include/net/netns/hash.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_NS_HASH_H__
   3 #define __NET_NS_HASH_H__
   4
   5 #include <asm/cache.h>
   6
   7 struct net;
   8
   9 static inline u32 net_hash_mix(const struct net *net)
  10 {
  11 #ifdef CONFIG_NET_NS
  12         /*
  13          * shift this right to eliminate bits, that are
  14          * always zeroed
  15          */
  16
  17         return (u32)(((unsigned long)net) >> L1_CACHE_SHIFT);
  18 #else
  19         return 0;
  20 #endif
  21 }
  22 #endif