1 files changed, 10 insertions, 0 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index 314c47a8f5d1..577d91fb5626 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -368,6 +368,7 @@ struct sock {
         atomic_t                sk_drops;
         int                     sk_rcvlowat;
         struct sk_buff_head     sk_error_queue;
+        struct sk_buff          *sk_rx_skb_cache;
         struct sk_buff_head     sk_receive_queue;
         /*
          * The backlog queue is special, it is always used with
@@ -2438,6 +2439,15 @@ static inline void skb_setup_tx_timestamp(struct sk_buff *skb, __u16 tsflags)
 static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb)
 {
         __skb_unlink(skb, &sk->sk_receive_queue);
+        if (
+#ifdef CONFIG_RPS
+            !static_branch_unlikely(&rps_needed) &&
+#endif
+            !sk->sk_rx_skb_cache) {
+                sk->sk_rx_skb_cache = skb;
+                skb_orphan(skb);
+                return;
+        }
         __kfree_skb(skb);
 }