vhost: batch small guest memory copies

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

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 6fe72ae..74df747 100644 (file)
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -81,6 +81,16 @@ struct zcopy_mbuf {
 };
 TAILQ_HEAD(zcopy_mbuf_list, zcopy_mbuf);
 
+/*
+ * Structure contains the info for each batched memory copy.
+ */
+struct batch_copy_elem {
+       void *dst;
+       void *src;
+       uint32_t len;
+       uint64_t log_addr;
+};
+
 /**
  * Structure contains variables relevant to RX/TX virtqueues.
  */
@@ -114,6 +124,9 @@ struct vhost_virtqueue {
 
        struct vring_used_elem  *shadow_used_ring;
        uint16_t                shadow_used_idx;
+
+       struct batch_copy_elem  *batch_copy_elems;
+       uint16_t                batch_copy_nb_elems;
 } __rte_cache_aligned;
 
 /* Old kernels have no such macros defined */