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NetBSD/sys/netinet/ip_fil.h
martti 7ff15b917f Upgraded IPFilter to 4.1.3
2004-07-23 05:39:03 +00:00

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/* $NetBSD: ip_fil.h,v 1.56 2004/07/23 05:39:04 martti Exp $ */
/*
* Copyright (C) 1993-2001, 2003 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* @(#)ip_fil.h 1.35 6/5/96
* Id: ip_fil.h,v 2.170.2.5 2004/06/08 13:14:17 darrenr Exp
*/
#ifndef _NETINET_IP_FIL_H_
#define _NETINET_IP_FIL_H_
#ifndef SOLARIS
# define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#endif
#ifndef __P
# ifdef __STDC__
# define __P(x) x
# else
# define __P(x) ()
# endif
#endif
#if defined(__STDC__) || defined(__GNUC__)
# define SIOCADAFR _IOW('r', 60, struct ipfobj)
# define SIOCRMAFR _IOW('r', 61, struct ipfobj)
# define SIOCSETFF _IOW('r', 62, u_int)
# define SIOCGETFF _IOR('r', 63, u_int)
# define SIOCGETFS _IOWR('r', 64, struct ipfobj)
# define SIOCIPFFL _IOWR('r', 65, int)
# define SIOCIPFFB _IOR('r', 66, int)
# define SIOCADIFR _IOW('r', 67, struct ipfobj)
# define SIOCRMIFR _IOW('r', 68, struct ipfobj)
# define SIOCSWAPA _IOR('r', 69, u_int)
# define SIOCINAFR _IOW('r', 70, struct ipfobj)
# define SIOCINIFR _IOW('r', 71, struct ipfobj)
# define SIOCFRENB _IOW('r', 72, u_int)
# define SIOCFRSYN _IOW('r', 73, u_int)
# define SIOCFRZST _IOWR('r', 74, struct ipfobj)
# define SIOCZRLST _IOWR('r', 75, struct ipfobj)
# define SIOCAUTHW _IOWR('r', 76, struct ipfobj)
# define SIOCAUTHR _IOWR('r', 77, struct ipfobj)
# define SIOCATHST _IOWR('r', 78, struct ipfobj)
# define SIOCSTLCK _IOWR('r', 79, u_int)
# define SIOCSTPUT _IOWR('r', 80, struct ipfobj)
# define SIOCSTGET _IOWR('r', 81, struct ipfobj)
# define SIOCSTGSZ _IOWR('r', 82, struct ipfobj)
# define SIOCGFRST _IOWR('r', 83, struct ipfobj)
# define SIOCSETLG _IOWR('r', 84, int)
# define SIOCGETLG _IOWR('r', 85, int)
# define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve)
# define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj)
# define SIOCIPFGET _IOWR('r', 88, struct ipfobj)
# define SIOCIPFSET _IOWR('r', 89, struct ipfobj)
# define SIOCIPFL6 _IOWR('r', 90, int)
#else
# define SIOCADAFR _IOW(r, 60, struct ipfobj)
# define SIOCRMAFR _IOW(r, 61, struct ipfobj)
# define SIOCSETFF _IOW(r, 62, u_int)
# define SIOCGETFF _IOR(r, 63, u_int)
# define SIOCGETFS _IOWR(r, 64, struct ipfobj)
# define SIOCIPFFL _IOWR(r, 65, int)
# define SIOCIPFFB _IOR(r, 66, int)
# define SIOCADIFR _IOW(r, 67, struct ipfobj)
# define SIOCRMIFR _IOW(r, 68, struct ipfobj)
# define SIOCSWAPA _IOR(r, 69, u_int)
# define SIOCINAFR _IOW(r, 70, struct ipfobj)
# define SIOCINIFR _IOW(r, 71, struct ipfobj)
# define SIOCFRENB _IOW(r, 72, u_int)
# define SIOCFRSYN _IOW(r, 73, u_int)
# define SIOCFRZST _IOWR(r, 74, struct ipfobj)
# define SIOCZRLST _IOWR(r, 75, struct ipfobj)
# define SIOCAUTHW _IOWR(r, 76, struct ipfobj)
# define SIOCAUTHR _IOWR(r, 77, struct ipfobj)
# define SIOCATHST _IOWR(r, 78, struct ipfobj)
# define SIOCSTLCK _IOWR(r, 79, u_int)
# define SIOCSTPUT _IOWR(r, 80, struct ipfobj)
# define SIOCSTGET _IOWR(r, 81, struct ipfobj)
# define SIOCSTGSZ _IOWR(r, 82, struct ipfobj)
# define SIOCGFRST _IOWR(r, 83, struct ipfobj)
# define SIOCSETLG _IOWR(r, 84, int)
# define SIOCGETLG _IOWR(r, 85, int)
# define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve)
# define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj)
# define SIOCIPFGET _IOWR(r, 88, struct ipfobj)
# define SIOCIPFSET _IOWR(r, 89, struct ipfobj)
# define SIOCIPFL6 _IOWR(r, 90, int)
#endif
#define SIOCADDFR SIOCADAFR
#define SIOCDELFR SIOCRMAFR
#define SIOCINSFR SIOCINAFR
struct ipscan;
struct ifnet;
typedef int (* lookupfunc_t) __P((void *, int, void *));
/*
* i6addr is used as a container for both IPv4 and IPv6 addresses, as well
* as other types of objects, depending on its qualifier.
*/
#ifdef USE_INET6
typedef union i6addr {
u_32_t i6[4];
struct in_addr in4;
struct in6_addr in6;
void *vptr[2];
lookupfunc_t lptr[2];
} i6addr_t;
#else
typedef union i6addr {
u_32_t i6[4];
struct in_addr in4;
void *vptr[2];
lookupfunc_t lptr[2];
} i6addr_t;
#endif
#define in4_addr in4.s_addr
#define iplookupnum i6[0]
#define iplookuptype i6[1]
/*
* NOTE: These DO overlap the above on 64bit systems and this IS recognised.
