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-rw-r--r--include/net/net_namespace.h1
-rw-r--r--include/net/netns/hash.h10
-rw-r--r--net/core/net_namespace.c1
3 files changed, 4 insertions, 8 deletions
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index a68ced28d8f4..12689ddfc24c 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -59,6 +59,7 @@ struct net {
*/
spinlock_t rules_mod_lock;
+ u32 hash_mix;
atomic64_t cookie_gen;
struct list_head list; /* list of network namespaces */
diff --git a/include/net/netns/hash.h b/include/net/netns/hash.h
index 16a842456189..d9b665151f3d 100644
--- a/include/net/netns/hash.h
+++ b/include/net/netns/hash.h
@@ -2,16 +2,10 @@
#ifndef __NET_NS_HASH_H__
#define __NET_NS_HASH_H__
-#include <asm/cache.h>
-
-struct net;
+#include <net/net_namespace.h>
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
+ return net->hash_mix;
}
#endif
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 17f36317363d..7e6dcc625701 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -304,6 +304,7 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns)
refcount_set(&net->count, 1);
refcount_set(&net->passive, 1);
+ get_random_bytes(&net->hash_mix, sizeof(u32));
net->dev_base_seq = 1;
net->user_ns = user_ns;
idr_init(&net->netns_ids);