1 files changed, 16 insertions, 4 deletions

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 1e64dabbd232..ce231780a2b1 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -287,12 +287,8 @@ int ip_ra_control(struct sock *sk, unsigned char on,
 void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
                    __be16 port, u32 info, u8 *payload)
 {
-        struct inet_sock *inet = inet_sk(sk);
         struct sock_exterr_skb *serr;
 
-        if (!inet->recverr)
-                return;
-
         skb = skb_clone(skb, GFP_ATOMIC);
         if (!skb)
                 return;
@@ -958,6 +954,22 @@ e_inval:
         return -EINVAL;
 }
 
+/**
+ * ip_queue_rcv_skb - Queue an skb into sock receive queue
+ * @sk: socket
+ * @skb: buffer
+ *
+ * Queues an skb into socket receive queue. If IP_CMSG_PKTINFO option
+ * is not set, we drop skb dst entry now, while dst cache line is hot.
+ */
+int ip_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+        if (!(inet_sk(sk)->cmsg_flags & IP_CMSG_PKTINFO))
+                skb_dst_drop(skb);
+        return sock_queue_rcv_skb(sk, skb);
+}
+EXPORT_SYMBOL(ip_queue_rcv_skb);
+
 int ip_setsockopt(struct sock *sk, int level,
                 int optname, char __user *optval, unsigned int optlen)
 {