*/
#define iplookupptr vptr[0]
#define iplookupfunc lptr[1]
#define I60(x) (((i6addr_t *)(x))->i6[0])
#define I61(x) (((i6addr_t *)(x))->i6[1])
#define I62(x) (((i6addr_t *)(x))->i6[2])
#define I63(x) (((i6addr_t *)(x))->i6[3])
#define HI60(x) ntohl(((i6addr_t *)(x))->i6[0])
#define HI61(x) ntohl(((i6addr_t *)(x))->i6[1])
#define HI62(x) ntohl(((i6addr_t *)(x))->i6[2])
#define HI63(x) ntohl(((i6addr_t *)(x))->i6[3])
#define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
(I61(a) == I61(b)) && (I60(a) == I60(b)))
#define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
(I61(a) != I61(b)) || (I60(a) != I60(b)))
#define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
#define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
#define IP6_GT(a,b) (HI60(a) > HI60(b) || (HI60(a) == HI60(b) && \
(HI61(a) > HI61(b) || (HI61(a) == HI61(b) && \
(HI62(a) > HI62(b) || (HI62(a) == HI62(b) && \
HI63(a) > HI63(b)))))))
#define IP6_LT(a,b) (HI60(a) < HI60(b) || (HI60(a) == HI60(b) && \
(HI61(a) < HI61(b) || (HI61(a) == HI61(b) && \
(HI62(a) < HI62(b) || (HI62(a) == HI62(b) && \
HI63(a) < HI63(b)))))))
#define NLADD(n,x) htonl(ntohl(n) + (x))
#define IP6_INC(a) \
{ i6addr_t *_i6 = (i6addr_t *)(a); \
_i6->i6[0] = NLADD(_i6->i6[0], 1); \
if (_i6->i6[0] == 0) { \
_i6->i6[0] = NLADD(_i6->i6[1], 1); \
if (_i6->i6[1] == 0) { \
_i6->i6[0] = NLADD(_i6->i6[2], 1); \
if (_i6->i6[2] == 0) { \
_i6->i6[0] = NLADD(_i6->i6[3], 1); \
} \
} \
} \
}
#define IP6_ADD(a,x,d) \
{ i6addr_t *_s = (i6addr_t *)(a); \
i6addr_t *_d = (i6addr_t *)(d); \
_d->i6[0] = NLADD(_s->i6[0], x); \
if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \
_d->i6[1] = NLADD(_d->i6[1], 1); \
if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
_d->i6[2] = NLADD(_d->i6[2], 1); \
if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
_d->i6[3] = NLADD(_d->i6[3], 1); \
} \
} \
} \
}
#define IP6_AND(a,b,d) { i6addr_t *_s1 = (i6addr_t *)(a); \
i6addr_t *_s2 = (i6addr_t *)(d); \
i6addr_t *_d = (i6addr_t *)(d); \
_d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
_d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
_d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
_d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
}
#define IP6_MERGE(a,b,c) \
{ i6addr_t *_d, *_s1, *_s2; \
_d = (i6addr_t *)(a); \
_s1 = (i6addr_t *)(b); \
_s2 = (i6addr_t *)(c); \
_d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
_d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
_d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
_d->i6[2] |= _s1->i6[3] & ~_s2->i6[3]; \
}
typedef struct fr_ip {
u_32_t fi_v:4; /* IP version */
u_32_t fi_xx:4; /* spare */
u_32_t fi_tos:8; /* IP packet TOS */
u_32_t fi_ttl:8; /* IP packet TTL */
u_32_t fi_p:8; /* IP packet protocol */
u_32_t fi_optmsk; /* bitmask composed from IP options */
i6addr_t fi_src; /* source address from packet */
i6addr_t fi_dst; /* destination address from packet */
u_short fi_secmsk; /* bitmask composed from IP security options */
u_short fi_auth; /* authentication code from IP sec. options */
u_32_t fi_flx; /* packet flags */
u_32_t fi_tcpmsk; /* TCP options set/reset */
u_32_t fi_res1; /* RESERVED */
} fr_ip_t;
/*
* For use in fi_flx
*/
#define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/
#define FI_OPTIONS 0x0002
#define FI_FRAG 0x0004
#define FI_SHORT 0x0008
#define FI_NATED 0x0010
#define FI_MULTICAST 0x0020
#define FI_BROADCAST 0x0040
#define FI_MBCAST 0x0080
#define FI_STATE 0x0100
#define FI_BADNAT 0x0200
#define FI_BAD 0x0400
#define FI_OOW 0x0800 /* Out of state window, else match */
#define FI_ICMPERR 0x1000
#define FI_FRAGTAIL 0x2000
#define FI_BADSRC 0x4000
#define FI_LOWTTL 0x8000
#define FI_CMP 0xcff3 /* Not FI_FRAG,FI_FRAGTAIL */
#define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */
#define FI_WITH 0xeffe /* Not FI_TCPUDP */
#define FI_V6EXTHDR 0x10000
#define FI_COALESCE 0x20000
#define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */
#define FI_DONTCACHE 0x40000000 /* don't cache the result */
#define FI_IGNORE 0x80000000
#define fi_saddr fi_src.in4.s_addr
#define fi_daddr fi_dst.in4.s_addr
#define fi_srcnum fi_src.iplookupnum
#define fi_dstnum fi_dst.iplookupnum
#define fi_srctype fi_src.iplookuptype
#define fi_dsttype fi_dst.iplookuptype
#define fi_srcptr fi_src.iplookupptr
#define fi_dstptr fi_dst.iplookupptr
#define fi_srcfunc fi_src.iplookupfunc
#define fi_dstfunc fi_dst.iplookupfunc
/*
* These are both used by the state and NAT code to indicate that one port or
* the other should be treated as a wildcard.
* NOTE: When updating, check bit masks in ip_state.h and update there too.
