[apple/xnu.git] / bsd / netinet6 / ip6_fw.h

/*
 * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1993 Daniel Boulet
 * Copyright (c) 1994 Ugen J.S.Antsilevich
 *
 * Redistribution and use in source forms, with and without modification,
 * are permitted provided that this entire comment appears intact.
 *
 * Redistribution in binary form may occur without any restrictions.
 * Obviously, it would be nice if you gave credit where credit is due
 * but requiring it would be too onerous.
 *
 * This software is provided ``AS IS'' without any warranties of any kind.
 *
 */

#ifndef _IP6_FW_H
#define _IP6_FW_H

/*
 * Define IPv6 Firewall event subclass, and associated events.
 */

/*!
	@defined KEV_IP6FW_SUBCLASS
	@discussion The kernel event subclass for IPv6 Firewall.
*/
#define KEV_IP6FW_SUBCLASS	2

/*!
	@defined KEV_IP6FW_ADD
	@discussion The event code indicating a rule has been added.
*/
#define KEV_IP6FW_ADD		1

/*!
	@defined KEV_IP6FW_DEL
	@discussion The event code indicating a rule has been removed.
*/
#define KEV_IP6FW_DEL		2

/*!
	@defined KEV_IP6FW_FLUSH
	@discussion The event code indicating the rule set has been flushed.
*/
#define KEV_IP6FW_FLUSH		3

/*!
	@defined KEV_IP6FW_FLUSH
	@discussion The event code indicating the enable flag has been changed 
*/
#define KEV_IP6FW_ENABLE	4


#if !__LP64__

#include <sys/appleapiopts.h>

#include <net/if.h>

#define IPV6_FW_CURRENT_API_VERSION 20	/* Version of this API */


/*
 * This union structure identifies an interface, either explicitly
 * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
 * and IP_FW_F_OIFNAME say how to interpret this structure. An
 * interface unit number of -1 matches any unit number, while an
 * IP address of 0.0.0.0 indicates matches any interface.
 *
 * The receive and transmit interfaces are only compared against the
 * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
 * is set. Note some packets lack a receive or transmit interface
 * (in which case the missing "interface" never matches).
 */

union ip6_fw_if {
    struct in6_addr fu_via_ip6;	/* Specified by IPv6 address */
    struct {			/* Specified by interface name */
#define IP6FW_IFNLEN     IFNAMSIZ
	    char  name[IP6FW_IFNLEN];
	    short unit;		/* -1 means match any unit */
    } fu_via_if;
};

/*
 * Format of an IP firewall descriptor
 *
 * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
 * fw_flg and fw_n*p are stored in host byte order (of course).
 * Port numbers are stored in HOST byte order.
 * Warning: setsockopt() will fail if sizeof(struct ip_fw) > MLEN (108)
 */

struct ip6_fw {
	u_int32_t version;		/* Version of this structure.  Should always be */
							/* set to IP6_FW_CURRENT_API_VERSION by clients. */
	void *context;			/* Context that is usable by user processes to */
							/* identify this rule. */
    u_long fw_pcnt,fw_bcnt;		/* Packet and byte counters */
    struct in6_addr fw_src, fw_dst;	/* Source and destination IPv6 addr */
    struct in6_addr fw_smsk, fw_dmsk;	/* Mask for src and dest IPv6 addr */
    u_short fw_number;			/* Rule number */
    u_short fw_flg;			/* Flags word */
#define IPV6_FW_MAX_PORTS	10	/* A reasonable maximum */
    u_int fw_ipflg;			/* IP flags word */
    u_short fw_pts[IPV6_FW_MAX_PORTS];	/* Array of port numbers to match */
    u_char fw_ip6opt,fw_ip6nopt;	/* IPv6 options set/unset */
    u_char fw_tcpf,fw_tcpnf;		/* TCP flags set/unset */
#define IPV6_FW_ICMPTYPES_DIM (256 / (sizeof(unsigned) * 8))
    unsigned fw_icmp6types[IPV6_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */
    long timestamp;			/* timestamp (tv_sec) of last match */
    union ip6_fw_if fw_in_if, fw_out_if;/* Incoming and outgoing interfaces */
    union {
	u_short fu_divert_port;		/* Divert/tee port (options IP6DIVERT) */
	u_short fu_skipto_rule;		/* SKIPTO command rule number */
	u_short fu_reject_code;		/* REJECT response code */
    } fw_un;
    u_char fw_prot;			/* IPv6 protocol */
    u_char fw_nports;			/* N'of src ports and # of dst ports */
					/* in ports array (dst ports follow */
					/* src ports; max of 10 ports in all; */
					/* count of 0 means match all ports) */
};

