openvswitch: kernel datapath clone action
Add 'clone' action to kernel datapath by using existing functions.
When actions within clone don't modify the current flow, the flow
key is not cloned before executing clone actions.
This is a follow up patch for this incomplete work:
https://patchwork.ozlabs.org/patch/722096/
v1 -> v2:
Refactor as advised by reviewer.
Signed-off-by: Yifeng Sun <pkusunyifeng@gmail.com>
Signed-off-by: Andy Zhou <azhou@ovn.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/openvswitch.h b/include/linux/openvswitch.h
index e6b240b6..379affc 100644
--- a/include/linux/openvswitch.h
+++ b/include/linux/openvswitch.h
@@ -21,4 +21,9 @@
#include <uapi/linux/openvswitch.h>
+#define OVS_CLONE_ATTR_EXEC 0 /* Specify an u32 value. When nonzero,
+ * actions in clone will not change flow
+ * keys. False otherwise.
+ */
+
#endif /* _LINUX_OPENVSWITCH_H */