1 files changed, 46 insertions, 8 deletions

diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index ac9d91d4bb05..193363e22932 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -9,6 +9,8 @@
  */
 
 #include <linux/compiler.h>
+#include <linux/if_ether.h>
+#include <linux/kernel.h>
 #include <linux/skbuff.h>
 #include <linux/spinlock.h>
 #include <linux/netfilter_ipv4.h>
@@ -97,16 +99,10 @@ error_nolock:
         goto out_exit;
 }
 
-static int xfrm4_output_finish(struct sk_buff *skb)
+static int xfrm4_output_finish2(struct sk_buff *skb)
 {
         int err;
 
-#ifdef CONFIG_NETFILTER
-        if (!skb->dst->xfrm) {
-                IPCB(skb)->flags |= IPSKB_REROUTED;
-                return dst_output(skb);
-        }
-#endif
         while (likely((err = xfrm4_output_one(skb)) == 0)) {
                 nf_reset(skb);
 
@@ -119,7 +115,7 @@ static int xfrm4_output_finish(struct sk_buff *skb)
                         return dst_output(skb);
 
                 err = nf_hook(PF_INET, NF_IP_POST_ROUTING, &skb, NULL,
-                              skb->dst->dev, xfrm4_output_finish);
+                              skb->dst->dev, xfrm4_output_finish2);
                 if (unlikely(err != 1))
                         break;
         }
@@ -127,6 +123,48 @@ static int xfrm4_output_finish(struct sk_buff *skb)
         return err;
 }
 
+static int xfrm4_output_finish(struct sk_buff *skb)
+{
+        struct sk_buff *segs;
+
+#ifdef CONFIG_NETFILTER
+        if (!skb->dst->xfrm) {
+                IPCB(skb)->flags |= IPSKB_REROUTED;
+                return dst_output(skb);
+        }
+#endif
+
+        if (!skb_shinfo(skb)->gso_size)
+                return xfrm4_output_finish2(skb);
+
+        skb->protocol = htons(ETH_P_IP);
+        segs = skb_gso_segment(skb, 0);
+        kfree_skb(skb);
+        if (unlikely(IS_ERR(segs)))
+                return PTR_ERR(segs);
+
+        do {
+                struct sk_buff *nskb = segs->next;
+                int err;
+
+                segs->next = NULL;
+                err = xfrm4_output_finish2(segs);
+
+                if (unlikely(err)) {
+                        while ((segs = nskb)) {
+                                nskb = segs->next;
+                                segs->next = NULL;
+                                kfree_skb(segs);
+                        }
+                        return err;
+                }
+
+                segs = nskb;
+        } while (segs);
+
+        return 0;
+}
+
 int xfrm4_output(struct sk_buff *skb)
 {
         return NF_HOOK_COND(PF_INET, NF_IP_POST_ROUTING, skb, NULL, skb->dst->dev,