Import a subset of PF distribution files

We do not support any PF functionality, nor do we intend to.  However,
some NetBSD utilities rely on the presence of these files.  Not all of
the files are installed.  The NetBSD source seems rather inconsistent
in where from to include these files.  We simply follow what NetBSD
does, though.

Change-Id: Ib244dfcc60b16ebc4697af22f71b7e014374b855

dist/pf/sbin/pfctl/pfctl.h

@@ -0,0 +1,127 @@
+/*	$NetBSD: pfctl.h,v 1.5 2008/06/18 09:06:26 yamt Exp $	*/
+/*	$OpenBSD: pfctl.h,v 1.41 2007/05/31 04:13:37 mcbride Exp $ */
+
+/*
+ * Copyright (c) 2001 Daniel Hartmeier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    - Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef _PFCTL_H_
+#define _PFCTL_H_
+
+enum pfctl_show { PFCTL_SHOW_RULES, PFCTL_SHOW_LABELS, PFCTL_SHOW_NOTHING };
+
+enum {	PFRB_TABLES = 1, PFRB_TSTATS, PFRB_ADDRS, PFRB_ASTATS,
+	PFRB_IFACES, PFRB_TRANS, PFRB_MAX };
+struct pfr_buffer {
+	int	 pfrb_type;	/* type of content, see enum above */
+	int	 pfrb_size;	/* number of objects in buffer */
+	int	 pfrb_msize;	/* maximum number of objects in buffer */
+	void	*pfrb_caddr;	/* malloc'ated memory area */
+};
+#define PFRB_FOREACH(var, buf)				\
+	for ((var) = pfr_buf_next((buf), NULL);		\
+	    (var) != NULL;				\
+	    (var) = pfr_buf_next((buf), (var)))
+
+void	 pfr_set_fd(int);
+int	 pfr_get_fd(void);
+int	 pfr_clr_tables(struct pfr_table *, int *, int);
+int	 pfr_add_tables(struct pfr_table *, int, int *, int);
+int	 pfr_del_tables(struct pfr_table *, int, int *, int);
+int	 pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
+int	 pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
+int	 pfr_clr_tstats(struct pfr_table *, int, int *, int);
+int	 pfr_clr_addrs(struct pfr_table *, int *, int);
+int	 pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, int);
+int	 pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, int);
+int	 pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int *, int *, int *, int);
+int	 pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
+int	 pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
+int	 pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, int);
+int	 pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, int);
+int	 pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
+int	 pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int *, int, int);
+void	 pfr_buf_clear(struct pfr_buffer *);
+int	 pfr_buf_add(struct pfr_buffer *, const void *);
+void	*pfr_buf_next(struct pfr_buffer *, const void *);
+int	 pfr_buf_grow(struct pfr_buffer *, int);
+int	 pfr_buf_load(struct pfr_buffer *, char *, int,
+	    int (*)(struct pfr_buffer *, char *, int));
+char	*pfr_strerror(int);
+int	 pfi_get_ifaces(const char *, struct pfi_kif *, int *);
+int	 pfi_clr_istats(const char *, int *, int);
+
+void	 pfctl_print_title(char *);
+int	 pfctl_clear_tables(const char *, int);
+int	 pfctl_show_tables(const char *, int);
+int	 pfctl_command_tables(int, char *[], char *, const char *, char *,
+	    const char *, int);
+int	 pfctl_show_altq(int, const char *, int, int);
+void	 warn_namespace_collision(const char *);
+int	 pfctl_show_ifaces(const char *, int);
+FILE	*pfctl_fopen(const char *, const char *);
+
+#ifndef DEFAULT_PRIORITY
+#define DEFAULT_PRIORITY	1
+#endif
+
+#ifndef DEFAULT_QLIMIT
+#define DEFAULT_QLIMIT		50
+#endif
+
+/*
+ * generalized service curve used for admission control
+ */
+struct segment {
+	LIST_ENTRY(segment)	_next;
+	double			x, y, d, m;
+};
+
+extern	int loadopt;
+
+int		 check_commit_altq(int, int);
+void		 pfaltq_store(struct pf_altq *);
+struct pf_altq	*pfaltq_lookup(const char *);
+char		*rate2str(double);
+
+void	 print_addr(struct pf_addr_wrap *, sa_family_t, int);
+void	 print_host(struct pfsync_state_host *, sa_family_t, int);
+void	 print_seq(struct pfsync_state_peer *);
+void	 print_state(struct pfsync_state *, int);
+int	 unmask(struct pf_addr *, sa_family_t);
+
+int	 pfctl_cmdline_symset(char *);
+int	 pfctl_add_trans(struct pfr_buffer *, int, const char *);
+u_int32_t
+	 pfctl_get_ticket(struct pfr_buffer *, int, const char *);
+int	 pfctl_trans(int, struct pfr_buffer *, u_long, int);
+
+#endif /* _PFCTL_H_ */