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-rw-r--r--sys/contrib/ipfilter/netinet/ip_fil.h1551
1 files changed, 1551 insertions, 0 deletions
diff --git a/sys/contrib/ipfilter/netinet/ip_fil.h b/sys/contrib/ipfilter/netinet/ip_fil.h
new file mode 100644
index 0000000..dc5a473
--- /dev/null
+++ b/sys/contrib/ipfilter/netinet/ip_fil.h
@@ -0,0 +1,1551 @@
+/*
+ * 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
+ * $FreeBSD$
+ * Id: ip_fil.h,v 2.170.2.29 2006/03/29 11:19:55 darrenr Exp $
+ */
+
+#ifndef __IP_FIL_H__
+#define __IP_FIL_H__
+
+#include "netinet/ip_compat.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__) || defined(_AIX51)
+# 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 SIOCSTAT1 _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 SIOCSTAT2 _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)
+# define SIOCIPFITER _IOWR('r', 91, struct ipfobj)
+# define SIOCGENITER _IOWR('r', 92, struct ipfobj)
+# define SIOCGTABL _IOWR('r', 93, struct ipfobj)
+# define SIOCIPFDELTOK _IOWR('r', 94, int)
+# define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj)
+# define SIOCGTQTAB _IOWR('r', 96, struct ipfobj)
+#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 SIOCSTAT1 _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 SIOCSTAT2 _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)
+# define SIOCIPFITER _IOWR(r, 91, struct ipfobj)
+# define SIOCGENITER _IOWR(r, 92, struct ipfobj)
+# define SIOCGTABL _IOWR(r, 93, struct ipfobj)
+# define SIOCIPFDELTOK _IOWR(r, 94, int)
+# define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj)
+# define SIOCGTQTAB _IOWR(r, 96, struct ipfobj)
+#endif
+#define SIOCADDFR SIOCADAFR
+#define SIOCDELFR SIOCRMAFR
+#define SIOCINSFR SIOCINAFR
+#define SIOCATHST SIOCSTAT1
+#define SIOCGFRST SIOCSTAT2
+
+
+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];
+ struct {
+ u_short type;
+ u_short subtype;
+ char label[12];
+ } i6un;
+} i6addr_t;
+#else
+typedef union i6addr {
+ u_32_t i6[4];
+ struct in_addr in4;
+ void *vptr[2];
+ lookupfunc_t lptr[2];
+ struct {
+ u_short type;
+ u_short subtype;
+ char label[12];
+ } i6un;
+} i6addr_t;
+#endif
+
+#define in4_addr in4.s_addr
+#define iplookupnum i6[1]
+#define iplookupname i6un.label
+#define iplookuptype i6un.type
+#define iplookupsubtype i6un.subtype
+/*
+ * 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_FRAGBODY 0x2000
+#define FI_BADSRC 0x4000
+#define FI_LOWTTL 0x8000
+#define FI_CMP 0xcfe3 /* Not FI_FRAG,FI_NATED,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_srcname fi_src.iplookupname
+#define fi_dstname fi_dst.iplookupname
+#define fi_srctype fi_src.iplookuptype
+#define fi_dsttype fi_dst.iplookuptype
+#define fi_srcsubtype fi_src.iplookupsubtype
+#define fi_dstsubtype fi_dst.iplookupsubtype
+#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;
+ void *fin_exthdr;
+ 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;
+ char fin_ifname[LIFNAMSIZ];
+#endif
+#ifdef __sgi
+ void *fin_hbuf;
+#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_dlookup fri_mip.fi_dst
+#define fri_slookup fri_mip.fi_src
+#define fri_dstnum fri_mip.fi_dstnum
+#define fri_srcnum fri_mip.fi_srcnum
+#define fri_dstname fri_mip.fi_dstname
+#define fri_srcname fri_mip.fi_srcname
+#define fri_dstptr fri_mip.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 */
+ /*
+ * The line number from a file is here because we need to be able to
+ * match the rule generated with ``grep rule ipf.conf | ipf -rf -''
+ * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be
+ * on the other side of fr_func.
+ */
+ int fr_flineno; /* line number from conf file */
+ /*
+ * 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 */
+ 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_dlookup fr_ip.fi_dst
+#define fr_slookup fr_ip.fi_src
+#define fr_dstname fr_ip.fi_dstname
+#define fr_srcname fr_ip.fi_srcname
+#define fr_dsttype fr_ip.fi_dsttype
+#define fr_srctype fr_ip.fi_srctype
+#define fr_dstsubtype fr_ip.fi_dstsubtype
+#define fr_srcsubtype fr_ip.fi_srcsubtype
+#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_func))
+
+/*
+ * 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_STATESYNC 0x1000000 /* synchronize state to slave */
+#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 IPFILTER_LOGSIZE < DEFAULT_IPFLOGSIZE
+# error IPFILTER_LOGSIZE 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
+#define TCP_SACK_PERMIT 0x00000004
+
+
+typedef struct tcpinfo {
+ u_short ts_sport;
+ u_short ts_dport;
+ tcpdata_t ts_data[2];
+} tcpinfo_t;
+
+
+/*
+ * Structures to define a GRE header as seen in a packet.
