netdev - Re: [RFC net-next 4/9] net: bridge: switchdev: Forward offloading

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Message-ID: <YI6/li9hwHo8GfCm@shredder>
Date:   Sun, 2 May 2021 18:04:54 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     Tobias Waldekranz <tobias@...dekranz.com>
Cc:     davem@...emloft.net, kuba@...nel.org, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com, olteanv@...il.com,
        roopa@...dia.com, nikolay@...dia.com, jiri@...nulli.us,
        stephen@...workplumber.org, netdev@...r.kernel.org,
        bridge@...ts.linux-foundation.org
Subject: Re: [RFC net-next 4/9] net: bridge: switchdev: Forward offloading

On Mon, Apr 26, 2021 at 07:04:06PM +0200, Tobias Waldekranz wrote:
> +static void nbp_switchdev_fwd_offload_add(struct net_bridge_port *p)
> +{
> +	void *priv;
> +
> +	if (!(p->dev->features & NETIF_F_HW_L2FW_DOFFLOAD))
> +		return;
> +
> +	priv = p->dev->netdev_ops->ndo_dfwd_add_station(p->dev, p->br->dev);

Some changes to team/bond/8021q will be needed in order to get this
optimization to work when they are enslaved to the bridge instead of the
front panel port itself?

> +	if (!IS_ERR_OR_NULL(priv))
> +		p->accel_priv = priv;
> +}
> +
> +static void nbp_switchdev_fwd_offload_del(struct net_bridge_port *p)
> +{
> +	if (!p->accel_priv)
> +		return;
> +
> +	p->dev->netdev_ops->ndo_dfwd_del_station(p->dev, p->accel_priv);
> +	p->accel_priv = NULL;
> +}