kvargs: use SPDX tags

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

diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index 1a84ddf..d332069 100644 (file)
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -57,7 +57,9 @@ struct rte_vhost_vring {
        struct vring_used       *used;
        uint64_t                log_guest_addr;
 
+       /** Deprecated, use rte_vhost_vring_call() instead. */
        int                     callfd;
+
        int                     kickfd;
        uint16_t                size;
 };
@@ -407,6 +409,19 @@ int rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem);
 int rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
                              struct rte_vhost_vring *vring);
 
+/**
+ * Notify the guest that used descriptors have been added to the vring.  This
+ * function acts as a memory barrier.
+ *
+ * @param vid
+ *  vhost device ID
+ * @param vring_idx
+ *  vring index
+ * @return
+ *  0 on success, -1 on failure
+ */
+int rte_vhost_vring_call(int vid, uint16_t vring_idx);
+
 /**
  * Get vhost RX queue avail count.
  *