Subject: Re: [net-next 2/4] gve: Add transmit and receive support

From: Andrew Lunn <[email-masked]>
Date: Wed, 26 Jun 2019 21:42:03 +0200

> +static int gve_change_mtu(struct net_device *dev, int new_mtu)
> +{
> +	dev->mtu = new_mtu;
> +	return 0;
> +}

The default implementation does this.

Also, i think your mtu has a limit of PAGE size.  So you should set
the dev->max_mtu so the core will enforce this.

    Andrew