netdev - Re: [PATCH v3 net-next RFC] Generic XDP

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Message-ID: <20170412143037.5fd7a088@xeon-e3>
Date:   Wed, 12 Apr 2017 14:30:37 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, xdp-newbies@...r.kernel.org
Subject: Re: [PATCH v3 net-next RFC] Generic XDP

On Wed, 12 Apr 2017 14:54:15 -0400 (EDT)
David Miller <davem@...emloft.net> wrote:

> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index b0aa089..071a58b 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -1891,9 +1891,17 @@ struct net_device {
>  	struct lock_class_key	*qdisc_tx_busylock;
>  	struct lock_class_key	*qdisc_running_key;
>  	bool			proto_down;
> +	struct bpf_prog __rcu	*xdp_prog;

It would be good if all devices could reuse this for the xdp_prog pointer.
It would allow for could be used for introspection utility functions in future.