diff mbox series

[v12,02/10] net/virtio: add packed virtqueue defines

Message ID 20181213123453.15035-3-jfreimann@redhat.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series implement packed virtqueues |

Checks

Context Check Description
ci/Intel-compilation success Compilation OK

Commit Message

Jens Freimann Dec. 13, 2018, 12:34 p.m. UTC 
  Signed-off-by: Jens Freimann <jfreimann@redhat.com>
---
 drivers/net/virtio/virtio_ring.h | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/virtio/virtio_ring.h b/drivers/net/virtio/virtio_ring.h
index e155eb17d..9ab007c11 100644
--- a/drivers/net/virtio/virtio_ring.h
+++ b/drivers/net/virtio/virtio_ring.h
@@ -15,6 +15,10 @@ 
 #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