#ifndef __NET_NS_HASH_H__#define __NET_NS_HASH_H__#include<asm/cache.h>structnet;staticinlineunsignedintnet_hash_mix(structnet*net){#ifdef CONFIG_NET_NS/* * shift this right to eliminate bits, that are * always zeroed */return(unsigned)(((unsignedlong)net)>>L1_CACHE_SHIFT);#elsereturn0;#endif}#endif