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-rw-r--r--src/vnet/devices/virtio/vhost_user_output.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_output.c b/src/vnet/devices/virtio/vhost_user_output.c
index 9b9f763b92f..4f72d00161e 100644
--- a/src/vnet/devices/virtio/vhost_user_output.c
+++ b/src/vnet/devices/virtio/vhost_user_output.c
@@ -295,6 +295,7 @@ VNET_DEVICE_CLASS_TX_FN (vhost_user_device_class) (vlib_main_t * vm,
u8 retry = 8;
u16 copy_len;
u16 tx_headers_len;
+ u32 or_flags;
if (PREDICT_FALSE (!vui->admin_up))
{
@@ -388,8 +389,13 @@ retry:
hdr->hdr.gso_type = VIRTIO_NET_HDR_GSO_NONE;
hdr->num_buffers = 1; //This is local, no need to check
- /* Guest supports csum offload? */
- if (vui->features & (1ULL << FEAT_VIRTIO_NET_F_GUEST_CSUM))
+ or_flags = (b0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM) ||
+ (b0->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) ||
+ (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM);
+
+ /* Guest supports csum offload and buffer requires checksum offload? */
+ if (or_flags
+ && (vui->features & (1ULL << FEAT_VIRTIO_NET_F_GUEST_CSUM)))
vhost_user_handle_tx_offload (vui, b0, &hdr->hdr);
// Prepare a copy order executed later for the header