ipv4: make sure nh_pcpu_rth_output is always allocated

Avoid checking nh_pcpu_rth_output in fast path,
abort fib_info creation on alloc_percpu failure.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 3 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b90da1bc2704..5b0180f11b20 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1207,8 +1207,6 @@ static bool rt_cache_route(struct fib_nh *nh, struct rtable *rt)
         if (rt_is_input_route(rt)) {
                 p = (struct rtable **)&nh->nh_rth_input;
         } else {
-                if (!nh->nh_pcpu_rth_output)
-                        goto nocache;
                 p = (struct rtable **)__this_cpu_ptr(nh->nh_pcpu_rth_output);
         }
         orig = *p;
@@ -1223,7 +1221,6 @@ static bool rt_cache_route(struct fib_nh *nh, struct rtable *rt)
                  * unsuccessful at storing this route into the cache
                  * we really need to set it.
                  */
-nocache:
                 rt->dst.flags |= DST_NOCACHE;
                 ret = false;
         }