ipv6 sit: RCU conversion phase I

SIT tunnels use one rwlock to protect their prl entries.

This first patch adds RCU locking for prl management,
with standard call_rcu() calls.

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/net/ipip.h b/include/net/ipip.h
index 86f1c8bd040c..b3db2fd6e61c 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -45,6 +45,7 @@ struct ip_tunnel_prl_entry
         struct ip_tunnel_prl_entry      *next;
         __be32                          addr;
         u16                             flags;
+        struct rcu_head                 rcu_head;
 };
 
 #define IPTUNNEL_XMIT() do {                                            \