#define IPV6_FW_GETNSRCP(rule)		((rule)->fw_nports & 0x0f)
#define IPV6_FW_SETNSRCP(rule, n)		do {				\
					  (rule)->fw_nports &= ~0x0f;	\
					  (rule)->fw_nports |= (n);	\
					} while (0)
#define IPV6_FW_GETNDSTP(rule)		((rule)->fw_nports >> 4)
#define IPV6_FW_SETNDSTP(rule, n)		do {				\
					  (rule)->fw_nports &= ~0xf0;	\
					  (rule)->fw_nports |= (n) << 4;\
					} while (0)

#define fw_divert_port	fw_un.fu_divert_port
#define fw_skipto_rule	fw_un.fu_skipto_rule
#define fw_reject_code	fw_un.fu_reject_code

struct ip6_fw_chain {
        LIST_ENTRY(ip6_fw_chain) chain;
        struct ip6_fw    *rule;
};

/*
 * Values for "flags" field .
 */
#define IPV6_FW_F_IN	0x0001	/* Check inbound packets		*/
#define IPV6_FW_F_OUT	0x0002	/* Check outbound packets		*/
#define IPV6_FW_F_IIFACE	0x0004	/* Apply inbound interface test		*/
#define IPV6_FW_F_OIFACE	0x0008	/* Apply outbound interface test	*/

#define IPV6_FW_F_COMMAND 0x0070	/* Mask for type of chain entry:	*/
#define IPV6_FW_F_DENY	0x0000	/* This is a deny rule			*/
#define IPV6_FW_F_REJECT	0x0010	/* Deny and send a response packet	*/
#define IPV6_FW_F_ACCEPT	0x0020	/* This is an accept rule		*/
#define IPV6_FW_F_COUNT	0x0030	/* This is a count rule			*/
#define IPV6_FW_F_DIVERT	0x0040	/* This is a divert rule		*/
#define IPV6_FW_F_TEE	0x0050	/* This is a tee rule			*/
#define IPV6_FW_F_SKIPTO	0x0060	/* This is a skipto rule		*/

#define IPV6_FW_F_PRN	0x0080	/* Print if this rule matches		*/

#define IPV6_FW_F_SRNG	0x0100	/* The first two src ports are a min	*
				 * and max range (stored in host byte	*
				 * order).				*/

#define IPV6_FW_F_DRNG	0x0200	/* The first two dst ports are a min	*
				 * and max range (stored in host byte	*
				 * order).				*/

#define IPV6_FW_F_IIFNAME	0x0400	/* In interface by name/unit (not IP)	*/
#define IPV6_FW_F_OIFNAME	0x0800	/* Out interface by name/unit (not IP)	*/

#define IPV6_FW_F_INVSRC	0x1000	/* Invert sense of src check		*/
#define IPV6_FW_F_INVDST	0x2000	/* Invert sense of dst check		*/

#define IPV6_FW_F_FRAG	0x4000	/* Fragment				*/

#define IPV6_FW_F_ICMPBIT 0x8000	/* ICMP type bitmap is valid		*/

#define IPV6_FW_F_MASK	0xFFFF	/* All possible flag bits mask		*/

/* 
 * Flags for the 'fw_ipflg' field, for comparing values of ip and its protocols. */
#define	IPV6_FW_IF_TCPEST 0x00000020	/* established TCP connection	*/
#define IPV6_FW_IF_TCPMSK 0x00000020	/* mask of all TCP values */

/*
 * For backwards compatibility with rules specifying "via iface" but
 * not restricted to only "in" or "out" packets, we define this combination
 * of bits to represent this configuration.
 */

#define IF6_FW_F_VIAHACK	(IPV6_FW_F_IN|IPV6_FW_F_OUT|IPV6_FW_F_IIFACE|IPV6_FW_F_OIFACE)

/*
 * Definitions for REJECT response codes.
 * Values less than 256 correspond to ICMP unreachable codes.
 */
#define IPV6_FW_REJECT_RST	0x0100		/* TCP packets: send RST */

/*
 * Definitions for IPv6 option names.
 */
#define IPV6_FW_IP6OPT_HOPOPT	0x01
#define IPV6_FW_IP6OPT_ROUTE	0x02
#define IPV6_FW_IP6OPT_FRAG	0x04
#define IPV6_FW_IP6OPT_ESP	0x08
#define IPV6_FW_IP6OPT_AH	0x10
#define IPV6_FW_IP6OPT_NONXT	0x20
#define IPV6_FW_IP6OPT_OPTS	0x40

