1 files changed, 36 insertions, 1 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index d200dfbe1ef6..0bea25db5471 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -363,6 +363,27 @@ static __inline__ int sk_del_node_init(struct sock *sk)
         return rc;
 }
 
+static __inline__ int __sk_del_node_init_rcu(struct sock *sk)
+{
+        if (sk_hashed(sk)) {
+                hlist_del_init_rcu(&sk->sk_node);
+                return 1;
+        }
+        return 0;
+}
+
+static __inline__ int sk_del_node_init_rcu(struct sock *sk)
+{
+        int rc = __sk_del_node_init_rcu(sk);
+
+        if (rc) {
+                /* paranoid for a while -acme */
+                WARN_ON(atomic_read(&sk->sk_refcnt) == 1);
+                __sock_put(sk);
+        }
+        return rc;
+}
+
 static __inline__ void __sk_add_node(struct sock *sk, struct hlist_head *list)
 {
         hlist_add_head(&sk->sk_node, list);
@@ -374,6 +395,17 @@ static __inline__ void sk_add_node(struct sock *sk, struct hlist_head *list)
         __sk_add_node(sk, list);
 }
 
+static __inline__ void __sk_add_node_rcu(struct sock *sk, struct hlist_head *list)
+{
+        hlist_add_head_rcu(&sk->sk_node, list);
+}
+
+static __inline__ void sk_add_node_rcu(struct sock *sk, struct hlist_head *list)
+{
+        sock_hold(sk);
+        __sk_add_node_rcu(sk, list);
+}
+
 static __inline__ void __sk_del_bind_node(struct sock *sk)
 {
         __hlist_del(&sk->sk_bind_node);
@@ -387,6 +419,8 @@ static __inline__ void sk_add_bind_node(struct sock *sk,
 
 #define sk_for_each(__sk, node, list) \
         hlist_for_each_entry(__sk, node, list, sk_node)
+#define sk_for_each_rcu(__sk, node, list) \
+        hlist_for_each_entry_rcu(__sk, node, list, sk_node)
 #define sk_for_each_from(__sk, node) \
         if (__sk && ({ node = &(__sk)->sk_node; 1; })) \
                 hlist_for_each_entry_from(__sk, node, sk_node)
@@ -589,8 +623,9 @@ struct proto {
         int                     *sysctl_rmem;
         int                     max_header;
 
-        struct kmem_cache               *slab;
+        struct kmem_cache       *slab;
         unsigned int            obj_size;
+        int                     slab_flags;
 
         atomic_t                *orphan_count;