(dev->nix.reta_sz / RTE_ETH_RETA_GROUP_SIZE); i++) {
 		for (j = 0; j < RTE_ETH_RETA_GROUP_SIZE; j++) {