vhost: export vhost vring info

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

diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index e365597..31e175b 100644 (file)
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -80,6 +80,17 @@ struct rte_vhost_memory {
        struct rte_vhost_mem_region regions[0];
 };
 
+struct rte_vhost_vring {
+       struct vring_desc       *desc;
+       struct vring_avail      *avail;
+       struct vring_used       *used;
+       uint64_t                log_guest_addr;
+
+       int                     callfd;
+       int                     kickfd;
+       uint16_t                size;
+};
+
 /**
  * Device and vring operations.
  */
@@ -298,4 +309,19 @@ uint16_t rte_vhost_dequeue_burst(int vid, uint16_t queue_id,
  */
 int rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem);
 
+/**
+ * Get guest vring info, including the vring address, vring size, etc.
+ *
+ * @param vid
+ *  vhost device ID
+ * @param vring_idx
+ *  vring index
+ * @param vring
+ *  the structure to hold the requested vring info
+ * @return
+ *  0 on success, -1 on failure
+ */
+int rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
+                             struct rte_vhost_vring *vring);
+
 #endif /* _VIRTIO_NET_H_ */