+ */
+struct grebits {
+ u_32_t grb_C:1;
+ u_32_t grb_R:1;
+ u_32_t grb_K:1;
+ u_32_t grb_S:1;
+ u_32_t grb_s:1;
+ u_32_t grb_recur:1;
+ u_32_t grb_A:1;
+ u_32_t grb_flags:3;
+ u_32_t grb_ver:3;
+ u_short grb_ptype;
+};
+
+typedef struct grehdr {
+ union {
+ struct grebits 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.grb_ptype
+#define gr_C gr_bits.grb_C
+#define gr_R gr_bits.grb_R
+#define gr_K gr_bits.grb_K
+#define gr_S gr_bits.grb_S
+#define gr_s gr_bits.grb_s
+#define gr_recur gr_bits.grb_recur
+#define gr_A gr_bits.grb_A
+#define gr_ver gr_bits.grb_ver
+
+/*
+ * GRE information tracked by "keep state"
+ */
+typedef struct greinfo {
+ u_short gs_call[2];
+ u_short gs_flags;
+ u_short gs_ptype;
+} greinfo_t;
+
+#define GRE_REV(x) ((ntohs(x) >> 13) & 7)
+
+
+/*
+ * Format of an Authentication header
+ */
+typedef struct authhdr {
+ u_char ah_next;
+ u_char ah_plen;
+ u_short ah_reserved;
+ u_32_t ah_spi;
+ u_32_t ah_seq;
+ /* Following the sequence number field is 0 or more bytes of */
+ /* authentication data, as specified by ah_plen - RFC 2402. */
+} authhdr_t;
+
+
+/*
+ * 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 IFQF_DELETE 0x02 /* Marked for deletion */
+#define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */
+
+#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)
+
+typedef int (*ipftq_delete_fn_t)(void *);
+
+/*
+ * 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 */
+#define IPFOBJ_NAT 14 /* struct nat */
+#define IPFOBJ_IPFITER 15 /* struct ipfruleiter */
+#define IPFOBJ_GENITER 16 /* struct ipfgeniter */
+#define IPFOBJ_GTABLE 17 /* struct ipftable */
+#define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */
+#define IPFOBJ_STATETQTAB 19 /* struct ipftq [NSTATES] */
+#define IPFOBJ_COUNT 20 /* How many #defines are above this? */
+
+
+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;
+ const char *ipft_name;
+ u_long ipft_min;
+ u_long ipft_max;
+ int ipft_sz;
+ int ipft_flags;
+ struct ipftuneable *ipft_next;
+} 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
+
+/*
+ *
+ */
+typedef struct ipfruleiter {
+ int iri_inout;
+ char iri_group[FR_GROUPLEN];
+ int iri_active;
+ int iri_nrules;
+ int iri_v;
+ frentry_t *iri_rule;
+} ipfruleiter_t;
+
+/*
+ * Values for iri_inout
+ */
+#define F_IN 0
+#define F_OUT 1
+#define F_ACIN 2
+#define F_ACOUT 3
+
+
+typedef struct ipfgeniter {
+ int igi_type;
+ int igi_nitems;
+ void *igi_data;
+} ipfgeniter_t;
+
+#define IPFGENITER_IPF 0
+#define IPFGENITER_NAT 1
+#define IPFGENITER_IPNAT 2
+#define IPFGENITER_FRAG 3
+#define IPFGENITER_AUTH 4
+#define IPFGENITER_STATE 5
+#define IPFGENITER_NATFRAG 6
+#define IPFGENITER_HOSTMAP 7
+#define IPFGENITER_LOOKUP 8
+
+typedef struct ipftable {
+ int ita_type;
+ void *ita_table;
+} ipftable_t;
+
+#define IPFTABLE_BUCKETS 1
+
+
+/*
+ *
+ */
+typedef struct ipftoken {
+ struct ipftoken *ipt_next;
+ struct ipftoken **ipt_pnext;
+ void *ipt_ctx;
+ void *ipt_data;
+ u_long ipt_die;
+ int ipt_type;
+ int ipt_uid;
+ int ipt_subtype;
+ int ipt_alive;
+} ipftoken_t;
+
+
+/*
+** 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 defined(NetBSD) && (NetBSD >= 199905)
+# define PFIL_HOOKS
+# endif
+# ifdef PFIL_HOOKS
+# define NETBSD_PF
+# endif
+#endif
+
+#ifdef _KERNEL
+# define FR_VERBOSE(verb_pr)
+# define FR_DEBUG(verb_pr)
+#else
+extern void debug __P((char *, ...));
+extern void verbose __P((char *, ...));
+# define FR_VERBOSE(verb_pr) verbose verb_pr
+# define FR_DEBUG(verb_pr) debug verb_pr
+#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 *));
+extern int bcopywrap __P((void *, void *, size_t));
+#else /* #ifndef _KERNEL */
+# ifdef BSD
+# if (defined(__NetBSD__) && (__NetBSD_Version__ < 399000000)) || \
+ defined(__osf__) || \
+ (defined(__FreeBSD_version) && (__FreeBSD_version < 500043))
+# include <sys/select.h>
+# else
+# include <sys/selinfo.h>
+# endif
+extern struct selinfo ipfselwait[IPL_LOGSIZE];
+# endif
+# if defined(__NetBSD__) && defined(PFIL_HOOKS)
+extern void ipfilterattach __P((int));
+# endif
+extern int ipl_enable __P((void));
+extern int ipl_disable __P((void));
+extern int ipf_inject __P((fr_info_t *, mb_t *));
+# 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 *));
+extern int iplwrite __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 iplwrite __P((dev_t, uio_t *));
+extern int iplselect __P((dev_t, int));
+# endif
