Annotation of src/sys/netinet6/in6_proto.c, Revision 1.62
1.62 ! rpaulo 1: /* $NetBSD: in6_proto.c,v 1.61 2005/12/11 12:25:02 christos Exp $ */
1.21 itojun 2: /* $KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $ */
1.3 thorpej 3:
1.2 itojun 4: /*
5: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6: * All rights reserved.
1.18 itojun 7: *
1.2 itojun 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.
1.18 itojun 19: *
1.2 itojun 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.
1.49 agc 45: * 3. Neither the name of the University nor the names of its contributors
1.2 itojun 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: */
1.34 lukem 63:
64: #include <sys/cdefs.h>
1.62 ! rpaulo 65: __KERNEL_RCSID(0, "$NetBSD: in6_proto.c,v 1.61 2005/12/11 12:25:02 christos Exp $");
1.2 itojun 66:
67: #include "opt_inet.h"
1.4 thorpej 68: #include "opt_ipsec.h"
1.26 itojun 69: #include "opt_iso.h"
1.2 itojun 70:
71: #include <sys/param.h>
72: #include <sys/socket.h>
73: #include <sys/protosw.h>
74: #include <sys/kernel.h>
75: #include <sys/domain.h>
76: #include <sys/mbuf.h>
77:
78: #include <net/if.h>
79: #include <net/radix.h>
80: #include <net/route.h>
81:
82: #include <netinet/in.h>
83: #include <netinet/in_systm.h>
84: #include <netinet/in_var.h>
1.17 itojun 85: #include <netinet/ip_encap.h>
1.2 itojun 86: #include <netinet/ip.h>
87: #include <netinet/ip_var.h>
88: #include <netinet/in_pcb.h>
1.13 itojun 89: #include <netinet/ip6.h>
1.2 itojun 90: #include <netinet6/ip6_var.h>
1.13 itojun 91: #include <netinet/icmp6.h>
1.2 itojun 92: #include <netinet6/in6_pcb.h>
93:
94: #include <netinet/tcp.h>
95: #include <netinet/tcp_fsm.h>
96: #include <netinet/tcp_seq.h>
97: #include <netinet/tcp_timer.h>
98: #include <netinet/tcp_var.h>
99: #include <netinet/tcpip.h>
100: #include <netinet/tcp_debug.h>
101:
102: #include <netinet6/udp6.h>
103: #include <netinet6/udp6_var.h>
104:
105: #include <netinet6/pim6_var.h>
106:
107: #include <netinet6/nd6.h>
108:
109: #ifdef IPSEC
1.9 itojun 110: #include <netinet6/ipsec.h>
1.2 itojun 111: #include <netinet6/ah.h>
112: #ifdef IPSEC_ESP
113: #include <netinet6/esp.h>
114: #endif
115: #include <netinet6/ipcomp.h>
1.32 itojun 116: #endif /* IPSEC */
1.2 itojun 117:
118: #include <netinet6/ip6protosw.h>
119:
1.35 itojun 120: #include <net/net_osdep.h>
121:
1.47 thorpej 122: #ifndef offsetof /* XXX */
1.2 itojun 123: #define offsetof(type, member) ((size_t)(&((type *)0)->member))
1.47 thorpej 124: #endif
1.2 itojun 125:
126: /*
127: * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
128: */
129:
1.58 matt 130: DOMAIN_DEFINE(inet6domain); /* forward declare and add to link set */
1.2 itojun 131:
1.57 matt 132: const struct ip6protosw inet6sw[] = {
1.2 itojun 133: { 0, &inet6domain, IPPROTO_IPV6, 0,
134: 0, 0, 0, 0,
135: 0,
1.9 itojun 136: ip6_init, 0, frag6_slowtimo, frag6_drain,
1.56 atatat 137: NULL,
1.2 itojun 138: },
1.60 gdt 139: { SOCK_DGRAM, &inet6domain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR|PR_PURGEIF,
1.2 itojun 140: udp6_input, 0, udp6_ctlinput, ip6_ctloutput,
1.12 itojun 141: udp6_usrreq, udp6_init,
1.9 itojun 142: 0, 0, 0,
