in_proto.c

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    1 /*
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      @(#)in_proto.c  8.2 (Berkeley) 2/9/95
   34  * $FreeBSD: releng/5.0/sys/netinet/in_proto.c 106680 2002-11-08 23:37:50Z sam $
   35  */
   36 
   37 #include "opt_ipdivert.h"
   38 #include "opt_ipx.h"
   39 #include "opt_ipsec.h"
   40 #include "opt_inet6.h"
   41 
   42 #include <sys/param.h>
   43 #include <sys/kernel.h>
   44 #include <sys/socket.h>
   45 #include <sys/domain.h>
   46 #include <sys/protosw.h>
   47 #include <sys/queue.h>
   48 #include <sys/sysctl.h>
   49 
   50 #include <net/if.h>
   51 #include <net/route.h>
   52 
   53 #include <netinet/in.h>
   54 #include <netinet/in_systm.h>
   55 #include <netinet/ip.h>
   56 #include <netinet/ip_var.h>
   57 #include <netinet/ip_icmp.h>
   58 #include <netinet/igmp_var.h>
   59 #include <netinet/tcp.h>
   60 #include <netinet/tcp_timer.h>
   61 #include <netinet/tcp_var.h>
   62 #include <netinet/udp.h>
   63 #include <netinet/udp_var.h>
   64 #include <netinet/ip_encap.h>
   65 
   66 /*
   67  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   68  */
   69 
   70 #ifdef IPSEC
   71 #include <netinet6/ipsec.h>
   72 #include <netinet6/ah.h>
   73 #ifdef IPSEC_ESP
   74 #include <netinet6/esp.h>
   75 #endif
   76 #include <netinet6/ipcomp.h>
   77 #endif /* IPSEC */
   78 
   79 #ifdef FAST_IPSEC
   80 #include <netipsec/ipsec.h>
   81 #endif /* FAST_IPSEC */
   82 
   83 #ifdef IPXIP
   84 #include <netipx/ipx_ip.h>
   85 #endif
   86 
   87 #ifdef NSIP
   88 #include <netns/ns.h>
   89 #include <netns/ns_if.h>
   90 #endif
   91 
   92 extern  struct domain inetdomain;
   93 static  struct pr_usrreqs nousrreqs;
   94 
   95 struct protosw inetsw[] = {
   96 { 0,            &inetdomain,    0,              0,
   97   0,            0,              0,              0,
   98   0,
   99   ip_init,      0,              ip_slowtimo,    ip_drain,
  100   &nousrreqs
  101 },
  102 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  103   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
  104   0,
  105   udp_init,     0,              0,              0,
  106   &udp_usrreqs
  107 },
  108 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
  109         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  110   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
  111   0,
  112   tcp_init,     0,              tcp_slowtimo,   tcp_drain,
  113   &tcp_usrreqs
  114 },
  115 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  116   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
  117   0,
  118   0,            0,              0,              0,
  119   &rip_usrreqs
  120 },
  121 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  122   icmp_input,   0,              0,              rip_ctloutput,
  123   0,
  124   0,            0,              0,              0,
  125   &rip_usrreqs
  126 },
  127 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  128   igmp_input,   0,              0,              rip_ctloutput,
  129   0,
  130   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
  131   &rip_usrreqs
  132 },
  133 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  134   rsvp_input,   0,              0,              rip_ctloutput,
  135   0,
  136   0,            0,              0,              0,
  137   &rip_usrreqs
  138 },
  139 #ifdef IPSEC
  140 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  141   ah4_input,    0,              0,              0,
  142   0,      
  143   0,            0,              0,              0,
  144   &nousrreqs
  145 },
  146 #ifdef IPSEC_ESP
  147 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  148   esp4_input,   0,              0,              0,
  149   0,      
  150   0,            0,              0,              0,
  151   &nousrreqs
  152 },
  153 #endif
  154 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  155   ipcomp4_input, 0,             0,              0,
  156   0,      
  157   0,            0,              0,              0,
  158   &nousrreqs
  159 },
  160 #endif /* IPSEC */
  161 #ifdef FAST_IPSEC
  162 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  163   ah4_input,    0,              0,              0,
  164   0,      
  165   0,            0,              0,              0,
  166   &nousrreqs
  167 },
  168 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  169   esp4_input,   0,              0,              0,
  170   0,      
  171   0,            0,              0,              0,
  172   &nousrreqs
  173 },
  174 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  175   ipcomp4_input,        0,              0,              0,
  176   0,      
  177   0,            0,              0,              0,
  178   &nousrreqs
  179 },
  180 #endif /* FAST_IPSEC */
  181 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  182   encap4_input, 0,              0,              rip_ctloutput,
  183   0,
  184   encap_init,           0,              0,              0,
  185   &rip_usrreqs
  186 },
  187 { SOCK_RAW,     &inetdomain,    IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  188   encap4_input, 0,              0,              rip_ctloutput,
  189   0,
  190   encap_init,   0,              0,              0,
  191   &rip_usrreqs
  192 },
  193 { SOCK_RAW,     &inetdomain,    IPPROTO_GRE,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  194   encap4_input, 0,              0,              rip_ctloutput,
  195   0,
  196   encap_init,   0,              0,              0,
  197   &rip_usrreqs
  198 },
  199 # ifdef INET6
  200 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  201   encap4_input, 0,              0,              rip_ctloutput,
  202   0,
  203   encap_init,   0,              0,              0,
  204   &rip_usrreqs
  205 },
  206 #endif
  207 #ifdef IPDIVERT
  208 { SOCK_RAW,     &inetdomain,    IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
  209   div_input,    0,              0,              ip_ctloutput,
  210   0,
  211   div_init,     0,              0,              0,
  212   &div_usrreqs,
  213 },
  214 #endif
  215 #ifdef IPXIP
  216 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  217   ipxip_input,  0,              ipxip_ctlinput, 0,
  218   0,
  219   0,            0,              0,              0,
  220   &rip_usrreqs
  221 },
  222 #endif
  223 #ifdef NSIP
  224 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  225   idpip_input,  0,              nsip_ctlinput,  0,
  226   0,
  227   0,            0,              0,              0,
  228   &rip_usrreqs
  229 },
  230 #endif
  231         /* raw wildcard */
  232 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
  233   rip_input,    0,              0,              rip_ctloutput,
  234   0,
  235   rip_init,     0,              0,              0,
  236   &rip_usrreqs
  237 },
  238 };
  239 
  240 extern int in_inithead(void **, int);
  241 
  242 struct domain inetdomain =
  243     { AF_INET, "internet", 0, 0, 0, 
  244       inetsw,
  245       &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
  246       in_inithead, 32, sizeof(struct sockaddr_in)
  247     };
  248 
  249 DOMAIN_SET(inet);
  250 
  251 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  252         "Internet Family");
  253 
  254 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  255 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  256 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  257 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  258 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  259 #ifdef FAST_IPSEC
  260 /* XXX no protocol # to use, pick something "reserved" */
  261 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  262 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  263 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  264 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  265 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  266 #else
  267 #ifdef IPSEC
  268 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  269 #endif /* IPSEC */
  270 #endif /* !FAST_IPSEC */
  271 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  272 #ifdef IPDIVERT
  273 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  divert, CTLFLAG_RW, 0,  "DIVERT");
  274 #endif
  275

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

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