[ovs-dev] [PATCH] netdev-dpdk: Add support for DPDK 16.11

[Loftus, Ciara]

> 
> On 11/24/2016 03:20 PM, Ciara Loftus wrote:
> > This commit announces support for DPDK 16.11. Compaitibilty with DPDK
> > v16.07 is not broken yet thanks to only minor code changes being needed
> > for the upgrade.
> >
> > Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
> > ---
> >  .travis/linux-build.sh    |  2 +-
> >  INSTALL.DPDK-ADVANCED.rst |  4 ++--
> >  INSTALL.DPDK.rst          | 18 +++++++++---------
> >  NEWS                      |  1 +
> >  lib/netdev-dpdk.c         |  3 ++-
> >  5 files changed, 15 insertions(+), 13 deletions(-)
> <snip />
> > diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
> > index de78ddd..7564ad7 100644
> > --- a/lib/netdev-dpdk.c
> > +++ b/lib/netdev-dpdk.c
> > @@ -2593,7 +2593,8 @@ netdev_dpdk_vhost_class_init(void)
> >          rte_vhost_driver_callback_register(&virtio_net_device_ops);
> >          rte_vhost_feature_disable(1ULL << VIRTIO_NET_F_HOST_TSO4
> >                                    | 1ULL << VIRTIO_NET_F_HOST_TSO6
> > -                                  | 1ULL << VIRTIO_NET_F_CSUM);
> > +                                  | 1ULL << VIRTIO_NET_F_CSUM
> > +                                  | 1ULL << VIRTIO_RING_F_INDIRECT_DESC);
> >          ovs_thread_create("vhost_thread", start_vhost_loop, NULL);
> >
> >          ovsthread_once_done(&once);
> >
> Any reason you disable indirect descs?
> Did you measure performance degradation with it?

I measured a slight decrease ~-6% for the use case I tested.
Either way, if it is to be enabled it should be enabled in a separate patch.

Thanks,
Ciara

> 
> 
> Thanks,
> Maxime