1 files changed, 17 insertions, 0 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index cd0981977f5c..c6e29ea65bd9 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2476,6 +2476,23 @@ static DEFINE_PER_CPU(int, xmit_recursion);
 #define RECURSION_LIMIT 10
 
 /**
+ *      dev_loopback_xmit - loop back @skb
+ *      @skb: buffer to transmit
+ */
+int dev_loopback_xmit(struct sk_buff *skb)
+{
+        skb_reset_mac_header(skb);
+        __skb_pull(skb, skb_network_offset(skb));
+        skb->pkt_type = PACKET_LOOPBACK;
+        skb->ip_summed = CHECKSUM_UNNECESSARY;
+        WARN_ON(!skb_dst(skb));
+        skb_dst_force(skb);
+        netif_rx_ni(skb);
+        return 0;
+}
+EXPORT_SYMBOL(dev_loopback_xmit);
+
+/**
  *      dev_queue_xmit - transmit a buffer
  *      @skb: buffer to transmit
  *