ipv4: Turn rt->rt_route_iif into rt->rt_is_input.

That is this value's only use, as a boolean to indicate whether
a route is an input route or not.

So implement it that way, using a u16 gap present in the struct
already.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/net/route.h b/include/net/route.h
index e789a92fd602..4bafe0bfe829 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -47,8 +47,8 @@ struct rtable {
         int                     rt_genid;
         unsigned int            rt_flags;
         __u16                   rt_type;
+        __u16                   rt_is_input;
 
-        int                     rt_route_iif;
         int                     rt_iif;
 
         /* Info on neighbour */
@@ -61,12 +61,12 @@ struct rtable {
 
 static inline bool rt_is_input_route(const struct rtable *rt)
 {
-        return rt->rt_route_iif != 0;
+        return rt->rt_is_input != 0;
 }
 
 static inline bool rt_is_output_route(const struct rtable *rt)
 {
-        return rt->rt_route_iif == 0;
+        return rt->rt_is_input == 0;
 }
 
 static inline __be32 rt_nexthop(const struct rtable *rt, __be32 daddr)