*/
#define SI_W_SPORT 0x00000100
#define SI_W_DPORT 0x00000200
#define SI_WILDP (SI_W_SPORT|SI_W_DPORT)
#define SI_W_SADDR 0x00000400
#define SI_W_DADDR 0x00000800
#define SI_WILDA (SI_W_SADDR|SI_W_DADDR)
#define SI_NEWFR 0x00001000
#define SI_CLONE 0x00002000
#define SI_CLONED 0x00004000
typedef struct fr_info {
void *fin_ifp; /* interface packet is `on' */
fr_ip_t fin_fi; /* IP Packet summary */
union {
u_short fid_16[2]; /* TCP/UDP ports, ICMP code/type */
u_32_t fid_32;
} fin_dat;
int fin_out; /* in or out ? 1 == out, 0 == in */
int fin_rev; /* state only: 1 = reverse */
u_short fin_hlen; /* length of IP header in bytes */
u_char fin_tcpf; /* TCP header flags (SYN, ACK, etc) */
u_char fin_icode; /* ICMP error to return */
u_32_t fin_rule; /* rule # last matched */
char fin_group[FR_GROUPLEN]; /* group number, -1 for none */
struct frentry *fin_fr; /* last matching rule */
void *fin_dp; /* start of data past IP header */
int fin_dlen; /* length of data portion of packet */
int fin_plen;
int fin_ipoff; /* # bytes from buffer start to hdr */
u_short fin_id; /* IP packet id field */
u_short fin_off;
int fin_depth; /* Group nesting depth */
int fin_error; /* Error code to return */
void *fin_nat;
void *fin_state;
void *fin_nattag;
ip_t *fin_ip;
mb_t **fin_mp; /* pointer to pointer to mbuf */
mb_t *fin_m; /* pointer to mbuf */
#ifdef MENTAT
mb_t *fin_qfm; /* pointer to mblk where pkt starts */
void *fin_qpi;
#endif
} fr_info_t;
#define fin_v fin_fi.fi_v
#define fin_p fin_fi.fi_p
#define fin_flx fin_fi.fi_flx
#define fin_optmsk fin_fi.fi_optmsk
#define fin_secmsk fin_fi.fi_secmsk
#define fin_auth fin_fi.fi_auth
#define fin_src fin_fi.fi_src.in4
#define fin_src6 fin_fi.fi_src.in6
#define fin_saddr fin_fi.fi_saddr
#define fin_dst fin_fi.fi_dst.in4
#define fin_dst6 fin_fi.fi_dst.in6
#define fin_daddr fin_fi.fi_daddr
#define fin_data fin_dat.fid_16
#define fin_sport fin_dat.fid_16[0]
#define fin_dport fin_dat.fid_16[1]
#define fin_ports fin_dat.fid_32
#define IPF_IN 0
#define IPF_OUT 1
typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *));
typedef int (*ipfuncinit_t) __P((struct frentry *));
typedef struct ipfunc_resolve {
char ipfu_name[32];
ipfunc_t ipfu_addr;
ipfuncinit_t ipfu_init;
} ipfunc_resolve_t;
/*
* Size for compares on fr_info structures
*/
#define FI_CSIZE offsetof(fr_info_t, fin_icode)
#define FI_LCSIZE offsetof(fr_info_t, fin_dp)
/*
* Size for copying cache fr_info structure
*/
#define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
/*
* Structure for holding IPFilter's tag information
*/
#define IPFTAG_LEN 16
typedef struct {
union {
u_32_t iptu_num[4];
char iptu_tag[IPFTAG_LEN];
} ipt_un;
int ipt_not;
} ipftag_t;
#define ipt_tag ipt_un.iptu_tag
#define ipt_num ipt_un.iptu_num
/*
* This structure is used to hold information about the next hop for where
* to forward a packet.
*/
typedef struct frdest {
void *fd_ifp;
i6addr_t fd_ip6;
char fd_ifname[LIFNAMSIZ];
} frdest_t;
#define fd_ip fd_ip6.in4
/*
* This structure holds information about a port comparison.
*/
typedef struct frpcmp {
int frp_cmp; /* data for port comparisons */
u_short frp_port; /* top port for <> and >< */
u_short frp_top; /* top port for <> and >< */
} frpcmp_t;
#define FR_NONE 0
#define FR_EQUAL 1
#define FR_NEQUAL 2
#define FR_LESST 3
#define FR_GREATERT 4
#define FR_LESSTE 5
#define FR_GREATERTE 6
#define FR_OUTRANGE 7
#define FR_INRANGE 8
#define FR_INCRANGE 9
/*
* Structure containing all the relevant TCP things that can be checked in
* a filter rule.
*/
typedef struct frtuc {
u_char ftu_tcpfm; /* tcp flags mask */
u_char ftu_tcpf; /* tcp flags */
frpcmp_t ftu_src;
frpcmp_t ftu_dst;
} frtuc_t;
#define ftu_scmp ftu_src.frp_cmp
#define ftu_dcmp ftu_dst.frp_cmp
#define ftu_sport ftu_src.frp_port
#define ftu_dport ftu_dst.frp_port
#define ftu_stop ftu_src.frp_top
#define ftu_dtop ftu_dst.frp_top
#define FR_TCPFMAX 0x3f
/*
* This structure makes up what is considered to be the IPFilter specific
* matching components of a filter rule, as opposed to the data structures
* used to define the result which are in frentry_t and not here.
*/
typedef struct fripf {
fr_ip_t fri_ip;
fr_ip_t fri_mip; /* mask structure */
u_short fri_icmpm; /* data for ICMP packets (mask) */
u_short fri_icmp;
frtuc_t fri_tuc;
int fri_satype; /* addres type */
int fri_datype; /* addres type */
int fri_sifpidx; /* doing dynamic addressing */
int fri_difpidx; /* index into fr_ifps[] to use when */
} fripf_t;
#define fri_dstnum fri_ip.fi_dstnum
#define fri_srcnum fri_mip.fi_srcnum
#define fri_dstptr fri_ip.fi_dstptr
#define fri_srcptr fri_mip.fi_srcptr
#define FRI_NORMAL 0 /* Normal address */
#define FRI_DYNAMIC 1 /* dynamic address */
#define FRI_LOOKUP 2 /* address is a pool # */
#define FRI_RANGE 3 /* address/mask is a range */
#define FRI_NETWORK 4 /* network address from if */
#define FRI_BROADCAST 5 /* broadcast address from if */
#define FRI_PEERADDR 6 /* Peer address for P-to-P */
#define FRI_NETMASKED 7 /* network address with netmask from if */
typedef struct frentry * (* frentfunc_t) __P((fr_info_t *));
typedef struct frentry {
ipfmutex_t fr_lock;
struct frentry *fr_next;
struct frentry **fr_grp;
struct ipscan *fr_isc;
void *fr_ifas[4];
void *fr_ptr; /* for use with fr_arg */
char *fr_comment; /* text comment for rule */
int fr_ref; /* reference count - for grouping */
int fr_statecnt; /* state count - for limit rules */
/*
* These are only incremented when a packet matches this rule and
* it is the last match
*/
U_QUAD_T fr_hits;
U_QUAD_T fr_bytes;
/*
* For PPS rate limiting
*/
struct timeval fr_lastpkt;
int fr_curpps;
union {
void *fru_data;
caddr_t fru_caddr;
fripf_t *fru_ipf;
frentfunc_t fru_func;
} fr_dun;
/*
* Fields after this may not change whilst in the kernel.
