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: releng/6.0/sys/netinet/in_proto.c 148345 2005-07-23 17:02:10Z mlaier $
   31  */
   32 
   33 #include "opt_ipx.h"
   34 #include "opt_mrouting.h"
   35 #include "opt_ipsec.h"
   36 #include "opt_inet6.h"
   37 #include "opt_pf.h"
   38 #include "opt_carp.h"
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/kernel.h>
   43 #include <sys/socket.h>
   44 #include <sys/domain.h>
   45 #include <sys/protosw.h>
   46 #include <sys/queue.h>
   47 #include <sys/sysctl.h>
   48 
   49 #include <net/if.h>
   50 #include <net/route.h>
   51 
   52 #include <netinet/in.h>
   53 #include <netinet/in_systm.h>
   54 #include <netinet/ip.h>
   55 #include <netinet/ip_var.h>
   56 #include <netinet/ip_icmp.h>
   57 #include <netinet/igmp_var.h>
   58 #ifdef PIM
   59 #include <netinet/pim_var.h>
   60 #endif
   61 #include <netinet/tcp.h>
   62 #include <netinet/tcp_timer.h>
   63 #include <netinet/tcp_var.h>
   64 #include <netinet/udp.h>
   65 #include <netinet/udp_var.h>
   66 #include <netinet/ip_encap.h>
   67 
   68 /*
   69  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   70  */
   71 
   72 #ifdef IPSEC
   73 #include <netinet6/ipsec.h>
   74 #include <netinet6/ah.h>
   75 #ifdef IPSEC_ESP
   76 #include <netinet6/esp.h>
   77 #endif
   78 #include <netinet6/ipcomp.h>
   79 #endif /* IPSEC */
   80 
   81 #ifdef FAST_IPSEC
   82 #include <netipsec/ipsec.h>
   83 #endif /* FAST_IPSEC */
   84 
   85 #ifdef IPXIP
   86 #include <netipx/ipx_ip.h>
   87 #endif
   88 
   89 #ifdef DEV_PFSYNC
   90 #include <net/pfvar.h>
   91 #include <net/if_pfsync.h>
   92 #endif
   93 
   94 #ifdef DEV_CARP
   95 #include <netinet/ip_carp.h>
   96 #endif
   97 
   98 extern  struct domain inetdomain;
   99 
  100 /* Spacer for loadable protocols. */
  101 #define IPPROTOSPACER   \
  102 { 0,            &inetdomain,    PROTO_SPACER,   0,      \
  103   NULL,         NULL,           NULL,           NULL,   \
  104   NULL,                                                 \
  105   NULL,         NULL,           NULL,           NULL,   \
  106   &nousrreqs                                            \
  107 }
  108 
  109 struct protosw inetsw[] = {
  110 { 0,            &inetdomain,    0,              0,
  111   0,            0,              0,              0,
  112   0,
  113   ip_init,      0,              ip_slowtimo,    ip_drain,
  114   &nousrreqs
  115 },
  116 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  117   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
  118   0,
  119   udp_init,     0,              0,              0,
  120   &udp_usrreqs
  121 },
  122 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
  123         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  124   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
  125   0,
  126   tcp_init,     0,              tcp_slowtimo,   tcp_drain,
  127   &tcp_usrreqs
  128 },
  129 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  130   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
  131   0,
  132   0,            0,              0,              0,
  133   &rip_usrreqs
  134 },
  135 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  136   icmp_input,   0,              0,              rip_ctloutput,
  137   0,
  138   0,            0,              0,              0,
  139   &rip_usrreqs
  140 },
  141 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  142   igmp_input,   0,              0,              rip_ctloutput,
  143   0,
  144   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
  145   &rip_usrreqs
  146 },
  147 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  148   rsvp_input,   0,              0,              rip_ctloutput,
  149   0,
  150   0,            0,              0,              0,
  151   &rip_usrreqs
  152 },
  153 #ifdef IPSEC
  154 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  155   ah4_input,    0,              0,              0,
  156   0,
  157   0,            0,              0,              0,
  158   &nousrreqs
  159 },
  160 #ifdef IPSEC_ESP
  161 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  162   esp4_input,   0,              0,              0,
  163   0,
  164   0,            0,              0,              0,
  165   &nousrreqs
  166 },
  167 #endif
  168 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  169   ipcomp4_input, 0,             0,              0,
  170   0,
  171   0,            0,              0,              0,
  172   &nousrreqs
