net/txgbe: add Rx and Tx init

[dpdk.git] / drivers / net / virtio / virtio_ring.h

diff --git a/drivers/net/virtio/virtio_ring.h b/drivers/net/virtio/virtio_ring.h
index 6abec4d..0f6574f 100644 (file)
--- a/drivers/net/virtio/virtio_ring.h
+++ b/drivers/net/virtio/virtio_ring.h
@@ -15,10 +15,15 @@
 #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)
+#define VRING_PACKED_DESC_F_AVAIL      (1 << 7)
 /* This flag means the descriptor was used by the device */
-#define VRING_DESC_F_USED(b)    ((uint16_t)(b) << 15)
+#define VRING_PACKED_DESC_F_USED       (1 << 15)
+
+/* Frequently used combinations */
+#define VRING_PACKED_DESC_F_AVAIL_USED (VRING_PACKED_DESC_F_AVAIL | \
+                                        VRING_PACKED_DESC_F_USED)
 
 /* 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
@@ -54,7 +59,7 @@ struct vring_used_elem {
 
 struct vring_used {
        uint16_t flags;
-       volatile uint16_t idx;
+       uint16_t idx;
        struct vring_used_elem ring[0];
 };