netdev - [PATCH] net: dsa: lan9303: add VLAN IDs to master device

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Message-Id: <20220216151111.6376-1-mans@mansr.com>
Date:   Wed, 16 Feb 2022 15:11:11 +0000
From:   Mans Rullgard <mans@...sr.com>
To:     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>,
        Juergen Borleis <kernel@...gutronix.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] net: dsa: lan9303: add VLAN IDs to master device

If the master device does VLAN filtering, the IDs used by the switch
must be added for any frames to be received.  Do this in the
port_enable() function, and remove them in port_disable().

Signed-off-by: Mans Rullgard <mans@...sr.com>
---
 drivers/net/dsa/lan9303-core.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 873a5588171b..f3bf642fbf92 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1084,20 +1084,32 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
 			       struct phy_device *phy)
 {
 	struct lan9303 *chip = ds->priv;
+	struct dsa_port *cpu_dp;
 
 	if (!dsa_is_user_port(ds, port))
 		return 0;
 
+	dsa_switch_for_each_cpu_port(cpu_dp, ds)
+		break;
+
+	vlan_vid_add(cpu_dp->master, htons(ETH_P_8021Q), port);
+
 	return lan9303_enable_processing_port(chip, port);
 }
 
 static void lan9303_port_disable(struct dsa_switch *ds, int port)
 {
 	struct lan9303 *chip = ds->priv;
+	struct dsa_port *cpu_dp;
 
 	if (!dsa_is_user_port(ds, port))
 		return;
 
+	dsa_switch_for_each_cpu_port(cpu_dp, ds)
+		break;
+
+	vlan_vid_del(cpu_dp->master, htons(ETH_P_8021Q), port);
+
 	lan9303_disable_processing_port(chip, port);
 	lan9303_phy_write(ds, chip->phy_addr_base + port, MII_BMCR, BMCR_PDOWN);
 }
-- 
2.35.1