Re: [dpdk-dev] [PATCH 0/8] add vhost TX offload support

["Liu, Jijiang" <jijiang.liu@intel.com>]

We have tested the following case on Intel 10G NIC using the patch set.

Test case Flow:
 Iperf app running on legacy virtio guest---->DPDK vhost-----> two physical ports loopback on a NIC ----> legacy vhost----->iperf app running on a legacy virtio guest.

After enabling the vhost TSO and checksum offload,  there is about 60% throughput performance improvement.

And we will continue to test the performance after the patch set is applied.

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Jijiang Liu
> Sent: Wednesday, October 21, 2015 12:47 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH 0/8] add vhost TX offload support
> 
> In fact, this patch set is v2 of [1], but I consider that the vhost checksum
> offload capability is also supported in this version, and send a new patch set
> out.
> 
> The patch set add the negotiation between us-vhost and virtio-net for vhost
> TX offload(checksum and TSO), and add the TX offload support in the libs and
> change vhost sample and csum application to test these changes.
> 
> 
> [1]http://dpdk.org/ml/archives/dev/2015-September/023686.html
> 
> 
> Jijiang Liu (8):
>   add virtual address of virtio net header
>   store virtual address of virtio hdr
>   add vhost TX offload support capability in virtio-net
>   add vhost TX offload support capability in vhost
>   enqueue TX offload
>   dequeue TX offload
>   change vhost App to support TX offload
>   fix csumonly fwd issue
> 
>  app/test-pmd/csumonly.c            |    6 ++
>  drivers/net/virtio/virtio_ethdev.c |    3 +
>  drivers/net/virtio/virtio_ethdev.h |    5 +-
>  drivers/net/virtio/virtio_rxtx.c   |   61 +++++++++++++++++
>  drivers/net/virtio/virtqueue.h     |    1 +
>  examples/vhost/main.c              |  128
> +++++++++++++++++++++++++++++++-----
>  lib/librte_vhost/vhost_rxtx.c      |  108 ++++++++++++++++++++++++++++++-
>  lib/librte_vhost/virtio-net.c      |    6 ++-
>  8 files changed, 298 insertions(+), 20 deletions(-)
> 
> --
> 1.7.7.6