ipmr: RCU protection for mfc_cache_array

Use RCU & RTNL protection for mfc_cache_array[]

ipmr_cache_find() is called under rcu_read_lock();

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mroute.h b/include/linux/mroute.h
index fa04b246c9ae..0fa7a3a874c8 100644
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -213,6 +213,7 @@ struct mfc_cache {
                         unsigned char ttls[MAXVIFS];    /* TTL thresholds               */
                 } res;
         } mfc_un;
+        struct rcu_head rcu;
 };
 
 #define MFC_STATIC              1