FreeBSD/Linux Kernel Cross Reference
sys/netinet/in_proto.c

     /*      $OpenBSD: in_proto.c,v 1.99 2022/08/15 09:11:38 mvs 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. 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.
     *
     *      @(#)COPYRIGHT   1.1 (NRL) 17 January 1995
     *
     * NRL grants permission for redistribution and use in source and binary
     * forms, with or without modification, of the software and documentation
     * created at NRL 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 acknowledgements:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     *      This product includes software developed at the Information
     *      Technology Division, US Naval Research Laboratory.
     * 4. Neither the name of the NRL nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THE SOFTWARE PROVIDED BY NRL IS PROVIDED BY NRL 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 NRL 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.
     *
     * The views and conclusions contained in the software and documentation
     * are those of the authors and should not be interpreted as representing
     * official policies, either expressed or implied, of the US Naval
     * Research Laboratory (NRL).
     */
    
   #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/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/ip_icmp.h>
   #include <netinet/in_pcb.h>
   
   #ifdef INET6
   #include <netinet/ip6.h>
   #endif
   
   #include <netinet/igmp_var.h>
   #include <netinet/tcp.h>
   #include <netinet/tcp_timer.h>
   #include <netinet/tcp_var.h>
   #include <netinet/udp.h>
   #include <netinet/udp_var.h>
   
   /*
    * TCP/IP protocol family: IP, ICMP, UDP, TCP.
    */
   
   #include "gif.h"
   #if NGIF > 0
   #include <net/if_gif.h>
   #endif
   
   #ifdef INET6
   #include <netinet6/ip6_var.h>
   #endif /* INET6 */
   
   #ifdef IPSEC
   #include <netinet/ip_ipsp.h>
   #endif
   
   #include <netinet/ip_ether.h>
   #include <netinet/ip_ipip.h>
   
   #include "gre.h"
   #if NGRE > 0
   #include <netinet/ip_gre.h>
   #include <net/if_gre.h>
   #endif
   
   #include "carp.h"
   #if NCARP > 0
   #include <netinet/ip_carp.h>
   #endif
   
   #include "pfsync.h"
   #if NPFSYNC > 0
   #include <net/pfvar.h>
   #include <net/if_pfsync.h>
   #endif
   
   #include "pf.h"
   #if NPF > 0
   #include <netinet/ip_divert.h>
   #endif
   
   #include "etherip.h"
   #if NETHERIP > 0
   #include <net/if_etherip.h>
   #endif
   
   u_char ip_protox[IPPROTO_MAX];
   
   const struct protosw inetsw[] = {
   {
     .pr_domain    = &inetdomain,
     .pr_init      = ip_init,
     .pr_slowtimo  = ip_slowtimo,
     .pr_sysctl    = ip_sysctl
   },
   {
     .pr_type      = SOCK_DGRAM,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_UDP,
     .pr_flags     = PR_ATOMIC|PR_ADDR|PR_SPLICE,
     .pr_input     = udp_input,
     .pr_ctlinput  = udp_ctlinput,
     .pr_ctloutput = ip_ctloutput,
     .pr_usrreqs   = &udp_usrreqs,
     .pr_init      = udp_init,
     .pr_sysctl    = udp_sysctl
   },
   {
     .pr_type      = SOCK_STREAM,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_TCP,
     .pr_flags     = PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS|PR_SPLICE,
     .pr_input     = tcp_input,
     .pr_ctlinput  = tcp_ctlinput,
     .pr_ctloutput = tcp_ctloutput,
     .pr_usrreqs   = &tcp_usrreqs,
     .pr_init      = tcp_init,
     .pr_slowtimo  = tcp_slowtimo,
     .pr_sysctl    = tcp_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_RAW,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = rip_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_ICMP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = icmp_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_init      = icmp_init,
     .pr_sysctl    = icmp_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_IPV4,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
   #if NGIF > 0
     .pr_input     = in_gif_input,
   #else
     .pr_input     = ipip_input,
   #endif
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = ipip_sysctl,
     .pr_init      = ipip_init
   },
   #ifdef INET6
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_IPV6,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
   #if NGIF > 0
     .pr_input     = in_gif_input,
   #else
     .pr_input     = ipip_input,
   #endif
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs, /* XXX */
   },
   #endif
   #if defined(MPLS) && NGIF > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_MPLS,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = in_gif_input,
     .pr_usrreqs   = &rip_usrreqs,
   },
   #endif /* MPLS && GIF */
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_IGMP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = igmp_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_init      = igmp_init,
     .pr_fasttimo  = igmp_fasttimo,
     .pr_slowtimo  = igmp_slowtimo,
     .pr_sysctl    = igmp_sysctl
   },
   #ifdef IPSEC
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_AH,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ah46_input,
     .pr_ctlinput  = ah4_ctlinput,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = ah_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_ESP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = esp46_input,
     .pr_ctlinput  = esp4_ctlinput,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = esp_sysctl
   },
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_IPCOMP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ipcomp46_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = ipcomp_sysctl
   },
   #endif /* IPSEC */
   #if NGRE > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_GRE,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = gre_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &gre_usrreqs,
     .pr_sysctl    = gre_sysctl
   },
   #endif /* NGRE > 0 */
   #if NCARP > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_CARP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = carp_proto_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = carp_sysctl
   },
   #endif /* NCARP > 0 */
   #if NPFSYNC > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_PFSYNC,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = pfsync_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = pfsync_sysctl
   },
   #endif /* NPFSYNC > 0 */
   #if NPF > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_DIVERT,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &divert_usrreqs,
     .pr_init      = divert_init,
     .pr_sysctl    = divert_sysctl
   },
   #endif /* NPF > 0 */
   #if NETHERIP > 0
   {
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_protocol  = IPPROTO_ETHERIP,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = ip_etherip_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_sysctl    = etherip_sysctl
   },
   #endif /* NETHERIP */
   {
     /* raw wildcard */
     .pr_type      = SOCK_RAW,
     .pr_domain    = &inetdomain,
     .pr_flags     = PR_ATOMIC|PR_ADDR,
     .pr_input     = rip_input,
     .pr_ctloutput = rip_ctloutput,
     .pr_usrreqs   = &rip_usrreqs,
     .pr_init      = rip_init
   }
   };
   
   const struct domain inetdomain = {
     .dom_family = AF_INET,
     .dom_name = "internet",
     .dom_init = in_init,
     .dom_protosw = inetsw,
     .dom_protoswNPROTOSW = &inetsw[nitems(inetsw)],
     .dom_sasize = sizeof(struct sockaddr_in),
     .dom_rtoffset = offsetof(struct sockaddr_in, sin_addr),
     .dom_maxplen = 32
   };

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