1 files changed, 14 insertions, 1 deletions

diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index eeca943f12dc..82e9f3076028 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -258,6 +258,19 @@ out:
         return pp;
 }
 
+static struct sk_buff **sit_gro_receive(struct sk_buff **head,
+                                        struct sk_buff *skb)
+{
+        if (NAPI_GRO_CB(skb)->encap_mark) {
+                NAPI_GRO_CB(skb)->flush = 1;
+                return NULL;
+        }
+
+        NAPI_GRO_CB(skb)->encap_mark = 1;
+
+        return ipv6_gro_receive(head, skb);
+}
+
 static int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
 {
         const struct net_offload *ops;
@@ -302,7 +315,7 @@ static struct packet_offload ipv6_packet_offload __read_mostly = {
 static const struct net_offload sit_offload = {
         .callbacks = {
                 .gso_segment    = ipv6_gso_segment,
-                .gro_receive    = ipv6_gro_receive,
+                .gro_receive    = sit_gro_receive,
                 .gro_complete   = sit_gro_complete,
         },
 };