netdev - Re: [PATCH net-next RFC WIP] Patch for XDP support for virtio

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Message-ID: <20161025183639.69d2fa50@jkicinski-Precision-T1700>
Date:   Tue, 25 Oct 2016 18:36:39 +0100
From:   Jakub Kicinski <kubakici@...pl>
To:     Shrijeet Mukherjee <shrijeet@...il.com>
Cc:     mst@...hat.com, tom@...bertland.com, netdev@...r.kernel.org,
        shm@...ulusnetworks.com, roopa@...ulusnetworks.com,
        nikolay@...ulusnetworks.com
Subject: Re: [PATCH net-next RFC WIP] Patch for XDP support for virtio_net

On Sat, 22 Oct 2016 04:07:23 +0000, Shrijeet Mukherjee wrote:
> +		act = bpf_prog_run_xdp(xdp_prog, &xdp);
> +		switch (act) {
> +		case XDP_PASS:
> +			return XDP_PASS;
> +		case XDP_TX:
> +		case XDP_ABORTED:
> +		case XDP_DROP:
> +			return XDP_DROP;
> +		default:
> +			bpf_warn_invalid_xdp_action(act);
> +		}
> +	}
> +	return XDP_PASS;

FWIW you may want to move the default label before XDP_TX/XDP_ABORT,
to get the behaviour to be drop on unknown ret code.