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in_proto.c
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in_proto.c
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/* $NetBSD: in_proto.c,v 1.62 2003/12/04 19:38:24 atatat 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. 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: in_proto.c,v 1.62 2003/12/04 19:38:24 atatat Exp $");
#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/ipsec.h>
#include <netinet6/ah.h>
#ifdef IPSEC_ESP
#include <netinet6/esp.h>
#endif
#include <netinet6/ipcomp.h>
#endif /* IPSEC */
#ifdef FAST_IPSEC
#include <netipsec/ipsec.h>
#include <netipsec/key.h>
#endif /* FAST_IPSEC */
#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 "gre.h"
#if NGRE > 0
#include <netinet/ip_gre.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, NULL
},
{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
udp_input, 0, udp_ctlinput, ip_ctloutput,
udp_usrreq,
udp_init, 0, 0, 0, NULL
},
{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS,
tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
tcp_usrreq,
tcp_init, 0, tcp_slowtimo, tcp_drain, NULL
},
{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
rip_input, rip_output, rip_ctlinput, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
},
{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
icmp_input, rip_output, rip_ctlinput, rip_ctloutput,
rip_usrreq,
icmp_init, 0, 0, 0, NULL
},
#ifdef IPSEC
{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
ah4_input, 0, ah4_ctlinput, 0,
0,
0, 0, 0, 0, NULL
},
#ifdef IPSEC_ESP
{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
esp4_input,
0, esp4_ctlinput, 0,
0,
0, 0, 0, 0, NULL
},
#endif
{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
ipcomp4_input,
0, 0, 0,
0,
0, 0, 0, 0, NULL
},
#endif /* IPSEC */
#ifdef FAST_IPSEC
{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
ipsec4_common_input, 0, ah4_ctlinput, 0,
0,
0, 0, 0, 0, NULL
},
{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
ipsec4_common_input, 0, esp4_ctlinput, 0,
0,
0, 0, 0, 0, NULL
},
{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
ipsec4_common_input, 0, 0, 0,
0,
0, 0, 0, 0, NULL
},
#endif /* FAST_IPSEC */
{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
encap4_input, rip_output, rip_ctlinput, 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, rip_ctlinput, rip_ctloutput,
rip_usrreq, /*XXX*/
encap_init, 0, 0, 0,
},
#endif /* INET6 */
#if NGRE > 0
{ SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
gre_input, rip_output, rip_ctlinput, rip_ctloutput,
rip_usrreq,
0, 0, 0, 0,
},
{ SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
gre_mobile_input, rip_output, rip_ctlinput, 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, rip_ctlinput, 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|PR_ABRTACPTDIS,
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, rip_ctlinput, rip_ctloutput,
rip_usrreq, /*XXX*/
encap_init, 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|PR_LASTHDR,
rip_input, rip_output, rip_ctlinput, rip_ctloutput,
rip_usrreq,
rip_init, 0, 0, 0,
},
};
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 */