linux-kernel - [PATCH net-next 11/11] net: dsa: lantiq

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Message-ID: <b220ac149922839a261b754202c05df5bb253c98.1760566491.git.daniel@makrotopia.org>
Date: Wed, 15 Oct 2025 23:34:01 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Hauke Mehrtens <hauke@...ke-m.de>, Andrew Lunn <andrew@...n.ch>,
	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>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Andreas Schirm <andreas.schirm@...mens.com>,
	Lukas Stockmann <lukas.stockmann@...mens.com>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Peter Christen <peter.christen@...mens.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: [PATCH net-next 11/11] net: dsa: lantiq_gswip: treat VID 0 like the
 PVID

From: Vladimir Oltean <vladimir.oltean@....com>

Documentation/networking/switchdev.rst says that VLAN-aware bridges must
treat packets tagged with VID 0 the same as untagged. It appears from
the documentation that setting the GSWIP_PCE_VCTRL_VID0 flag (which this
driver already had defined) might achieve this.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/net/dsa/lantiq/lantiq_gswip.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/lantiq/lantiq_gswip.c b/drivers/net/dsa/lantiq/lantiq_gswip.c
index 1ff0932dae31..25f6b46957a0 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq/lantiq_gswip.c
@@ -603,7 +603,7 @@ static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
 		gswip_switch_mask(priv,
 				  GSWIP_PCE_VCTRL_VSR,
 				  GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
-				  GSWIP_PCE_VCTRL_VEMR,
+				  GSWIP_PCE_VCTRL_VEMR | GSWIP_PCE_VCTRL_VID0,
 				  GSWIP_PCE_VCTRL(port));
 		gswip_switch_mask(priv, GSWIP_PCE_PCTRL_0_TVM, 0,
 				  GSWIP_PCE_PCTRL_0p(port));
@@ -611,7 +611,7 @@ static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
 		/* Use port based VLAN */
 		gswip_switch_mask(priv,
 				  GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
-				  GSWIP_PCE_VCTRL_VEMR,
+				  GSWIP_PCE_VCTRL_VEMR | GSWIP_PCE_VCTRL_VID0,
 				  GSWIP_PCE_VCTRL_VSR,
 				  GSWIP_PCE_VCTRL(port));
 		gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_TVM,
-- 
2.51.0