1 files changed, 15 insertions, 2 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index a39354ee1432..83988362805e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1642,6 +1642,19 @@ static inline int deliver_skb(struct sk_buff *skb,
         return pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
 }
 
+static inline bool skb_loop_sk(struct packet_type *ptype, struct sk_buff *skb)
+{
+        if (ptype->af_packet_priv == NULL)
+                return false;
+
+        if (ptype->id_match)
+                return ptype->id_match(ptype, skb->sk);
+        else if ((struct sock *)ptype->af_packet_priv == skb->sk)
+                return true;
+
+        return false;
+}
+
 /*
  *      Support routine. Sends outgoing frames to any network
  *      taps currently in use.
@@ -1659,8 +1672,7 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
                  * they originated from - MvS (miquels@drinkel.ow.org)
                  */
                 if ((ptype->dev == dev || !ptype->dev) &&
-                    (ptype->af_packet_priv == NULL ||
-                     (struct sock *)ptype->af_packet_priv != skb->sk)) {
+                    (!skb_loop_sk(ptype, skb))) {
                         if (pt_prev) {
                                 deliver_skb(skb2, pt_prev, skb->dev);
                                 pt_prev = ptype;
@@ -5732,6 +5744,7 @@ EXPORT_SYMBOL(netdev_refcnt_read);
 
 /**
  * netdev_wait_allrefs - wait until all references are gone.
+ * @dev: target net_device
  *
  * This is called when unregistering network devices.
  *