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  * $FreeBSD$
   35  */
   36 
   37 #include "opt_ipdivert.h"
   38 #include "opt_ipx.h"
   39 #include "opt_mrouting.h"
   40 #include "opt_ipsec.h"
   41 #include "opt_inet6.h"
   42 
   43 #include <sys/param.h>
   44 #include <sys/kernel.h>
   45 #include <sys/socket.h>
   46 #include <sys/domain.h>
   47 #include <sys/protosw.h>
   48 #include <sys/queue.h>
   49 #include <sys/sysctl.h>
   50 
   51 #include <net/if.h>
   52 #include <net/route.h>
   53 
   54 #include <netinet/in.h>
   55 #include <netinet/in_systm.h>
   56 #include <netinet/ip.h>
   57 #include <netinet/ip_var.h>
   58 #include <netinet/ip_icmp.h>
   59 #include <netinet/igmp_var.h>
   60 #ifdef PIM
   61 #include <netinet/pim_var.h>
   62 #endif
   63 #include <netinet/tcp.h>
   64 #include <netinet/tcp_timer.h>
   65 #include <netinet/tcp_var.h>
   66 #include <netinet/udp.h>
   67 #include <netinet/udp_var.h>
   68 #include <netinet/ip_encap.h>
   69 
   70 #include <netinet/ipprotosw.h>
   71 
   72 /*
   73  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   74  */
   75 
   76 #ifdef IPSEC
   77 #include <netinet6/ipsec.h>
   78 #include <netinet6/ah.h>
   79 #ifdef IPSEC_ESP
   80 #include <netinet6/esp.h>
   81 #endif
   82 #include <netinet6/ipcomp.h>
   83 #endif /* IPSEC */
   84 
   85 #ifdef FAST_IPSEC
   86 #include <netipsec/ipsec.h>
   87 #endif /* FAST_IPSEC */
   88 
   89 #ifdef IPXIP
   90 #include <netipx/ipx_ip.h>
   91 #endif
   92 
   93 #ifdef NSIP
   94 #include <netns/ns.h>
   95 #include <netns/ns_if.h>
   96 #endif
   97 
   98 extern  struct domain inetdomain;
   99 static  struct pr_usrreqs nousrreqs;
  100 
  101 struct ipprotosw inetsw[] = {
  102 { 0,            &inetdomain,    0,              0,
  103   0,            0,              0,              0,
  104   0,
  105   ip_init,      0,              ip_slowtimo,    ip_drain,
  106   &nousrreqs
  107 },
  108 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  109   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
  110   0,
  111   udp_init,     0,              0,              0,
  112   &udp_usrreqs
  113 },
  114 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
  115         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  116   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
  117   0,
  118   tcp_init,     0,              tcp_slowtimo,   tcp_drain,
  119   &tcp_usrreqs
  120 },
  121 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  122   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
  123   0,
  124   0,            0,              0,              0,
  125   &rip_usrreqs
  126 },
  127 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  128   icmp_input,   0,              0,              rip_ctloutput,
  129   0,
  130   0,            0,              0,              0,
  131   &rip_usrreqs
  132 },
  133 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  134   igmp_input,   0,              0,              rip_ctloutput,
  135   0,
  136   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
  137   &rip_usrreqs
  138 },
  139 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  140   rsvp_input,   0,              0,              rip_ctloutput,
  141   0,
  142   0,            0,              0,              0,
  143   &rip_usrreqs
  144 },
  145 #ifdef IPSEC
  146 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  147   ah4_input,    0,              0,              0,
  148   0,      
  149   0,            0,              0,              0,
  150   &nousrreqs
  151 },
  152 #ifdef IPSEC_ESP
  153 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  154   esp4_input,   0,              0,              0,
  155   0,      
  156   0,            0,              0,              0,
  157   &nousrreqs
  158 },
  159 #endif
  160 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  161   ipcomp4_input, 0,             0,              0,
  162   0,      
  163   0,            0,              0,              0,
  164   &nousrreqs
  165 },
  166 #endif /* IPSEC */
  167 #ifdef FAST_IPSEC
  168 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  169   ipsec4_common_input,  0,      0,              0,
  170   0,      
  171   0,            0,              0,              0,
  172   &nousrreqs
  173 },
  174 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  175   ipsec4_common_input,  0,      0,              0,
  176   0,      
  177   0,            0,              0,              0,
  178   &nousrreqs
  179 },
  180 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  181   ipsec4_common_input,  0,      0,              0,
  182   0,      
  183   0,            0,              0,              0,
  184   &nousrreqs
  185 },
  186 #endif /* FAST_IPSEC */
  187 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   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_MOBILE, 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 { SOCK_RAW,     &inetdomain,    IPPROTO_GRE,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  200   encap4_input, 0,              0,              rip_ctloutput,
  201   0,
  202   encap_init,   0,              0,              0,
  203   &rip_usrreqs
  204 },
  205 # ifdef INET6
  206 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  207   encap4_input, 0,              0,              rip_ctloutput,
  208   0,
  209   encap_init,   0,              0,              0,
  210   &rip_usrreqs
  211 },
  212 #endif
  213 #ifdef IPDIVERT
  214 { SOCK_RAW,     &inetdomain,    IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
  215   div_input,    0,              0,              ip_ctloutput,
  216   0,
  217   div_init,     0,              0,              0,
  218   &div_usrreqs,
  219 },
  220 #endif
  221 #ifdef IPXIP
  222 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  223   ipxip_input,  0,              ipxip_ctlinput, 0,
  224   0,
  225   0,            0,              0,              0,
  226   &rip_usrreqs
  227 },
  228 #endif
  229 #ifdef NSIP
  230 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  231   idpip_input,  0,              nsip_ctlinput,  0,
  232   0,
  233   0,            0,              0,              0,
  234   &rip_usrreqs
  235 },
  236 #endif
  237 #ifdef PIM
  238 { SOCK_RAW,     &inetdomain,    IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  239   pim_input,    0,              0,              rip_ctloutput,
  240   0,
  241   0,            0,              0,              0,
  242   &rip_usrreqs
  243 },
  244 #endif
  245         /* raw wildcard */
  246 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
  247   rip_input,    0,              0,              rip_ctloutput,
  248   0,
  249   rip_init,     0,              0,              0,
  250   &rip_usrreqs
  251 },
  252 };
  253 
  254 extern int in_inithead __P((void **, int));
  255 
  256 struct domain inetdomain =
  257     { AF_INET, "internet", 0, 0, 0, 
  258       (struct protosw *)inetsw,
  259       (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
  260       in_inithead, 32, sizeof(struct sockaddr_in)
  261     };
  262 
  263 DOMAIN_SET(inet);
  264 
  265 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  266         "Internet Family");
  267 
  268 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  269 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  270 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  271 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  272 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  273 #ifdef FAST_IPSEC
  274 /* XXX no protocol # to use, pick something "reserved" */
  275 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  276 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  277 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  278 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  279 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  280 #else
  281 #ifdef IPSEC
  282 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  283 #endif /* IPSEC */
  284 #endif /* !FAST_IPSEC */
  285 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  286 #ifdef IPDIVERT
  287 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  divert, CTLFLAG_RW, 0,  "DIVERT");
  288 #endif
  289 #ifdef PIM
  290 SYSCTL_NODE(_net_inet, IPPROTO_PIM,    pim,    CTLFLAG_RW, 0,  "PIM");
  291 #endif
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FreeBSD/Linux Kernel Cross Reference sys/netinet/in_proto.c

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