From: Ben Greear <greearb@candelatech.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: netdev@vger.kernel.org
Subject: Re: [net-next 2/2] macvlan: Enable qdisc backoff logic.
Date: Wed, 25 Aug 2010 12:27:43 -0700 [thread overview]
Message-ID: <4C756EAF.9090704@candelatech.com> (raw)
In-Reply-To: <201008252124.09917.arnd@arndb.de>
On 08/25/2010 12:24 PM, Arnd Bergmann wrote:
> On Wednesday 25 August 2010 21:00:51 Ben Greear wrote:
>> This allows macvlans to apply backpressure to calling code
>> in the transmit path when the underlying qdisc cannot accept
>> additional packets.
>>
>> Signed-off-by: Ben Greear<greearb@candelatech.com>
>
> Ah, very nice! I was wondering how to do this.
>
> I suppose we need to do something in macvtap to handle this as
> well, right? A guest trying to send a frame through qemu
> or vhost net into macvtap needs to be prevented from sending
> more when we get into this path. Right now, we just ignore
> the return value of macvlan_start_xmit.
I have a similar, though slightly more complex, patch for 802.1q
vlans, but I haven't looked at macvtap at all.
If these two patches are accepted, I'll post the .1q patch as well.
Thanks,
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2010-08-25 19:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-25 19:00 [net-next 1/2] qdisc: Allow qdiscs to provide backpressure up the stack Ben Greear
2010-08-25 19:00 ` [net-next 2/2] macvlan: Enable qdisc backoff logic Ben Greear
2010-08-25 19:24 ` Arnd Bergmann
2010-08-25 19:27 ` Ben Greear [this message]
2010-08-25 19:38 ` Hagen Paul Pfeifer
2010-08-25 19:49 ` Ben Greear
2010-08-25 19:59 ` Arnd Bergmann
2010-08-25 20:49 ` Ben Greear
2010-08-26 13:55 ` Arnd Bergmann
2010-08-26 15:33 ` Ben Greear
2010-08-26 17:45 ` Ben Greear
2010-08-27 13:16 ` Arnd Bergmann
2010-08-25 20:44 ` [net-next 1/2] qdisc: Allow qdiscs to provide backpressure up the stack Stephen Hemminger
2010-08-25 20:56 ` Ben Greear
2010-08-26 22:59 ` David Miller
2010-08-27 4:14 ` Ben Greear
2010-08-27 4:34 ` David Miller
2010-08-27 5:22 ` Ben Greear
2010-08-27 5:36 ` David Miller
2010-08-27 5:58 ` Ben Greear
2010-08-27 6:11 ` David Miller
2010-08-27 15:26 ` Ben Greear
2010-08-27 15:59 ` Eric Dumazet
2010-08-27 17:00 ` Ben Greear
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