If VIRTIO_F_IN_ORDER has been negotiated, driver will use descriptors in ring order: starting from offset 0 in the table, and wrapping around at the end of the table.
Signed-off-by: Marvin Liu <yong....@intel.com> diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h index a28ba8339..049344383 100644 --- a/drivers/net/virtio/virtio_pci.h +++ b/drivers/net/virtio/virtio_pci.h @@ -121,6 +121,12 @@ struct virtnet_ctl; #define VIRTIO_TRANSPORT_F_START 28 #define VIRTIO_TRANSPORT_F_END 34 +/* + * Inorder feature indicates that all buffers are used by the device + * in the same order in which they have been made available. + */ +#define VIRTIO_F_IN_ORDER 35 + /* The Guest publishes the used index for which it expects an interrupt * at the end of the avail ring. Host should ignore the avail->flags field. */ /* The Host publishes the avail index for which it expects a kick -- 2.17.0
