//==========================================================================
//
//      sys/netinet/in_proto.c
//
//     
//
//==========================================================================
//####BSDCOPYRIGHTBEGIN####
//
// -------------------------------------------
//
// Portions of this software may have been derived from OpenBSD or other sources,
// and are covered by the appropriate copyright disclaimers included herein.
//
// -------------------------------------------
//
//####BSDCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    gthomas
// Contributors: gthomas
// Date:         2000-01-10
// Purpose:      
// Description:  
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================


/*	$OpenBSD: in_proto.c,v 1.17 1999/12/09 03:46:59 angelos Exp $	*/
/*	$NetBSD: in_proto.c,v 1.14 1996/02/18 18:58:32 christos 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	8.1 (Berkeley) 6/10/93
 */

/*
%%% portions-copyright-nrl-95
Portions of this software are Copyright 1995-1998 by Randall Atkinson,
Ronald Lee, Daniel McDonald, Bao Phan, and Chris Winters. All Rights
Reserved. All rights under this copyright have been assigned to the US
Naval Research Laboratory (NRL). The NRL Copyright Notice and License
Agreement Version 1.1 (January 17, 1995) applies to these portions of the
software.
You should have received a copy of the license with this software. If you
didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
*/

#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>
/*
 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
 */

#if 0 /*KAME IPSEC*/
#include <netinet6/ah.h>
#ifdef IPSEC_ESP
#include <netinet6/esp.h>
#endif
#include <netinet6/ipcomp.h>
#endif /* IPSEC */

#ifndef __ECOS
#include "gif.h"
#endif
#if NGIF > 0
#include <netinet/in_gif.h>
#endif

#ifdef NSIP
#include <netns/ns_var.h>
#include <netns/idp_var.h>
#endif /* NSIP */

#ifdef IPXIP
#include <netipx/ipx.h>
#include <netipx/ipx_ip.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 */

#ifdef MROUTING
#include <netinet/ip_mroute.h>
#endif /* MROUTING */

#ifdef IPFILTER
void	iplinit __P((void));
#define ip_init	iplinit
#endif

#ifdef INET6
#include <netinet6/ip6_var.h>
#endif /* INET6 */

#ifdef IPSEC
#include <netinet/ip_ipsp.h>
#include <netinet/ip_ah.h>
#include <netinet/ip_esp.h>
#include <netinet/ip_ip4.h>
#include <netinet/ip_ether.h>
#endif

