*/
#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>
#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
top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ?
0 : (iph->frag_off & htons(IP_DF));
if (!top_iph->frag_off)
- __ip_select_ident(top_iph, dst->child, 0);
+ __ip_select_ident(top_iph, dst, 0);
top_iph->ttl = dst_metric(dst->child, RTAX_HOPLIMIT);
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)
goto out_exit;
}
-static int xfrm4_output_finish2(struct sk_buff *skb)
+static int xfrm4_output_finish(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);
return dst_output(skb);
err = nf_hook(PF_INET, NF_IP_POST_ROUTING, &skb, NULL,
- skb->dst->dev, xfrm4_output_finish2);
+ skb->dst->dev, xfrm4_output_finish);
if (unlikely(err != 1))
break;
}
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,