netdev - [PATCH net-next 03/10] net: microchip: sparx5: Egress VLAN TPID configuration follows IFH

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Date:   Mon, 13 Feb 2023 10:24:19 +0100
From:   Steen Hegelund <steen.hegelund@...rochip.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
CC:     Steen Hegelund <steen.hegelund@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Casper Andersson" <casper.casan@...il.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Wan Jiabing <wanjiabing@...o.com>,
        "Nathan Huckleberry" <nhuck@...gle.com>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        "Steen Hegelund" <Steen.Hegelund@...rochip.com>,
        Daniel Machon <daniel.machon@...rochip.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Dan Carpenter <error27@...il.com>,
        Michael Walle <michael@...le.cc>
Subject: [PATCH net-next 03/10] net: microchip: sparx5: Egress VLAN TPID configuration follows IFH

This changes the TPID of the egress frames to use the TPID stored in the
IFH (internal frame header), which ensures that this is the TPID classified
for the frame at ingress.

Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
---
 drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
index 34f954bbf815..ac001ae59a38 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
@@ -219,8 +219,8 @@ void sparx5_vlan_port_apply(struct sparx5 *sparx5,
 	spx5_wr(val, sparx5,
 		ANA_CL_VLAN_FILTER_CTRL(port->portno, 0));
 
-	/* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q */
-	val = REW_TAG_CTRL_TAG_TPID_CFG_SET(0);
+	/* Egress configuration (REW_TAG_CFG): VLAN tag selected via IFH */
+	val = REW_TAG_CTRL_TAG_TPID_CFG_SET(5);
 	if (port->vlan_aware) {
 		if (port->vid)
 			/* Tag all frames except when VID == DEFAULT_VLAN */
-- 
2.39.1