1.56 atatat 143: NULL,
1.2 itojun 144: },
1.60 gdt 145: { SOCK_STREAM, &inet6domain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF,
1.2 itojun 146: tcp6_input, 0, tcp6_ctlinput, tcp_ctloutput,
147: tcp_usrreq,
1.20 enami 148: #ifdef INET /* don't call initialization and timeout routines twice */
1.51 itojun 149: 0, 0, 0, 0,
1.9 itojun 150: #else
1.52 itojun 151: tcp_init, 0, tcp_slowtimo, tcp_drain,
1.9 itojun 152: #endif
1.56 atatat 153: NULL,
1.2 itojun 154: },
1.60 gdt 155: { SOCK_RAW, &inet6domain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR|PR_PURGEIF,
1.16 itojun 156: rip6_input, rip6_output, rip6_ctlinput, rip6_ctloutput,
1.2 itojun 157: rip6_usrreq,
1.9 itojun 158: 0, 0, 0, 0,
1.2 itojun 159: },
1.28 itojun 160: { SOCK_RAW, &inet6domain, IPPROTO_ICMPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.25 itojun 161: icmp6_input, rip6_output, rip6_ctlinput, rip6_ctloutput,
1.2 itojun 162: rip6_usrreq,
1.62 ! rpaulo 163: icmp6_init, 0, 0, 0,
1.2 itojun 164: },
165: { SOCK_RAW, &inet6domain, IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR,
166: dest6_input, 0, 0, 0,
1.43 itojun 167: 0,
1.2 itojun 168: 0, 0, 0, 0,
169: },
170: { SOCK_RAW, &inet6domain, IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR,
171: route6_input, 0, 0, 0,
1.43 itojun 172: 0,
1.2 itojun 173: 0, 0, 0, 0,
174: },
175: { SOCK_RAW, &inet6domain, IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR,
176: frag6_input, 0, 0, 0,
1.43 itojun 177: 0,
1.2 itojun 178: 0, 0, 0, 0,
179: },
180: #ifdef IPSEC
181: { SOCK_RAW, &inet6domain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
1.22 itojun 182: ah6_input, 0, ah6_ctlinput, 0,
1.43 itojun 183: 0,
1.9 itojun 184: 0, 0, 0, 0,
1.56 atatat 185: NULL,
1.2 itojun 186: },
187: #ifdef IPSEC_ESP
188: { SOCK_RAW, &inet6domain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
1.22 itojun 189: esp6_input, 0, esp6_ctlinput, 0,
1.43 itojun 190: 0,
1.9 itojun 191: 0, 0, 0, 0,
1.56 atatat 192: NULL,
1.2 itojun 193: },
194: #endif
195: { SOCK_RAW, &inet6domain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
196: ipcomp6_input, 0, 0, 0,
1.43 itojun 197: 0,
1.9 itojun 198: 0, 0, 0, 0,
1.56 atatat 199: NULL,
1.2 itojun 200: },
201: #endif /* IPSEC */
1.17 itojun 202: #ifdef INET
1.28 itojun 203: { SOCK_RAW, &inet6domain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.38 itojun 204: encap6_input, rip6_output, encap6_ctlinput, rip6_ctloutput,
1.17 itojun 205: rip6_usrreq,
1.37 itojun 206: encap_init, 0, 0, 0,
1.2 itojun 207: },
1.17 itojun 208: #endif
1.28 itojun 209: { SOCK_RAW, &inet6domain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.38 itojun 210: encap6_input, rip6_output, encap6_ctlinput, rip6_ctloutput,
1.17 itojun 211: rip6_usrreq,
212: encap_init, 0, 0, 0,
1.2 itojun 213: },
1.26 itojun 214: #ifdef ISO
1.28 itojun 215: { SOCK_RAW, &inet6domain, IPPROTO_EON, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.38 itojun 216: encap6_input, rip6_output, encap6_ctlinput, rip6_ctloutput,
1.27 itojun 217: rip6_usrreq, /*XXX*/
1.37 itojun 218: encap_init, 0, 0, 0,
1.26 itojun 219: },
220: #endif
