mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 22:21:40 +00:00
7d4343d501
After recent change 'x' is only used when CONFIG_NETFILTER is set:
net/ipv4/xfrm4_output.c: In function '__xfrm4_output':
net/ipv4/xfrm4_output.c:19:21: warning: unused variable 'x' [-Wunused-variable]
19 | struct xfrm_state *x = skb_dst(skb)->xfrm;
Expand the CONFIG_NETFILTER scope to avoid this.
Fixes: 2ab6096db2 ("xfrm: remove output_finish indirection from xfrm_state_afinfo")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* xfrm4_output.c - Common IPsec encapsulation code for IPv4.
|
|
* Copyright (c) 2004 Herbert Xu <herbert@gondor.apana.org.au>
|
|
*/
|
|
|
|
#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>
|
|
|
|
static int __xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
#ifdef CONFIG_NETFILTER
|
|
struct xfrm_state *x = skb_dst(skb)->xfrm;
|
|
|
|
if (!x) {
|
|
IPCB(skb)->flags |= IPSKB_REROUTED;
|
|
return dst_output(net, sk, skb);
|
|
}
|
|
#endif
|
|
|
|
return xfrm_output(sk, skb);
|
|
}
|
|
|
|
int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb)
|
|
{
|
|
return NF_HOOK_COND(NFPROTO_IPV4, NF_INET_POST_ROUTING,
|
|
net, sk, skb, skb->dev, skb_dst(skb)->dev,
|
|
__xfrm4_output,
|
|
!(IPCB(skb)->flags & IPSKB_REROUTED));
|
|
}
|
|
|
|
void xfrm4_local_error(struct sk_buff *skb, u32 mtu)
|
|
{
|
|
struct iphdr *hdr;
|
|
|
|
hdr = skb->encapsulation ? inner_ip_hdr(skb) : ip_hdr(skb);
|
|
ip_local_error(skb->sk, EMSGSIZE, hdr->daddr,
|
|
inet_sk(skb->sk)->inet_dport, mtu);
|
|
}
|