ipv4: dont drop packet in defrag but consume it

When defragmentation is finalized, we clone a packet and kfree_skb() it.

Call consume_skb() to not confuse dropwatch, since its not a drop.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 3727e23..631f596 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -569,7 +569,7 @@
 		skb_morph(head, qp->q.fragments);
 		head->next = qp->q.fragments->next;
 
-		kfree_skb(qp->q.fragments);
+		consume_skb(qp->q.fragments);
 		qp->q.fragments = head;
 	}