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/5.3/sys/netinet/in_proto.c 136588 2004-10-16 08:43:07Z cvs2svn $
   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 
   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/ip_divert.h>
   58 #include <netinet/igmp_var.h>
   59 #ifdef PIM
   60 #include <netinet/pim_var.h>
   61 #endif
   62 #include <netinet/tcp.h>
   63 #include <netinet/tcp_timer.h>
   64 #include <netinet/tcp_var.h>
   65 #include <netinet/udp.h>
   66 #include <netinet/udp_var.h>
   67 #include <netinet/ip_encap.h>
   68 
   69 /*
   70  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
   71  */
   72 
   73 #ifdef IPSEC
   74 #include <netinet6/ipsec.h>
   75 #include <netinet6/ah.h>
   76 #ifdef IPSEC_ESP
   77 #include <netinet6/esp.h>
   78 #endif
   79 #include <netinet6/ipcomp.h>
   80 #endif /* IPSEC */
   81 
   82 #ifdef FAST_IPSEC
   83 #include <netipsec/ipsec.h>
   84 #endif /* FAST_IPSEC */
   85 
   86 #ifdef IPXIP
   87 #include <netipx/ipx_ip.h>
   88 #endif
   89 
   90 #ifdef DEV_PFSYNC
   91 #include <net/pfvar.h>
   92 #include <net/if_pfsync.h>
   93 #endif
   94 
   95 extern  struct domain inetdomain;
   96 static  struct pr_usrreqs nousrreqs;
   97 
   98 struct protosw inetsw[] = {
   99 { 0,            &inetdomain,    0,              0,
  100   0,            0,              0,              0,
  101   0,
  102   ip_init,      0,              ip_slowtimo,    ip_drain,
  103   &nousrreqs
  104 },
  105 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
  106   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
  107   0,
  108   udp_init,     0,              0,              0,
  109   &udp_usrreqs
  110 },
  111 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
  112         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
  113   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
  114   0,
  115   tcp_init,     0,              tcp_slowtimo,   tcp_drain,
  116   &tcp_usrreqs
  117 },
  118 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
  119   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
  120   0,
  121   0,            0,              0,              0,
  122   &rip_usrreqs
  123 },
  124 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  125   icmp_input,   0,              0,              rip_ctloutput,
  126   0,
  127   0,            0,              0,              0,
  128   &rip_usrreqs
  129 },
  130 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  131   igmp_input,   0,              0,              rip_ctloutput,
  132   0,
  133   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
  134   &rip_usrreqs
  135 },
  136 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  137   rsvp_input,   0,              0,              rip_ctloutput,
  138   0,
  139   0,            0,              0,              0,
  140   &rip_usrreqs
  141 },
  142 #ifdef IPSEC
  143 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  144   ah4_input,    0,              0,              0,
  145   0,
  146   0,            0,              0,              0,
  147   &nousrreqs
  148 },
  149 #ifdef IPSEC_ESP
  150 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  151   esp4_input,   0,              0,              0,
  152   0,
  153   0,            0,              0,              0,
  154   &nousrreqs
  155 },
  156 #endif
  157 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  158   ipcomp4_input, 0,             0,              0,
  159   0,
  160   0,            0,              0,              0,
  161   &nousrreqs
  162 },
  163 #endif /* IPSEC */
  164 #ifdef FAST_IPSEC
  165 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
  166   ah4_input,    0,              ah4_ctlinput,   0,
  167   0,
  168   0,            0,              0,              0,
  169   &nousrreqs
  170 },
  171 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
  172   esp4_input,   0,              esp4_ctlinput,  0,
  173   0,
  174   0,            0,              0,              0,
  175   &nousrreqs
  176 },
  177 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
  178   ipcomp4_input,        0,              0,              0,
  179   0,
  180   0,            0,              0,              0,
