[IPSEC] Turn km_event.data into a union

This patch turns km_event.data into a union.  This makes code that
uses it clearer.
  
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index aaa0f5f330e2..fda356e81014 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -173,7 +173,12 @@ enum {
 /* callback structure passed from either netlink or pfkey */
 struct km_event
 {
-        u32     data;
+        union {
+                u32 hard;
+                u32 proto;
+                u32 byid;
+        } data;
+
         u32     seq;
         u32     pid;
         u32     event;