1 files changed, 15 insertions, 5 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index c9fad6fb629b..96565ff0de6a 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -132,6 +132,7 @@ struct sock_common {
   *     @sk_receive_queue: incoming packets
   *     @sk_wmem_alloc: transmit queue bytes committed
   *     @sk_write_queue: Packet sending queue
+  *     @sk_async_wait_queue: DMA copied packets
   *     @sk_omem_alloc: "o" is "option" or "other"
   *     @sk_wmem_queued: persistent queue size
   *     @sk_forward_alloc: space allocated forward
@@ -205,6 +206,7 @@ struct sock {
         atomic_t                sk_omem_alloc;
         struct sk_buff_head     sk_receive_queue;
         struct sk_buff_head     sk_write_queue;
+        struct sk_buff_head     sk_async_wait_queue;
         int                     sk_wmem_queued;
         int                     sk_forward_alloc;
         gfp_t                   sk_allocation;
@@ -871,10 +873,7 @@ static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
                 if (filter) {
                         unsigned int pkt_len = sk_run_filter(skb, filter->insns,
                                                              filter->len);
-                        if (!pkt_len)
-                                err = -EPERM;
-                        else
-                                skb_trim(skb, pkt_len);
+                        err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
                 }
 
                 if (needlock)
@@ -1271,11 +1270,22 @@ sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
  * This routine must be called with interrupts disabled or with the socket
  * locked so that the sk_buff queue operation is ok.
 */
-static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb)
+#ifdef CONFIG_NET_DMA
+static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_early)
+{
+        __skb_unlink(skb, &sk->sk_receive_queue);
+        if (!copied_early)
+                __kfree_skb(skb);
+        else
+                __skb_queue_tail(&sk->sk_async_wait_queue, skb);
+}
+#else
+static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb, int copied_early)
 {
         __skb_unlink(skb, &sk->sk_receive_queue);
         __kfree_skb(skb);
 }
+#endif
 
 extern void sock_enable_timestamp(struct sock *sk);
 extern int sock_get_timestamp(struct sock *, struct timeval __user *);