[mirror_ubuntu-jammy-kernel.git] / include / linux / netfilter_ipv6.h

#ifndef __LINUX_IP6_NETFILTER_H
#define __LINUX_IP6_NETFILTER_H

/* IPv6-specific defines for netfilter. 
 * (C)1998 Rusty Russell -- This code is GPL.
 * (C)1999 David Jeffery
 *   this header was blatantly ripped from netfilter_ipv4.h 
 *   it's amazing what adding a bunch of 6s can do =8^)
 */

#include <linux/netfilter.h>

/* only for userspace compatibility */
#ifndef __KERNEL__
/* IP Cache bits. */
/* Src IP address. */
#define NFC_IP6_SRC              0x0001
/* Dest IP address. */
#define NFC_IP6_DST              0x0002
/* Input device. */
#define NFC_IP6_IF_IN            0x0004
/* Output device. */
#define NFC_IP6_IF_OUT           0x0008
/* TOS. */
#define NFC_IP6_TOS              0x0010
/* Protocol. */
#define NFC_IP6_PROTO            0x0020
/* IP options. */
#define NFC_IP6_OPTIONS          0x0040
/* Frag & flags. */
#define NFC_IP6_FRAG             0x0080


/* Per-protocol information: only matters if proto match. */
/* TCP flags. */
#define NFC_IP6_TCPFLAGS         0x0100
/* Source port. */
#define NFC_IP6_SRC_PT           0x0200
/* Dest port. */
#define NFC_IP6_DST_PT           0x0400
/* Something else about the proto */
#define NFC_IP6_PROTO_UNKNOWN    0x2000
#endif /* ! __KERNEL__ */


/* IP6 Hooks */
/* After promisc drops, checksum checks. */
#define NF_IP6_PRE_ROUTING	0
/* If the packet is destined for this box. */
#define NF_IP6_LOCAL_IN		1
/* If the packet is destined for another interface. */
#define NF_IP6_FORWARD		2
/* Packets coming from a local process. */
#define NF_IP6_LOCAL_OUT		3
/* Packets about to hit the wire. */
#define NF_IP6_POST_ROUTING	4
#define NF_IP6_NUMHOOKS		5


enum nf_ip6_hook_priorities {
	NF_IP6_PRI_FIRST = INT_MIN,
	NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
	NF_IP6_PRI_SELINUX_FIRST = -225,
	NF_IP6_PRI_CONNTRACK = -200,
	NF_IP6_PRI_MANGLE = -150,
	NF_IP6_PRI_NAT_DST = -100,
	NF_IP6_PRI_FILTER = 0,
	NF_IP6_PRI_NAT_SRC = 100,
	NF_IP6_PRI_SELINUX_LAST = 225,
	NF_IP6_PRI_LAST = INT_MAX,
};

#ifdef CONFIG_NETFILTER
extern int ip6_route_me_harder(struct sk_buff *skb);
extern __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
				    unsigned int dataoff, u_int8_t protocol);

extern int ipv6_netfilter_init(void);
extern void ipv6_netfilter_fini(void);
#else /* CONFIG_NETFILTER */
static inline int ipv6_netfilter_init(void) { return 0; }
static inline void ipv6_netfilter_fini(void) { return; }
#endif /* CONFIG_NETFILTER */

#endif /*__LINUX_IP6_NETFILTER_H*/
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_IP6_NETFILTER_H
	2	#define __LINUX_IP6_NETFILTER_H
	3
	4	/* IPv6-specific defines for netfilter.
	5	* (C)1998 Rusty Russell -- This code is GPL.
	6	* (C)1999 David Jeffery
	7	* this header was blatantly ripped from netfilter_ipv4.h
	8	* it's amazing what adding a bunch of 6s can do =8^)
	9	*/
	10
	11	#include <linux/netfilter.h>
	12
6869c4d8 HW	13	/* only for userspace compatibility */
6869c4d8 HW	14	#ifndef __KERNEL__
1da177e4 LT	15	/* IP Cache bits. */
	16	/* Src IP address. */
	17	#define NFC_IP6_SRC 0x0001
	18	/* Dest IP address. */
	19	#define NFC_IP6_DST 0x0002
	20	/* Input device. */
	21	#define NFC_IP6_IF_IN 0x0004
	22	/* Output device. */
	23	#define NFC_IP6_IF_OUT 0x0008
	24	/* TOS. */
	25	#define NFC_IP6_TOS 0x0010
	26	/* Protocol. */
	27	#define NFC_IP6_PROTO 0x0020
	28	/* IP options. */
	29	#define NFC_IP6_OPTIONS 0x0040
	30	/* Frag & flags. */
	31	#define NFC_IP6_FRAG 0x0080
	32
	33
	34	/* Per-protocol information: only matters if proto match. */
	35	/* TCP flags. */
	36	#define NFC_IP6_TCPFLAGS 0x0100
	37	/* Source port. */
	38	#define NFC_IP6_SRC_PT 0x0200
	39	/* Dest port. */
	40	#define NFC_IP6_DST_PT 0x0400
	41	/* Something else about the proto */
	42	#define NFC_IP6_PROTO_UNKNOWN 0x2000
6869c4d8	43	#endif /* ! __KERNEL__ */
1da177e4 LT	44
	45
	46	/* IP6 Hooks */
	47	/* After promisc drops, checksum checks. */
	48	#define NF_IP6_PRE_ROUTING 0
	49	/* If the packet is destined for this box. */
	50	#define NF_IP6_LOCAL_IN 1
	51	/* If the packet is destined for another interface. */
	52	#define NF_IP6_FORWARD 2
	53	/* Packets coming from a local process. */
	54	#define NF_IP6_LOCAL_OUT 3
	55	/* Packets about to hit the wire. */
	56	#define NF_IP6_POST_ROUTING 4
	57	#define NF_IP6_NUMHOOKS 5
	58
	59
	60	enum nf_ip6_hook_priorities {
	61	NF_IP6_PRI_FIRST = INT_MIN,
9fb9cbb1	62	NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
1da177e4 LT	63	NF_IP6_PRI_SELINUX_FIRST = -225,
1da177e4 LT	64	NF_IP6_PRI_CONNTRACK = -200,
1da177e4 LT	65	NF_IP6_PRI_MANGLE = -150,
1da177e4 LT	66	NF_IP6_PRI_NAT_DST = -100,
1da177e4 LT	67	NF_IP6_PRI_FILTER = 0,
	68	NF_IP6_PRI_NAT_SRC = 100,
	69	NF_IP6_PRI_SELINUX_LAST = 225,
	70	NF_IP6_PRI_LAST = INT_MAX,
	71	};
	72
bb94aa16	73	#ifdef CONFIG_NETFILTER
9123de2c	74	extern int ip6_route_me_harder(struct sk_buff *skb);
b51655b9	75	extern __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
422c346f PM	76	unsigned int dataoff, u_int8_t protocol);
422c346f PM	77
20380731 ACM	78	extern int ipv6_netfilter_init(void);
20380731 ACM	79	extern void ipv6_netfilter_fini(void);
bb94aa16 PM	80	#else /* CONFIG_NETFILTER */
	81	static inline int ipv6_netfilter_init(void) { return 0; }
	82	static inline void ipv6_netfilter_fini(void) { return; }
	83	#endif /* CONFIG_NETFILTER */
2cc7d573	84
1da177e4	85	#endif /__LINUX_IP6_NETFILTER_H/