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author | darrenr <darrenr@FreeBSD.org> | 2000-05-10 13:37:51 +0000 |
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committer | darrenr <darrenr@FreeBSD.org> | 2000-05-10 13:37:51 +0000 |
commit | 5419f3d5951bfa7ddfea18f6623c918e633fe2de (patch) | |
tree | c3a4574b3bb25074705fc76c643ac47195c55d27 /sys/net/pfil.h | |
parent | bc4bf27e62e20a5e26c1bd5352624188be07c599 (diff) | |
download | FreeBSD-src-5419f3d5951bfa7ddfea18f6623c918e633fe2de.zip FreeBSD-src-5419f3d5951bfa7ddfea18f6623c918e633fe2de.tar.gz |
Add pfil(9) subroutines and manpage from NetBSD.
Diffstat (limited to 'sys/net/pfil.h')
-rw-r--r-- | sys/net/pfil.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/sys/net/pfil.h b/sys/net/pfil.h new file mode 100644 index 0000000..7831328 --- /dev/null +++ b/sys/net/pfil.h @@ -0,0 +1,81 @@ +/* $FreeBSD$ */ + +/* + * Copyright (c) 1996 Matthew R. Green + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _NET_PFIL_H_ +#define _NET_PFIL_H_ + +#include <sys/queue.h> + +struct mbuf; +struct ifnet; + +/* + * The packet filter hooks are designed for anything to call them to + * possibly intercept the packet. + */ +struct packet_filter_hook { + TAILQ_ENTRY(packet_filter_hook) pfil_link; + int (*pfil_func) __P((void *, int, struct ifnet *, int, + struct mbuf **)); + int pfil_flags; +}; + +#define PFIL_IN 0x00000001 +#define PFIL_OUT 0x00000002 +#define PFIL_WAITOK 0x00000004 +#define PFIL_ALL (PFIL_IN|PFIL_OUT) + +typedef TAILQ_HEAD(pfil_list, packet_filter_hook) pfil_list_t; + +struct pfil_head { + pfil_list_t ph_in; + pfil_list_t ph_out; + int ph_init; +} pfil_head_t; + +struct packet_filter_hook *pfil_hook_get __P((int, struct pfil_head *)); +int pfil_add_hook __P((int (*func) __P((void *, int, + struct ifnet *, int, struct mbuf **)), int, struct pfil_head *)); +int pfil_remove_hook __P((int (*func) __P((void *, int, + struct ifnet *, int, struct mbuf **)), int, struct pfil_head *)); + +/* XXX */ +#if defined(_KERNEL) && !defined(_LKM) +#include "ipfilter.h" +#endif + +#if NIPFILTER > 0 +#ifdef PFIL_HOOKS +#undef PFIL_HOOKS +#endif +#define PFIL_HOOKS +#endif /* NIPFILTER */ + +#endif /* _NET_PFIL_H_ */ |