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-rw-r--r--src/vnet/devices/virtio/virtio.api1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio.api b/src/vnet/devices/virtio/virtio.api
index 3c8aed2e159..bbe2341a001 100644
--- 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