netdev - [PATCH net-next v5 6/6] net: dsa: microchip: fix tag

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Message-ID: <20240812153015.653044-7-vtpieter@gmail.com>
Date: Mon, 12 Aug 2024 17:29:57 +0200
From: vtpieter@...il.com
To: Woojung Huh <woojung.huh@...rochip.com>,
	UNGLinuxDriver@...rochip.com,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	David S Miller <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Marek Vasut <marex@...x.de>
Cc: Woojung Huh <Woojung.Huh@...rochip.com>,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Pieter Van Trappen <pieter.van.trappen@...n.ch>
Subject: [PATCH net-next v5 6/6] net: dsa: microchip: fix tag_ksz egress mask for KSZ8795 family

From: Pieter Van Trappen <pieter.van.trappen@...n.ch>

Fix the tag_ksz egress mask for DSA_TAG_PROTO_KSZ8795, the port is
encoded in the two and not three LSB. This fix is for completeness,
for example the bug doesn't manifest itself on the KSZ8794 because bit
2 seems to be always zero.

Signed-off-by: Pieter Van Trappen <pieter.van.trappen@...n.ch>
---
 net/dsa/tag_ksz.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index ee7b272ab715..15d9f8d28ffc 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -141,7 +141,7 @@ static struct sk_buff *ksz8795_rcv(struct sk_buff *skb, struct net_device *dev)
 {
 	u8 *tag = skb_tail_pointer(skb) - KSZ_EGRESS_TAG_LEN;
 
-	return ksz_common_rcv(skb, dev, tag[0] & 7, KSZ_EGRESS_TAG_LEN);
+	return ksz_common_rcv(skb, dev, tag[0] & GENMASK(1, 0), KSZ_EGRESS_TAG_LEN);
 }
 
 static const struct dsa_device_ops ksz8795_netdev_ops = {
-- 
2.43.0