On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
large (i.e. GSO) packets and packets with partial checksums. Setting
the flag means that every packet is proceeded by the same header which
virtio uses to
On Tue, 2009-01-27 at 10:05 +, Daniel P. Berrange wrote:
On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
It's nearly five months since kvm-74 - the first KVM release with this
feature - was released. Up until now, we've not added libvirt support
because there is no
IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
large (i.e. GSO) packets and packets with partial checksums. Setting
the flag means that every packet is proceeded by the same header which
virtio uses to communicate GSO/csum metadata.
By enabling this flag on the tap fds we
On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
large (i.e. GSO) packets and packets with partial checksums. Setting
the flag means that every packet is proceeded by the same header which
virtio uses to
Hi Rich,
On Mon, 2009-01-26 at 11:39 +, Richard W.M. Jones wrote:
On Mon, Jan 26, 2009 at 10:39:25AM +, Mark McLoughlin wrote:
IFF_VNET_HDR is a tun/tap flag that allows you to send and receive
large (i.e. GSO) packets and packets with partial checksums. Setting
the flag means that
Hey,
Here's a patch that allows libvirt created guests to use KVM's recent
GSO support in order to increase the throughput achieved with virtio_net
network interfaces.
We shouldn't apply this yet - we need the kernel and kvm TUNGETIFF
patches to be applied first - so this is just intended as an
On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
By enabling this flag on the tap fds we create, we greatly increase
the achievable throughput with virtio_net.
However, we need to be careful to only set the flag when a) KVM has
support for this ABI and b) the value of the
On Wed, 2008-08-13 at 16:01 +0100, Daniel P. Berrange wrote:
On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
By enabling this flag on the tap fds we create, we greatly increase
the achievable throughput with virtio_net.
However, we need to be careful to only set the flag
On Wed, 2008-08-13 at 15:53 +0100, Mark McLoughlin wrote:
+net-model !strcmp(net-model, virtio))
Should be:
+net-model STREQ(net-model, virtio))
Cheers,
Mark.
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On Wed, Aug 13, 2008 at 04:14:10PM +0100, Mark McLoughlin wrote:
On Wed, 2008-08-13 at 16:01 +0100, Daniel P. Berrange wrote:
On Wed, Aug 13, 2008 at 03:53:27PM +0100, Mark McLoughlin wrote:
By enabling this flag on the tap fds we create, we greatly increase
the achievable throughput with
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