From: Mark McLoughlin <markmc@redhat.com>
To: Sridhar Samudrala <sri@us.ibm.com>
Cc: avi@redhat.com, aliguori@us.ibm.com, kvm@vger.kernel.org
Subject: Re: [PATCH qemu-kvm] Enable UFO on virtio-net and tap devices
Date: Thu, 08 Oct 2009 11:07:57 +0100 [thread overview]
Message-ID: <1254996477.8069.17.camel@blaa> (raw)
In-Reply-To: <1254952242.31575.179.camel@w-sridhar.beaverton.ibm.com>
On Wed, 2009-10-07 at 14:50 -0700, Sridhar Samudrala wrote:
> linux 2.6.32 includes UDP fragmentation offload support in software.
> So we can enable UFO on the host tap device if supported and allow setting
> UFO on virtio-net in the guest.
Hmm, we really need to detect whether the host has tuntap UFO support
before advertising it to the guest. Maybe in net_tap_fd_init() we should
toggle TUN_F_UFO back and forth and check for EINVAL?
Cheers,
Mark.
next prev parent reply other threads:[~2009-10-08 10:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-07 21:50 [PATCH qemu-kvm] Enable UFO on virtio-net and tap devices Sridhar Samudrala
2009-10-08 10:07 ` Mark McLoughlin [this message]
2009-10-08 22:31 ` Sridhar Samudrala
2009-10-09 7:11 ` Mark McLoughlin
2009-10-13 15:35 ` Marcelo Tosatti
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