151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and that due credit is given
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* to the University of California at Berkeley. The name of the University
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission. This software
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* is provided ``as is'' without express or implied warranty.
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*
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* @(#)in_proto.c 1.1 94/10/31 SMI; from UCB 7.2 12/7/87
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/tcp_timer.h>
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/*
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* TCP/IP protocol family: IP, ICMP, UDP, TCP.
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*/
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int ip_output(),ip_ctloutput();
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int ip_init(),ip_slowtimo(),ip_drain();
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int icmp_input();
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int udp_input(),udp_ctlinput();
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int udp_usrreq();
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int udp_init();
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int tcp_input(),tcp_ctlinput();
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int tcp_usrreq(),tcp_ctloutput();
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int tcp_init(),tcp_fasttimo(),tcp_slowtimo(),tcp_drain();
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int rip_input(),rip_output(),rip_ctloutput();
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extern int raw_usrreq();
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#ifdef NSIP
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int idpip_input(), nsip_ctlinput();
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#endif
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extern struct domain inetdomain;
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struct protosw inetsw[] = {
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{ 0, &inetdomain, 0, 0,
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0, ip_output, 0, 0,
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0,
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ip_init, 0, ip_slowtimo, ip_drain,
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},
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{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
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udp_input, 0, udp_ctlinput, ip_ctloutput,
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udp_usrreq,
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udp_init, 0, 0, 0,
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},
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{ SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD,
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tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
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tcp_usrreq,
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tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain,
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
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rip_input, rip_output, 0, rip_ctloutput,
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raw_usrreq,
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0, 0, 0, 0,
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR,
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icmp_input, rip_output, 0, rip_ctloutput,
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raw_usrreq,
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0, 0, 0, 0,
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},
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#ifdef NSIP
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{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR,
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idpip_input, rip_output, nsip_ctlinput, 0,
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raw_usrreq,
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0, 0, 0, 0,
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},
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#endif
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/* raw wildcard */
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{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
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rip_input, rip_output, 0, rip_ctloutput,
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raw_usrreq,
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0, 0, 0, 0,
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},
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};
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struct domain inetdomain =
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{ AF_INET, "internet", 0, 0, 0,
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inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])] };
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/*
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* ip_forwarding controls whether or not to forward packets:
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* ip_forwarding == -1 -- never forward; never change this value.
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* ip_forwarding == 0 -- don't forward; set this value to 1 when two
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* interfaces are up.
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* ip_forwarding == 1 -- always forward.
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*/
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#ifndef IPFORWARDING
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#define IPFORWARDING 0
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#endif
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int ip_forwarding = IPFORWARDING;
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#ifndef SUBNETSARELOCAL
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#define SUBNETSARELOCAL 1
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#endif
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int ip_subnetslocal = SUBNETSARELOCAL;
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#ifndef IPSENDREDIRECTS
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#define IPSENDREDIRECTS 1
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#endif
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int ip_sendredirects = IPSENDREDIRECTS;
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#ifndef DIRECTED_BROADCAST
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#define DIRECTED_BROADCAST 1
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#endif
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int ip_dirbroadcast = DIRECTED_BROADCAST; /* "letter-bombs" */
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int ip_printfs = 0; /* enable debug printouts */
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/*
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* Default TCP Maximum Segment Size - 512 to be conservative,
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* Higher for high-performance routers
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*/
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int tcp_default_mss = 512;
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/*
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* Default TCP buffer sizes (in bytes)
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*/
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int tcp_sendspace = 1024*4;
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int tcp_recvspace = 1024*4;
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/*
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* size of "keep alive" probes.
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*/
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int tcp_keeplen = 1; /* must be nonzero for 4.2 compat- XXX */
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int tcp_ttl = TCP_TTL; /* default time to live for TCPs */
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int tcp_nodelack = 0; /* turn off delayed acknowledgements */
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int tcp_keepidle = TCPTV_KEEP_IDLE; /* for Keep-alives */
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int tcp_keepintvl = TCPTV_KEEPINTVL;
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int udp_cksum = 0; /* turn on to check & generate udp checksums */
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int udp_ttl = 60; /* default time to live for UDPs */
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/*
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* Default UDP buffer sizes (in bytes)
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*/
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int udp_sendspace = 9000; /* really max datagram size */
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int udp_recvspace = 2*(9000+sizeof(struct sockaddr)); /* 2 8K dgrams */
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