3 files changed, 14 insertions, 15 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index d6b750a25078..d200dfbe1ef6 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -599,7 +599,7 @@ struct proto {
 
         union {
                 struct inet_hashinfo    *hashinfo;
-                struct hlist_head       *udp_hash;
+                struct udp_table        *udp_table;
                 struct raw_hashinfo     *raw_hash;
         } h;
 
diff --git a/include/net/udp.h b/include/net/udp.h
index 1e205095ea68..df2bfe545374 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -50,8 +50,15 @@ struct udp_skb_cb {
 };
 #define UDP_SKB_CB(__skb)       ((struct udp_skb_cb *)((__skb)->cb))
 
-extern struct hlist_head udp_hash[UDP_HTABLE_SIZE];
-extern rwlock_t udp_hash_lock;
+struct udp_hslot {
+        struct hlist_head       head;
+        spinlock_t              lock;
+} __attribute__((aligned(2 * sizeof(long))));
+struct udp_table {
+        struct udp_hslot        hash[UDP_HTABLE_SIZE];
+};
+extern struct udp_table udp_table;
+extern void udp_table_init(struct udp_table *);
 
 
 /* Note: this must match 'valbool' in sock_setsockopt */
@@ -110,15 +117,7 @@ static inline void udp_lib_hash(struct sock *sk)
         BUG();
 }
 
-static inline void udp_lib_unhash(struct sock *sk)
-{
-        write_lock_bh(&udp_hash_lock);
-        if (sk_del_node_init(sk)) {
-                inet_sk(sk)->num = 0;
-                sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
-        }
-        write_unlock_bh(&udp_hash_lock);
-}
+extern void udp_lib_unhash(struct sock *sk);
 
 static inline void udp_lib_close(struct sock *sk, long timeout)
 {
@@ -187,7 +186,7 @@ extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
 struct udp_seq_afinfo {
         char                    *name;
         sa_family_t             family;
-        struct hlist_head       *hashtable;
+        struct udp_table        *udp_table;
         struct file_operations  seq_fops;
         struct seq_operations   seq_ops;
 };
@@ -196,7 +195,7 @@ struct udp_iter_state {
         struct seq_net_private  p;
         sa_family_t             family;
         int                     bucket;
-        struct hlist_head       *hashtable;
+        struct udp_table        *udp_table;
 };
 
 #ifdef CONFIG_PROC_FS
diff --git a/include/net/udplite.h b/include/net/udplite.h
index b76b2e377af4..afdffe607b24 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -11,7 +11,7 @@
 #define UDPLITE_RECV_CSCOV   11 /* receiver partial coverage (threshold ) */
 
 extern struct proto             udplite_prot;
-extern struct hlist_head        udplite_hash[UDP_HTABLE_SIZE];
+extern struct udp_table         udplite_table;
 
 /*
  *      Checksum computation is all in software, hence simpler getfrag.