Release 4.18 include/net/netfilter/nf_nat.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_NAT_H
#define _NF_NAT_H
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter/nf_nat.h>
#include <net/netfilter/nf_conntrack_tuple.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)
#include <linux/list.h>
#include <linux/netfilter/nf_conntrack_pptp.h>
#include <net/netfilter/nf_conntrack_extend.h>
/* per conntrack: nat application helper private data */
union nf_conntrack_nat_help {
/* insert nat helper private data here */
#if defined(CONFIG_NF_NAT_PPTP) || defined(CONFIG_NF_NAT_PPTP_MODULE)
struct nf_nat_pptp nat_pptp_info;
#endif
};
struct nf_conn;
/* The structure embedded in the conntrack structure. */
struct nf_conn_nat {
union nf_conntrack_nat_help help;
#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV4) || \
IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV6)
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);
/* Is this tuple already taken? (not by us)*/
int nf_nat_used_tuple(const struct nf_conntrack_tuple *tuple,
const struct nf_conn *ignored_conntrack);
static inline struct nf_conn_nat *nfct_nat(const struct nf_conn *ct)
{
#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE)
return nf_ct_ext_find(ct, NF_CT_EXT_NAT);
#else
return NULL;
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yasuyuki Kozakai | 23 | 56.10% | 1 | 50.00% |
| Changli Gao | 18 | 43.90% | 1 | 50.00% |
| Total | 41 | 100.00% | 2 | 100.00% |
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_IPV4) || \
IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV6)
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
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jozsef Kadlecsik | 67 | 94.37% | 1 | 33.33% |
| Pablo Neira Ayuso | 2 | 2.82% | 1 | 33.33% |
| Florian Westphal | 2 | 2.82% | 1 | 33.33% |
| Total | 71 | 100.00% | 3 | 100.00% |
int nf_nat_register_fn(struct net *net, 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, const struct nf_hook_ops *ops,
unsigned int ops_count);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jozsef Kadlecsik | 134 | 42.27% | 2 | 10.00% |
| Yasuyuki Kozakai | 57 | 17.98% | 4 | 20.00% |
| Florian Westphal | 57 | 17.98% | 3 | 15.00% |
| Changli Gao | 31 | 9.78% | 2 | 10.00% |
| Pablo Neira Ayuso | 23 | 7.26% | 3 | 15.00% |
| Patrick McHardy | 13 | 4.10% | 4 | 20.00% |
| Thierry Du Tre | 1 | 0.32% | 1 | 5.00% |
| Greg Kroah-Hartman | 1 | 0.32% | 1 | 5.00% |
| Total | 317 | 100.00% | 20 | 100.00% |
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