Annotation of sys/netinet6/in6_proto.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: in6_proto.c,v 1.52 2007/05/03 15:47:47 claudio Exp $ */
! 2: /* $KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $ */
! 3:
! 4: /*
! 5: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the project nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: */
! 32:
! 33: /*
! 34: * Copyright (c) 1982, 1986, 1993
! 35: * The Regents of the University of California. All rights reserved.
! 36: *
! 37: * Redistribution and use in source and binary forms, with or without
! 38: * modification, are permitted provided that the following conditions
! 39: * are met:
! 40: * 1. Redistributions of source code must retain the above copyright
! 41: * notice, this list of conditions and the following disclaimer.
! 42: * 2. Redistributions in binary form must reproduce the above copyright
! 43: * notice, this list of conditions and the following disclaimer in the
! 44: * documentation and/or other materials provided with the distribution.
! 45: * 3. Neither the name of the University nor the names of its contributors
! 46: * may be used to endorse or promote products derived from this software
! 47: * without specific prior written permission.
! 48: *
! 49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 59: * SUCH DAMAGE.
! 60: *
! 61: * @(#)in_proto.c 8.1 (Berkeley) 6/10/93
! 62: */
! 63:
! 64: #include <sys/param.h>
! 65: #include <sys/socket.h>
! 66: #include <sys/protosw.h>
! 67: #include <sys/kernel.h>
! 68: #include <sys/domain.h>
! 69: #include <sys/mbuf.h>
! 70:
! 71: #include <net/if.h>
! 72: #include <net/radix.h>
! 73: #ifndef SMALL_KERNEL
! 74: #include <net/radix_mpath.h>
! 75: #endif
! 76: #include <net/route.h>
! 77:
! 78: #include <netinet/in.h>
! 79: #include <netinet/in_systm.h>
! 80: #include <netinet/in_var.h>
! 81: #include <netinet/ip.h>
! 82: #include <netinet/ip_var.h>
! 83: #include <netinet/in_pcb.h>
! 84: #include <netinet/ip6.h>
! 85: #include <netinet6/ip6_var.h>
! 86: #include <netinet/icmp6.h>
! 87:
! 88: #include <netinet/tcp.h>
! 89: #include <netinet/tcp_timer.h>
! 90: #include <netinet/tcp_var.h>
! 91: #include <netinet/udp.h>
! 92: #include <netinet/udp_var.h>
! 93: #include <netinet/ip_ipsp.h>
! 94: #include <netinet/ip_ah.h>
! 95: #include <netinet/ip_esp.h>
! 96: #include <netinet/ip_ipip.h>
! 97:
! 98: #ifdef MROUTING
! 99: #include <netinet6/pim6_var.h>
! 100: #endif
! 101:
! 102: #include <netinet6/nd6.h>
! 103:
! 104: #include <netinet6/ip6protosw.h>
! 105:
! 106: #include "gif.h"
! 107: #if NGIF > 0
! 108: #include <netinet6/in6_gif.h>
! 109: #endif
! 110:
! 111: #include "carp.h"
! 112: #if NCARP > 0
! 113: #include <netinet/ip_carp.h>
! 114: #endif
! 115:
! 116: /*
! 117: * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
! 118: */
! 119:
! 120: extern struct domain inet6domain;
! 121:
! 122: struct ip6protosw inet6sw[] = {
! 123: { 0, &inet6domain, IPPROTO_IPV6, 0,
! 124: 0, 0, 0, 0,
! 125: 0,
! 126: ip6_init, 0, frag6_slowtimo, frag6_drain,
! 127: ip6_sysctl,
! 128: },
! 129: { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
! 130: udp6_input, 0, udp6_ctlinput, ip6_ctloutput,
! 131: udp6_usrreq, 0,
! 132: 0, 0, 0,
! 133: udp_sysctl,
! 134: },
! 135: { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_ABRTACPTDIS,
! 136: tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput,
! 137: tcp6_usrreq,
! 138: #ifdef INET /* don't call initialization and timeout routines twice */
! 139: 0, 0, 0, tcp_drain,
! 140: #else
! 141: tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain,
! 142: #endif
! 143: tcp_sysctl,
! 144: },
! 145: { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
! 146: rip6_input, rip6_output, rip6_ctlinput, rip6_ctloutput,
! 147: rip6_usrreq,
! 148: 0, 0, 0, 0,
! 149: },
! 150: { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR,
! 151: icmp6_input, rip6_output, rip6_ctlinput, rip6_ctloutput,
! 152: rip6_usrreq,
! 153: icmp6_init, icmp6_fasttimo, 0, 0,
! 154: icmp6_sysctl,
! 155: },
! 156: { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR,
! 157: dest6_input, 0, 0, 0,
! 158: 0,
! 159: 0, 0, 0, 0,
! 160: },
! 161: { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR,
! 162: route6_input, 0, 0, 0,
! 163: 0,
! 164: 0, 0, 0, 0,
! 165: },
! 166: { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR,
! 167: frag6_input, 0, 0, 0,
! 168: 0,
! 169: 0, 0, 0, 0,
! 170: },
! 171: #ifdef IPSEC
! 172: { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
! 173: ah6_input, 0, 0, 0,
! 174: 0,
! 175: 0, 0, 0, 0,
