FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6_proto.c

     /*      $OpenBSD: in6_proto.c,v 1.112 2022/11/23 14:48:28 kn Exp $      */
     /*      $KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun 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  8.1 (Berkeley) 6/10/93
     */
    
    #include <sys/param.h>
    #include <sys/socket.h>
    #include <sys/protosw.h>
    #include <sys/kernel.h>
    #include <sys/domain.h>
    #include <sys/mbuf.h>
    
    #include <net/if.h>
    #include <net/if_var.h>
    #include <net/route.h>
    #include <net/rtable.h>
    
    #include <netinet/in.h>
    #include <netinet/ip.h>
    #include <netinet/ip_var.h>
    #include <netinet/in_pcb.h>
    #include <netinet/ip6.h>
    #include <netinet6/ip6_var.h>
    #include <netinet/icmp6.h>
    
    #include <netinet/tcp.h>
    #include <netinet/tcp_timer.h>
    #include <netinet/tcp_var.h>
    #include <netinet/udp.h>
    #include <netinet/udp_var.h>
    #include <netinet/ip_ipsp.h>
    #include <netinet/ip_ah.h>
    #include <netinet/ip_esp.h>
    #include <netinet/ip_ipip.h>
    
    #include <netinet6/in6_var.h>
    #include <netinet6/nd6.h>
    
    #include "gif.h"
    #if NGIF > 0
    #include <net/if_gif.h>
   #endif
   
   #include "carp.h"
   #if NCARP > 0
   #include <netinet/ip_carp.h>
   #endif
   
   #include "pf.h"
   #if NPF > 0
   #include <netinet6/ip6_divert.h>
   #endif
   
   #include "etherip.h"
   #if NETHERIP > 0
   #include <net/if_etherip.h>
   #endif
   
   #include "gre.h"
   #if NGRE > 0
   #include <net/if_gre.h>
   #endif
   
   /*
    * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
    */
   u_char ip6_protox[IPPROTO_MAX];
   
   const struct protosw inet6sw[] = {
   {
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_IPV6,
     .pr_init      = ip6_init,
     .pr_slowtimo  = frag6_slowtimo,
     .pr_sysctl    = ip6_sysctl
   },
   {
     .pr_type      = SOCK_DGRAM,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_UDP,
     .pr_flags     = PR_ATOMIC|PR_ADDR|PR_SPLICE,
     .pr_input     = udp_input,
     .pr_ctlinput  = udp6_ctlinput,
     .pr_ctloutput = ip6_ctloutput,
     .pr_usrreqs   = &udp6_usrreqs,
     .pr_sysctl    = udp_sysctl
   },
   {
     .pr_type      = SOCK_STREAM,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_TCP,
     .pr_flags     = PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS|PR_SPLICE,
     .pr_input     = tcp_input,
     .pr_ctlinput  = tcp6_ctlinput,
     .pr_ctloutput = tcp_ctloutput,
     .pr_usrreqs   = &tcp6_usrreqs,
     .pr_sysctl    = tcp_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_RAW,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = rip6_input,
     .pr_ctlinput  = rip6_ctlinput,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_sysctl    = rip6_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_ICMPV6,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = icmp6_input,
     .pr_ctlinput  = rip6_ctlinput,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_init      = icmp6_init,
     .pr_fasttimo  = icmp6_fasttimo,
     .pr_sysctl    = icmp6_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_DSTOPTS,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = dest6_input
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_ROUTING,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = route6_input
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_FRAGMENT,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = frag6_input
   },
   #ifdef IPSEC
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_AH,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ah46_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_sysctl    = ah_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_ESP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = esp46_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_sysctl    = esp_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_IPCOMP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ipcomp46_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_sysctl    = ipcomp_sysctl
   },
   #endif /* IPSEC */
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_IPV4,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
   #if NGIF > 0
     .pr_input     = in6_gif_input,
   #else
     .pr_input     = ipip_input,
   #endif
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,        /* XXX */
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_IPV6,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
   #if NGIF > 0
     .pr_input     = in6_gif_input,
   #else
     .pr_input     = ipip_input,
   #endif
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,        /* XXX */
   },
   #if defined(MPLS) && NGIF > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_MPLS,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
   #if NGIF > 0
     .pr_input     = in6_gif_input,
   #else
     .pr_input     = ipip_input,
   #endif
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,        /* XXX */
   },
   #endif /* MPLS */
   #if NCARP > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_CARP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = carp6_proto_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_sysctl    = carp_sysctl
   },
   #endif /* NCARP */
   #if NPF > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_DIVERT,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &divert6_usrreqs,
     .pr_init      = divert6_init,
     .pr_sysctl    = divert6_sysctl
   },
   #endif /* NPF > 0 */
   #if NETHERIP > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_ETHERIP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ip6_etherip_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
   },
   #endif /* NETHERIP */
   #if NGRE > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_protocol  = IPPROTO_GRE,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = gre_input6,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
   },
   #endif /* NGRE */
   {
     /* raw wildcard */
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inet6domain,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = rip6_input,
     .pr_ctloutput = rip6_ctloutput,
     .pr_usrreqs   = &rip6_usrreqs,
     .pr_init      = rip6_init
   }
   };
   
   const struct domain inet6domain = {
     .dom_family = AF_INET6,
     .dom_name = "internet6",
     .dom_protosw = inet6sw,
     .dom_protoswNPROTOSW = &inet6sw[nitems(inet6sw)],
     .dom_sasize = sizeof(struct sockaddr_in6),
     .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr),
     .dom_maxplen = 128,
   };
   
   /*
    * Internet configuration info
    */
   int     ip6_forwarding = 0;     /* no forwarding unless sysctl'd to enable */
   int     ip6_mforwarding = 0;    /* no multicast forwarding unless ... */
   int     ip6_multipath = 0;      /* no using multipath routes unless ... */
   int     ip6_sendredirects = 1;
   int     ip6_defhlim = IPV6_DEFHLIM;
   int     ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
   int     ip6_maxfragpackets = 200;
   int     ip6_maxfrags = 200;
   int     ip6_log_interval = 5;
   int     ip6_hdrnestlimit = 10;  /* appropriate? */
   int     ip6_dad_count = 1;      /* DupAddrDetectionTransmits */
   int     ip6_dad_pending;        /* number of currently running DADs */
   int     ip6_auto_flowlabel = 1;
   int     ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
   int     ip6_mcast_pmtu = 0;     /* enable pMTU discovery for multicast? */
   int     ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */
   int     ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */
   time_t  ip6_log_time = (time_t)0L;
   
   /* raw IP6 parameters */
   /*
    * Nominal space allocated to a raw ip socket.
    */
   #define RIPV6SNDQ       8192
   #define RIPV6RCVQ       8192
   
   u_long  rip6_sendspace = RIPV6SNDQ;
   u_long  rip6_recvspace = RIPV6RCVQ;
   
   /* ICMPV6 parameters */
   int     icmp6_redirtimeout = 10 * 60;   /* 10 minutes */
   int     icmp6errppslim = 100;           /* 100pps */
   int     ip6_mtudisc_timeout = IPMTUDISCTIMEOUT;

Cache object: 36922335a5eecd221ed3e1096c6a5c63