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      1 /*	$NetBSD: ipsecif.h,v 1.3 2019/11/01 04:28:14 knakahara Exp $  */
      2 
      3 /*
      4  * Copyright (c) 2017 Internet Initiative Japan Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _NETIPSEC_IPSECIF_H_
     30 #define _NETIPSEC_IPSECIF_H_
     31 
     32 #include <net/if_ipsec.h>
     33 
     34 #define IPSEC_TTL	64
     35 #define IPSEC_HLIM	64
     36 
     37 #ifdef _KERNEL
     38 #ifdef INET6
     39 extern int ip6_ipsec_hlim;
     40 extern int ip6_ipsec_pmtu;
     41 
     42 #define IPSEC_PMTU_SYSDEFAULT	-1	/* Use system default value (ip6_gif_pmtu) */
     43 #define IPSEC_PMTU_MINMTU	0	/* Fragmented by IPV6_MINMTU */
     44 #define IPSEC_PMTU_OUTERMTU	1	/* Fragmented by Path MTU of outer path */
     45 #endif
     46 
     47 int ipsecif4_encap_func(struct mbuf *, struct ip *, struct ipsec_variant *);
     48 int ipsecif4_attach(struct ipsec_variant *);
     49 int ipsecif4_detach(struct ipsec_variant *);
     50 
     51 int ipsecif6_encap_func(struct mbuf *, struct ip6_hdr *, struct ipsec_variant *);
     52 int ipsecif6_attach(struct ipsec_variant *);
     53 int ipsecif6_detach(struct ipsec_variant *);
     54 void *ipsecif6_ctlinput(int, const struct sockaddr *, void *, void *);
     55 #endif
     56 
     57 #endif /*_NETIPSEC_IPSECIF_H_*/
     58