tunneling: Add generic Tunnel segmentation.

[platform/adaptation/renesas_rcar/renesas_kernel.git] / net / ipv4 / af_inet.c

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index dc3f677..9e5882c 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1283,6 +1283,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
        int ihl;
        int id;
        unsigned int offset = 0;
+       bool tunnel;
 
        if (unlikely(skb_shinfo(skb)->gso_type &
                     ~(SKB_GSO_TCPV4 |
@@ -1290,6 +1291,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
                       SKB_GSO_DODGY |
                       SKB_GSO_TCP_ECN |
                       SKB_GSO_GRE |
+                      SKB_GSO_UDP_TUNNEL |
                       0)))
                goto out;
 
@@ -1304,6 +1306,8 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
        if (unlikely(!pskb_may_pull(skb, ihl)))
                goto out;
 
+       tunnel = !!skb->encapsulation;
+
        __skb_pull(skb, ihl);
        skb_reset_transport_header(skb);
        iph = ip_hdr(skb);
@@ -1323,7 +1327,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
        skb = segs;
        do {
                iph = ip_hdr(skb);
-               if (proto == IPPROTO_UDP) {
+               if (!tunnel && proto == IPPROTO_UDP) {
                        iph->id = htons(id);
                        iph->frag_off = htons(offset >> 3);
                        if (skb->next != NULL)