1 /* $NetBSD: in_proto.c,v 1.79 2006/11/23 04:07:07 rpaulo Exp $ */
2
3 /*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1982, 1986, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: in_proto.c,v 1.79 2006/11/23 04:07:07 rpaulo Exp $");
65
66 #include "opt_mrouting.h"
67 #include "opt_eon.h" /* ISO CLNL over IP */
68 #include "opt_iso.h" /* ISO TP tunneled over IP */
69 #include "opt_inet.h"
70 #include "opt_ipsec.h"
71 #include "opt_pim.h"
72
73 #include <sys/param.h>
74 #include <sys/socket.h>
75 #include <sys/protosw.h>
76 #include <sys/domain.h>
77 #include <sys/mbuf.h>
78
79 #include <net/if.h>
80 #include <net/radix.h>
81 #include <net/route.h>
82
83 #include <netinet/in.h>
84 #include <netinet/in_systm.h>
85 #include <netinet/ip.h>
86 #include <netinet/ip_var.h>
87 #include <netinet/ip_icmp.h>
88 #include <netinet/in_ifattach.h>
89 #include <netinet/in_pcb.h>
90 #include <netinet/in_proto.h>
91
92 #ifdef INET6
93 #ifndef INET
94 #include <netinet/in.h>
95 #endif
96 #include <netinet/ip6.h>
97 #endif
98
99 #include <netinet/igmp_var.h>
100 #ifdef PIM
101 #include <netinet/pim_var.h>
102 #endif
103 #include <netinet/tcp.h>
104 #include <netinet/tcp_fsm.h>
105 #include <netinet/tcp_seq.h>
106 #include <netinet/tcp_timer.h>
107 #include <netinet/tcp_var.h>
108 #include <netinet/tcpip.h>
109 #include <netinet/tcp_debug.h>
110 #include <netinet/udp.h>
111 #include <netinet/udp_var.h>
112 #include <netinet/ip_encap.h>
113
114 /*
115 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
116 */
117
118 #ifdef IPSEC
119 #include <netinet6/ipsec.h>
120 #include <netinet6/ah.h>
121 #ifdef IPSEC_ESP
122 #include <netinet6/esp.h>
123 #endif
124 #include <netinet6/ipcomp.h>
125 #endif /* IPSEC */
126
127 #ifdef FAST_IPSEC
128 #include <netipsec/ipsec.h>
129 #include <netipsec/key.h>
130 #endif /* FAST_IPSEC */
131
132 #ifdef TPIP
133 #include <netiso/tp_param.h>
134 #include <netiso/tp_var.h>
135 #endif /* TPIP */
136
137 #ifdef EON
138 #include <netiso/eonvar.h>
139 #endif /* EON */
140
141 #include "gre.h"
142 #if NGRE > 0
143 #include <netinet/ip_gre.h>
144 #endif
145
146 #include "carp.h"
147 #if NCARP > 0
148 #include <netinet/ip_carp.h>
149 #endif
150
151 #include "etherip.h"
152 #if NETHERIP > 0
153 #include <netinet/ip_etherip.h>
154 #endif
155
156 DOMAIN_DEFINE(inetdomain); /* forward declare and add to link set */
157
158 const struct protosw inetsw[] = {
159 { 0, &inetdomain, 0, 0,
160 0, ip_output, 0, 0,
161 0,
162 ip_init, 0, ip_slowtimo, ip_drain,
163 },
164 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR|PR_PURGEIF,
165 udp_input, 0, udp_ctlinput, udp_ctloutput,
166 udp_usrreq,
167 udp_init, 0, 0, 0,
168 },
169 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF,
170 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
171 tcp_usrreq,
172 tcp_init, 0, tcp_slowtimo, tcp_drain,
173 },
174 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR|PR_PURGEIF,
175 rip_input, rip_output, rip_ctlinput, rip_ctloutput,
176 rip_usrreq,
177 0, 0, 0, 0,
178 },
179 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
180 icmp_input, rip_output, rip_ctlinput, rip_ctloutput,
181 rip_usrreq,
182 icmp_init, 0, 0, 0,
183 },
184 #ifdef IPSEC
185 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
186 ah4_input, 0, ah4_ctlinput, 0,
187 0,
188 0, 0, 0, 0,
189 },
190 #ifdef IPSEC_ESP
191 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
192 esp4_input,
193 0, esp4_ctlinput, 0,
194 0,
195 0, 0, 0, 0,
196 },
197 #endif
198 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
199 ipcomp4_input,
200 0, 0, 0,
201 0,
202 0, 0, 0, 0,
203 },
204 #endif /* IPSEC */
205 #ifdef FAST_IPSEC
206 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
207 ipsec4_common_input, 0, ah4_ctlinput, 0,
208 0, 0, 0, 0, 0,
209 },
210 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
211 ipsec4_common_input, 0, esp4_ctlinput, 0,
212 0,
213 0, 0, 0, 0,
214 },
215 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
216 ipsec4_common_input, 0, 0, 0,
217 0,
218 0, 0, 0, 0,
219 },
220 #endif /* FAST_IPSEC */
221 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
222 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
223 rip_usrreq, /*XXX*/
224 encap_init, 0, 0, 0,
225 },
226 #ifdef INET6
227 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
228 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
229 rip_usrreq, /*XXX*/
230 encap_init, 0, 0, 0,
231 },
232 #endif /* INET6 */
233 #if NETHERIP > 0
234 { SOCK_RAW, &inetdomain, IPPROTO_ETHERIP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
235 ip_etherip_input, rip_output, rip_ctlinput, rip_ctloutput,
236 rip_usrreq,
237 0, 0, 0, 0,
238 },
239 #endif
240 #if NCARP > 0
241 { SOCK_RAW, &inetdomain, IPPROTO_CARP, PR_ATOMIC|PR_ADDR,
242 carp_proto_input, rip_output, 0, rip_ctloutput,
243 rip_usrreq,
244 0, 0, 0, 0,
245 },
246 #endif
247 #if NGRE > 0
248 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
249 gre_input, rip_output, rip_ctlinput, rip_ctloutput,
250 rip_usrreq,
251 0, 0, 0, 0,
252 },
253 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
254 gre_mobile_input, rip_output, rip_ctlinput, rip_ctloutput,
255 rip_usrreq,
256 0, 0, 0, 0,
257 },
258 #endif /* NGRE > 0 */
259 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
260 igmp_input, rip_output, rip_ctlinput, rip_ctloutput,
261 rip_usrreq,
262 NULL, igmp_fasttimo, igmp_slowtimo, 0,
263 },
264 #ifdef PIM
265 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
266 pim_input, rip_output, rip_ctlinput, rip_ctloutput,
267 rip_usrreq,
268 NULL, 0, 0, 0,
269 },
270 #endif /* PIM */
271 #ifdef TPIP
272 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_LASTHDR|PR_ABRTACPTDIS,
273 tpip_input, 0, tpip_ctlinput, tp_ctloutput,
274 tp_usrreq,
275 tp_init, 0, tp_slowtimo, tp_drain,
276 },
277 #endif /* TPIP */
278 #ifdef ISO
279 /* EON (ISO CLNL over IP) */
280 #ifdef EON
281 { SOCK_RAW, &inetdomain, IPPROTO_EON, PR_LASTHDR,
282 eoninput, 0, eonctlinput, 0,
283 0,
284 eonprotoinit, 0, 0, 0,
285 },
286 #else
287 { SOCK_RAW, &inetdomain, IPPROTO_EON, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
288 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
289 rip_usrreq, /*XXX*/
290 encap_init, 0, 0, 0,
291 },
292 #endif /* EON */
293 #endif /* ISO */
294 /* raw wildcard */
295 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
296 rip_input, rip_output, rip_ctlinput, rip_ctloutput,
297 rip_usrreq,
298 rip_init, 0, 0, 0,
299 },
300 };
301
302 extern struct ifqueue ipintrq;
303
304 struct domain inetdomain = {
305 PF_INET, "internet", 0, 0, 0,
306 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])],
307 rn_inithead, 32, sizeof(struct sockaddr_in),
308 #ifdef IPSELSRC
309 in_domifattach,
310 in_domifdetach,
311 #else
312 NULL,
313 NULL,
314 #endif
315 { &ipintrq, NULL },
316 { NULL },
317 MOWNER_INIT("",""),
318 };
319
320 u_char ip_protox[IPPROTO_MAX];
321
322 int icmperrppslim = 100; /* 100pps */
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