1 files changed, 31 insertions, 17 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 324b3ea233d6..edd4d73ce7f5 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -862,30 +862,24 @@ extern void sock_init_data(struct socket *sock, struct sock *sk);
  *
  */
 
-static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
+static inline int sk_filter(struct sock *sk, struct sk_buff *skb)
 {
         int err;
+        struct sk_filter *filter;
         
         err = security_sock_rcv_skb(sk, skb);
         if (err)
                 return err;
         
-        if (sk->sk_filter) {
-                struct sk_filter *filter;
-                
-                if (needlock)
-                        bh_lock_sock(sk);
-                
-                filter = sk->sk_filter;
-                if (filter) {
-                        unsigned int pkt_len = sk_run_filter(skb, filter->insns,
-                                                             filter->len);
-                        err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
-                }
-
-                if (needlock)
-                        bh_unlock_sock(sk);
+        rcu_read_lock_bh();
+        filter = sk->sk_filter;
+        if (filter) {
+                unsigned int pkt_len = sk_run_filter(skb, filter->insns,
+                                filter->len);
+                err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
         }
+        rcu_read_unlock_bh();
+
         return err;
 }
 
@@ -897,6 +891,12 @@ static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
  *      Remove a filter from a socket and release its resources.
  */
  
+static inline void sk_filter_rcu_free(struct rcu_head *rcu)
+{
+        struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
+        kfree(fp);
+}
+
 static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp)
 {
         unsigned int size = sk_filter_len(fp);
@@ -904,7 +904,7 @@ static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp)
         atomic_sub(size, &sk->sk_omem_alloc);
 
         if (atomic_dec_and_test(&fp->refcnt))
-                kfree(fp);
+                call_rcu_bh(&fp->rcu, sk_filter_rcu_free);
 }
 
 static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp)
@@ -969,9 +969,23 @@ static inline void sock_graft(struct sock *sk, struct socket *parent)
         sk->sk_sleep = &parent->wait;
         parent->sk = sk;
         sk->sk_socket = parent;
+        security_sock_graft(sk, parent);
         write_unlock_bh(&sk->sk_callback_lock);
 }
 
+static inline void sock_copy(struct sock *nsk, const struct sock *osk)
+{
+#ifdef CONFIG_SECURITY_NETWORK
+        void *sptr = nsk->sk_security;
+#endif
+
+        memcpy(nsk, osk, osk->sk_prot->obj_size);
+#ifdef CONFIG_SECURITY_NETWORK
+        nsk->sk_security = sptr;
+        security_sk_clone(osk, nsk);
+#endif
+}
+
 extern int sock_i_uid(struct sock *sk);
 extern unsigned long sock_i_ino(struct sock *sk);