include/net/netns/hash.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_NS_HASH_H__
#define __NET_NS_HASH_H__

#include <asm/cache.h>

struct net;

static inline u32 net_hash_mix(const struct net *net)
{
#ifdef CONFIG_NET_NS
	return (u32)(((unsigned long)net) >> ilog2(sizeof(*net)));
#else
	return 0;
#endif
}
#endif
License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-01 15:07:57 +01:00			`/* SPDX-License-Identifier: GPL-2.0 */`
netns: introduce the net_hash_mix "salt" for hashes 2008-06-16 17:14:11 -07:00			`#ifndef __NET_NS_HASH_H__`
			`#define __NET_NS_HASH_H__`

			`#include <asm/cache.h>`

			`struct net;`

netns: constify net_hash_mix() and various callers 2015-03-18 14:05:33 -07:00			`static inline u32 net_hash_mix(const struct net *net)`
netns: introduce the net_hash_mix "salt" for hashes 2008-06-16 17:14:11 -07:00			`{`
			`#ifdef CONFIG_NET_NS`
netns: get more entropy from net_hash_mix() 2018-06-22 16:27:47 -07:00			`return (u32)(((unsigned long)net) >> ilog2(sizeof(*net)));`
netns: introduce the net_hash_mix "salt" for hashes 2008-06-16 17:14:11 -07:00			`#else`
			`return 0;`
			`#endif`
			`}`
			`#endif`