1 files changed, 21 insertions, 0 deletions

diff --git a/include/net/netns/hash.h b/include/net/netns/hash.h
new file mode 100644
index 000000000000..548d78f2cc47
--- /dev/null
+++ b/include/net/netns/hash.h
@@ -0,0 +1,21 @@
+#ifndef __NET_NS_HASH_H__
+#define __NET_NS_HASH_H__
+
+#include <asm/cache.h>
+
+struct net;
+
+static inline unsigned net_hash_mix(struct net *net)
+{
+#ifdef CONFIG_NET_NS
+        /*
+         * shift this right to eliminate bits, that are
+         * always zeroed
+         */
+
+        return (unsigned)(((unsigned long)net) >> L1_CACHE_SHIFT);
+#else
+        return 0;
+#endif
+}
+#endif