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[Qemu-devel] [PATCH v4 0/6] Add netmap backend offloadings support
From: |
Vincenzo Maffione |
Subject: |
[Qemu-devel] [PATCH v4 0/6] Add netmap backend offloadings support |
Date: |
Thu, 6 Feb 2014 17:02:14 +0100 |
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
- [Qemu-devel] [PATCH v4 0/6] Add netmap backend offloadings support,
Vincenzo Maffione <=
- [Qemu-devel] [PATCH v4 1/6] net: change vnet-hdr TAP prototypes, Vincenzo Maffione, 2014/02/06
- [Qemu-devel] [PATCH v4 2/6] net: extend NetClientInfo for offloading, Vincenzo Maffione, 2014/02/06
- [Qemu-devel] [PATCH v4 3/6] net: TAP uses NetClientInfo offloading callbacks, Vincenzo Maffione, 2014/02/06
- [Qemu-devel] [PATCH v4 5/6] net: make tap offloading callbacks static, Vincenzo Maffione, 2014/02/06
- [Qemu-devel] [PATCH v4 6/6] net: add offloading support to netmap backend, Vincenzo Maffione, 2014/02/06
- [Qemu-devel] [PATCH v4 4/6] net: virtio-net and vmxnet3 use offloading API, Vincenzo Maffione, 2014/02/06
- Re: [Qemu-devel] [PATCH v4 0/6] Add netmap backend offloadings support, Stefan Hajnoczi, 2014/02/19