Move IPFilter into contrib.

1 files changed, 196 insertions, 0 deletions

diff --git a/sys/contrib/ipfilter/netinet/ip_state.h b/sys/contrib/ipfilter/netinet/ip_state.h
new file mode 100644
index 000000000000..765709c047c4
--- /dev/null
+++ b/sys/contrib/ipfilter/netinet/ip_state.h
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 1995-2000 by Darren Reed.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and due credit is given
+ * to the original author and the contributors.
+ *
+ * @(#)ip_state.h	1.3 1/12/96 (C) 1995 Darren Reed
+ * $Id: ip_state.h,v 2.13.2.1 2000/07/08 02:15:35 darrenr Exp $
+ * $FreeBSD$
+ */
+#ifndef	__IP_STATE_H__
+#define	__IP_STATE_H__
+
+#if defined(__STDC__) || defined(__GNUC__)
+# define	SIOCDELST	_IOW('r', 61, struct ipstate *)
+#else
+# define	SIOCDELST	_IOW(r, 61, struct ipstate *)
+#endif
+
+#define	IPSTATE_SIZE	5737
+#define	IPSTATE_MAX	4013	/* Maximum number of states held */
+
+#define	PAIRS(s1,d1,s2,d2)	((((s1) == (s2)) && ((d1) == (d2))) ||\
+				 (((s1) == (d2)) && ((d1) == (s2))))
+#define	IPPAIR(s1,d1,s2,d2)	PAIRS((s1).s_addr, (d1).s_addr, \
+				      (s2).s_addr, (d2).s_addr)
+
+
+typedef struct udpstate {
+	u_short	us_sport;
+	u_short	us_dport;
+} udpstate_t;
+
+typedef struct icmpstate {
+	u_short	ics_id;
+	u_short	ics_seq;
+	u_char	ics_type;
+} icmpstate_t;
+
+typedef	struct	tcpdata	{
+	u_32_t	td_end;
+	u_32_t	td_maxend;
+	u_short	td_maxwin;
+} tcpdata_t;
+
+typedef	struct tcpstate {
+	u_short	ts_sport;
+	u_short	ts_dport;
+	tcpdata_t ts_data[2];
+	u_char	ts_state[2];
+} tcpstate_t;
+
+typedef struct ipstate {
+	struct	ipstate	*is_next;
+	struct	ipstate	**is_pnext;
+	struct	ipstate	*is_hnext;
+	struct	ipstate	**is_phnext;
+	u_long	is_age;
+	u_int	is_pass;
+	U_QUAD_T	is_pkts;
+	U_QUAD_T	is_bytes;
+	void	*is_ifp[2];
+	frentry_t	*is_rule;
+	union	i6addr	is_src;
+	union	i6addr	is_dst;
+	u_char	is_p;			/* Protocol */
+	u_char	is_v;
+	u_int	is_hv;
+	u_32_t	is_flags;
+	u_32_t	is_opt;			/* packet options set */
+	u_32_t	is_optmsk;		/*    "      "    mask */
+	u_short	is_sec;			/* security options set */
+	u_short	is_secmsk;		/*    "        "    mask */
+	u_short	is_auth;		/* authentication options set */
+	u_short	is_authmsk;		/*    "              "    mask */
+	union {
+		icmpstate_t	is_ics;
+		tcpstate_t	is_ts;
+		udpstate_t	is_us;
+	} is_ps;
+	char	is_ifname[2][IFNAMSIZ];
+#if SOLARIS || defined(__sgi)
+	kmutex_t	is_lock;
+#endif
+} ipstate_t;
+
+#define	is_saddr	is_src.in4.s_addr
+#define	is_daddr	is_dst.in4.s_addr
+#define	is_icmp		is_ps.is_ics
+#define	is_type		is_icmp.ics_type
+#define	is_code		is_icmp.ics_code
+#define	is_tcp		is_ps.is_ts
+#define	is_udp		is_ps.is_us
+#define is_send		is_tcp.ts_data[0].td_end
+#define is_dend		is_tcp.ts_data[1].td_end
+#define is_maxswin	is_tcp.ts_data[0].td_maxwin
+#define is_maxdwin	is_tcp.ts_data[1].td_maxwin
+#define is_maxsend	is_tcp.ts_data[0].td_maxend
+#define is_maxdend	is_tcp.ts_data[1].td_maxend
+#define	is_sport	is_tcp.ts_sport
+#define	is_dport	is_tcp.ts_dport
+#define	is_state	is_tcp.ts_state
+#define	is_ifpin	is_ifp[0]
+#define	is_ifpout	is_ifp[1]
+
+#define	TH_OPENING	(TH_SYN|TH_ACK)
+/*
+ * is_flags:
+ * Bits 0 - 3 are use as a mask with the current packet's bits to check for
+ * whether it is short, tcp/udp, a fragment or the presence of IP options.