*/
ipfunc_t fr_func; /* call this function */
int fr_dsize;
int fr_pps;
int fr_statemax; /* max reference count */
int fr_flineno; /* line number from conf file */
u_32_t fr_type;
u_32_t fr_flags; /* per-rule flags && options (see below) */
u_32_t fr_logtag; /* user defined log tag # */
u_32_t fr_collect; /* collection number */
u_int fr_arg; /* misc. numeric arg for rule */
u_int fr_loglevel; /* syslog log facility + priority */
u_int fr_age[2]; /* non-TCP timeouts */
u_char fr_v;
u_char fr_icode; /* return ICMP code */
char fr_group[FR_GROUPLEN]; /* group to which this rule belongs */
char fr_grhead[FR_GROUPLEN]; /* group # which this rule starts */
ipftag_t fr_nattag;
char fr_ifnames[4][LIFNAMSIZ];
char fr_isctag[16];
frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */
frdest_t fr_dif; /* duplicate packet interface */
/*
* This must be last and will change after loaded into the kernel.
*/
u_int fr_cksum; /* checksum on filter rules for performance */
} frentry_t;
#define fr_caddr fr_dun.fru_caddr
#define fr_data fr_dun.fru_data
#define fr_dfunc fr_dun.fru_func
#define fr_ipf fr_dun.fru_ipf
#define fr_ip fr_ipf->fri_ip
#define fr_mip fr_ipf->fri_mip
#define fr_icmpm fr_ipf->fri_icmpm
#define fr_icmp fr_ipf->fri_icmp
#define fr_tuc fr_ipf->fri_tuc
#define fr_satype fr_ipf->fri_satype
#define fr_datype fr_ipf->fri_datype
#define fr_sifpidx fr_ipf->fri_sifpidx
#define fr_difpidx fr_ipf->fri_difpidx
#define fr_proto fr_ip.fi_p
#define fr_mproto fr_mip.fi_p
#define fr_ttl fr_ip.fi_ttl
#define fr_mttl fr_mip.fi_ttl
#define fr_tos fr_ip.fi_tos
#define fr_mtos fr_mip.fi_tos
#define fr_tcpfm fr_tuc.ftu_tcpfm
#define fr_tcpf fr_tuc.ftu_tcpf
#define fr_scmp fr_tuc.ftu_scmp
#define fr_dcmp fr_tuc.ftu_dcmp
#define fr_dport fr_tuc.ftu_dport
#define fr_sport fr_tuc.ftu_sport
#define fr_stop fr_tuc.ftu_stop
#define fr_dtop fr_tuc.ftu_dtop
#define fr_dst fr_ip.fi_dst.in4
#define fr_daddr fr_ip.fi_dst.in4.s_addr
#define fr_src fr_ip.fi_src.in4
#define fr_saddr fr_ip.fi_src.in4.s_addr
#define fr_dmsk fr_mip.fi_dst.in4
#define fr_dmask fr_mip.fi_dst.in4.s_addr
#define fr_smsk fr_mip.fi_src.in4
#define fr_smask fr_mip.fi_src.in4.s_addr
#define fr_dstnum fr_ip.fi_dstnum
#define fr_srcnum fr_ip.fi_srcnum
#define fr_dsttype fr_ip.fi_dsttype
#define fr_srctype fr_ip.fi_srctype
#define fr_dstptr fr_mip.fi_dstptr
#define fr_srcptr fr_mip.fi_srcptr
#define fr_dstfunc fr_mip.fi_dstfunc
#define fr_srcfunc fr_mip.fi_srcfunc
#define fr_optbits fr_ip.fi_optmsk
#define fr_optmask fr_mip.fi_optmsk
#define fr_secbits fr_ip.fi_secmsk
#define fr_secmask fr_mip.fi_secmsk
#define fr_authbits fr_ip.fi_auth
#define fr_authmask fr_mip.fi_auth
#define fr_flx fr_ip.fi_flx
#define fr_mflx fr_mip.fi_flx
#define fr_ifname fr_ifnames[0]
#define fr_oifname fr_ifnames[2]
#define fr_ifa fr_ifas[0]
#define fr_oifa fr_ifas[2]
#define fr_tif fr_tifs[0]
#define fr_rif fr_tifs[1]
#define FR_NOLOGTAG 0
#ifndef offsetof
#define offsetof(t,m) (int)((&((t *)0L)->m))
#endif
#define FR_CMPSIZ (sizeof(struct frentry) - \
offsetof(struct frentry, fr_dsize))
/*
* fr_type
*/
#define FR_T_NONE 0
#define FR_T_IPF 1 /* IPF structures */
#define FR_T_BPFOPC 2 /* BPF opcode */
#define FR_T_CALLFUNC 3 /* callout to function in fr_func only */
#define FR_T_COMPIPF 4 /* compiled C code */
#define FR_T_BUILTIN 0x80000000 /* rule is in kernel space */
/*
* fr_flags
*/
#define FR_CALL 0x00000 /* call rule */
#define FR_BLOCK 0x00001 /* do not allow packet to pass */
#define FR_PASS 0x00002 /* allow packet to pass */
#define FR_AUTH 0x00003 /* use authentication */
#define FR_PREAUTH 0x00004 /* require preauthentication */
#define FR_ACCOUNT 0x00005 /* Accounting rule */
#define FR_SKIP 0x00006 /* skip rule */
#define FR_DIVERT 0x00007 /* divert rule */
#define FR_CMDMASK 0x0000f
#define FR_LOG 0x00010 /* Log */
#define FR_LOGB 0x00011 /* Log-fail */
#define FR_LOGP 0x00012 /* Log-pass */
#define FR_LOGMASK (FR_LOG|FR_CMDMASK)
#define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */
#define FR_NOTSRCIP 0x00040
#define FR_NOTDSTIP 0x00080
#define FR_QUICK 0x00100 /* match & stop processing list */
#define FR_KEEPFRAG 0x00200 /* keep fragment information */
#define FR_KEEPSTATE 0x00400 /* keep `connection' state information */
#define FR_FASTROUTE 0x00800 /* bypass normal routing */
#define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */
#define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */
#define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */
#define FR_OUTQUE 0x04000 /* outgoing packets */
#define FR_INQUE 0x08000 /* ingoing packets */
#define FR_LOGBODY 0x10000 /* Log the body */
#define FR_LOGFIRST 0x20000 /* Log the first byte if state held */
#define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
#define FR_DUP 0x80000 /* duplicate packet */
#define FR_FRSTRICT 0x100000 /* strict frag. cache */
#define FR_STSTRICT 0x200000 /* strict keep state */
#define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */
#define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */
#define FR_NOMATCH 0x8000000 /* no match occured */
/* 0x10000000 FF_LOGPASS */
/* 0x20000000 FF_LOGBLOCK */
/* 0x40000000 FF_LOGNOMATCH */
/* 0x80000000 FF_BLOCKNONIP */
#define FR_COPIED 0x40000000 /* copied from user space */
#define FR_INACTIVE 0x80000000 /* only used when flush'ing rules */
#define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
#define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK)
#define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS)
#define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH)
#define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH)
#define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT)
#define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP)
#define FR_ISNOMATCH(x) ((x) & FR_NOMATCH)
#define FR_INOUT (FR_INQUE|FR_OUTQUE)
/*
* recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
*/
#define FF_LOGPASS 0x10000000
#define FF_LOGBLOCK 0x20000000
#define FF_LOGNOMATCH 0x40000000
#define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
#define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
/*
* Structure that passes information on what/how to flush to the kernel.
