linux-kernel - [PATCH net 3/6] net: dsa: ksz: insert tag on ks8795 ingress packets

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Message-Id: <bc79946d1dafded91729ee1674c1b88a3beea110.1610540603.git.gilles.doffe@savoirfairelinux.com>
Date:   Wed, 13 Jan 2021 13:45:19 +0100
From:   Gilles DOFFE <gilles.doffe@...oirfairelinux.com>
To:     netdev@...r.kernel.org
Cc:     Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH net 3/6] net: dsa: ksz: insert tag on ks8795 ingress packets

If 802.1q VLAN tag is removed from egress traffic, ingress
traffic should by logic be tagged.

Signed-off-by: Gilles DOFFE <gilles.doffe@...oirfairelinux.com>
---
 drivers/net/dsa/microchip/ksz8795.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 4b060503b2e8..193f03ef9160 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -874,6 +874,7 @@ static void ksz8795_port_vlan_add(struct dsa_switch *ds, int port,
 	}
 
 	ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged);
+	ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_INSERT_TAG, !untagged);
 }
 
 static int ksz8795_port_vlan_del(struct dsa_switch *ds, int port,
-- 
2.25.1