[dpdk-dev] [PATCH] vhost: support Generic Segmentation Offload

Jiayu Hu jiayu.hu at intel.com
Tue Nov 28 06:28:33 CET 2017


In virtio, Generic Segmentation Offload (GSO) is the feature for the
backend, which means the backend can receive packets with any GSO
type.

Virtio-net enables the GSO feature by default, and vhost-net supports it.
To make live migration from vhost-net to vhost-user possible, this patch
enables GSO for vhost-user.

Signed-off-by: Jiayu Hu <jiayu.hu at intel.com>
---
 lib/librte_vhost/vhost.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 1cc81c1..04f54cb 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -204,6 +204,7 @@ struct vhost_msg {
 				(1ULL << VIRTIO_F_VERSION_1)   | \
 				(1ULL << VHOST_F_LOG_ALL)      | \
 				(1ULL << VHOST_USER_F_PROTOCOL_FEATURES) | \
+				(1ULL << VIRTIO_NET_F_GSO) | \
 				(1ULL << VIRTIO_NET_F_HOST_TSO4) | \
 				(1ULL << VIRTIO_NET_F_HOST_TSO6) | \
 				(1ULL << VIRTIO_NET_F_CSUM)    | \
-- 
2.7.4



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