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NetBSD/sys/netinet/in_proto.c
itojun 2d6047cff9 make sure to enforce inbound ipsec policy checking, for any protocols on top 
of ip (check it when final header is visited).  sync with kame.
XXX kame team will need to re-check policy engine code
2001-03-01 16:31:37 +00:00

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/* $NetBSD: in_proto.c,v 1.47 2001/03/01 16:31:38 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
*/
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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.
*
* @(#)in_proto.c 8.2 (Berkeley) 2/9/95
*/
#include "opt_mrouting.h"
#include "opt_eon.h" /* ISO CLNL over IP */
#include "opt_iso.h" /* ISO TP tunneled over IP */
#include "opt_ns.h" /* NSIP: XNS tunneled over IP */
#include "opt_inet.h"
#include "opt_ipsec.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <net/if.h>
#include <net/radix.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_icmp.h>
#include <netinet/in_pcb.h>
#ifdef INET6
#ifndef INET
#include <netinet/in.h>
#endif
#include <netinet/ip6.h>
#endif
#include <netinet/igmp_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_seq.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_debug.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/ip_encap.h>
/*
* TCP/IP protocol family: IP, ICMP, UDP, TCP.
*/
#ifdef IPSEC
#include <netinet6/ah.h>
#ifdef IPSEC_ESP
#include <netinet6/esp.h>
#endif
#include <netinet6/ipcomp.h>
#endif /* IPSEC */
#include "gif.h"
#if NGIF > 0
#include <netinet/in_gif.h>
#endif
#ifdef NSIP
#include <netns/ns_var.h>
#include <netns/idp_var.h>
#endif /* NSIP */
#ifdef TPIP
#include <netiso/tp_param.h>
#include <netiso/tp_var.h>
#endif /* TPIP */
#ifdef EON
#include <netiso/eonvar.h>
#endif /* EON */
#include "ipip.h"
#if NIPIP > 0 || defined(MROUTING)
#include <netinet/ip_ipip.h>
#endif /* NIPIP > 0 || MROUTING */
#include "gre.h"
#if NGRE > 0
#include <netinet/ip_gre.h>
#endif
#include "stf.h"
#if NSTF > 0
#include <net/if_stf.h>
#endif
extern struct domain inetdomain;
struct protosw inetsw[] = {
{ 0, &inetdomain, 0, 0,
0, ip_output, 0, 0,
0,
ip_init, 0, ip_slowtimo, ip_drain, ip_sysctl
},
{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
udp_input, 0, udp_ctlinput, ip_ctloutput,
udp_usrreq,
udp_init, 0, 0, 0, udp_sysctl
},
{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
tcp_usrreq,
tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, tcp_sysctl
},
{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
rip_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
},
{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
icmp_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0, icmp_sysctl
},
#ifdef IPSEC
{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
ah4_input, 0, ah4_ctlinput, 0,
0,
0, 0, 0, 0, ipsec_sysctl
},
#ifdef IPSEC_ESP
{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
esp4_input, 0, esp4_ctlinput, 0,
0,
0, 0, 0, 0, ipsec_sysctl
},
#endif
{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
ipcomp4_input, 0, 0, 0,
0,
0, 0, 0, 0, ipsec_sysctl
},
#endif /* IPSEC */
{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, rip_output, 0, rip_ctloutput,
rip_usrreq, /*XXX*/
encap_init, 0, 0, 0,
},
#ifdef INET6
{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, rip_output, 0, rip_ctloutput,
rip_usrreq, /*XXX*/
0, 0, 0, 0,
},
#endif /* INET6 */
#if NGRE > 0
{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
gre_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
},
{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
gre_mobile_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
},
#endif /* NGRE > 0 */
{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
igmp_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
},
#ifdef TPIP
{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_LASTHDR,
tpip_input, 0, tpip_ctlinput, tp_ctloutput,
tp_usrreq,
tp_init, 0, tp_slowtimo, tp_drain,
},
#endif /* TPIP */
#ifdef ISO
/* EON (ISO CLNL over IP) */
#ifdef EON
{ SOCK_RAW, &inetdomain, IPPROTO_EON, PR_LASTHDR,
eoninput, 0, eonctlinput, 0,
0,
eonprotoinit, 0, 0, 0,
},
#else
{ SOCK_RAW, &inetdomain, IPPROTO_EON, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, rip_output, 0, rip_ctloutput,
rip_usrreq, /*XXX*/
0, 0, 0, 0,
},
#endif /* EON */
#endif /* ISO */
#ifdef NSIP
{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
idpip_input, NULL, nsip_ctlinput, 0,
rip_usrreq,
0, 0, 0, 0,
},
#endif /* NSIP */
/* raw wildcard */
{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
rip_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
rip_init, 0, 0, 0,
},
};
#if NIPIP > 0
struct protosw ipip_protosw =
{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR,
ipip_input, rip_output, 0, rip_ctloutput,
rip_usrreq, /* XXX */
0, 0, 0, 0,
};
#endif /* NIPIP */
#if NGIF > 0
struct protosw in_gif_protosw =
{ SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
in_gif_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
};
#endif /*NGIF*/
#if NSTF > 0
struct protosw in_stf_protosw =
{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR,
in_stf_input, rip_output, 0, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0
};
#endif /*NSTF*/
struct domain inetdomain =
{ PF_INET, "internet", 0, 0, 0,
inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
rn_inithead, 32, sizeof(struct sockaddr_in) };
u_char ip_protox[IPPROTO_MAX];
int icmperrppslim = 100; /* 100pps */
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