#ifndef CYGPKG_NET_SYSCTL
#define ip_sysctl     0
#define udp_sysctl    0
#define tcp_sysctl    0
#define icmp_sysctl   0
#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,
  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,
  icmp_input,	rip_output,	0,		rip_ctloutput,
  rip_usrreq,
  0,		0,		0,		0,		icmp_sysctl
},
#if NGIF > 0 && !defined(IPSEC)
{ SOCK_RAW,	&inetdomain,	IPPROTO_IPV4,	PR_ATOMIC|PR_ADDR,
  in_gif_input,	0,	 	0,		0,
  0,	  
  0,		0,		0,		0,
},
#ifdef INET6
{ SOCK_RAW,	&inetdomain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR,
  in_gif_input,	0,	 	0,		0,
  0,	  
  0,		0,		0,		0,
},
#endif /* INET6 */
#else /* NGIF */
#if defined(IPSEC) || defined(MROUTING)
{ SOCK_RAW,	&inetdomain,	IPPROTO_IPIP,	PR_ATOMIC|PR_ADDR,
  ip4_input,	rip_output,	0,		rip_ctloutput,
  rip_usrreq,	/* XXX */
  0,		0,		0,		0,		ip4_sysctl
},
#if NGIF > 0 && defined(INET6)
{ SOCK_RAW,	&inetdomain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR,
  in_gif_input,	0,	 	0,		0,
  0,	  
  0,		0,		0,		0,
},
#endif /* NGIF && INET6 */
#endif /* MROUTING || IPSEC */
#endif /*NGIF*/
{ SOCK_RAW,	&inetdomain,	IPPROTO_IGMP,	PR_ATOMIC|PR_ADDR,
  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,
  tpip_input,	0,		tpip_ctlinput,	tp_ctloutput,
  tp_usrreq,
  tp_init,	0,		tp_slowtimo,	tp_drain,
},
#endif /* TPIP */
/* EON (ISO CLNL over IP) */
#ifdef EON
{ SOCK_RAW,	&inetdomain,	IPPROTO_EON,	0,
  eoninput,	0,		eonctlinput,		0,
  0,
  eonprotoinit,	0,		0,		0,
},
#endif /* EON */
#ifdef IPXIP
{ SOCK_RAW,	&inetdomain,	IPPROTO_IDP,	PR_ATOMIC|PR_ADDR,
  ipxip_input,	rip_output,	ipxip_ctlinput,	0,
  rip_usrreq,
  ipxipprotoinit,0,		0,		0,
},
#endif /* NSIP */
#ifdef NSIP
{ SOCK_RAW,	&inetdomain,	IPPROTO_IDP,	PR_ATOMIC|PR_ADDR,
  idpip_input,	rip_output,	nsip_ctlinput,	0,
  rip_usrreq,
  0,		0,		0,		0,
},
#endif /* NSIP */
#ifdef IPSEC
{ SOCK_RAW,   &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  ah_input,   rip_output,     0,              rip_ctloutput,
  rip_usrreq,
  0,          0,              0,              0,		ah_sysctl
},
{ SOCK_RAW,   &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  esp_input,  rip_output,     0,              rip_ctloutput,
  rip_usrreq,
  0,          0,              0,              0,		esp_sysctl
},
{ SOCK_RAW,   &inetdomain,    IPPROTO_ETHERIP, PR_ATOMIC|PR_ADDR,
  etherip_input,  rip_output, 0,              rip_ctloutput,
  rip_usrreq,
  0,          0,              0,              0,		etherip_sysctl
},
#endif
#if 0 /*NRL IPv6*/
/* IPv6 in IPv4 tunneled packets... */
{ SOCK_RAW,   &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR,
  ip6_input,  rip_output,     ipv6_trans_ctlinput, rip_ctloutput,
  rip_usrreq,
  0,          0,              0,              0
},
#if 0
/* IPv4 in IPv4 tunneled packets... */
{ SOCK_RAW,   &inetdomain,    IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR,
  ipv4_input, 0,              0,              0,
  0,
  0,          0,              0,              0
},
#endif /* 0 */
#endif /* defined(INET6) */
/* raw wildcard */
{ SOCK_RAW,	&inetdomain,	0,		PR_ATOMIC|PR_ADDR,
  rip_input,	rip_output,	0,		rip_ctloutput,
  rip_usrreq,
  rip_init,	0,		0,		0,
},
};

struct domain inetdomain =
    { AF_INET, "internet", 0, 0, 0, 
      inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
      rn_inithead, 32, sizeof(struct sockaddr_in) };

#ifdef notyet /* XXXX */
#include "imp.h"
#if NIMP > 0
extern	struct domain impdomain;
int	rimp_output(), hostslowtimo();

struct protosw impsw[] = {
{ SOCK_RAW,	&impdomain,	0,		PR_ATOMIC|PR_ADDR,
  0,		rimp_output,	0,		0,
  rip_usrreq,
  0,		0,		hostslowtimo,	0,
},
};

struct domain impdomain =
    { AF_IMPLINK, "imp", 0, 0, 0,
      impsw, &impsw[sizeof (impsw)/sizeof(impsw[0])] };
#endif

#include "hy.h"
#if NHY > 0
/*
 * HYPERchannel protocol family: raw interface.
 */
int	rhy_output();
extern	struct domain hydomain;

struct protosw hysw[] = {
{ SOCK_RAW,	&hydomain,	0,		PR_ATOMIC|PR_ADDR,
  0,		rhy_output,	0,		0,
  rip_usrreq,
  0,		0,		0,		0,
},
};

struct domain hydomain =
    { AF_HYLINK, "hy", 0, 0, 0, hysw, &hysw[sizeof (hysw)/sizeof(hysw[0])] };
#endif
#endif
