On Thu, Feb 06, 2014 at 05:02:14PM +0100, Vincenzo Maffione wrote: > The purpose of this patch series is to add offloadings support > (TSO/UFO/CSUM) to the netmap network backend, and make it possible > for the paravirtual network frontends (virtio-net and vmxnet3) to > use it. > In order to achieve this, these patches extend the existing > net.h interface to add abstract operations through which a network > frontend can manipulate backend offloading features, instead of > directly calling TAP-specific functions. > > Guest-to-guest performance before this patches for virtio-net + netmap: > > TCP_STREAM 5.0 Gbps > TCP_RR 12.7 Gbps > UDP_STREAM (64-bytes) 790 Kpps > > Guest-to-guest performance after this patches for virtio-net + netmap: > > TCP_STREAM 21.4 Gbps > TCP_RR 12.7 Gbps > UDP_STREAM (64-bytes) 790 Kpps > > Experiment details: > - Processor: Intel i7-3770K CPU @ 3.50GHz (8 cores) > - Memory @ 1333 MHz > - Host O.S.: Archlinux with Linux 3.11 > - Guest O.S.: Archlinux with Linux 3.11 > > - QEMU command line: > qemu-system-x86_64 archdisk.qcow -snapshot -enable-kvm -device > virtio-net-pci,ioeventfd=on,mac=00:AA:BB:CC:DD:01,netdev=mynet -netdev > netmap,ifname=vale0:01,id=mynet -smp 2 -vga std -m 3G > > > ******** Changes against the previous version *********** > (1) make tap offloading callbacks static > (2) tap-win32.c modified to initialize offloading callback pointers > (3) fix a bug when calling qemu_peer_using_vnet_header > > Vincenzo Maffione (6): > net: change vnet-hdr TAP prototypes > net: extend NetClientInfo for offloading > net: TAP uses NetClientInfo offloading callbacks > net: virtio-net and vmxnet3 use offloading API > net: make tap offloading callbacks static > net: add offloading support to netmap backend > > hw/net/vhost_net.c | 4 +-- > hw/net/virtio-net.c | 16 ++++------ > hw/net/vmxnet3.c | 12 +++---- > include/net/net.h | 19 +++++++++++ > include/net/tap.h | 6 ---- > net/net.c | 55 ++++++++++++++++++++++++++++++++ > net/netmap.c | 68 ++++++++++++++++++++++++++++++++++++++- > net/tap-win32.c | 92 > ++++++++++++++++++++++++++++------------------------- > net/tap.c | 20 ++++++++---- > 9 files changed, 216 insertions(+), 76 deletions(-) > > -- > 1.8.5.3 > >
Thanks, applied to my net tree: https://github.com/stefanha/qemu/commits/net Stefan