bsd/netinet/in_proto.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)in_proto.c  8.2 (Berkeley) 2/9/95
  55  */
  56
  57 #if ISFB31
  58 #include "opt_ipdivert.h"
  59 #include "opt_ipx.h"
  60 #endif
  61
  62 #include <sys/param.h>
  63 #include <sys/kernel.h>
  64 #include <sys/socket.h>
  65 #include <sys/domain.h>
  66 #include <sys/protosw.h>
  67
  68
  69 #include <sys/sysctl.h>
  70
  71
  72 #include <net/if.h>
  73 #include <net/route.h>
  74
  75 #include <netinet/in.h>
  76 #include <netinet/in_systm.h>
  77 #include <netinet/ip.h>
  78 #include <netinet/ip_var.h>
  79 #include <netinet/ip6.h>
  80 #include <netinet6/ip6_var.h>
  81 #include <netinet/ip_icmp.h>
  82 #include <netinet/igmp_var.h>
  83 #include <netinet/tcp.h>
  84 #include <netinet/tcp_timer.h>
  85 #include <netinet/tcp_var.h>
  86 #include <netinet/tcpip.h>
  87 #include <netinet/udp.h>
  88 #include <netinet/udp_var.h>
  89 /*
  90  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
  91  */
  92
  93 #if IPSEC
  94 #include <netinet6/ipsec.h>
  95 #include <netinet6/ah.h>
  96 #if IPSEC_ESP
  97 #include <netinet6/esp.h>
  98 #endif
  99 #include <netinet6/ipcomp.h>
 100 #endif /* IPSEC */
 101
 102 #include "gif.h"
 103 #if NGIF > 0
 104 #include <netinet/in_gif.h>
 105 #endif
 106
 107 #if IPXIP
 108 #include <netipx/ipx_ip.h>
 109 #endif
 110
 111 #if NSIP
 112 #include <netns/ns.h>
 113 #include <netns/ns_if.h>
 114 #endif
 115
 116 #if PM
 117 void    pm_init         __P((void));
 118 void    pm_input        __P((struct mbuf *, int));
 119 int     pm_ctloutput    __P((int, struct socket *, int, int, struct mbuf **));
 120 struct pr_usrreqs pm_usrreqs;
 121 #endif
 122
 123 #if NATPT
 124 void    natpt_init      __P((void));
 125 int     natpt_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
 126 struct pr_usrreqs natpt_usrreqs;
 127 #endif
 128
 129 extern  struct domain inetdomain;
 130 static  struct pr_usrreqs nousrreqs;
 131
 132 struct protosw inetsw[] = {
 133 { 0,            &inetdomain,    0,              0,
 134   0,            0,              0,              0,
 135   0,
 136   ip_init,      0,              ip_slowtimo,    ip_drain,
 137   0,            &nousrreqs
 138 },
 139 { SOCK_DGRAM,   &inetdomain,    IPPROTO_UDP,    PR_ATOMIC|PR_ADDR,
 140   udp_input,    0,              udp_ctlinput,   ip_ctloutput,
 141   0,
 142   udp_init,     0,              0,              0,
 143   0, &udp_usrreqs
 144 },
 145 { SOCK_STREAM,  &inetdomain,    IPPROTO_TCP,
 146         PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
 147   tcp_input,    0,              tcp_ctlinput,   tcp_ctloutput,
 148   0,
 149   tcp_init,     tcp_fasttimo,   tcp_slowtimo,   tcp_drain,
 150   0, &tcp_usrreqs
 151 },
 152 { SOCK_RAW,     &inetdomain,    IPPROTO_RAW,    PR_ATOMIC|PR_ADDR,
 153   rip_input,    0,              rip_ctlinput,   rip_ctloutput,
 154   0,
 155   0,            0,              0,              0,
 156   0, &rip_usrreqs
 157 },
 158 { SOCK_RAW,     &inetdomain,    IPPROTO_ICMP,   PR_ATOMIC|PR_ADDR,
 159   icmp_input,   0,              0,              rip_ctloutput,
 160   0,
 161   0,            0,              0,              0,
 162   0, &rip_usrreqs
 163 },
 164 { SOCK_RAW,     &inetdomain,    IPPROTO_IGMP,   PR_ATOMIC|PR_ADDR,
 165   igmp_input,   0,              0,              rip_ctloutput,
 166   0,
 167   igmp_init,    igmp_fasttimo,  igmp_slowtimo,  0,
 168   0, &rip_usrreqs
 169 },
 170 { SOCK_RAW,     &inetdomain,    IPPROTO_RSVP,   PR_ATOMIC|PR_ADDR,
 171   rsvp_input,   0,              0,              rip_ctloutput,
 172   0,
 173   0,            0,              0,              0,
 174   0, &rip_usrreqs
 175 },
 176 #if IPSEC
 177 { SOCK_RAW,     &inetdomain,    IPPROTO_AH,     PR_ATOMIC|PR_ADDR,
 178   ah4_input,    0,              0,              0,
 179   0,
 180   0,            0,              0,              0,
 181   0, &nousrreqs
 182 },
 183 #if IPSEC_ESP
 184 { SOCK_RAW,     &inetdomain,    IPPROTO_ESP,    PR_ATOMIC|PR_ADDR,
 185   esp4_input,   0,              0,              0,
 186   0,
 187   0,            0,              0,              0,
