linux-kernel - Re: [RFC Patch 2/3] bridge: make bridge support netpoll

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Message-ID: <4BA82186.3010204@redhat.com>
Date:	Tue, 23 Mar 2010 10:03:50 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Matt Mackall <mpm@...enic.com>
CC:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	bridge@...ts.linux-foundation.org,
	Andy Gospodarek <gospo@...hat.com>,
	Neil Horman <nhorman@...driver.com>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	bonding-devel@...ts.sourceforge.net,
	Jay Vosburgh <fubar@...ibm.com>,
	David Miller <davem@...emloft.net>
Subject: Re: [RFC Patch 2/3] bridge: make bridge support netpoll

Matt Mackall wrote:
> On Mon, 2010-03-22 at 04:17 -0400, Amerigo Wang wrote:
>> Based on the previous patch, make bridge support netpoll by:
>>
>> 1) implement the 4 methods to support netpoll for bridge;
>>
>> 2) modify netpoll during forwarding packets in bridge;
>>
>> 3) disable netpoll support of bridge when a netpoll-unabled device
>>    is added to bridge;
> 
> Not sure if this is the right thing to do. Shouldn't we simply enable
> polling on all devices that support it and warn about the others (aka
> best effort)?
> 

I don't think it's a good idea, because we check if a device
supports netpoll by checking if it has ndo_poll_controller method.

Thanks.

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