From: Sridhar Samudrala <sri@us.ibm.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
davem@davemloft.net, netdev@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH net-next 2/4] udp: Handle large UFO packets from untrusted sources
Date: Tue, 09 Jun 2009 22:52:11 -0700 [thread overview]
Message-ID: <4A2F4A0B.3020205@us.ibm.com> (raw)
In-Reply-To: <200906101310.41094.rusty@rustcorp.com.au>
Rusty Russell wrote:
> On Mon, 8 Jun 2009 02:46:08 pm Herbert Xu wrote:
>
>> On Fri, Jun 05, 2009 at 05:16:31PM -0700, Sridhar Samudrala wrote:
>>
>>> + /* Software UFO is not yet supported */
>>> + segs = ERR_PTR(-EPROTONOSUPPORT);
>>>
>> Hmm, we need to fill this in before you start using it for virt.
>> After all, it's very difficult for the guest to know whether the
>> output device on the host is going to be able to do UFO or not.
>>
>
> Yep, no point telling the guest we support UFO if we don't!
>
This path is taken only when the packet needs to go out a device that
doesn't support UFO.
Until the software UFO is supported, I thought it may be useful to
provide a way to enable
UFO inter-guest, between host to guest and to an external host via an
outgoing device that supports UFO.
Thanks
Sridhar
prev parent reply other threads:[~2009-06-10 5:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-06 0:16 [PATCH net-next 2/4] udp: Handle large UFO packets from untrusted sources Sridhar Samudrala
2009-06-08 5:16 ` Herbert Xu
2009-06-08 17:04 ` Sridhar Samudrala
2009-06-08 23:37 ` Herbert Xu
2009-06-10 5:51 ` Sridhar Samudrala
2009-06-10 9:17 ` Herbert Xu
2009-06-10 3:40 ` Rusty Russell
2009-06-10 5:52 ` Sridhar Samudrala [this message]
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