* 2 of the License, or (at your option) any later version.
*/
-#include <linux/compiler.h>
#include <linux/if_ether.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter_ipv4.h>
+#include <net/dst.h>
#include <net/ip.h>
#include <net/xfrm.h>
#include <net/icmp.h>
if (IPCB(skb)->flags & IPSKB_XFRM_TUNNEL_SIZE)
goto out;
- IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
-
if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
goto out;
return ret;
}
-static inline int xfrm4_output_one(struct sk_buff *skb)
+int xfrm4_extract_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
- struct xfrm_state *x = dst->xfrm;
- struct iphdr *iph;
int err;
- if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
- err = xfrm4_tunnel_check_size(skb);
- if (err)
- goto error_nolock;
- }
+ err = xfrm4_tunnel_check_size(skb);
+ if (err)
+ return err;
+
+ return xfrm4_extract_header(skb);
+}
+
+int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb)
+{
+ int err;
+
+ err = x->inner_mode->afinfo->extract_output(x, skb);
+ if (err)
+ return err;
+
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+ IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
+
+ skb->protocol = htons(ETH_P_IP);
+
+ return x->outer_mode->output2(x, skb);
+}
+EXPORT_SYMBOL(xfrm4_prepare_output);
+
+static inline int xfrm4_output_one(struct sk_buff *skb)
+{
+ int err;
err = xfrm_output(skb);
if (err)
goto error_nolock;
- iph = ip_hdr(skb);
- iph->tot_len = htons(skb->len);
- ip_send_check(iph);
-
IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
err = 0;
while (likely((err = xfrm4_output_one(skb)) == 0)) {
nf_reset(skb);
- err = nf_hook(PF_INET, NF_IP_LOCAL_OUT, skb, NULL,
- skb->dst->dev, dst_output);
+ err = __ip_local_out(skb);
if (unlikely(err != 1))
break;