Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android

[firefly-linux-kernel-4.4.55.git] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index eb12bd0ff9d336c801c89197989ed75ce6c38b9b..caa6f158a0775d5dd86b6e76198dbca5290c33b0 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1398,6 +1398,19 @@ out:
        return pp;
 }
 
+static struct sk_buff **ipip_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 inet_gro_receive(head, skb);
+}
+
 int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 {
        if (sk->sk_family == AF_INET)
@@ -1440,6 +1453,13 @@ out_unlock:
        return err;
 }
 
+static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
+{
+       skb->encapsulation = 1;
+       skb_shinfo(skb)->gso_type |= SKB_GSO_IPIP;
+       return inet_gro_complete(skb, nhoff);
+}
+
 int inet_ctl_sock_create(struct sock **sk, unsigned short family,
                         unsigned short type, unsigned char protocol,
                         struct net *net)
@@ -1667,8 +1687,8 @@ static struct packet_offload ip_packet_offload __read_mostly = {
 static const struct net_offload ipip_offload = {
        .callbacks = {
                .gso_segment    = inet_gso_segment,
-               .gro_receive    = inet_gro_receive,
-               .gro_complete   = inet_gro_complete,
+               .gro_receive    = ipip_gro_receive,
+               .gro_complete   = ipip_gro_complete,
        },
 };