39191c8eb8
is administratively downed, all routes to that interface (including the interface route itself) which are not static will be deleted. When it comes back up, and addresses remaining will have their interface routes re-added. This solves the problem where, for example, an Ethernet interface is downed by traffic continues to flow by way of ARP entries.
208 lines
5.8 KiB
C
208 lines
5.8 KiB
C
/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in_proto.c 8.2 (Berkeley) 2/9/95
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <net/radix.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/in_pcb.h>
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#include <netinet/igmp_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_seq.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcpip.h>
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#ifdef TCPDEBUG
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#include <netinet/tcp_debug.h>
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#endif
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#include <netinet/udp.h>
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#include <netinet/udp_var.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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#ifdef IPXIP
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#include <netipx/ipx.h>
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#include <netipx/ipx_ip.h>
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#endif
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#ifdef NSIP
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#ifdef TPIP
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void tpip_input(), tpip_ctlinput(), tp_init(), tp_slowtimo(), tp_drain();
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int tp_ctloutput(), tp_usrreq();
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#endif
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#ifdef EON
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void eoninput(), eonctlinput(), eonprotoinit();
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#endif /* EON */
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#ifdef IPFILTER
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void iplinit();
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#define ip_init iplinit
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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, 0, 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
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},
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{ SOCK_STREAM, &inetdomain, IPPROTO_TCP,
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PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
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tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
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0,
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tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain,
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&tcp_usrreqs
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
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rip_input, 0, rip_ctlinput, rip_ctloutput,
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rip_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, 0, 0, rip_ctloutput,
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rip_usrreq
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR,
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igmp_input, 0, 0, rip_ctloutput,
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rip_usrreq,
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igmp_init, igmp_fasttimo, igmp_slowtimo
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR,
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rsvp_input, 0, 0, rip_ctloutput,
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rip_usrreq,
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0, 0, 0, 0,
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},
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{ SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR,
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ipip_input, 0, 0, rip_ctloutput,
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rip_usrreq,
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0, 0, 0, 0,
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},
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#ifdef IPDIVERT
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{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
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div_input, 0, 0, ip_ctloutput,
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div_usrreq,
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div_init, 0, 0, 0,
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},
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#endif
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#ifdef TPIP
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{ SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD,
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tpip_input, 0, tpip_ctlinput, tp_ctloutput,
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tp_usrreq,
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tp_init, 0, tp_slowtimo, tp_drain,
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},
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#endif
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/* EON (ISO CLNL over IP) */
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#ifdef EON
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{ SOCK_RAW, &inetdomain, IPPROTO_EON, 0,
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eoninput, 0, eonctlinput, 0,
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0,
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eonprotoinit, 0, 0, 0,
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},
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#endif
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#ifdef IPXIP
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{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR,
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ipxip_input, 0, ipxip_ctlinput, 0,
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rip_usrreq,
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0, 0, 0, 0,
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},
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#endif
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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, 0, nsip_ctlinput, 0,
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rip_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, 0, 0, rip_ctloutput,
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rip_usrreq,
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rip_init, 0, 0, 0,
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},
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};
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extern int in_inithead(void **, int);
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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])], 0,
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in_inithead, 32, sizeof(struct sockaddr_in)
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};
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DOMAIN_SET(inet);
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SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
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"Internet Family");
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SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
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SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
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SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
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SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
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SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
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#ifdef IPDIVERT
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SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT");
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#endif
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