diff options
Diffstat (limited to 'newlib/libc/sys/linux/include/net/pfil.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/net/pfil.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/include/net/pfil.h b/newlib/libc/sys/linux/include/net/pfil.h new file mode 100644 index 000000000..48ed4b779 --- /dev/null +++ b/newlib/libc/sys/linux/include/net/pfil.h @@ -0,0 +1,80 @@ +/* $FreeBSD: src/sys/net/pfil.h,v 1.9 2002/03/24 09:34:04 bde Exp $ */ + +/* + * 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)(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; +}; + +struct packet_filter_hook *pfil_hook_get(int, struct pfil_head *); +int pfil_add_hook(int (*func)(void *, int, + struct ifnet *, int, struct mbuf **), int, struct pfil_head *); +int pfil_remove_hook(int (*func)(void *, int, + struct ifnet *, int, struct mbuf **), int, struct pfil_head *); + +/* XXX */ +#if defined(_KERNEL) && !defined(KLD_MODULE) +#include "opt_ipfilter.h" +#endif + +#if IPFILTER > 0 +#ifdef PFIL_HOOKS +#undef PFIL_HOOKS +#endif +#define PFIL_HOOKS +#endif /* IPFILTER */ + +#endif /* _NET_PFIL_H_ */ |