+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 iplwrite __P((dev_t, uio_t *, cred_t *));
+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 (defined(_BSDI_VERSION) && _BSDI_VERSION >= 199510) || \
+ (__FreeBSD_version >= 220000) || \
+ (NetBSD >= 199511) || defined(__OpenBSD__)
+# if defined(__NetBSD__) || \
+ (defined(_BSDI_VERSION) && _BSDI_VERSION >= 199701) || \
+ defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
+# if (__FreeBSD_version >= 500024)
+# if (__FreeBSD_version >= 502116)
+extern int iplioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
+# else
+extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
+# endif /* __FreeBSD_version >= 502116 */
+# else
+# if (__NetBSD_Version__ >= 499001000)
+extern int iplioctl __P((dev_t, u_long, void *, int, struct lwp *));
+# else
+# if (__NetBSD_Version__ >= 399001400)
+extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct lwp *));
+# else
+extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
+# endif
+# endif
+# endif /* __FreeBSD_version >= 500024 */
+# else
+extern int iplioctl __P((dev_t, int, caddr_t, int, struct thread *));
+# endif
+# if (__FreeBSD_version >= 500024)
+# if (__FreeBSD_version >= 502116)
+extern int iplopen __P((struct cdev*, int, int, struct thread *));
+extern int iplclose __P((struct cdev*, int, int, struct thread *));
+# else
+extern int iplopen __P((dev_t, int, int, struct thread *));
+extern int iplclose __P((dev_t, int, int, struct thread *));
+# endif /* __FreeBSD_version >= 502116 */
+# else
+# if (__NetBSD_Version__ >= 399001400)
+extern int iplopen __P((dev_t, int, int, struct lwp *));
+extern int iplclose __P((dev_t, int, int, struct lwp *));
+# else
+extern int iplopen __P((dev_t, int, int, struct proc *));
+extern int iplclose __P((dev_t, int, int, struct proc *));
+# endif /* __NetBSD_Version__ >= 399001400 */
+# 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
+# if (__FreeBSD_version >= 502116)
+extern int iplread __P((struct cdev*, struct uio *, int));
+extern int iplwrite __P((struct cdev*, struct uio *, int));
+# else
+extern int iplread __P((dev_t, struct uio *, int));
+extern int iplwrite __P((dev_t, struct uio *, int));
+# endif /* __FreeBSD_version >= 502116 */
+# 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 ipfrwlock_t ipf_frcache, ipf_tokens;
+
+extern char *memstr __P((const char *, char *, size_t, size_t));
+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 ipfattach __P((void));
+extern int ipfdetach __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_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_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, int, void *));
+extern int fr_ipf_ioctl __P((caddr_t, ioctlcmd_t, int, int, void *));
+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 void *fr_pullup __P((mb_t *, fr_info_t *, int));
+extern void fr_resolvedest __P((struct frdest *, int));
+extern int fr_resolvefunc __P((void *));
+extern void *fr_resolvenic __P((char *, int));
+extern int fr_send_icmp_err __P((int, fr_info_t *, int));
+extern int fr_send_reset __P((fr_info_t *));
+#if (__FreeBSD_version < 501000) || !defined(_KERNEL)
+extern int ppsratecheck __P((struct timeval *, int *, int));
+#endif
+extern ipftq_t *fr_addtimeoutqueue __P((ipftq_t **, u_int));
+extern void fr_deletequeueentry __P((ipftqent_t *));
+extern int fr_deletetimeoutqueue __P((ipftq_t *));
+extern void fr_freetimeoutqueue __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 fr_addipftune __P((ipftuneable_t *));
+extern int fr_delipftune __P((ipftuneable_t *));
+
+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_canread __P((int));
+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 *, int));
+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 ipf_queueflush __P((ipftq_delete_fn_t, ipftq_t *, ipftq_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 ipftoken_t *ipf_findtoken __P((int, int, void *));
+extern int ipf_getnextrule __P((ipftoken_t *, void *));
+extern void ipf_expiretokens __P((void));
+extern void ipf_freetoken __P((ipftoken_t *));
+extern int ipf_deltoken __P((int,int, void *));
+extern int ipfsync __P((void));
+extern int ipf_genericiter __P((void *, int, void *));
+
+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_logmax;
+extern int ipl_logall;
+extern int ipl_logsize;
+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 /* __IP_FIL_H__ */
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