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/* $OpenBSD: pfvar.h,v 1.29 2001/07/03 03:34:42 beck 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 _NET_PFVAR_H_
#define _NET_PFVAR_H_
#include <sys/types.h>
#include <sys/queue.h>
enum { PF_IN=0, PF_OUT=1 };
enum { PF_PASS=0, PF_DROP=1, PF_SCRUB=2 };
enum { PF_OP_GL=1, PF_OP_EQ=2, PF_OP_NE=3, PF_OP_LT=4,
PF_OP_LE=5, PF_OP_GT=6, PF_OP_GE=7 };
struct pf_rule_addr {
u_int32_t addr;
u_int32_t mask;
u_int16_t port[2];
u_int8_t not;
u_int8_t port_op;
};
struct pf_rule {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
struct pf_rule_addr src;
struct pf_rule_addr dst;
TAILQ_ENTRY(pf_rule) entries;
u_int16_t nr;
u_int16_t return_icmp;
u_int8_t action;
u_int8_t direction;
u_int8_t log;
u_int8_t quick;
u_int8_t keep_state;
u_int8_t proto;
u_int8_t type;
u_int8_t code;
u_int8_t flags;
u_int8_t flagset;
u_int8_t return_rst;
};
struct pf_state_host {
u_int32_t addr;
u_int16_t port;
};
struct pf_state_peer {
u_int32_t seqlo; /* Max sequence number sent */
u_int32_t seqhi; /* Max the other end ACKd + win */
u_int16_t max_win;
u_int8_t state;
};
struct pf_state {
TAILQ_ENTRY(pf_state) entries;
struct pf_state_host lan;
struct pf_state_host gwy;
struct pf_state_host ext;
struct pf_state_peer src;
struct pf_state_peer dst;
struct pf_rule *rule;
u_int32_t creation;
u_int32_t expire;
u_int32_t packets;
u_int32_t bytes;
u_int8_t proto;
u_int8_t direction;
u_int8_t log;
};
struct pf_natlook {
u_int32_t saddr;
u_int32_t daddr;
u_int32_t rsaddr;
u_int32_t rdaddr;
u_int16_t sport;
u_int16_t dport;
u_int16_t rsport;
u_int16_t rdport;
u_int8_t proto;
u_int8_t direction;
};
struct pf_nat {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
TAILQ_ENTRY(pf_nat) entries;
u_int32_t saddr;
u_int32_t smask;
u_int32_t daddr;
u_int8_t proto;
u_int8_t not;
};
struct pf_rdr {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
TAILQ_ENTRY(pf_rdr) entries;
u_int32_t daddr;
u_int32_t dmask;
u_int32_t raddr;
u_int16_t dport;
u_int16_t dport2;
u_int16_t rport;
u_int8_t proto;
u_int8_t not;
u_int8_t opts;
};
/* flags for RDR options */
#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
/* Reasons code for passing/dropping a packet */
#define PFRES_MATCH 0 /* Explicit match of a rule */
#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
#define PFRES_FRAG 2 /* Dropping following fragment */
#define PFRES_SHORT 3 /* Dropping short packet */
#define PFRES_NORM 4 /* Dropping by normalizer */
#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
#define PFRES_MAX 6 /* total+1 */
#define PFRES_NAMES { \
"match", \
"bad-offset", \
"fragment", \
"short", \
"normalize", \
"memory", \
NULL \
}
#define FCNT_STATE_SEARCH 0
#define FCNT_STATE_INSERT 1
#define FCNT_STATE_REMOVALS 2
#define FCNT_MAX 3
#define FCNT_NAMES { \
"state searches", \
"state inserts", \
"state removals", \
NULL \
}
struct pf_status {
quad_t counters[PFRES_MAX];
quad_t fcounters[FCNT_MAX];
quad_t pcounters[2][3];
quad_t bcounters[2];
u_int32_t running;
u_int32_t states;
u_int32_t since;
};
/*
* ioctl parameter structures
*/
struct pfioc_rule {
u_int32_t ticket;
u_int32_t nr;
struct pf_rule rule;
};
struct pfioc_nat {
u_int32_t ticket;
u_int32_t nr;
struct pf_nat nat;
};
struct pfioc_rdr {
u_int32_t ticket;
u_int32_t nr;
struct pf_rdr rdr;
};
struct pfioc_state {
u_int32_t nr;
struct pf_state state;
};
struct pfioc_if {
char ifname[IFNAMSIZ];
};
/*
* ioctl operations
*/
#define DIOCSTART _IO ('D', 1)
#define DIOCSTOP _IO ('D', 2)
#define DIOCBEGINRULES _IOWR('D', 3, u_int32_t)
#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
#define DIOCCOMMITRULES _IOWR('D', 5, u_int32_t)
#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
#define DIOCBEGINNATS _IOWR('D', 8, u_int32_t)
#define DIOCADDNAT _IOWR('D', 9, struct pfioc_nat)
#define DIOCCOMMITNATS _IOWR('D', 10, u_int32_t)
#define DIOCGETNATS _IOWR('D', 11, struct pfioc_nat)
#define DIOCGETNAT _IOWR('D', 12, struct pfioc_nat)
#define DIOCBEGINRDRS _IOWR('D', 13, u_int32_t)
#define DIOCADDRDR _IOWR('D', 14, struct pfioc_rdr)
#define DIOCCOMMITRDRS _IOWR('D', 15, u_int32_t)
#define DIOCGETRDRS _IOWR('D', 16, struct pfioc_rdr)
#define DIOCGETRDR _IOWR('D', 17, struct pfioc_rdr)
#define DIOCCLRSTATES _IO ('D', 18)
#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
#define DIOCCLRSTATUS _IO ('D', 22)
#define DIOCNATLOOK _IOWR('D', 23, struct pf_natlook)
#ifdef _KERNEL
int pf_test(int, struct ifnet *, struct mbuf **);
#endif /* _KERNEL */
#endif /* _NET_PFVAR_H_ */
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