swh:1:snp:32555a3fd8878f019c2ebd6c964bc1edcaeff337
Tip revision: 979570e02981d4a8fc20b3cc8fd651856c98ee9d authored by Linus Torvalds on 24 September 2012, 01:10:57 UTC
Linux 3.6-rc7
Linux 3.6-rc7
Tip revision: 979570e
nf_nat_helper.h
#ifndef _NF_NAT_HELPER_H
#define _NF_NAT_HELPER_H
/* NAT protocol helper routines. */
#include <net/netfilter/nf_conntrack.h>
struct sk_buff;
/* These return true or false. */
extern int __nf_nat_mangle_tcp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
unsigned int match_len,
const char *rep_buffer,
unsigned int rep_len, bool adjust);
static inline int nf_nat_mangle_tcp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
unsigned int match_len,
const char *rep_buffer,
unsigned int rep_len)
{
return __nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
match_offset, match_len,
rep_buffer, rep_len, true);
}
extern int nf_nat_mangle_udp_packet(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int match_offset,
unsigned int match_len,
const char *rep_buffer,
unsigned int rep_len);
extern void nf_nat_set_seq_adjust(struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
__be32 seq, s16 off);
extern int nf_nat_seq_adjust(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo);
extern int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo);
/* Setup NAT on this expected conntrack so it follows master, but goes
* to port ct->master->saved_proto. */
extern void nf_nat_follow_master(struct nf_conn *ct,
struct nf_conntrack_expect *this);
extern s16 nf_nat_get_offset(const struct nf_conn *ct,
enum ip_conntrack_dir dir,
u32 seq);
extern void nf_nat_tcp_seq_adjust(struct sk_buff *skb, struct nf_conn *ct,
u32 dir, int off);
#endif