*/
typedef struct ipfflush {
int ipflu_how;
int ipflu_arg;
} ipfflush_t;
/*
*
*/
typedef struct ipfgetctl {
u_int ipfg_min; /* min value */
u_int ipfg_current; /* current value */
u_int ipfg_max; /* max value */
u_int ipfg_default; /* default value */
u_int ipfg_steps; /* value increments */
char ipfg_name[40]; /* tag name for this control */
} ipfgetctl_t;
typedef struct ipfsetctl {
int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */
u_int ipfs_value; /* min value */
char ipfs_name[40]; /* tag name for this control */
} ipfsetctl_t;
/*
* Some of the statistics below are in their own counters, but most are kept
* in this single structure so that they can all easily be collected and
* copied back as required.
*/
typedef struct filterstats {
u_long fr_pass; /* packets allowed */
u_long fr_block; /* packets denied */
u_long fr_nom; /* packets which don't match any rule */
u_long fr_short; /* packets which are short */
u_long fr_ppkl; /* packets allowed and logged */
u_long fr_bpkl; /* packets denied and logged */
u_long fr_npkl; /* packets unmatched and logged */
u_long fr_pkl; /* packets logged */
u_long fr_skip; /* packets to be logged but buffer full */
u_long fr_ret; /* packets for which a return is sent */
u_long fr_acct; /* packets for which counting was performed */
u_long fr_bnfr; /* bad attempts to allocate fragment state */
u_long fr_nfr; /* new fragment state kept */
u_long fr_cfr; /* add new fragment state but complete pkt */
u_long fr_bads; /* bad attempts to allocate packet state */
u_long fr_ads; /* new packet state kept */
u_long fr_chit; /* cached hit */
u_long fr_tcpbad; /* TCP checksum check failures */
u_long fr_pull[2]; /* good and bad pullup attempts */
u_long fr_badsrc; /* source received doesn't match route */
u_long fr_badttl; /* TTL in packet doesn't reach minimum */
u_long fr_bad; /* bad IP packets to the filter */
u_long fr_ipv6; /* IPv6 packets in/out */
u_long fr_ppshit; /* dropped because of pps ceiling */
u_long fr_ipud; /* IP id update failures */
} filterstats_t;
/*
* Log structure. Each packet header logged is prepended by one of these.
* Following this in the log records read from the device will be an ipflog
* structure which is then followed by any packet data.
*/
typedef struct iplog {
u_32_t ipl_magic;
u_int ipl_count;
struct timeval ipl_time;
size_t ipl_dsize;
struct iplog *ipl_next;
} iplog_t;
#define ipl_sec ipl_time.tv_sec
#define ipl_usec ipl_time.tv_usec
#define IPL_MAGIC 0x49504c4d /* 'IPLM' */
#define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */
#define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */
#define IPLOG_SIZE sizeof(iplog_t)
typedef struct ipflog {
#if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
(defined(OpenBSD) && (OpenBSD >= 199603))
#else
u_int fl_unit;
#endif
u_32_t fl_rule;
u_32_t fl_flags;
u_32_t fl_lflags;
u_32_t fl_logtag;
ipftag_t fl_nattag;
u_short fl_plen; /* extra data after hlen */
u_short fl_loglevel; /* syslog log level */
char fl_group[FR_GROUPLEN];
u_char fl_hlen; /* length of IP headers saved */
u_char fl_dir;
u_char fl_xxx[2]; /* pad */
char fl_ifname[LIFNAMSIZ];
} ipflog_t;
#ifndef IPF_LOGGING
# define IPF_LOGGING 0
#endif
#ifndef IPF_DEFAULT_PASS
# define IPF_DEFAULT_PASS FR_PASS
#endif
#define DEFAULT_IPFLOGSIZE 8192
#ifndef IPFILTER_LOGSIZE
# define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE
#else
# if IPF_LOGSIZE < DEFAULT_IPFLOGSIZE
# error IPFILTER_LOGSISZE too small. Must be >= DEFAULT_IPFLOGSIZE
# endif
#endif
#define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
/*
* Device filenames for reading log information. Use ipf on Solaris2 because
* ipl is already a name used by something else.
*/
#ifndef IPL_NAME
# if SOLARIS
# define IPL_NAME "/dev/ipf"
# else
# define IPL_NAME "/dev/ipl"
# endif
#endif
/*
* Pathnames for various IP Filter control devices. Used by LKM
* and userland, so defined here.