+ * Bits 4 - 7 are set from the initial packet and contain what the packet
+ * anded with bits 0-3 must match.
+ * Bits 8,9 are used to indicate wildcard source/destination port matching.
+ */
+
+typedef	struct	ipstate_save	{
+	void	*ips_next;
+	struct	ipstate	ips_is;
+	struct	frentry	ips_fr;
+} ipstate_save_t;
+
+#define	ips_rule	ips_is.is_rule
+
+
+typedef	struct	ipslog	{
+	U_QUAD_T	isl_pkts;
+	U_QUAD_T	isl_bytes;
+	union	i6addr	isl_src;
+	union	i6addr	isl_dst;
+	u_short	isl_type;
+	union {
+		u_short	isl_filler[2];
+		u_short	isl_ports[2];
+		u_short	isl_icmp;
+	} isl_ps;
+	u_char	isl_v;
+	u_char	isl_p;
+	u_char	isl_flags;
+	u_char	isl_state[2];
+} ipslog_t;
+
+#define	isl_sport	isl_ps.isl_ports[0]
+#define	isl_dport	isl_ps.isl_ports[1]
+#define	isl_itype	isl_ps.isl_icmp
+
+#define	ISL_NEW		0
+#define	ISL_EXPIRE	0xffff
+#define	ISL_FLUSH	0xfffe
+#define	ISL_REMOVE	0xfffd
+
+
+typedef	struct	ips_stat {
+	u_long	iss_hits;
+	u_long	iss_miss;
+	u_long	iss_max;
+	u_long	iss_tcp;
+	u_long	iss_udp;
+	u_long	iss_icmp;
+	u_long	iss_nomem;
+	u_long	iss_expire;
+	u_long	iss_fin;
+	u_long	iss_active;
+	u_long	iss_logged;
+	u_long	iss_logfail;
+	u_long	iss_inuse;
+	ipstate_t **iss_table;
+	ipstate_t *iss_list;
+} ips_stat_t;
+
+
+extern	u_long	fr_tcpidletimeout;
+extern	u_long	fr_tcpclosewait;
+extern	u_long	fr_tcplastack;
+extern	u_long	fr_tcptimeout;
+extern	u_long	fr_tcpclosed;
+extern	u_long	fr_tcphalfclosed;
+extern	u_long	fr_udptimeout;
+extern	u_long	fr_icmptimeout;
+extern	int	fr_state_lock;
+extern	int	fr_stateinit __P((void));
+extern	int	fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *));
+extern	ipstate_t	*fr_addstate __P((ip_t *, fr_info_t *, u_int));
+extern	frentry_t	*fr_checkstate __P((ip_t *, fr_info_t *));
+extern	void	ip_statesync __P((void *));
+extern	void	fr_timeoutstate __P((void));
+extern	void	fr_tcp_age __P((u_long *, u_char *, fr_info_t *, int));
+extern	void	fr_stateunload __P((void));
+extern	void	ipstate_log __P((struct ipstate *, u_int));
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+extern	int	fr_state_ioctl __P((caddr_t, u_long, int));
+#else
+extern	int	fr_state_ioctl __P((caddr_t, int, int));
+#endif
+
+#endif /* __IP_STATE_H__ */