  173 },
  174 #endif /* IPSEC */
  175 #ifdef FAST_IPSEC
  176 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  177   ah4_input,    0,              ah4_ctlinput,   0,
  178   0,
  179   0,            0,              0,              0,
  180   &nousrreqs
  181 },
  182 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  183   esp4_input,   0,              esp4_ctlinput,  0,
  184   0,
  185   0,            0,              0,              0,
  186   &nousrreqs
  187 },
  188 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  189   ipcomp4_input,        0,              0,              0,
  190   0,
  191   0,            0,              0,              0,
  192   &nousrreqs
  193 },
  194 #endif /* FAST_IPSEC */
  195 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   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_MOBILE, 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 { SOCK_RAW,     &inetdomain,    IPPROTO_GRE,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  208   encap4_input, 0,              0,              rip_ctloutput,
  209   0,
  210   encap_init,   0,              0,              0,
  211   &rip_usrreqs
  212 },
  213 # ifdef INET6
  214 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  215   encap4_input, 0,              0,              rip_ctloutput,
  216   0,
  217   encap_init,   0,              0,              0,
  218   &rip_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 PIM
  230 { SOCK_RAW,     &inetdomain,    IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  231   pim_input,    0,              0,              rip_ctloutput,
  232   0,
  233   0,            0,              0,              0,
  234   &rip_usrreqs
  235 },
  236 #endif  /* PIM */
  237 #ifdef DEV_PFSYNC
  238 { SOCK_RAW,     &inetdomain,    IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR,
  239   pfsync_input, 0,              0,              rip_ctloutput,
  240   0,
  241   0,            0,              0,              0,
  242   &rip_usrreqs
  243 },
  244 #endif  /* DEV_PFSYNC */
  245 #ifdef DEV_CARP
  246 { SOCK_RAW,     &inetdomain,    IPPROTO_CARP,   PR_ATOMIC|PR_ADDR,
  247   carp_input,   (pr_output_t*)rip_output,       0,      rip_ctloutput,
  248   0,
  249   0,            0,              0,              0,
  250   &rip_usrreqs
  251 },
  252 #endif /* DEV_CARP */
  253 /* Spacer n-times for loadable protocols. */
  254 IPPROTOSPACER,
  255 IPPROTOSPACER,
  256 IPPROTOSPACER,
  257 IPPROTOSPACER,
  258 IPPROTOSPACER,
  259 IPPROTOSPACER,
  260 IPPROTOSPACER,
  261 IPPROTOSPACER,
  262 /* raw wildcard */
  263 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
  264   rip_input,    0,              0,              rip_ctloutput,
  265   0,
  266   rip_init,     0,              0,              0,
  267   &rip_usrreqs
  268 },
  269 };
  270 
  271 extern int in_inithead(void **, int);
  272 
  273 struct domain inetdomain =
  274     { AF_INET, "internet", 0, 0, 0,
  275       inetsw,
  276       &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
  277       in_inithead, 32, sizeof(struct sockaddr_in)
  278     };
  279 
  280 DOMAIN_SET(inet);
  281 
  282 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  283         "Internet Family");
  284 
  285 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  286 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  287 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  288 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  289 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  290 #ifdef FAST_IPSEC
  291 /* XXX no protocol # to use, pick something "reserved" */
  292 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  293 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  294 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  295 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  296 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  297 #else
  298 #ifdef IPSEC
  299 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  300 #endif /* IPSEC */
  301 #endif /* !FAST_IPSEC */
  302 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  303 #ifdef PIM
  304 SYSCTL_NODE(_net_inet, IPPROTO_PIM,     pim,    CTLFLAG_RW, 0,  "PIM");
  305 #endif
  306 #ifdef DEV_PFSYNC
  307 SYSCTL_NODE(_net_inet, IPPROTO_PFSYNC,  pfsync, CTLFLAG_RW, 0,  "PFSYNC");
  308 #endif
  309 #ifdef DEV_CARP
  310 SYSCTL_NODE(_net_inet, IPPROTO_CARP,    carp,   CTLFLAG_RW, 0,  "CARP");
  311 #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