! 176: ah_sysctl,
! 177: },
! 178: { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
! 179: esp6_input, 0, 0, 0,
! 180: 0,
! 181: 0, 0, 0, 0,
! 182: esp_sysctl,
! 183: },
! 184: { SOCK_RAW, &inet6domain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
! 185: ipcomp6_input, 0, 0, 0,
! 186: 0,
! 187: 0, 0, 0, 0,
! 188: ipcomp_sysctl,
! 189: },
! 190: #endif /* IPSEC */
! 191: #if NGIF > 0
! 192: { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR,
! 193: in6_gif_input, rip6_output, 0, rip6_ctloutput,
! 194: rip6_usrreq, /* XXX */
! 195: 0, 0, 0, 0,
! 196: },
! 197: #ifdef INET
! 198: { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR,
! 199: in6_gif_input, rip6_output, 0, rip6_ctloutput,
! 200: rip6_usrreq, /* XXX */
! 201: 0, 0, 0, 0,
! 202: },
! 203: #endif /* INET */
! 204: #else /* NGIF */
! 205: { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR,
! 206: ip4_input6, rip6_output, 0, rip6_ctloutput,
! 207: rip6_usrreq, /* XXX */
! 208: 0, 0, 0, 0, ipip_sysctl
! 209: },
! 210: #ifdef INET
! 211: { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR,
! 212: ip4_input6, rip6_output, 0, rip6_ctloutput,
! 213: rip6_usrreq, /* XXX */
! 214: 0, 0, 0, 0,
! 215: },
! 216: #endif /* INET */
! 217: #endif /* GIF */
! 218: #ifdef MROUTING
! 219: { SOCK_RAW, &inet6domain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR,
! 220: pim6_input, rip6_output, 0, rip6_ctloutput,
! 221: rip6_usrreq,
! 222: 0, 0, 0, 0,
! 223: },
! 224: #endif
! 225: #if NCARP > 0
! 226: { SOCK_RAW, &inet6domain, IPPROTO_CARP, PR_ATOMIC|PR_ADDR,
! 227: carp6_proto_input, rip6_output, 0, rip6_ctloutput,
! 228: rip6_usrreq,
! 229: 0, 0, 0, 0, carp_sysctl
! 230: },
! 231: #endif /* NCARP */
! 232: /* raw wildcard */
! 233: { SOCK_RAW, &inet6domain, 0, PR_ATOMIC|PR_ADDR,
! 234: rip6_input, rip6_output, 0, rip6_ctloutput,
! 235: rip6_usrreq, rip6_init,
! 236: 0, 0, 0,
! 237: },
! 238: };
! 239:
! 240: struct domain inet6domain =
! 241: { AF_INET6, "internet6", 0, 0, 0,
! 242: (struct protosw *)inet6sw,
! 243: (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0,
! 244: #ifndef SMALL_KERNEL
! 245: rn_mpath_inithead,
! 246: #else
! 247: rn_inithead,
! 248: #endif
! 249: offsetof(struct sockaddr_in6, sin6_addr) << 3,
! 250: sizeof(struct sockaddr_in6),
! 251: in6_domifattach, in6_domifdetach, };
! 252:
! 253: /*
! 254: * Internet configuration info
! 255: */
! 256: int ip6_forwarding = 0; /* no forwarding unless sysctl'd to enable */
! 257: int ip6_mforwarding = 0; /* no multicast forwarding unless ... */
! 258: int ip6_multipath = 0; /* no using multipath routes unless ... */
! 259: int ip6_sendredirects = 1;
! 260: int ip6_defhlim = IPV6_DEFHLIM;
! 261: int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
! 262: int ip6_accept_rtadv = 0; /* enabling forwarding and rtadv concurrently is dangerous */
! 263: int ip6_maxfragpackets = 200;
! 264: int ip6_maxfrags = 200;
! 265: int ip6_log_interval = 5;
! 266: int ip6_hdrnestlimit = 10; /* appropriate? */
! 267: int ip6_dad_count = 1; /* DupAddrDetectionTransmits */
! 268: int ip6_auto_flowlabel = 1;
! 269: int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
! 270: int ip6_rr_prune = 5; /* router renumbering prefix
! 271: * walk list every 5 sec. */
! 272: int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */
! 273: const int ip6_v6only = 1;
! 274: u_int32_t ip6_id = 0UL;
! 275: int ip6_keepfaith = 0;
! 276: time_t ip6_log_time = (time_t)0L;
! 277:
! 278: /* icmp6 */
! 279: /*
! 280: * BSDI4 defines these variables in in_proto.c...
! 281: * XXX: what if we don't define INET? Should we define pmtu6_expire
! 282: * or so? (jinmei@kame.net 19990310)
! 283: */
! 284: int pmtu_expire = 60*10;
! 285:
! 286: /* raw IP6 parameters */
! 287: /*
! 288: * Nominal space allocated to a raw ip socket.
! 289: */
! 290: #define RIPV6SNDQ 8192
! 291: #define RIPV6RCVQ 8192
! 292:
! 293: u_long rip6_sendspace = RIPV6SNDQ;
! 294: u_long rip6_recvspace = RIPV6RCVQ;
! 295:
! 296: /* ICMPV6 parameters */
! 297: int icmp6_rediraccept = 1; /* accept and process redirects */
! 298: int icmp6_redirtimeout = 10 * 60; /* 10 minutes */
! 299: struct timeval icmp6errratelim = { 0, 0 }; /* no ratelimit */
! 300: int icmp6errppslim = 100; /* 100pps */
! 301: int icmp6_nodeinfo = 1; /* enable/disable NI response */
! 302:
! 303: /* UDP on IP6 parameters */
! 304: int udp6_sendspace = 9216; /* really max datagram size */
! 305: int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
! 306: /* 40 1K datagrams */
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