2.11BSD/sys/netinet/in_proto.c

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 *
 *	@(#)in_proto.c	7.2.1 (2.11BSD) 1995/10/09
 */

#include "param.h"
#include "socket.h"
#include "protosw.h"
#include "domain.h"
#include "mbuf.h"

#include "in.h"
#include "in_systm.h"
#include "ip.h"

/*
 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
 */
int	ip_output(),ip_ctloutput();
int	ip_init(),ip_slowtimo(),ip_drain(), ip_sysctl();
int	icmp_input(), icmp_sysctl();
int	udp_input(),udp_ctlinput(), udp_sysctl();
int	udp_usrreq();
int	udp_init();
int	tcp_input(),tcp_ctlinput();
int	tcp_usrreq(),tcp_ctloutput();
int	tcp_init(),tcp_fasttimo(),tcp_slowtimo(),tcp_drain();
int	rip_input(),rip_output(),rip_ctloutput();
extern	int raw_usrreq();
/*
 * IMP protocol family: raw interface.
 * Using the raw interface entry to get the timer routine
 * in is a kludge.
 */
#include "imp.h"
#if NIMP > 0
int	rimp_output(), hostslowtimo();
#endif

#ifdef NSIP
int	idpip_input(), nsip_ctlinput();
#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,
},
{ SOCK_RAW,	&inetdomain,	IPPROTO_RAW,	PR_ATOMIC|PR_ADDR,
  rip_input,	rip_output,	0,		rip_ctloutput,
  raw_usrreq,
  0,		0,		0,		0,
},
{ SOCK_RAW,	&inetdomain,	IPPROTO_ICMP,	PR_ATOMIC|PR_ADDR,
  icmp_input,	rip_output,	0,		rip_ctloutput,
  raw_usrreq,
  0,		0,		0,		0,		icmp_sysctl
},
#ifdef NSIP
{ SOCK_RAW,	&inetdomain,	IPPROTO_IDP,	PR_ATOMIC|PR_ADDR,
  idpip_input,	rip_output,	nsip_ctlinput,	0,
  raw_usrreq,
  0,		0,		0,		0,
},
#endif
	/* raw wildcard */
{ SOCK_RAW,	&inetdomain,	0,		PR_ATOMIC|PR_ADDR,
  rip_input,	rip_output,	0,		rip_ctloutput,
  raw_usrreq,
  0,		0,		0,		0,
},
};

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

#if NIMP > 0
extern	struct domain impdomain;

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

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

#ifndef	IPFORWARDING
#define	IPFORWARDING	1
#endif

#ifndef	IPSENDREDIRECTS
#define	IPSENDREDIRECTS	1
#endif

#ifndef	IPFORWARDSRCRT
#if	!defined(IPFORWARDING)
#define	IPFORWARDSRCRT	0
#else
#define	IPFORWARDSRCRT	1
#endif
#endif

int	ipforwarding = IPFORWARDING;
int	ipsendredirects = IPSENDREDIRECTS;
int	ipforward_srcrt = IPFORWARDSRCRT;
int	ip_defttl = IPDEFTTL;

#ifdef	GATEWAY
int	icmpmaskrepl = 1;
#else
int	icmpmaskrepl = 0;
#endif