1 /*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95
34 * $FreeBSD$
35 */
36
37 #include "opt_ipdivert.h"
38 #include "opt_ipx.h"
39 #include "opt_mrouting.h"
40 #include "opt_ipsec.h"
41 #include "opt_inet6.h"
42
43 #include <sys/param.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/domain.h>
47 #include <sys/protosw.h>
48 #include <sys/queue.h>
49 #include <sys/sysctl.h>
50
51 #include <net/if.h>
52 #include <net/route.h>
53
54 #include <netinet/in.h>
55 #include <netinet/in_systm.h>
56 #include <netinet/ip.h>
57 #include <netinet/ip_var.h>
58 #include <netinet/ip_icmp.h>
59 #include <netinet/igmp_var.h>
60 #ifdef PIM
61 #include <netinet/pim_var.h>
62 #endif
63 #include <netinet/tcp.h>
64 #include <netinet/tcp_timer.h>
65 #include <netinet/tcp_var.h>
66 #include <netinet/udp.h>
67 #include <netinet/udp_var.h>
68 #include <netinet/ip_encap.h>
69
70 #include <netinet/ipprotosw.h>
71
72 /*
73 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
74 */
75
76 #ifdef IPSEC
77 #include <netinet6/ipsec.h>
78 #include <netinet6/ah.h>
79 #ifdef IPSEC_ESP
80 #include <netinet6/esp.h>
81 #endif
82 #include <netinet6/ipcomp.h>
83 #endif /* IPSEC */
84
85 #ifdef FAST_IPSEC
86 #include <netipsec/ipsec.h>
87 #endif /* FAST_IPSEC */
88
89 #ifdef IPXIP
90 #include <netipx/ipx_ip.h>
91 #endif
92
93 #ifdef NSIP
94 #include <netns/ns.h>
95 #include <netns/ns_if.h>
96 #endif
97
98 extern struct domain inetdomain;
99 static struct pr_usrreqs nousrreqs;
100
101 struct ipprotosw inetsw[] = {
102 { 0, &inetdomain, 0, 0,
103 0, 0, 0, 0,
104 0,
105 ip_init, 0, ip_slowtimo, ip_drain,
106 &nousrreqs
107 },
108 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
109 udp_input, 0, udp_ctlinput, ip_ctloutput,
110 0,
111 udp_init, 0, 0, 0,
112 &udp_usrreqs
113 },
114 { SOCK_STREAM, &inetdomain, IPPROTO_TCP,
115 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
116 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
117 0,
118 tcp_init, 0, tcp_slowtimo, tcp_drain,
119 &tcp_usrreqs
120 },
121 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
122 rip_input, 0, rip_ctlinput, rip_ctloutput,
123 0,
124 0, 0, 0, 0,
125 &rip_usrreqs
126 },
127 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
128 icmp_input, 0, 0, rip_ctloutput,
129 0,
130 0, 0, 0, 0,
131 &rip_usrreqs
132 },
133 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
134 igmp_input, 0, 0, rip_ctloutput,
135 0,
136 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
137 &rip_usrreqs
138 },
139 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
140 rsvp_input, 0, 0, rip_ctloutput,
141 0,
142 0, 0, 0, 0,
143 &rip_usrreqs
144 },
145 #ifdef IPSEC
146 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
147 ah4_input, 0, 0, 0,
148 0,
149 0, 0, 0, 0,
150 &nousrreqs
151 },
152 #ifdef IPSEC_ESP
153 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
154 esp4_input, 0, 0, 0,
155 0,
156 0, 0, 0, 0,
157 &nousrreqs
158 },
159 #endif
160 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
161 ipcomp4_input, 0, 0, 0,
162 0,
163 0, 0, 0, 0,
164 &nousrreqs
165 },
166 #endif /* IPSEC */
167 #ifdef FAST_IPSEC
168 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
169 ipsec4_common_input, 0, 0, 0,
170 0,
171 0, 0, 0, 0,
172 &nousrreqs
173 },
174 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
175 ipsec4_common_input, 0, 0, 0,
176 0,
177 0, 0, 0, 0,
178 &nousrreqs
179 },
180 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
181 ipsec4_common_input, 0, 0, 0,
182 0,
183 0, 0, 0, 0,
184 &nousrreqs
185 },
186 #endif /* FAST_IPSEC */
187 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
188 encap4_input, 0, 0, rip_ctloutput,
189 0,
190 encap_init, 0, 0, 0,
191 &rip_usrreqs
192 },
193 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
194 encap4_input, 0, 0, rip_ctloutput,
195 0,
196 encap_init, 0, 0, 0,
197 &rip_usrreqs
198 },
199 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
200 encap4_input, 0, 0, rip_ctloutput,
201 0,
202 encap_init, 0, 0, 0,
203 &rip_usrreqs
204 },
205 # ifdef INET6
206 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
207 encap4_input, 0, 0, rip_ctloutput,
208 0,
209 encap_init, 0, 0, 0,
210 &rip_usrreqs
211 },
212 #endif
213 #ifdef IPDIVERT
214 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
215 div_input, 0, 0, ip_ctloutput,
216 0,
217 div_init, 0, 0, 0,
218 &div_usrreqs,
219 },
220 #endif
221 #ifdef IPXIP
222 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
223 ipxip_input, 0, ipxip_ctlinput, 0,
224 0,
225 0, 0, 0, 0,
226 &rip_usrreqs
227 },
228 #endif
229 #ifdef NSIP
230 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
231 idpip_input, 0, nsip_ctlinput, 0,
232 0,
233 0, 0, 0, 0,
234 &rip_usrreqs
235 },
236 #endif
237 #ifdef PIM
238 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
239 pim_input, 0, 0, rip_ctloutput,
240 0,
241 0, 0, 0, 0,
242 &rip_usrreqs
243 },
244 #endif
245 /* raw wildcard */
246 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
247 rip_input, 0, 0, rip_ctloutput,
248 0,
249 rip_init, 0, 0, 0,
250 &rip_usrreqs
251 },
252 };
253
254 extern int in_inithead __P((void **, int));
255
256 struct domain inetdomain =
257 { AF_INET, "internet", 0, 0, 0,
258 (struct protosw *)inetsw,
259 (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
260 in_inithead, 32, sizeof(struct sockaddr_in)
261 };
262
263 DOMAIN_SET(inet);
264
265 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
266 "Internet Family");
267
268 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
269 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
270 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
271 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
272 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
273 #ifdef FAST_IPSEC
274 /* XXX no protocol # to use, pick something "reserved" */
275 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC");
276 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH");
277 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP");
278 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP");
279 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP");
280 #else
281 #ifdef IPSEC
282 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
283 #endif /* IPSEC */
284 #endif /* !FAST_IPSEC */
285 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
286 #ifdef IPDIVERT
287 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT");
288 #endif
289 #ifdef PIM
290 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM");
291 #endif
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