1 files changed, 15 insertions, 3 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 766e6bab9113..74d2c95db57f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -704,7 +704,7 @@ EXPORT_SYMBOL(udp_flush_pending_frames);
  *      @src:   source IP address
  *      @dst:   destination IP address
  */
-static void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
+void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
 {
         struct udphdr *uh = udp_hdr(skb);
         struct sk_buff *frags = skb_shinfo(skb)->frag_list;
@@ -740,6 +740,7 @@ static void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
                         uh->check = CSUM_MANGLED_0;
         }
 }
+EXPORT_SYMBOL_GPL(udp4_hwcsum);
 
 static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4)
 {
@@ -2158,7 +2159,7 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
         __u16 srcp        = ntohs(inet->inet_sport);
 
         seq_printf(f, "%5d: %08X:%04X %08X:%04X"
-                " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d%n",
+                " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d%n",
                 bucket, src, srcp, dest, destp, sp->sk_state,
                 sk_wmem_alloc_get(sp),
                 sk_rmem_alloc_get(sp),
@@ -2336,7 +2337,7 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
                 uh->len = htons(skb->len - udp_offset);
 
                 /* csum segment if tunnel sets skb with csum. */
-                if (unlikely(uh->check)) {
+                if (protocol == htons(ETH_P_IP) && unlikely(uh->check)) {
                         struct iphdr *iph = ip_hdr(skb);
 
                         uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
@@ -2347,7 +2348,18 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
                         if (uh->check == 0)
                                 uh->check = CSUM_MANGLED_0;
 
+                } else if (protocol == htons(ETH_P_IPV6)) {
+                        struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+                        u32 len = skb->len - udp_offset;
+
+                        uh->check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr,
+                                                     len, IPPROTO_UDP, 0);
+                        uh->check = csum_fold(skb_checksum(skb, udp_offset, len, 0));
+                        if (uh->check == 0)
+                                uh->check = CSUM_MANGLED_0;
+                        skb->ip_summed = CHECKSUM_NONE;
                 }
+
                 skb->protocol = protocol;
         } while ((skb = skb->next));
 out: