[v7,2/8] net/virtio: add packed virtqueue defines
Checks
Commit Message
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
---
drivers/net/virtio/virtio_ring.h | 4 ++++
1 file changed, 4 insertions(+)
Comments
On 10/03/2018 03:11 PM, Jens Freimann wrote:
> Signed-off-by: Jens Freimann <jfreimann@redhat.com>
> ---
> drivers/net/virtio/virtio_ring.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/virtio/virtio_ring.h b/drivers/net/virtio/virtio_ring.h
> index 309069fdb..36a65f9b3 100644
> --- a/drivers/net/virtio/virtio_ring.h
> +++ b/drivers/net/virtio/virtio_ring.h
> @@ -15,7 +15,11 @@
> #define VRING_DESC_F_WRITE 2
> /* This means the buffer contains a list of buffer descriptors. */
> #define VRING_DESC_F_INDIRECT 4
> +/* This flag means the descriptor was made available by the driver */
>
Trailing new line
> +#define VRING_DESC_F_AVAIL(b) ((uint16_t)(b) << 7)
> +/* This flag means the descriptor was used by the device */
> +#define VRING_DESC_F_USED(b) ((uint16_t)(b) << 15)
> /* The Host uses this in used->flags to advise the Guest: don't kick me
> * when you add a buffer. It's unreliable, so it's simply an
> * optimization. Guest will still kick if it's out of buffers. */
>
@@ -15,7 +15,11 @@
#define VRING_DESC_F_WRITE 2
/* This means the buffer contains a list of buffer descriptors. */
#define VRING_DESC_F_INDIRECT 4
+/* This flag means the descriptor was made available by the driver */
+#define VRING_DESC_F_AVAIL(b) ((uint16_t)(b) << 7)
+/* This flag means the descriptor was used by the device */
+#define VRING_DESC_F_USED(b) ((uint16_t)(b) << 15)
/* The Host uses this in used->flags to advise the Guest: don't kick me
* when you add a buffer. It's unreliable, so it's simply an
* optimization. Guest will still kick if it's out of buffers. */