virtio: add packet buffering on tx

[vpp.git] / src / vnet / devices / virtio / virtio.api

diff --git a/src/vnet/devices/virtio/virtio.api b/src/vnet/devices/virtio/virtio.api
index 3c8aed2..bbe2341 100644 (file)
--- a/src/vnet/devices/virtio/virtio.api
+++ b/src/vnet/devices/virtio/virtio.api
@@ -62,6 +62,7 @@ enum virtio_flags {
         VIRTIO_API_FLAG_GRO_COALESCE = 4, /* enable packet coalescing on tx side, provided gso enabled */
         VIRTIO_API_FLAG_PACKED = 8, /* enable packed ring support, provided it is available from backend */
         VIRTIO_API_FLAG_IN_ORDER = 16, /* enable in order support, provided it is available from backend */
+        VIRTIO_API_FLAG_BUFFERING = 32 [backwards_compatible], /* enable buffering to handle backend jitter/delays */
 };
 
 /** \brief Initialize a new virtio pci interface with the given parameters