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-rw-r--r--include/linux/if_tunnel.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index 06d1d5badd36..f4e56ecd0b1a 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -6,6 +6,13 @@
#include <uapi/linux/if_tunnel.h>
#include <linux/u64_stats_sync.h>
+/*
+ * Locking : hash tables are protected by RCU and RTNL
+ */
+
+#define for_each_ip_tunnel_rcu(pos, start) \
+ for (pos = rcu_dereference(start); pos; pos = rcu_dereference(pos->next))
+
/* often modified stats are per cpu, other are shared (netdev->stats) */
struct pcpu_tstats {
u64 rx_packets;