1 /* $NetBSD: in_proto.c,v 1.62 2003/12/04 19:38:24 atatat 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 1.62 2003/12/04 19:38:24 atatat 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_ns.h" /* NSIP: XNS tunneled over IP */
70 #include "opt_inet.h"
71 #include "opt_ipsec.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_pcb.h>
89
90 #ifdef INET6
91 #ifndef INET
92 #include <netinet/in.h>
93 #endif
94 #include <netinet/ip6.h>
95 #endif
96
97 #include <netinet/igmp_var.h>
98 #include <netinet/tcp.h>
99 #include <netinet/tcp_fsm.h>
100 #include <netinet/tcp_seq.h>
101 #include <netinet/tcp_timer.h>
102 #include <netinet/tcp_var.h>
103 #include <netinet/tcpip.h>
104 #include <netinet/tcp_debug.h>
105 #include <netinet/udp.h>
106 #include <netinet/udp_var.h>
107 #include <netinet/ip_encap.h>
108 /*
109 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
110 */
111
112 #ifdef IPSEC
113 #include <netinet6/ipsec.h>
114 #include <netinet6/ah.h>
115 #ifdef IPSEC_ESP
116 #include <netinet6/esp.h>
117 #endif
118 #include <netinet6/ipcomp.h>
119 #endif /* IPSEC */
120
121 #ifdef FAST_IPSEC
122 #include <netipsec/ipsec.h>
123 #include <netipsec/key.h>
124 #endif /* FAST_IPSEC */
125
126 #ifdef NSIP
127 #include <netns/ns_var.h>
128 #include <netns/idp_var.h>
129 #endif /* NSIP */
130
131 #ifdef TPIP
132 #include <netiso/tp_param.h>
133 #include <netiso/tp_var.h>
134 #endif /* TPIP */
135
136 #ifdef EON
137 #include <netiso/eonvar.h>
138 #endif /* EON */
139
140 #include "gre.h"
141 #if NGRE > 0
142 #include <netinet/ip_gre.h>
143 #endif
144
145 extern struct domain inetdomain;
146
147 struct protosw inetsw[] = {
148 { 0, &inetdomain, 0, 0,
149 0, ip_output, 0, 0,
150 0,
151 ip_init, 0, ip_slowtimo, ip_drain, NULL
152 },
153 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
154 udp_input, 0, udp_ctlinput, ip_ctloutput,
155 udp_usrreq,
156 udp_init, 0, 0, 0, NULL
157 },
158 { SOCK_STREAM, &inetdomain, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS,
159 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
160 tcp_usrreq,
161 tcp_init, 0, tcp_slowtimo, tcp_drain, NULL
162 },
163 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
164 rip_input, rip_output, rip_ctlinput, rip_ctloutput,
165 rip_usrreq,
166 0, 0, 0, 0,
167 },
168 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
169 icmp_input, rip_output, rip_ctlinput, rip_ctloutput,
170 rip_usrreq,
171 icmp_init, 0, 0, 0, NULL
172 },
173 #ifdef IPSEC
174 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
175 ah4_input, 0, ah4_ctlinput, 0,
176 0,
177 0, 0, 0, 0, NULL
178 },
179 #ifdef IPSEC_ESP
180 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
181 esp4_input,
182 0, esp4_ctlinput, 0,
183 0,
184 0, 0, 0, 0, NULL
185 },
186 #endif
187 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
188 ipcomp4_input,
189 0, 0, 0,
190 0,
191 0, 0, 0, 0, NULL
192 },
193 #endif /* IPSEC */
194 #ifdef FAST_IPSEC
195 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
196 ipsec4_common_input, 0, ah4_ctlinput, 0,
197 0,
198 0, 0, 0, 0, NULL
199 },
200 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
201 ipsec4_common_input, 0, esp4_ctlinput, 0,
202 0,
203 0, 0, 0, 0, NULL
204 },
205 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
206 ipsec4_common_input, 0, 0, 0,
207 0,
208 0, 0, 0, 0, NULL
209 },
210 #endif /* FAST_IPSEC */
211 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
212 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
213 rip_usrreq, /*XXX*/
214 encap_init, 0, 0, 0,
215 },
216 #ifdef INET6
217 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
218 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
219 rip_usrreq, /*XXX*/
220 encap_init, 0, 0, 0,
221 },
222 #endif /* INET6 */
223 #if NGRE > 0
224 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
225 gre_input, rip_output, rip_ctlinput, rip_ctloutput,
226 rip_usrreq,
227 0, 0, 0, 0,
228 },
229 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
230 gre_mobile_input, rip_output, rip_ctlinput, rip_ctloutput,
231 rip_usrreq,
232 0, 0, 0, 0,
233 },
234 #endif /* NGRE > 0 */
235 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
236 igmp_input, rip_output, rip_ctlinput, rip_ctloutput,
237 rip_usrreq,
238 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
239 },
240 #ifdef TPIP
241 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_LASTHDR|PR_ABRTACPTDIS,
242 tpip_input, 0, tpip_ctlinput, tp_ctloutput,
243 tp_usrreq,
244 tp_init, 0, tp_slowtimo, tp_drain,
245 },
246 #endif /* TPIP */
247 #ifdef ISO
248 /* EON (ISO CLNL over IP) */
249 #ifdef EON
250 { SOCK_RAW, &inetdomain, IPPROTO_EON, PR_LASTHDR,
251 eoninput, 0, eonctlinput, 0,
252 0,
253 eonprotoinit, 0, 0, 0,
254 },
255 #else
256 { SOCK_RAW, &inetdomain, IPPROTO_EON, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
257 encap4_input, rip_output, rip_ctlinput, rip_ctloutput,
258 rip_usrreq, /*XXX*/
259 encap_init, 0, 0, 0,
260 },
261 #endif /* EON */
262 #endif /* ISO */
263 #ifdef NSIP
264 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
265 idpip_input, NULL, nsip_ctlinput, 0,
266 rip_usrreq,
267 0, 0, 0, 0,
268 },
269 #endif /* NSIP */
270 /* raw wildcard */
271 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
272 rip_input, rip_output, rip_ctlinput, rip_ctloutput,
273 rip_usrreq,
274 rip_init, 0, 0, 0,
275 },
276 };
277
278 struct domain inetdomain =
279 { PF_INET, "internet", 0, 0, 0,
280 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
281 rn_inithead, 32, sizeof(struct sockaddr_in) };
282
283 u_char ip_protox[IPPROTO_MAX];
284
285 int icmperrppslim = 100; /* 100pps */
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