odp-util: Keep base flow in sync with the kernel view.

Change the base flow only if a corresponding kernel action is generated
in commit_odp_tunnel_action().

Signed-off-by: Jarno Rajahalme <jarno.rajahalme@nsn.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>

diff --git a/lib/odp-util.c b/lib/odp-util.c
index 751c1c9..a8889dc 100644 (file)
--- a/lib/odp-util.c
+++ b/lib/odp-util.c
@@ -2161,13 +2161,12 @@ void
 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
                          struct ofpbuf *odp_actions)
 {
-    if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
-        return;
-    }
-    memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
-
     /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
     if (flow->tunnel.ip_dst) {
+        if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
+            return;
+        }
+        memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
         odp_put_tunnel_action(&base->tunnel, odp_actions);
     }
 }