 188   0, &nousrreqs
 189 },
 190 #endif
 191 { SOCK_RAW,     &inetdomain,    IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
 192   ipcomp4_input, 0,             0,              0,
 193   0,
 194   0,            0,              0,              0,
 195   0, &nousrreqs
 196 },
 197 #endif /* IPSEC */
 198 #if NGIF > 0
 199 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV4,   PR_ATOMIC|PR_ADDR,
 200   in_gif_input, 0,              0,              0,
 201   0,
 202   0,            0,              0,              0,
 203   0, &nousrreqs
 204 },
 205 # if INET6
 206 { SOCK_RAW,     &inetdomain,    IPPROTO_IPV6,   PR_ATOMIC|PR_ADDR,
 207   in_gif_input, 0,              0,              0,
 208   0,
 209   0,            0,              0,              0,
 210   0, &nousrreqs
 211 },
 212 #endif
 213 #else /*NGIF*/
 214 { SOCK_RAW,     &inetdomain,    IPPROTO_IPIP,   PR_ATOMIC|PR_ADDR,
 215   ipip_input,   0,              0,              rip_ctloutput,
 216   0,
 217   0,            0,              0,              0,
 218   0, &rip_usrreqs
 219 },
 220 #endif /*NGIF*/
 221 #if IPDIVERT
 222 { SOCK_RAW,     &inetdomain,    IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
 223   div_input,    0,              0,              ip_ctloutput,
 224   0,
 225   div_init,     0,              0,              0,
 226   0, &div_usrreqs,
 227 },
 228 #endif
 229 #if TPIP
 230 { SOCK_SEQPACKET,&inetdomain,   IPPROTO_TP,     PR_CONNREQUIRED|PR_WANTRCVD,
 231   tpip_input,   0,              tpip_ctlinput,  tp_ctloutput,
 232   0, tp_usrreq,
 233   tp_init,      0,              tp_slowtimo,    tp_drain,
 234 },
 235 #endif
 236 /* EON (ISO CLNL over IP) */
 237 #if EON
 238 { SOCK_RAW,     &inetdomain,    IPPROTO_EON,    0,
 239   eoninput,     0,              eonctlinput,            0,
 240   0,
 241   eonprotoinit, 0,              0,              0,
 242 },
 243 #endif
 244 #if IPXIP
 245 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR,
 246   ipxip_input,  0,              ipxip_ctlinput, 0,
 247   0,
 248   0,            0,              0,              0,
 249   0, &rip_usrreqs
 250 },
 251 #endif
 252 #if NSIP
 253 { SOCK_RAW,     &inetdomain,    IPPROTO_IDP,    PR_ATOMIC|PR_ADDR,
 254   idpip_input,  0,              nsip_ctlinput,  0,
 255   0,
 256   0,            0,              0,              0,
 257   0, &rip_usrreqs
 258 },
 259 #endif
 260         /* raw wildcard */
 261 { SOCK_RAW,     &inetdomain,    0,              PR_ATOMIC|PR_ADDR,
 262   rip_input,    0,              0,              rip_ctloutput,
 263   0,
 264   rip_init,     0,              0,              0,
 265   0, &rip_usrreqs
 266 },
 267 };
 268
 269 #if NGIF > 0
 270 struct protosw in_gif_protosw =
 271 { SOCK_RAW,     &inetdomain,    0/*IPPROTO_IPV[46]*/,   PR_ATOMIC|PR_ADDR,
 272   in_gif_input, rip_output,     0,              rip_ctloutput,
 273   0,
 274   0,            0,              0,              0,
 275   0, &rip_usrreqs
 276 };
 277 #endif /*NGIF*/
 278
 279 extern int in_inithead __P((void **, int));
 280
 281 int in_proto_count = (sizeof (inetsw) / sizeof (struct protosw));
 282
 283 extern void in_dinit(void);
 284 /* A routing init function, and a header size */
 285 struct domain inetdomain =
 286     { AF_INET, "internet", in_dinit, 0, 0,
 287       inetsw, 0,
 288       in_inithead, 32, sizeof(struct sockaddr_in),
 289       sizeof(struct tcpiphdr), 0
 290     };
 291
 292 DOMAIN_SET(inet);
 293
 294
 295 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
 296         "Internet Family");
 297
 298 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
 299 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
 300 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
 301 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
 302 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
 303 #if IPSEC
 304 SYSCTL_NODE(_net_inet, IPPROTO_AH,      ipsec,  CTLFLAG_RW, 0,  "IPSEC");
 305 #endif /* IPSEC */
 306 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
 307 #if IPDIVERT
 308 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  div,    CTLFLAG_RW, 0,  "DIVERT");
 309 #endif
 310