*/
#define IPNAT_NAME "/dev/ipnat"
#define IPSTATE_NAME "/dev/ipstate"
#define IPAUTH_NAME "/dev/ipauth"
#define IPSYNC_NAME "/dev/ipsync"
#define IPSCAN_NAME "/dev/ipscan"
#define IPLOOKUP_NAME "/dev/iplookup"
#define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
#define IPL_LOGNAT 1
#define IPL_LOGSTATE 2
#define IPL_LOGAUTH 3
#define IPL_LOGSYNC 4
#define IPL_LOGSCAN 5
#define IPL_LOGLOOKUP 6
#define IPL_LOGCOUNT 7
#define IPL_LOGMAX 7
#define IPL_LOGSIZE IPL_LOGMAX + 1
#define IPL_LOGALL -1
#define IPL_LOGNONE -2
/*
* For SIOCGETFS
*/
typedef struct friostat {
struct filterstats f_st[2];
struct frentry *f_ipf[2][2];
struct frentry *f_acct[2][2];
struct frentry *f_ipf6[2][2];
struct frentry *f_acct6[2][2];
struct frentry *f_auth;
struct frgroup *f_groups[IPL_LOGSIZE][2];
u_long f_froute[2];
u_long f_ticks;
int f_locks[IPL_LOGMAX];
size_t f_kmutex_sz;
size_t f_krwlock_sz;
int f_defpass; /* default pass - from fr_pass */
int f_active; /* 1 or 0 - active rule set */
int f_running; /* 1 if running, else 0 */
int f_logging; /* 1 if enabled, else 0 */
int f_features;
char f_version[32]; /* version string */
} friostat_t;
#define f_fin f_ipf[0]
#define f_fin6 f_ipf6[0]
#define f_fout f_ipf[1]
#define f_fout6 f_ipf6[1]
#define f_acctin f_acct[0]
#define f_acctin6 f_acct6[0]
#define f_acctout f_acct[1]
#define f_acctout6 f_acct6[1]
#define IPF_FEAT_LKM 0x001
#define IPF_FEAT_LOG 0x002
#define IPF_FEAT_LOOKUP 0x004
#define IPF_FEAT_BPF 0x008
#define IPF_FEAT_COMPILED 0x010
#define IPF_FEAT_CKSUM 0x020
#define IPF_FEAT_SYNC 0x040
#define IPF_FEAT_SCAN 0x080
#define IPF_FEAT_IPV6 0x100
typedef struct optlist {
u_short ol_val;
int ol_bit;
} optlist_t;
/*
* Group list structure.
*/
typedef struct frgroup {
struct frgroup *fg_next;
struct frentry *fg_head;
struct frentry *fg_start;
u_32_t fg_flags;
int fg_ref;
char fg_name[FR_GROUPLEN];
} frgroup_t;
#define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name)
/*
* Used by state and NAT tables
*/
typedef struct icmpinfo {
u_short ici_id;
u_short ici_seq;
u_char ici_type;
} icmpinfo_t;
typedef struct udpinfo {
u_short us_sport;
u_short us_dport;
} udpinfo_t;
typedef struct tcpdata {
u_32_t td_end;
u_32_t td_maxend;
u_32_t td_maxwin;
u_32_t td_winscale;
u_32_t td_maxseg;
int td_winflags;
} tcpdata_t;
#define TCP_WSCALE_MAX 14
#define TCP_WSCALE_SEEN 0x00000001
#define TCP_WSCALE_FIRST 0x00000002
typedef struct tcpinfo {
u_short ts_sport;
u_short ts_dport;
tcpdata_t ts_data[2];
} tcpinfo_t;
typedef struct greinfo {
u_short gs_flags;
u_short gs_ptype;
u_short gs_call;
} greinfo_t;
typedef struct grehdr {
union {
struct grebits {
u_32_t grub_C:1;
u_32_t grub_R:1;
u_32_t grub_K:1;
u_32_t grub_S:1;
u_32_t grub_s:1;
u_32_t grub_recur:1;
u_32_t grub_A:1;
u_32_t grub_flags:3;
u_32_t grub_ver:3;
u_short grub_ptype;
} gru_bits;
u_short gru_flags;
} gr_un;
u_short gr_len;
u_short gr_call;
} grehdr_t;
#define gr_flags gr_un.gru_flags
#define gr_bits gr_un.gru_bits
#define gr_ptype gr_bits.grub_ptype
#define gr_C gr_bits.grub_C
#define gr_R gr_bits.grub_R
#define gr_K gr_bits.grub_K
#define gr_S gr_bits.grub_S
#define gr_s gr_bits.grub_s
#define gr_recur gr_bits.grub_recur
#define gr_A gr_bits.grub_A
#define gr_ver gr_bits.grub_ver
/*
* Timeout tail queue list member
*/
typedef struct ipftqent {
struct ipftqent **tqe_pnext;
struct ipftqent *tqe_next;
struct ipftq *tqe_ifq;
void *tqe_parent; /* pointer back to NAT/state struct */
u_long tqe_die; /* when this entriy is to die */
u_long tqe_touched;
int tqe_flags;
int tqe_state[2]; /* current state of this entry */
} ipftqent_t;
#define TQE_RULEBASED 0x00000001
/*
* Timeout tail queue head for IPFilter
*/
typedef struct ipftq {
ipfmutex_t ifq_lock;
u_int ifq_ttl;
ipftqent_t *ifq_head;
ipftqent_t **ifq_tail;
struct ipftq *ifq_next;
struct ipftq **ifq_pnext;
int ifq_ref;
u_int ifq_flags;
} ipftq_t;
#define IFQF_USER 0x01 /* User defined aging */
#define IPF_HZ_MULT 1
#define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */
/* checks its timeout queues. */
#define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
/*
* Structure to define address for pool lookups.
*/
typedef struct {
u_char adf_len;
i6addr_t adf_addr;
} addrfamily_t;
/*
* Object structure description. For passing through in ioctls.
