3 files changed, 14 insertions, 11 deletions

diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 4dfb793c3f15..6c3f964de9e1 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -91,8 +91,7 @@ struct nf_conn_help {
 #include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
 #include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
 
-struct nf_conn
-{
+struct nf_conn {
         /* Usage count in here is 1 for hash table/destruct timer, 1 per skb,
            plus 1 for any connection(s) we are `master' for */
         struct nf_conntrack ct_general;
@@ -126,7 +125,6 @@ struct nf_conn
 #ifdef CONFIG_NET_NS
         struct net *ct_net;
 #endif
-        struct rcu_head rcu;
 };
 
 static inline struct nf_conn *
@@ -190,9 +188,13 @@ static inline void nf_ct_put(struct nf_conn *ct)
 extern int nf_ct_l3proto_try_module_get(unsigned short l3proto);
 extern void nf_ct_l3proto_module_put(unsigned short l3proto);
 
-extern struct hlist_head *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced);
-extern void nf_ct_free_hashtable(struct hlist_head *hash, int vmalloced,
-                                 unsigned int size);
+/*
+ * Allocate a hashtable of hlist_head (if nulls == 0),
+ * or hlist_nulls_head (if nulls == 1)
+ */
+extern void *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced, int nulls);
+
+extern void nf_ct_free_hashtable(void *hash, int vmalloced, unsigned int size);
 
 extern struct nf_conntrack_tuple_hash *
 __nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);
diff --git a/include/net/netfilter/nf_conntrack_tuple.h b/include/net/netfilter/nf_conntrack_tuple.h
index f2f6aa73dc10..2628c154d40e 100644
--- a/include/net/netfilter/nf_conntrack_tuple.h
+++ b/include/net/netfilter/nf_conntrack_tuple.h
@@ -12,6 +12,7 @@
 
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/nf_conntrack_tuple_common.h>
+#include <linux/list_nulls.h>
 
 /* A `tuple' is a structure containing the information to uniquely
   identify a connection.  ie. if two packets have the same tuple, they
@@ -146,9 +147,8 @@ static inline void nf_ct_dump_tuple(const struct nf_conntrack_tuple *t)
         ((enum ip_conntrack_dir)(h)->tuple.dst.dir)
 
 /* Connections have two entries in the hash table: one for each way */
-struct nf_conntrack_tuple_hash
-{
-        struct hlist_node hnode;
+struct nf_conntrack_tuple_hash {
+        struct hlist_nulls_node hnnode;
         struct nf_conntrack_tuple tuple;
 };
 
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index f4498a62881b..9dc58402bc09 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -2,6 +2,7 @@
 #define __NETNS_CONNTRACK_H
 
 #include <linux/list.h>
+#include <linux/list_nulls.h>
 #include <asm/atomic.h>
 
 struct ctl_table_header;
@@ -10,9 +11,9 @@ struct nf_conntrack_ecache;
 struct netns_ct {
         atomic_t                count;
         unsigned int            expect_count;
-        struct hlist_head       *hash;
+        struct hlist_nulls_head *hash;
         struct hlist_head       *expect_hash;
-        struct hlist_head       unconfirmed;
+        struct hlist_nulls_head unconfirmed;
         struct ip_conntrack_stat *stat;
 #ifdef CONFIG_NF_CONNTRACK_EVENTS
         struct nf_conntrack_ecache *ecache;