# \[RFC virtio-next 2/4\] include/vring.h: Add support for reversed vritio rings. - From: Sjur Brændeland \ - Date: 2012-10-31 22:48:47 - List: netdev - Page: https://ratatoskr.run/netdev/2012/10/3949979 - Thread: https://ratatoskr.run/netdev/2012/10/3949973/t.md ```text From: Sjur Brændeland Add last avilable index to the vring_virtqueue structure, this is done to prepare for implementation of the reversed vring. Signed-off-by: Sjur Brændeland --- drivers/virtio/vring.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/virtio/vring.h b/drivers/virtio/vring.h index b997fc3..3b53961 100644 --- a/drivers/virtio/vring.h +++ b/drivers/virtio/vring.h @@ -51,6 +51,9 @@ struct vring_virtqueue /* Last used index we've seen. */ u16 last_used_idx; + /* Last avail index seen. NOTE: Only used for reversed rings.*/ + u16 last_avail_idx; + /* How to notify other side. FIXME: commonalize hcalls! */ void (*notify)(struct virtqueue *vq); -- 1.7.9.5 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization ```