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  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)in_proto.c  8.2 (Berkeley) 2/9/95
   30  * $FreeBSD$
   31  */
   32 
   33 #include "opt_ipdivert.h"
   34 #include "opt_ipx.h"
   35 #include "opt_mrouting.h"
   36 #include "opt_ipsec.h"
   37 #include "opt_inet6.h"
   38 #include "opt_pf.h"
   39 #include "opt_carp.h"
   40 
   41 #include <sys/param.h>
   42 #include <sys/systm.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/ip_divert.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 /*
   71  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   72  */
   73 
   74 #ifdef IPSEC
   75 #include <netinet6/ipsec.h>
   76 #include <netinet6/ah.h>
   77 #ifdef IPSEC_ESP
   78 #include <netinet6/esp.h>
   79 #endif
   80 #include <netinet6/ipcomp.h>
   81 #endif /* IPSEC */
   82 
   83 #ifdef FAST_IPSEC
   84 #include <netipsec/ipsec.h>
   85 #endif /* FAST_IPSEC */
   86 
   87 #ifdef IPXIP
   88 #include <netipx/ipx_ip.h>
   89 #endif
   90 
   91 #ifdef DEV_PFSYNC
   92 #include <net/pfvar.h>
   93 #include <net/if_pfsync.h>
   94 #endif
   95 
   96 #ifdef DEV_CARP
   97 #include <netinet/ip_carp.h>
   98 #endif
   99 
  100 extern  struct domain inetdomain;
  101 static  struct pr_usrreqs nousrreqs;
  102 
  103 struct protosw inetsw[] = {
  104 { 0,            &inetdomain,    0,              0,
  105   0,            0,              0,              0,
  106   0,
  107   ip_init,      0,              ip_slowtimo,    ip_drain,
  108   &nousrreqs
  109 },
  110 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  111   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
  112   0,
  113   udp_init,     0,              0,              0,
  114   &udp_usrreqs
  115 },
  116 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
  117         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  118   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
  119   0,
  120   tcp_init,     0,              tcp_slowtimo,   tcp_drain,
  121   &tcp_usrreqs
  122 },
  123 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  124   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
  125   0,
  126   0,            0,              0,              0,
  127   &rip_usrreqs
  128 },
  129 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  130   icmp_input,   0,              0,              rip_ctloutput,
  131   0,
  132   0,            0,              0,              0,
  133   &rip_usrreqs
  134 },
  135 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  136   igmp_input,   0,              0,              rip_ctloutput,
  137   0,
  138   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
  139   &rip_usrreqs
  140 },
  141 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  142   rsvp_input,   0,              0,              rip_ctloutput,
  143   0,
  144   0,            0,              0,              0,
  145   &rip_usrreqs
  146 },
  147 #ifdef IPSEC
  148 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  149   ah4_input,    0,              0,              0,
  150   0,
  151   0,            0,              0,              0,
  152   &nousrreqs
  153 },
  154 #ifdef IPSEC_ESP
  155 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  156   esp4_input,   0,              0,              0,
  157   0,
  158   0,            0,              0,              0,
  159   &nousrreqs
  160 },
  161 #endif
  162 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  163   ipcomp4_input, 0,             0,              0,
  164   0,
  165   0,            0,              0,              0,
  166   &nousrreqs
  167 },
  168 #endif /* IPSEC */
  169 #ifdef FAST_IPSEC
  170 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  171   ah4_input,    0,              ah4_ctlinput,   0,
  172   0,
  173   0,            0,              0,              0,
  174   &nousrreqs
  175 },
  176 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  177   esp4_input,   0,              esp4_ctlinput,  0,
  178   0,
  179   0,            0,              0,              0,
  180   &nousrreqs
  181 },
  182 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  183   ipcomp4_input,        0,              0,              0,
  184   0,
  185   0,            0,              0,              0,
  186   &nousrreqs
  187 },
  188 #endif /* FAST_IPSEC */
  189 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  190   encap4_input, 0,              0,              rip_ctloutput,
  191   0,
  192   encap_init,           0,              0,              0,
  193   &rip_usrreqs
  194 },
  195 { SOCK_RAW,     &inetdomain,    IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  196   encap4_input, 0,              0,              rip_ctloutput,
  197   0,
  198   encap_init,   0,              0,              0,
  199   &rip_usrreqs
  200 },
  201 { SOCK_RAW,     &inetdomain,    IPPROTO_GRE,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  202   encap4_input, 0,              0,              rip_ctloutput,
  203   0,
  204   encap_init,   0,              0,              0,
  205   &rip_usrreqs
  206 },
  207 # ifdef INET6
  208 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  209   encap4_input, 0,              0,              rip_ctloutput,
  210   0,
  211   encap_init,   0,              0,              0,
  212   &rip_usrreqs
  213 },
  214 #endif
  215 #ifdef IPDIVERT
  216 { SOCK_RAW,     &inetdomain,    IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
  217   div_input,    0,              div_ctlinput,   ip_ctloutput,
  218   0,
  219   div_init,     0,              0,              0,
  220   &div_usrreqs,
  221 },
  222 #endif
  223 #ifdef IPXIP
  224 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  225   ipxip_input,  0,              ipxip_ctlinput, 0,
  226   0,
  227   0,            0,              0,              0,
  228   &rip_usrreqs
  229 },
  230 #endif
  231 #ifdef PIM
  232 { SOCK_RAW,     &inetdomain,    IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  233   pim_input,    0,              0,              rip_ctloutput,
  234   0,
  235   0,            0,              0,              0,
  236   &rip_usrreqs
  237 },
  238 #endif  /* PIM */
  239 #ifdef DEV_PFSYNC
  240 { SOCK_RAW,     &inetdomain,    IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR,
  241   pfsync_input, 0,              0,              rip_ctloutput,
  242   0,
  243   0,            0,              0,              0,
  244   &rip_usrreqs
  245 },
  246 #endif  /* DEV_PFSYNC */
  247 #ifdef DEV_CARP
  248 { SOCK_RAW,     &inetdomain,    IPPROTO_CARP,   PR_ATOMIC|PR_ADDR,
  249   carp_input,   (pr_output_t*)rip_output,       0,      rip_ctloutput,
  250   0,
  251   0,            0,              0,              0,
  252   &rip_usrreqs
  253 },
  254 #endif /* DEV_CARP */
  255         /* raw wildcard */
  256 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
  257   rip_input,    0,              0,              rip_ctloutput,
  258   0,
  259   rip_init,     0,              0,              0,
  260   &rip_usrreqs
  261 },
  262 };
  263 
  264 extern int in_inithead(void **, int);
  265 
  266 struct domain inetdomain =
  267     { AF_INET, "internet", 0, 0, 0,
  268       inetsw,
  269       &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
  270       in_inithead, 32, sizeof(struct sockaddr_in)
  271     };
  272 
  273 DOMAIN_SET(inet);
  274 
  275 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  276         "Internet Family");
  277 
  278 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  279 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  280 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  281 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  282 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  283 #ifdef FAST_IPSEC
  284 /* XXX no protocol # to use, pick something "reserved" */
  285 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  286 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  287 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  288 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  289 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  290 #else
  291 #ifdef IPSEC
  292 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  293 #endif /* IPSEC */
  294 #endif /* !FAST_IPSEC */
  295 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  296 #ifdef IPDIVERT
  297 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  divert, CTLFLAG_RW, 0,  "DIVERT");
  298 #endif
  299 #ifdef PIM
  300 SYSCTL_NODE(_net_inet, IPPROTO_PIM,    pim,    CTLFLAG_RW, 0,  "PIM");
  301 #endif
  302 #ifdef DEV_CARP
  303 SYSCTL_NODE(_net_inet, IPPROTO_CARP,    carp,    CTLFLAG_RW, 0,  "CARP");
  304 #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
