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

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Message-Id: <20170412.215431.1851482226330564808.davem@davemloft.net>
Date:   Wed, 12 Apr 2017 21:54:31 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     stephen@...workplumber.org
Cc:     netdev@...r.kernel.org, xdp-newbies@...r.kernel.org
Subject: Re: [PATCH v3 net-next RFC] Generic XDP

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Wed, 12 Apr 2017 14:30:37 -0700

> 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.

We plan to do so.