/*
 * Definitions for TCP flags.
 */
#define IPV6_FW_TCPF_FIN	TH_FIN
#define IPV6_FW_TCPF_SYN	TH_SYN
#define IPV6_FW_TCPF_RST	TH_RST
#define IPV6_FW_TCPF_PSH	TH_PUSH
#define IPV6_FW_TCPF_ACK	TH_ACK
#define IPV6_FW_TCPF_URG	TH_URG

/*
 * Main firewall chains definitions and global var's definitions.
 */
#ifdef KERNEL_PRIVATE

#define M_IP6FW M_IPFW


/*
 * Function definitions.
 */
void ip6_fw_init(void);

/* Firewall hooks */
struct ip6_hdr;
struct sockopt;
typedef	int ip6_fw_chk_t(struct ip6_hdr**, struct ifnet*,
				u_short *, struct mbuf**);
typedef	int ip6_fw_ctl_t(struct sockopt *);
extern	ip6_fw_chk_t *ip6_fw_chk_ptr;
extern	ip6_fw_ctl_t *ip6_fw_ctl_ptr;
extern	int ip6_fw_enable;

#endif /* KERNEL_PRIVATE */

#endif /* !__LP64__ */
#endif /* _IP6_FW_H */
Commit	Line	Data
9bccf70c A	1	/*
	2	* Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
9bccf70c	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
9bccf70c	27	*/
1c79356b A	28	/*
	29	* Copyright (c) 1993 Daniel Boulet
	30	* Copyright (c) 1994 Ugen J.S.Antsilevich
	31	*
	32	* Redistribution and use in source forms, with and without modification,
	33	* are permitted provided that this entire comment appears intact.
	34	*
	35	* Redistribution in binary form may occur without any restrictions.
	36	* Obviously, it would be nice if you gave credit where credit is due
	37	* but requiring it would be too onerous.
	38	*
	39	* This software is provided ``AS IS'' without any warranties of any kind.
	40	*
	41	*/
	42
	43	#ifndef _IP6_FW_H
	44	#define _IP6_FW_H
2d21ac55 A	45
	46	/*
	47	* Define IPv6 Firewall event subclass, and associated events.
	48	*/
	49
	50	/*!
	51	@defined KEV_IP6FW_SUBCLASS
	52	@discussion The kernel event subclass for IPv6 Firewall.
	53	*/
	54	#define KEV_IP6FW_SUBCLASS 2
	55
	56	/*!
	57	@defined KEV_IP6FW_ADD
	58	@discussion The event code indicating a rule has been added.
	59	*/
	60	#define KEV_IP6FW_ADD 1
	61
	62	/*!
	63	@defined KEV_IP6FW_DEL
	64	@discussion The event code indicating a rule has been removed.
	65	*/
	66	#define KEV_IP6FW_DEL 2
	67
	68	/*!
	69	@defined KEV_IP6FW_FLUSH
	70	@discussion The event code indicating the rule set has been flushed.
	71	*/
	72	#define KEV_IP6FW_FLUSH 3
	73
	74	/*!
	75	@defined KEV_IP6FW_FLUSH
	76	@discussion The event code indicating the enable flag has been changed
	77	*/
	78	#define KEV_IP6FW_ENABLE 4
	79
	80
	81
	82	#if !__LP64__
	83
9bccf70c	84	#include <sys/appleapiopts.h>
1c79356b A	85
1c79356b A	86	#include <net/if.h>
9bccf70c	87
55e303ae	88	#define IPV6_FW_CURRENT_API_VERSION 20 /* Version of this API */
9bccf70c	89
1c79356b A	90
	91	/*
	92	* This union structure identifies an interface, either explicitly
	93	* by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
	94	* and IP_FW_F_OIFNAME say how to interpret this structure. An
	95	* interface unit number of -1 matches any unit number, while an
	96	* IP address of 0.0.0.0 indicates matches any interface.
	97	*
	98	* The receive and transmit interfaces are only compared against the
	99	* the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
	100	* is set. Note some packets lack a receive or transmit interface
	101	* (in which case the missing "interface" never matches).
	102	*/
	103
	104	union ip6_fw_if {
	105	struct in6_addr fu_via_ip6; /* Specified by IPv6 address */
	106	struct { /* Specified by interface name */