*/
typedef struct ipfobj {
u_32_t ipfo_rev; /* IPFilter version number */
u_32_t ipfo_size; /* size of object at ipfo_ptr */
void *ipfo_ptr; /* pointer to object */
int ipfo_type; /* type of object being pointed to */
int ipfo_offset; /* bytes from ipfo_ptr where to start */
u_char ipfo_xxxpad[32]; /* reserved for future use */
} ipfobj_t;
#define IPFOBJ_FRENTRY 0 /* struct frentry */
#define IPFOBJ_IPFSTAT 1 /* struct friostat */
#define IPFOBJ_IPFINFO 2 /* struct fr_info */
#define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */
#define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */
#define IPFOBJ_IPNAT 5 /* struct ipnat */
#define IPFOBJ_NATSTAT 6 /* struct natstat */
#define IPFOBJ_STATESAVE 7 /* struct ipstate_save */
#define IPFOBJ_NATSAVE 8 /* struct nat_save */
#define IPFOBJ_NATLOOKUP 9 /* struct natlookup */
#define IPFOBJ_IPSTATE 10 /* struct ipstate */
#define IPFOBJ_STATESTAT 11 /* struct ips_stat */
#define IPFOBJ_FRAUTH 12 /* struct frauth */
#define IPFOBJ_TUNEABLE 13 /* struct ipftune */
typedef union ipftunevalptr {
void *ipftp_void;
u_long *ipftp_long;
u_int *ipftp_int;
u_short *ipftp_short;
u_char *ipftp_char;
} ipftunevalptr_t;
typedef struct ipftuneable {
ipftunevalptr_t ipft_una;
char *ipft_name;
u_long ipft_min;
u_long ipft_max;
int ipft_sz;
int ipft_flags;
} ipftuneable_t;
#define ipft_addr ipft_una.ipftp_void
#define ipft_plong ipft_una.ipftp_long
#define ipft_pint ipft_una.ipftp_int
#define ipft_pshort ipft_una.ipftp_short
#define ipft_pchar ipft_una.ipftp_char
#define IPFT_RDONLY 1 /* read-only */
#define IPFT_WRDISABLED 2 /* write when disabled only */
typedef union ipftuneval {
u_long ipftu_long;
u_int ipftu_int;
u_short ipftu_short;
u_char ipftu_char;
} ipftuneval_t;
typedef struct ipftune {
void *ipft_cookie;
ipftuneval_t ipft_un;
u_long ipft_min;
u_long ipft_max;
int ipft_sz;
int ipft_flags;
char ipft_name[80];
} ipftune_t;
#define ipft_vlong ipft_un.ipftu_long
#define ipft_vint ipft_un.ipftu_int
#define ipft_vshort ipft_un.ipftu_short
#define ipft_vchar ipft_un.ipftu_char
/*
** HPUX Port
*/
#ifdef __hpux
/* HP-UX locking sequence deadlock detection module lock MAJOR ID */
# define IPF_SMAJ 0 /* temp assignment XXX, not critical */
#endif
#if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
(__FreeBSD_version >= 220000)
# define CDEV_MAJOR 79
#endif
/*
* Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
* on those hooks. We don't need any special mods in non-IP Filter code
* with this!
*/
#if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
(defined(NetBSD1_2) && NetBSD1_2 > 1) || \
(defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
# if (NetBSD >= 199905)
# define PFIL_HOOKS
# endif
# ifdef PFIL_HOOKS
# define NETBSD_PF
# endif
#endif
#ifndef _KERNEL
extern int fr_check __P((struct ip *, int, void *, int, mb_t **));
extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
extern int ipf_log __P((void));
extern struct ifnet *get_unit __P((char *, int));
extern char *get_ifname __P((struct ifnet *));
# if defined(__NetBSD__) || defined(__OpenBSD__) || \
(_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000)
extern int iplioctl __P((int, ioctlcmd_t, caddr_t, int));
# else
extern int iplioctl __P((int, ioctlcmd_t, caddr_t, int));
# endif
extern int iplopen __P((dev_t, int));
extern int iplclose __P((dev_t, int));
extern void m_freem __P((mb_t *));
#else /* #ifndef _KERNEL */
extern void *fr_pullup __P((mb_t *, fr_info_t *, int));
# if defined(__NetBSD__) && defined(PFIL_HOOKS)
extern void ipfilterattach __P((int));
# endif
extern int ipl_enable __P((void));
extern int ipl_disable __P((void));
# ifdef MENTAT
extern int fr_check __P((struct ip *, int, void *, int, void *,
mblk_t **));
# if SOLARIS
# if SOLARIS2 >= 7
extern int iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
# else
extern int iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
# endif
extern int iplopen __P((dev_t *, int, int, cred_t *));
extern int iplclose __P((dev_t, int, int, cred_t *));
extern int iplread __P((dev_t, uio_t *, cred_t *));
# endif
# ifdef __hpux
extern int iplopen __P((dev_t, int, intptr_t, int));
extern int iplclose __P((dev_t, int, int));
extern int iplioctl __P((dev_t, int, caddr_t, int));
extern int iplread __P((dev_t, uio_t *));
extern int iplselect __P((dev_t, int));
# endif
extern int ipfsync __P((void));
extern int fr_qout __P((queue_t *, mblk_t *));
# else /* MENTAT */
extern int fr_check __P((struct ip *, int, void *, int, mb_t **));
extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
extern size_t mbufchainlen __P((mb_t *));
# ifdef __sgi
# include <sys/cred.h>
extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
extern int iplopen __P((dev_t *, int, int, cred_t *));
extern int iplclose __P((dev_t, int, int, cred_t *));
extern int iplread __P((dev_t, uio_t *, cred_t *));
extern int ipfsync __P((void));
extern int ipfilter_sgi_attach __P((void));
extern void ipfilter_sgi_detach __P((void));
extern void ipfilter_sgi_intfsync __P((void));
# else
# ifdef IPFILTER_LKM
extern int iplidentify __P((char *));
# endif
# if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
(NetBSD >= 199511) || defined(__OpenBSD__)
# if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \
defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
# if (__FreeBSD_version >= 500024)
extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
# else
extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
# endif /* __FreeBSD_version >= 500024 */
# else
extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
# endif
# if (__FreeBSD_version >= 500024)
extern int iplopen __P((dev_t, int, int, struct thread *));
extern int iplclose __P((dev_t, int, int, struct thread *));
# else
extern int iplopen __P((dev_t, int, int, struct proc *));
extern int iplclose __P((dev_t, int, int, struct proc *));
