/*
* xfrm4_output.c - Common IPsec encapsulation code for IPv4.
* Copyright (c) 2004 Herbert Xu <herbert@gondor.apana.org.au>
- *
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
#include <linux/if_ether.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
-#include <linux/spinlock.h>
#include <linux/netfilter_ipv4.h>
#include <net/ip.h>
#include <net/xfrm.h>
{
int mtu, ret = 0;
struct dst_entry *dst;
- struct iphdr *iph = skb->nh.iph;
if (IPCB(skb)->flags & IPSKB_XFRM_TUNNEL_SIZE)
goto out;
IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
-
- if (!(iph->frag_off & htons(IP_DF)) || skb->local_df)
+
+ if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
goto out;
dst = skb->dst;
return ret;
}
-static int xfrm4_output_one(struct sk_buff *skb)
+static inline int xfrm4_output_one(struct sk_buff *skb)
{
struct dst_entry *dst = skb->dst;
struct xfrm_state *x = dst->xfrm;
int err;
-
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- err = skb_checksum_help(skb);
- if (err)
- goto error_nolock;
- }
if (x->props.mode == XFRM_MODE_TUNNEL) {
err = xfrm4_tunnel_check_size(skb);
goto error_nolock;
}
- do {
- spin_lock_bh(&x->lock);
- err = xfrm_state_check(x, skb);
- if (err)
- goto error;
-
- err = x->mode->output(x, skb);
- if (err)
- goto error;
-
- err = x->type->output(x, skb);
- if (err)
- goto error;
-
- x->curlft.bytes += skb->len;
- x->curlft.packets++;
-
- spin_unlock_bh(&x->lock);
-
- if (!(skb->dst = dst_pop(dst))) {
- err = -EHOSTUNREACH;
- goto error_nolock;
- }
- dst = skb->dst;
- x = dst->xfrm;
- } while (x && (x->props.mode != XFRM_MODE_TUNNEL));
+ err = xfrm_output(skb);
+ if (err)
+ goto error_nolock;
IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
err = 0;
out_exit:
return err;
-error:
- spin_unlock_bh(&x->lock);
error_nolock:
kfree_skb(skb);
goto out_exit;