Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jozsef Kadlecsik |
188 |
32.08% |
2 |
4.44% |
| Florian Westphal |
176 |
30.03% |
10 |
22.22% |
| Patrick McHardy |
76 |
12.97% |
8 |
17.78% |
| Yasuyuki Kozakai |
52 |
8.87% |
4 |
8.89% |
| Pablo Neira Ayuso |
31 |
5.29% |
5 |
11.11% |
| Changli Gao |
23 |
3.92% |
4 |
8.89% |
| Linus Torvalds (pre-git) |
14 |
2.39% |
3 |
6.67% |
| Xin Long |
9 |
1.54% |
1 |
2.22% |
| Jeremy Sowden |
6 |
1.02% |
2 |
4.44% |
| Alexey Dobriyan |
5 |
0.85% |
1 |
2.22% |
| Thierry Du Tre |
2 |
0.34% |
1 |
2.22% |
| Harald Welte |
1 |
0.17% |
1 |
2.22% |
| Herbert Xu |
1 |
0.17% |
1 |
2.22% |
| Greg Kroah-Hartman |
1 |
0.17% |
1 |
2.22% |
| James Yonan |
1 |
0.17% |
1 |
2.22% |
| Total |
586 |
|
45 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_NAT_H
#define _NF_NAT_H
#include <linux/list.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter/nf_conntrack_pptp.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_extend.h>
#include <net/netfilter/nf_conntrack_tuple.h>
#include <uapi/linux/netfilter/nf_nat.h>
enum nf_nat_manip_type {
NF_NAT_MANIP_SRC,
NF_NAT_MANIP_DST
};
/* SRC manip occurs POST_ROUTING or LOCAL_IN */
#define HOOK2MANIP(hooknum) ((hooknum) != NF_INET_POST_ROUTING && \
(hooknum) != NF_INET_LOCAL_IN)
/* per conntrack: nat application helper private data */
union nf_conntrack_nat_help {
/* insert nat helper private data here */
#if IS_ENABLED(CONFIG_NF_NAT_PPTP)
struct nf_nat_pptp nat_pptp_info;
#endif
};
/* The structure embedded in the conntrack structure. */
struct nf_conn_nat {
union nf_conntrack_nat_help help;
#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE)
int masq_index;
#endif
};
/* Set up the info structure to map into this range. */
unsigned int nf_nat_setup_info(struct nf_conn *ct,
const struct nf_nat_range2 *range,
enum nf_nat_manip_type maniptype);
extern unsigned int nf_nat_alloc_null_binding(struct nf_conn *ct,
unsigned int hooknum);
struct nf_conn_nat *nf_ct_nat_ext_add(struct nf_conn *ct);
static inline struct nf_conn_nat *nfct_nat(const struct nf_conn *ct)
{
#if IS_ENABLED(CONFIG_NF_NAT)
return nf_ct_ext_find(ct, NF_CT_EXT_NAT);
#else
return NULL;
#endif
}
static inline bool nf_nat_oif_changed(unsigned int hooknum,
enum ip_conntrack_info ctinfo,
struct nf_conn_nat *nat,
const struct net_device *out)
{
#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE)
return nat && nat->masq_index && hooknum == NF_INET_POST_ROUTING &&
CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL &&
nat->masq_index != out->ifindex;
#else
return false;
#endif
}
int nf_nat_register_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops,
const struct nf_hook_ops *nat_ops, unsigned int ops_count);
void nf_nat_unregister_fn(struct net *net, u8 pf, const struct nf_hook_ops *ops,
unsigned int ops_count);
unsigned int nf_nat_packet(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
unsigned int hooknum, struct sk_buff *skb);
unsigned int nf_nat_manip_pkt(struct sk_buff *skb, struct nf_conn *ct,
enum nf_nat_manip_type mtype,
enum ip_conntrack_dir dir);
void nf_nat_csum_recalc(struct sk_buff *skb,
u8 nfproto, u8 proto, void *data, __sum16 *check,
int datalen, int oldlen);
int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum);
int nf_nat_icmpv6_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int hooknum, unsigned int hdrlen);
int nf_nat_ipv4_register_fn(struct net *net, const struct nf_hook_ops *ops);
void nf_nat_ipv4_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
int nf_nat_ipv6_register_fn(struct net *net, const struct nf_hook_ops *ops);
void nf_nat_ipv6_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
int nf_nat_inet_register_fn(struct net *net, const struct nf_hook_ops *ops);
void nf_nat_inet_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
unsigned int
nf_nat_inet_fn(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state);
int nf_ct_nat(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo, int *action,
const struct nf_nat_range2 *range, bool commit);
static inline int nf_nat_initialized(const struct nf_conn *ct,
enum nf_nat_manip_type manip)
{
if (manip == NF_NAT_MANIP_SRC)
return ct->status & IPS_SRC_NAT_DONE;
else
return ct->status & IPS_DST_NAT_DONE;
}
#endif