# endif /* __FreeBSD_version >= 500024 */
# else
# ifdef linux
extern int iplioctl __P((struct inode *, struct file *, u_int, u_long));
# else
extern int iplopen __P((dev_t, int));
extern int iplclose __P((dev_t, int));
extern int iplioctl __P((dev_t, int, caddr_t, int));
# endif
# endif /* (_BSDI_VERSION >= 199510) */
# if BSD >= 199306
extern int iplread __P((dev_t, struct uio *, int));
extern int iplwrite __P((dev_t, struct uio *, int));
# else
# ifndef linux
extern int iplread __P((dev_t, struct uio *));
extern int iplwrite __P((dev_t, struct uio *));
# endif
# endif /* BSD >= 199306 */
# endif /* __ sgi */
# endif /* MENTAT */
#endif /* #ifndef _KERNEL */
extern ipfmutex_t ipl_mutex, ipf_authmx, ipf_rw, ipf_hostmap;
extern ipfmutex_t ipf_timeoutlock, ipf_stinsert, ipf_natio, ipf_nat_new;
extern ipfrwlock_t ipf_mutex, ipf_global, ip_poolrw, ipf_ipidfrag;
extern ipfrwlock_t ipf_frag, ipf_state, ipf_nat, ipf_natfrag, ipf_auth;
extern char *memstr __P((char *, char *, int, int));
extern int count4bits __P((u_32_t));
extern int frrequest __P((int, ioctlcmd_t, caddr_t, int, int));
extern char *getifname __P((struct ifnet *));
extern int iplattach __P((void));
extern int ipldetach __P((void));
extern u_short ipf_cksum __P((u_short *, int));
extern int copyinptr __P((void *, void *, size_t));
extern int copyoutptr __P((void *, void *, size_t));
extern int fr_inobj __P((void *, void *, int));
extern int fr_inobjsz __P((void *, void *, int, int));
extern int fr_ioctlswitch __P((int, void *, ioctlcmd_t, int));
extern int fr_ipftune __P((ioctlcmd_t, void *));
extern int fr_outobj __P((void *, void *, int));
extern int fr_outobjsz __P((void *, void *, int, int));
extern int fr_send_reset __P((fr_info_t *));
extern int fr_send_icmp_err __P((int, fr_info_t *, int));
extern void fr_resolvdest __P((struct frdest *, int));
extern int fr_resolvefunc __P((void *));
extern int fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
#if (__FreeBSD_version < 490000) || !defined(_KERNEL)
extern int ppsratecheck __P((struct timeval *, int *, int));
#endif
extern ipftq_t *fr_addtimeoutqueue __P((ipftq_t **, u_int));
extern void fr_deletetimeoutqueue __P((ipftq_t *));
extern void fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *));
extern void fr_queueappend __P((ipftqent_t *, ipftq_t *, void *));
extern void fr_queueback __P((ipftqent_t *));
extern void fr_queuefront __P((ipftqent_t *));
extern void fr_checkv4sum __P((fr_info_t *));
extern int fr_checkl4sum __P((fr_info_t *));
extern int fr_ifpfillv4addr __P((int, struct sockaddr_in *,
struct sockaddr_in *, struct in_addr *,
struct in_addr *));
extern int fr_coalesce __P((fr_info_t *));
#ifdef USE_INET6
extern void fr_checkv6sum __P((fr_info_t *));
extern int fr_ifpfillv6addr __P((int, struct sockaddr_in6 *,
struct sockaddr_in6 *, struct in_addr *,
struct in_addr *));
#endif
extern int frflush __P((minor_t, int, int));
extern void frsync __P((void));
extern frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int));
extern int fr_derefrule __P((frentry_t **));
extern void fr_delgroup __P((char *, minor_t, int));
extern frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***));
extern int fr_loginit __P((void));
extern int ipflog_clear __P((minor_t));
extern int ipflog_read __P((minor_t, uio_t *));
extern int ipflog __P((fr_info_t *, u_int));
extern int ipllog __P((int, fr_info_t *, void **, size_t *, int *, int));
extern void fr_logunload __P((void));
extern frentry_t *fr_acctpkt __P((fr_info_t *, u_32_t *));
extern int fr_copytolog __P((int, char *, int));
extern u_short fr_cksum __P((mb_t *, ip_t *, int, void *));
extern void fr_deinitialise __P((void));
extern frentry_t *fr_dolog __P((fr_info_t *, u_32_t *));
extern frentry_t *fr_dstgrpmap __P((fr_info_t *, u_32_t *));
extern void fr_fixskip __P((frentry_t **, frentry_t *, int));
extern void fr_forgetifp __P((void *));
extern frentry_t *fr_getrulen __P((int, char *, u_32_t));
extern void fr_getstat __P((struct friostat *));
extern int fr_ifpaddr __P((int, int, void *,
struct in_addr *, struct in_addr *));
extern int fr_initialise __P((void));
extern void fr_lock __P((caddr_t, int *));
extern int fr_makefrip __P((int, ip_t *, fr_info_t *));
extern int fr_matchtag __P((ipftag_t *, ipftag_t *));
extern int fr_matchicmpqueryreply __P((int, icmpinfo_t *,
struct icmp *, int));
extern u_32_t fr_newisn __P((fr_info_t *));
extern u_short fr_nextipid __P((fr_info_t *));
extern int fr_rulen __P((int, frentry_t *));
extern int fr_scanlist __P((fr_info_t *, u_32_t));
extern frentry_t *fr_srcgrpmap __P((fr_info_t *, u_32_t *));
extern int fr_tcpudpchk __P((fr_info_t *, frtuc_t *));
extern int fr_verifysrc __P((fr_info_t *fin));
extern int fr_zerostats __P((char *));
extern int fr_unreach;
extern int fr_running;
extern u_long fr_frouteok[2];
extern int fr_pass;
extern int fr_flags;
extern int fr_active;
extern int fr_chksrc;
extern int fr_minttl;
extern int fr_refcnt;
extern int fr_control_forwarding;
extern int fr_update_ipid;
extern int nat_logging;
extern int ipstate_logging;
extern int ipl_suppress;
extern int ipl_buffer_sz;
extern int ipl_logmax;
extern int ipl_logall;
extern u_long fr_ticks;
extern fr_info_t frcache[2][8];
extern char ipfilter_version[];
extern iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1];
extern int iplused[IPL_LOGMAX + 1];
extern struct frentry *ipfilter[2][2], *ipacct[2][2];
#ifdef USE_INET6
extern struct frentry *ipfilter6[2][2], *ipacct6[2][2];
extern int icmptoicmp6types[ICMP_MAXTYPE+1];
extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
extern int icmpreplytype6[ICMP6_MAXTYPE + 1];
#endif
extern int icmpreplytype4[ICMP_MAXTYPE + 1];
extern struct frgroup *ipfgroups[IPL_LOGSIZE][2];
extern struct filterstats frstats[];
extern frentry_t *ipfrule_match __P((fr_info_t *));
extern u_char ipf_iss_secret[32];
extern ipftuneable_t ipf_tuneables[];
#endif /* _NETINET_IP_FIL_H_ */
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