1.28 itojun 221: { SOCK_RAW, &inet6domain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.42 itojun 222: pim6_input, rip6_output, 0, rip6_ctloutput,
1.2 itojun 223: rip6_usrreq,
224: 0, 0, 0, 0,
225: },
226: /* raw wildcard */
1.50 itojun 227: { SOCK_RAW, &inet6domain, 0, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
1.2 itojun 228: rip6_input, rip6_output, 0, rip6_ctloutput,
1.15 itojun 229: rip6_usrreq,
230: rip6_init, 0, 0, 0,
1.2 itojun 231: },
232: };
1.17 itojun 233:
1.2 itojun 234: struct domain inet6domain =
1.24 itojun 235: { AF_INET6, "internet6", 0, 0, 0,
1.59 christos 236: (const struct protosw *)inet6sw,
237: (const struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
1.9 itojun 238: rn_inithead,
239: offsetof(struct sockaddr_in6, sin6_addr) << 3,
1.41 itojun 240: sizeof(struct sockaddr_in6),
241: in6_domifattach, in6_domifdetach, };
1.2 itojun 242:
243: /*
244: * Internet configuration info
245: */
246: #ifndef IPV6FORWARDING
247: #ifdef GATEWAY6
248: #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
249: #else
250: #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
251: #endif /* GATEWAY6 */
252: #endif /* !IPV6FORWARDING */
253:
254: int ip6_forwarding = IPV6FORWARDING; /* act as router? */
1.48 itojun 255: int ip6_sendredirects = 1;
1.2 itojun 256: int ip6_defhlim = IPV6_DEFHLIM;
257: int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
258: int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */
259: int ip6_maxfragpackets = 200;
1.40 itojun 260: int ip6_maxfrags = 200;
1.2 itojun 261: int ip6_log_interval = 5;
262: int ip6_hdrnestlimit = 50; /* appropriate? */
263: int ip6_dad_count = 1; /* DupAddrDetectionTransmits */
264: int ip6_auto_flowlabel = 1;
1.45 itojun 265: int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
1.9 itojun 266: int ip6_rr_prune = 5; /* router renumbering prefix
1.38 itojun 267: * walk list every 5 sec. */
1.62 ! rpaulo 268: int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */
1.55 briggs 269: int ip6_v6only = 1;
1.11 itojun 270:
1.2 itojun 271: int ip6_keepfaith = 0;
272: time_t ip6_log_time = (time_t)0L;
273:
274: /* icmp6 */
1.9 itojun 275: /*
276: * BSDI4 defines these variables in in_proto.c...
277: * XXX: what if we don't define INET? Should we define pmtu6_expire
278: * or so? (jinmei@kame.net 19990310)
279: */
1.2 itojun 280: int pmtu_expire = 60*10;
281:
282: /* raw IP6 parameters */
283: /*
284: * Nominal space allocated to a raw ip socket.
285: */
286: #define RIPV6SNDQ 8192
287: #define RIPV6RCVQ 8192
288:
289: u_long rip6_sendspace = RIPV6SNDQ;
290: u_long rip6_recvspace = RIPV6RCVQ;
291:
292: /* ICMPV6 parameters */
293: int icmp6_rediraccept = 1; /* accept and process redirects */
294: int icmp6_redirtimeout = 10 * 60; /* 10 minutes */
1.18 itojun 295: int icmp6errppslim = 100; /* 100pps */
1.10 itojun 296: int icmp6_nodeinfo = 1; /* enable/disable NI response */
1.2 itojun 297:
298: /* UDP on IP6 parameters */
299: int udp6_sendspace = 9216; /* really max datagram size */
300: int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
301: /* 40 1K datagrams */
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