vhost: add virtio packed virtqueue defines

[dpdk.git] / lib / librte_vhost / vhost.h

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 79e3117..83c028a 100644 (file)
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -192,6 +192,26 @@ struct vhost_msg {
  #define VIRTIO_F_VERSION_1 32
 #endif
 
+/* Declare packed ring related bits for older kernels */
+#ifndef VIRTIO_F_RING_PACKED
+
+#define VIRTIO_F_RING_PACKED 34
+
+#define VRING_DESC_F_NEXT      1
+#define VRING_DESC_F_WRITE     2
+#define VRING_DESC_F_INDIRECT  4
+
+#define VRING_DESC_F_AVAIL     (1ULL << 7)
+#define VRING_DESC_F_USED      (1ULL << 15)
+
+struct vring_packed_desc {
+       uint64_t addr;
+       uint32_t len;
+       uint16_t id;
+       uint16_t flags;
+};
+#endif
+
 /*
  * Available and used descs are in same order
  */