[people/arne_f/kernel.git] / include / net / netfilter / nf_nat_l3proto.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_NAT_L3PROTO_H
#define _NF_NAT_L3PROTO_H

struct nf_nat_l4proto;
struct nf_nat_l3proto {
	u8	l3proto;

	bool	(*in_range)(const struct nf_conntrack_tuple *t,
			    const struct nf_nat_range *range);

	u32 	(*secure_port)(const struct nf_conntrack_tuple *t, __be16);

	bool	(*manip_pkt)(struct sk_buff *skb,
			     unsigned int iphdroff,
			     const struct nf_nat_l4proto *l4proto,
			     const struct nf_conntrack_tuple *target,
			     enum nf_nat_manip_type maniptype);

	void	(*csum_update)(struct sk_buff *skb, unsigned int iphdroff,
			       __sum16 *check,
			       const struct nf_conntrack_tuple *t,
			       enum nf_nat_manip_type maniptype);

	void	(*csum_recalc)(struct sk_buff *skb, u8 proto,
			       void *data, __sum16 *check,
			       int datalen, int oldlen);

	void	(*decode_session)(struct sk_buff *skb,
				  const struct nf_conn *ct,
				  enum ip_conntrack_dir dir,
				  unsigned long statusbit,
				  struct flowi *fl);

	int	(*nlattr_to_range)(struct nlattr *tb[],
				   struct nf_nat_range *range);
};

int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);

int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
				  enum ip_conntrack_info ctinfo,
				  unsigned int hooknum);

unsigned int nf_nat_ipv4_in(void *priv, struct sk_buff *skb,
			    const struct nf_hook_state *state,
			    unsigned int (*do_chain)(void *priv,
						     struct sk_buff *skb,
						     const struct nf_hook_state *state,
						     struct nf_conn *ct));

unsigned int nf_nat_ipv4_out(void *priv, struct sk_buff *skb,
			     const struct nf_hook_state *state,
			     unsigned int (*do_chain)(void *priv,
						      struct sk_buff *skb,
						      const struct nf_hook_state *state,
						      struct nf_conn *ct));

unsigned int nf_nat_ipv4_local_fn(void *priv,
				  struct sk_buff *skb,
				  const struct nf_hook_state *state,
				  unsigned int (*do_chain)(void *priv,
							   struct sk_buff *skb,
							   const struct nf_hook_state *state,
							   struct nf_conn *ct));

unsigned int nf_nat_ipv4_fn(void *priv, struct sk_buff *skb,
			    const struct nf_hook_state *state,
			    unsigned int (*do_chain)(void *priv,
						     struct sk_buff *skb,
						     const struct nf_hook_state *state,
						     struct nf_conn *ct));

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);

unsigned int nf_nat_ipv6_in(void *priv, struct sk_buff *skb,
			    const struct nf_hook_state *state,
			    unsigned int (*do_chain)(void *priv,
						     struct sk_buff *skb,
						     const struct nf_hook_state *state,
						     struct nf_conn *ct));

unsigned int nf_nat_ipv6_out(void *priv, struct sk_buff *skb,
			     const struct nf_hook_state *state,
			     unsigned int (*do_chain)(void *priv,
						      struct sk_buff *skb,
						      const struct nf_hook_state *state,
						      struct nf_conn *ct));

unsigned int nf_nat_ipv6_local_fn(void *priv,
				  struct sk_buff *skb,
				  const struct nf_hook_state *state,
				  unsigned int (*do_chain)(void *priv,
							   struct sk_buff *skb,
							   const struct nf_hook_state *state,
							   struct nf_conn *ct));

unsigned int nf_nat_ipv6_fn(void *priv, struct sk_buff *skb,
			    const struct nf_hook_state *state,
			    unsigned int (*do_chain)(void *priv,
						     struct sk_buff *skb,
						     const struct nf_hook_state *state,
						     struct nf_conn *ct));

