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/* $OpenBSD: pfvar.h,v 1.1 2001/06/24 19:48:58 kjell 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
* REGENTS 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 _NETINET_PACKETFILTER_H_
#define _NETINET_PACKETFILTER_H_
#include <sys/types.h>
enum { PF_IN=0, PF_OUT=1 };
enum { PF_PASS=0, PF_DROP=1, PF_DROP_RST=2 };
struct rule {
u_int8_t action;
u_int8_t direction;
u_int8_t log;
u_int8_t quick;
u_int8_t keep_state;
char ifname[16];
struct ifnet *ifp;
u_int8_t proto;
struct {
u_int8_t not;
u_int32_t addr,
mask;
u_int8_t port_op;
u_int16_t port[2];
} src,
dst;
u_int8_t type,
code;
u_int8_t flags,
flagset;
struct rule *next;
};
struct state {
u_int8_t proto;
u_int8_t direction;
struct host {
u_int32_t addr;
u_int16_t port;
} lan,
gwy,
ext;
struct peer {
u_int32_t seqlo,
seqhi;
u_int8_t state;
} src,
dst;
u_int32_t creation,
expire;
u_int32_t packets,
bytes;
struct state *next;
};
struct nat {
char ifname[16];
struct ifnet *ifp;
u_int8_t proto;
u_int8_t not;
u_int32_t saddr,
smask,
daddr;
struct nat *next;
};
struct rdr {
char ifname[16];
struct ifnet *ifp;
u_int8_t proto;
u_int8_t not;
u_int32_t daddr,
dmask,
raddr;
u_int16_t dport,
rport;
struct rdr *next;
};
struct status {
u_int8_t running;
u_int32_t bytes[2];
u_int32_t packets[2][2];
u_int32_t states,
state_inserts,
state_removals,
state_searches;
u_int32_t since;
};
/*
* ioctl parameter structure
*/
struct ioctlbuffer {
u_int32_t size;
u_int16_t entries;
void *buffer;
};
/*
* ioctl operations
*/
#define DIOCSTART _IO ('D', 1)
#define DIOCSTOP _IO ('D', 2)
#define DIOCSETRULES _IOWR('D', 3, struct ioctlbuffer)
#define DIOCGETRULES _IOWR('D', 4, struct ioctlbuffer)
#define DIOCSETNAT _IOWR('D', 5, struct ioctlbuffer)
#define DIOCGETNAT _IOWR('D', 6, struct ioctlbuffer)
#define DIOCSETRDR _IOWR('D', 7, struct ioctlbuffer)
#define DIOCGETRDR _IOWR('D', 8, struct ioctlbuffer)
#define DIOCCLRSTATES _IO ('D', 9)
#define DIOCGETSTATES _IOWR('D', 10, struct ioctlbuffer)
#define DIOCSETSTATUSIF _IOWR('D', 11, struct ioctlbuffer)
#define DIOCGETSTATUS _IOWR('D', 12, struct ioctlbuffer)
/*
* ioctl errors
*/
enum error_msg {
NO_ERROR=0,
ERROR_INVALID_OP=100,
ERROR_ALREADY_RUNNING,
ERROR_NOT_RUNNING,
ERROR_INVALID_PARAMETERS,
ERROR_MALLOC,
MAX_ERROR_NUM
};
#ifdef _KERNEL
int pf_test (int, struct ifnet *, struct mbuf **);
#endif /* _KERNEL */
#endif /* _NET_PACKETFILTER_H_ */
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