Merge to Fedora kernel-2.6.17-1.2187_FC5 patched with stable patch-2.6.17.13-vs2...

[linux-2.6.git] / net / ipv4 / xfrm4_output.c

diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 4ef8efa..ecc4119 100644 (file)
--- 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>
@@ -17,6 +19,8 @@
 #include <net/xfrm.h>
 #include <net/icmp.h>
 
+extern int skb_checksum_setup(struct sk_buff *skb);
+
 /* Add encapsulation header.
  *
  * In transport mode, the IP header will be moved forward to make space
@@ -103,6 +107,10 @@ static int xfrm4_output_one(struct sk_buff *skb)
        struct xfrm_state *x = dst->xfrm;
        int err;
        
+       err = skb_checksum_setup(skb);
+       if (err)
+               goto error_nolock;
+
        if (skb->ip_summed == CHECKSUM_HW) {
                err = skb_checksum_help(skb, 0);
                if (err)
@@ -152,16 +160,10 @@ 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);
 
@@ -174,7 +176,7 @@ 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;
        }
@@ -182,6 +184,48 @@ 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_is_gso(skb))
+               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,