9bccf70c A	107	#define IP6FW_IFNLEN IFNAMSIZ
9bccf70c A	108	char name[IP6FW_IFNLEN];
1c79356b A	109	short unit; /* -1 means match any unit */
	110	} fu_via_if;
	111	};
	112
	113	/*
	114	* Format of an IP firewall descriptor
	115	*
	116	* fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
	117	* fw_flg and fw_n*p are stored in host byte order (of course).
	118	* Port numbers are stored in HOST byte order.
	119	* Warning: setsockopt() will fail if sizeof(struct ip_fw) > MLEN (108)
	120	*/
	121
	122	struct ip6_fw {
9bccf70c A	123	u_int32_t version; /* Version of this structure. Should always be */
	124	/* set to IP6_FW_CURRENT_API_VERSION by clients. */
	125	void context; / Context that is usable by user processes to */
	126	/* identify this rule. */
1c79356b A	127	u_long fw_pcnt,fw_bcnt; /* Packet and byte counters */
	128	struct in6_addr fw_src, fw_dst; /* Source and destination IPv6 addr */
	129	struct in6_addr fw_smsk, fw_dmsk; /* Mask for src and dest IPv6 addr */
	130	u_short fw_number; /* Rule number */
	131	u_short fw_flg; /* Flags word */
	132	#define IPV6_FW_MAX_PORTS 10 /* A reasonable maximum */
9bccf70c	133	u_int fw_ipflg; /* IP flags word */
1c79356b A	134	u_short fw_pts[IPV6_FW_MAX_PORTS]; /* Array of port numbers to match */
	135	u_char fw_ip6opt,fw_ip6nopt; /* IPv6 options set/unset */
	136	u_char fw_tcpf,fw_tcpnf; /* TCP flags set/unset */
9bccf70c	137	#define IPV6_FW_ICMPTYPES_DIM (256 / (sizeof(unsigned) * 8))
1c79356b A	138	unsigned fw_icmp6types[IPV6_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */
	139	long timestamp; /* timestamp (tv_sec) of last match */
	140	union ip6_fw_if fw_in_if, fw_out_if;/* Incoming and outgoing interfaces */
	141	union {
	142	u_short fu_divert_port; /* Divert/tee port (options IP6DIVERT) */
	143	u_short fu_skipto_rule; /* SKIPTO command rule number */
	144	u_short fu_reject_code; /* REJECT response code */
	145	} fw_un;
	146	u_char fw_prot; /* IPv6 protocol */
	147	u_char fw_nports; /* N'of src ports and # of dst ports */
	148	/* in ports array (dst ports follow */
	149	/* src ports; max of 10 ports in all; */
	150	/* count of 0 means match all ports) */
	151	};
	152
	153	#define IPV6_FW_GETNSRCP(rule) ((rule)->fw_nports & 0x0f)
	154	#define IPV6_FW_SETNSRCP(rule, n) do { \
	155	(rule)->fw_nports &= ~0x0f; \
	156	(rule)->fw_nports \|= (n); \
	157	} while (0)
	158	#define IPV6_FW_GETNDSTP(rule) ((rule)->fw_nports >> 4)
	159	#define IPV6_FW_SETNDSTP(rule, n) do { \
	160	(rule)->fw_nports &= ~0xf0; \
	161	(rule)->fw_nports \|= (n) << 4;\
	162	} while (0)
	163
	164	#define fw_divert_port fw_un.fu_divert_port
	165	#define fw_skipto_rule fw_un.fu_skipto_rule
	166	#define fw_reject_code fw_un.fu_reject_code
	167
	168	struct ip6_fw_chain {
	169	LIST_ENTRY(ip6_fw_chain) chain;
	170	struct ip6_fw *rule;
	171	};
	172
	173	/*
	174	* Values for "flags" field .
	175	*/
	176	#define IPV6_FW_F_IN 0x0001 /* Check inbound packets */
	177	#define IPV6_FW_F_OUT 0x0002 /* Check outbound packets */
	178	#define IPV6_FW_F_IIFACE 0x0004 /* Apply inbound interface test */
	179	#define IPV6_FW_F_OIFACE 0x0008 /* Apply outbound interface test */
	180
	181	#define IPV6_FW_F_COMMAND 0x0070 /* Mask for type of chain entry: */
	182	#define IPV6_FW_F_DENY 0x0000 /* This is a deny rule */
	183	#define IPV6_FW_F_REJECT 0x0010 /* Deny and send a response packet */