  181   &nousrreqs
  182 },
  183 #endif /* FAST_IPSEC */
  184 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  185   encap4_input, 0,              0,              rip_ctloutput,
  186   0,
  187   encap_init,           0,              0,              0,
  188   &rip_usrreqs
  189 },
  190 { SOCK_RAW,     &inetdomain,    IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  191   encap4_input, 0,              0,              rip_ctloutput,
  192   0,
  193   encap_init,   0,              0,              0,
  194   &rip_usrreqs
  195 },
  196 { SOCK_RAW,     &inetdomain,    IPPROTO_GRE,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  197   encap4_input, 0,              0,              rip_ctloutput,
  198   0,
  199   encap_init,   0,              0,              0,
  200   &rip_usrreqs
  201 },
  202 # ifdef INET6
  203 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  204   encap4_input, 0,              0,              rip_ctloutput,
  205   0,
  206   encap_init,   0,              0,              0,
  207   &rip_usrreqs
  208 },
  209 #endif
  210 #ifdef IPDIVERT
  211 { SOCK_RAW,     &inetdomain,    IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
  212   div_input,    0,              div_ctlinput,   ip_ctloutput,
  213   0,
  214   div_init,     0,              0,              0,
  215   &div_usrreqs,
  216 },
  217 #endif
  218 #ifdef IPXIP
  219 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  220   ipxip_input,  0,              ipxip_ctlinput, 0,
  221   0,
  222   0,            0,              0,              0,
  223   &rip_usrreqs
  224 },
  225 #endif
  226 #ifdef PIM
  227 { SOCK_RAW,     &inetdomain,    IPPROTO_PIM,    PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  228   pim_input,    0,              0,              rip_ctloutput,
  229   0,
  230   0,            0,              0,              0,
  231   &rip_usrreqs
  232 },
  233 #endif  /* PIM */
  234 #ifdef DEV_PFSYNC
  235 { SOCK_RAW,     &inetdomain,    IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR,
  236   pfsync_input, 0,              0,              rip_ctloutput,
  237   0,
  238   0,            0,              0,              0,
  239   &rip_usrreqs
  240 },
  241 #endif  /* DEV_PFSYNC */
  242         /* raw wildcard */
  243 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
  244   rip_input,    0,              0,              rip_ctloutput,
  245   0,
  246   rip_init,     0,              0,              0,
  247   &rip_usrreqs
  248 },
  249 };
  250 
  251 extern int in_inithead(void **, int);
  252 
  253 struct domain inetdomain =
  254     { AF_INET, "internet", 0, 0, 0,
  255       inetsw,
  256       &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
  257       in_inithead, 32, sizeof(struct sockaddr_in)
  258     };
  259 
  260 DOMAIN_SET(inet);
  261 
  262 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
  263         "Internet Family");
  264 
  265 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
  266 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
  267 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
  268 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
  269 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
  270 #ifdef FAST_IPSEC
  271 /* XXX no protocol # to use, pick something "reserved" */
  272 SYSCTL_NODE(_net_inet, 253,             ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  273 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ah,     CTLFLAG_RW, 0,  "AH");
  274 SYSCTL_NODE(_net_inet, IPPROTO_ESP,     esp,    CTLFLAG_RW, 0,  "ESP");
  275 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP,  ipcomp, CTLFLAG_RW, 0,  "IPCOMP");
  276 SYSCTL_NODE(_net_inet, IPPROTO_IPIP,    ipip,   CTLFLAG_RW, 0,  "IPIP");
  277 #else
  278 #ifdef IPSEC
  279 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
  280 #endif /* IPSEC */
  281 #endif /* !FAST_IPSEC */
  282 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
  283 #ifdef IPDIVERT
  284 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  divert, CTLFLAG_RW, 0,  "DIVERT");
  285 #endif
  286 #ifdef PIM
  287 SYSCTL_NODE(_net_inet, IPPROTO_PIM,    pim,    CTLFLAG_RW, 0,  "PIM");
  288 #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
