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Date:   Mon, 2 Aug 2021 18:37:23 +0300
From:   Vladimir Oltean <olteanv@gmail.com>
To:     Oleksij Rempel <o.rempel@pengutronix.de>
Cc:     Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mips@vger.kernel.org
Subject: Re: [PATCH net-next v3 3/6] net: dsa: qca: ar9331: add forwarding
 database support
Message-ID: <20210802153723.vp4phpinclsuhlzz@skbuf>
References: <20210802131037.32326-1-o.rempel@pengutronix.de>
 <20210802131037.32326-4-o.rempel@pengutronix.de>
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On Mon, Aug 02, 2021 at 03:10:34PM +0200, Oleksij Rempel wrote:
> +static int ar9331_sw_port_fdb_add(struct dsa_switch *ds, int port,
> +				  const unsigned char *mac, u16 vid)
> +{
> +	struct ar9331_sw_priv *priv = (struct ar9331_sw_priv *)ds->priv;
> +	u16 port_mask = BIT(port);
> +
> +	if (vid)
> +		return -EINVAL;

When did you test this patch last time on net-next?
Asking because when a port joins a VLAN-aware bridge, it will replay the
FDB entries towards the bridge, which include a VLAN-unaware FDB entry
with VID 0, and a VLAN-aware one with the bridge's default_pvid.
If you return -EINVAL, that br_fdb_replay call will fail and you will
fail to join the bridge.

> +
> +	return ar9331_sw_port_fdb_rmw(priv, mac, port_mask, 0);
> +}
> +
> +static int ar9331_sw_port_fdb_del(struct dsa_switch *ds, int port,
> +				  const unsigned char *mac, u16 vid)
> +{
> +	struct ar9331_sw_priv *priv = (struct ar9331_sw_priv *)ds->priv;
> +	u16 port_mask = BIT(port);
> +
> +	if (vid)
> +		return -EINVAL;
> +
> +	return ar9331_sw_port_fdb_rmw(priv, mac, 0, port_mask);
> +}