	184	#define IPV6_FW_F_ACCEPT 0x0020 /* This is an accept rule */
	185	#define IPV6_FW_F_COUNT 0x0030 /* This is a count rule */
	186	#define IPV6_FW_F_DIVERT 0x0040 /* This is a divert rule */
	187	#define IPV6_FW_F_TEE 0x0050 /* This is a tee rule */
	188	#define IPV6_FW_F_SKIPTO 0x0060 /* This is a skipto rule */
	189
	190	#define IPV6_FW_F_PRN 0x0080 /* Print if this rule matches */
	191
	192	#define IPV6_FW_F_SRNG 0x0100 /* The first two src ports are a min *
	193	* and max range (stored in host byte *
	194	* order). */
	195
	196	#define IPV6_FW_F_DRNG 0x0200 /* The first two dst ports are a min *
	197	* and max range (stored in host byte *
	198	* order). */
	199
	200	#define IPV6_FW_F_IIFNAME 0x0400 /* In interface by name/unit (not IP) */
	201	#define IPV6_FW_F_OIFNAME 0x0800 /* Out interface by name/unit (not IP) */
202
203	#define IPV6_FW_F_INVSRC 0x1000 /* Invert sense of src check */
204	#define IPV6_FW_F_INVDST 0x2000 /* Invert sense of dst check */
205
206	#define IPV6_FW_F_FRAG 0x4000 /* Fragment */
207
208	#define IPV6_FW_F_ICMPBIT 0x8000 /* ICMP type bitmap is valid */
209
210	#define IPV6_FW_F_MASK 0xFFFF /* All possible flag bits mask */
211
9bccf70c A	212	/*
	213	* Flags for the 'fw_ipflg' field, for comparing values of ip and its protocols. */
	214	#define IPV6_FW_IF_TCPEST 0x00000020 /* established TCP connection */
	215	#define IPV6_FW_IF_TCPMSK 0x00000020 /* mask of all TCP values */
	216
1c79356b A	217	/*
	218	* For backwards compatibility with rules specifying "via iface" but
	219	* not restricted to only "in" or "out" packets, we define this combination
	220	* of bits to represent this configuration.
	221	*/
	222
	223	#define IF6_FW_F_VIAHACK (IPV6_FW_F_IN\|IPV6_FW_F_OUT\|IPV6_FW_F_IIFACE\|IPV6_FW_F_OIFACE)
	224
	225	/*
	226	* Definitions for REJECT response codes.
	227	* Values less than 256 correspond to ICMP unreachable codes.
	228	*/
	229	#define IPV6_FW_REJECT_RST 0x0100 /* TCP packets: send RST */
	230
	231	/*
	232	* Definitions for IPv6 option names.
	233	*/
	234	#define IPV6_FW_IP6OPT_HOPOPT 0x01
	235	#define IPV6_FW_IP6OPT_ROUTE 0x02
	236	#define IPV6_FW_IP6OPT_FRAG 0x04
	237	#define IPV6_FW_IP6OPT_ESP 0x08
	238	#define IPV6_FW_IP6OPT_AH 0x10
	239	#define IPV6_FW_IP6OPT_NONXT 0x20
	240	#define IPV6_FW_IP6OPT_OPTS 0x40
	241
	242	/*
	243	* Definitions for TCP flags.
	244	*/
	245	#define IPV6_FW_TCPF_FIN TH_FIN
	246	#define IPV6_FW_TCPF_SYN TH_SYN
	247	#define IPV6_FW_TCPF_RST TH_RST
	248	#define IPV6_FW_TCPF_PSH TH_PUSH
	249	#define IPV6_FW_TCPF_ACK TH_ACK
	250	#define IPV6_FW_TCPF_URG TH_URG
1c79356b A	251
	252	/*
	253	* Main firewall chains definitions and global var's definitions.
	254	*/
91447636	255	#ifdef KERNEL_PRIVATE
9bccf70c A	256
	257	#define M_IP6FW M_IPFW
	258
1c79356b A	259
	260	/*
	261	* Function definitions.
	262	*/
	263	void ip6_fw_init(void);
	264
	265	/* Firewall hooks */
	266	struct ip6_hdr;
55e303ae	267	struct sockopt;
91447636 A	268	typedef int ip6_fw_chk_t(struct ip6_hdr*, struct ifnet,
	269	u_short , struct mbuf*);
	270	typedef int ip6_fw_ctl_t(struct sockopt *);
1c79356b A	271	extern ip6_fw_chk_t *ip6_fw_chk_ptr;
1c79356b A	272	extern ip6_fw_ctl_t *ip6_fw_ctl_ptr;
9bccf70c	273	extern int ip6_fw_enable;
1c79356b	274
91447636	275	#endif /* KERNEL_PRIVATE */
1c79356b	276
2d21ac55	277	#endif /* !__LP64__ */
1c79356b	278	#endif /* _IP6_FW_H */