diff mbox series

[v7,2/8] net/virtio: add packed virtqueue defines

Message ID 20181003131118.21491-3-jfreimann@redhat.com (mailing list archive)
State Superseded, archived
Delegated to: Maxime Coquelin
Headers
Series implement packed virtqueues |

Checks

Context Check Description
ci/Intel-compilation success Compilation OK

Commit Message

Jens Freimann Oct. 3, 2018, 1:11 p.m. UTC 
  Signed-off-by: Jens Freimann <jfreimann@redhat.com>
---
 drivers/net/virtio/virtio_ring.h | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Maxime Coquelin Oct. 4, 2018, 11:54 a.m. UTC | #1 
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. */
>
diff mbox series

Patch

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 */
 
+#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. */