netdev - [PATCH net] net/mlx4_en: Don't allow aRFS for encapsulated packets

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Message-ID: <20210923065145.27583-1-tariqt@nvidia.com>
Date:   Thu, 23 Sep 2021 09:51:45 +0300
From:   Tariq Toukan <tariqt@...dia.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, Saeed Mahameed <saeedm@...dia.com>,
        "Moshe Shemesh" <moshe@...dia.com>, Aya Levin <ayal@...dia.com>,
        Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH net] net/mlx4_en: Don't allow aRFS for encapsulated packets

From: Aya Levin <ayal@...dia.com>

Driver doesn't support aRFS for encapsulated packets, return early error
in such a case.

Fixes: 1eb8c695bda9 ("net/mlx4_en: Add accelerated RFS support")
Signed-off-by: Aya Levin <ayal@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 3 +++
 1 file changed, 3 insertions(+)

Hi,
Please queue to -stable.

Regards,
Tariq

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 35154635ec3a..8af7f2827322 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -372,6 +372,9 @@ mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 	int nhoff = skb_network_offset(skb);
 	int ret = 0;
 
+	if (skb->encapsulation)
+		return -EPROTONOSUPPORT;
+
 	if (skb->protocol != htons(ETH_P_IP))
 		return -EPROTONOSUPPORT;
 
-- 
2.21.0