#endif /* _NF_NAT_L3PROTO_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
c7232c99 PM	2	#ifndef _NF_NAT_L3PROTO_H
	3	#define _NF_NAT_L3PROTO_H
	4
	5	struct nf_nat_l4proto;
	6	struct nf_nat_l3proto {
	7	u8 l3proto;
	8
	9	bool (in_range)(const struct nf_conntrack_tuple t,
	10	const struct nf_nat_range *range);
	11
	12	u32 (secure_port)(const struct nf_conntrack_tuple t, __be16);
	13
	14	bool (manip_pkt)(struct sk_buff skb,
	15	unsigned int iphdroff,
	16	const struct nf_nat_l4proto *l4proto,
	17	const struct nf_conntrack_tuple *target,
	18	enum nf_nat_manip_type maniptype);
	19
	20	void (csum_update)(struct sk_buff skb, unsigned int iphdroff,
	21	__sum16 *check,
	22	const struct nf_conntrack_tuple *t,
	23	enum nf_nat_manip_type maniptype);
	24
	25	void (csum_recalc)(struct sk_buff skb, u8 proto,
	26	void data, __sum16 check,
	27	int datalen, int oldlen);
	28
	29	void (decode_session)(struct sk_buff skb,
	30	const struct nf_conn *ct,
	31	enum ip_conntrack_dir dir,
	32	unsigned long statusbit,
	33	struct flowi *fl);
	34
	35	int (nlattr_to_range)(struct nlattr tb[],
	36	struct nf_nat_range *range);
	37	};
	38
4e77be46 JP	39	int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
	40	void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
	41	const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);
	42
	43	int nf_nat_icmp_reply_translation(struct sk_buff skb, struct nf_conn ct,
	44	enum ip_conntrack_info ctinfo,
	45	unsigned int hooknum);
30766f4c	46
06198b34	47	unsigned int nf_nat_ipv4_in(void priv, struct sk_buff skb,
d7cf4081	48	const struct nf_hook_state *state,
06198b34	49	unsigned int (do_chain)(void priv,
30766f4c	50	struct sk_buff *skb,
d7cf4081	51	const struct nf_hook_state *state,
30766f4c PNA	52	struct nf_conn *ct));
30766f4c PNA	53
06198b34	54	unsigned int nf_nat_ipv4_out(void priv, struct sk_buff skb,
d7cf4081	55	const struct nf_hook_state *state,
06198b34	56	unsigned int (do_chain)(void priv,
30766f4c	57	struct sk_buff *skb,
d7cf4081	58	const struct nf_hook_state *state,
30766f4c PNA	59	struct nf_conn *ct));
30766f4c PNA	60
06198b34	61	unsigned int nf_nat_ipv4_local_fn(void *priv,
30766f4c	62	struct sk_buff *skb,
d7cf4081	63	const struct nf_hook_state *state,
06198b34	64	unsigned int (do_chain)(void priv,
30766f4c	65	struct sk_buff *skb,
d7cf4081	66	const struct nf_hook_state *state,
30766f4c PNA	67	struct nf_conn *ct));
30766f4c PNA	68
06198b34	69	unsigned int nf_nat_ipv4_fn(void priv, struct sk_buff skb,
d7cf4081	70	const struct nf_hook_state *state,
06198b34	71	unsigned int (do_chain)(void priv,
30766f4c	72	struct sk_buff *skb,
d7cf4081	73	const struct nf_hook_state *state,
30766f4c PNA	74	struct nf_conn *ct));
30766f4c PNA	75
4e77be46 JP	76	int nf_nat_icmpv6_reply_translation(struct sk_buff skb, struct nf_conn ct,
	77	enum ip_conntrack_info ctinfo,
	78	unsigned int hooknum, unsigned int hdrlen);
c7232c99	79
06198b34	80	unsigned int nf_nat_ipv6_in(void priv, struct sk_buff skb,
8fe22382	81	const struct nf_hook_state *state,
06198b34	82	unsigned int (do_chain)(void priv,
2a5538e9	83	struct sk_buff *skb,
8fe22382	84	const struct nf_hook_state *state,
2a5538e9 PNA	85	struct nf_conn *ct));
2a5538e9 PNA	86
06198b34	87	unsigned int nf_nat_ipv6_out(void priv, struct sk_buff skb,
8fe22382	88	const struct nf_hook_state *state,
06198b34	89	unsigned int (do_chain)(void priv,
2a5538e9	90	struct sk_buff *skb,
8fe22382	91	const struct nf_hook_state *state,
2a5538e9 PNA	92	struct nf_conn *ct));
2a5538e9 PNA	93
06198b34	94	unsigned int nf_nat_ipv6_local_fn(void *priv,
2a5538e9	95	struct sk_buff *skb,
8fe22382	96	const struct nf_hook_state *state,
06198b34	97	unsigned int (do_chain)(void priv,
2a5538e9	98	struct sk_buff *skb,
8fe22382	99	const struct nf_hook_state *state,
2a5538e9 PNA	100	struct nf_conn *ct));
2a5538e9 PNA	101
06198b34	102	unsigned int nf_nat_ipv6_fn(void priv, struct sk_buff skb,
8fe22382	103	const struct nf_hook_state *state,
06198b34	104	unsigned int (do_chain)(void priv,
2a5538e9	105	struct sk_buff *skb,
8fe22382	106	const struct nf_hook_state *state,
2a5538e9 PNA	107	struct nf_conn *ct));
2a5538e9 PNA	108
c7232c99	109	#endif /* _NF_NAT_L3PROTO_H */