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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95
30 * $FreeBSD: releng/5.4/sys/netinet/in_proto.c 145335 2005-04-20 19:11:07Z cvs2svn $
31 */
32
33 #include "opt_ipdivert.h"
34 #include "opt_ipx.h"
35 #include "opt_mrouting.h"
36 #include "opt_ipsec.h"
37 #include "opt_inet6.h"
38 #include "opt_pf.h"
39 #include "opt_carp.h"
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/socket.h>
45 #include <sys/domain.h>
46 #include <sys/protosw.h>
47 #include <sys/queue.h>
48 #include <sys/sysctl.h>
49
50 #include <net/if.h>
51 #include <net/route.h>
52
53 #include <netinet/in.h>
54 #include <netinet/in_systm.h>
55 #include <netinet/ip.h>
56 #include <netinet/ip_var.h>
57 #include <netinet/ip_icmp.h>
58 #include <netinet/ip_divert.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 /*
71 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
72 */
73
74 #ifdef IPSEC
75 #include <netinet6/ipsec.h>
76 #include <netinet6/ah.h>
77 #ifdef IPSEC_ESP
78 #include <netinet6/esp.h>
79 #endif
80 #include <netinet6/ipcomp.h>
81 #endif /* IPSEC */
82
83 #ifdef FAST_IPSEC
84 #include <netipsec/ipsec.h>
85 #endif /* FAST_IPSEC */
86
87 #ifdef IPXIP
88 #include <netipx/ipx_ip.h>
89 #endif
90
91 #ifdef DEV_PFSYNC
92 #include <net/pfvar.h>
93 #include <net/if_pfsync.h>
94 #endif
95
96 #ifdef DEV_CARP
97 #include <netinet/ip_carp.h>
98 #endif
99
100 extern struct domain inetdomain;
101 static struct pr_usrreqs nousrreqs;
102
103 struct protosw inetsw[] = {
104 { 0, &inetdomain, 0, 0,
105 0, 0, 0, 0,
106 0,
107 ip_init, 0, ip_slowtimo, ip_drain,
108 &nousrreqs
109 },
110 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
111 udp_input, 0, udp_ctlinput, ip_ctloutput,
112 0,
113 udp_init, 0, 0, 0,
114 &udp_usrreqs
115 },
116 { SOCK_STREAM, &inetdomain, IPPROTO_TCP,
117 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
118 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
119 0,
120 tcp_init, 0, tcp_slowtimo, tcp_drain,
121 &tcp_usrreqs
122 },
123 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
124 rip_input, 0, rip_ctlinput, rip_ctloutput,
125 0,
126 0, 0, 0, 0,
127 &rip_usrreqs
128 },
129 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
130 icmp_input, 0, 0, rip_ctloutput,
131 0,
132 0, 0, 0, 0,
133 &rip_usrreqs
134 },
135 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
136 igmp_input, 0, 0, rip_ctloutput,
137 0,
138 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
139 &rip_usrreqs
140 },
141 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
142 rsvp_input, 0, 0, rip_ctloutput,
143 0,
144 0, 0, 0, 0,
145 &rip_usrreqs
146 },
147 #ifdef IPSEC
148 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
149 ah4_input, 0, 0, 0,
150 0,
151 0, 0, 0, 0,
152 &nousrreqs
153 },
154 #ifdef IPSEC_ESP
155 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
156 esp4_input, 0, 0, 0,
157 0,
158 0, 0, 0, 0,
159 &nousrreqs
160 },
161 #endif
162 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
163 ipcomp4_input, 0, 0, 0,
164 0,
165 0, 0, 0, 0,
166 &nousrreqs
167 },
168 #endif /* IPSEC */
169 #ifdef FAST_IPSEC
170 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
171 ah4_input, 0, ah4_ctlinput, 0,
172 0,
173 0, 0, 0, 0,
174 &nousrreqs
175 },
176 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
177 esp4_input, 0, esp4_ctlinput, 0,
178 0,
179 0, 0, 0, 0,
180 &nousrreqs
181 },
182 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
183 ipcomp4_input, 0, 0, 0,
184 0,
185 0, 0, 0, 0,
186 &nousrreqs
187 },
188 #endif /* FAST_IPSEC */
189 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
190 encap4_input, 0, 0, rip_ctloutput,
191 0,
192 encap_init, 0, 0, 0,
193 &rip_usrreqs
194 },
195 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
196 encap4_input, 0, 0, rip_ctloutput,
197 0,
198 encap_init, 0, 0, 0,
199 &rip_usrreqs
200 },
201 { SOCK_RAW, &inetdomain, IPPROTO_GRE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
202 encap4_input, 0, 0, rip_ctloutput,
203 0,
204 encap_init, 0, 0, 0,
205 &rip_usrreqs
206 },
207 # ifdef INET6
208 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
209 encap4_input, 0, 0, rip_ctloutput,
210 0,
211 encap_init, 0, 0, 0,
212 &rip_usrreqs
213 },
214 #endif
215 #ifdef IPDIVERT
216 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
217 div_input, 0, div_ctlinput, ip_ctloutput,
218 0,
219 div_init, 0, 0, 0,
220 &div_usrreqs,
221 },
222 #endif
223 #ifdef IPXIP
224 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
225 ipxip_input, 0, ipxip_ctlinput, 0,
226 0,
227 0, 0, 0, 0,
228 &rip_usrreqs
229 },
230 #endif
231 #ifdef PIM
232 { SOCK_RAW, &inetdomain, IPPROTO_PIM, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
233 pim_input, 0, 0, rip_ctloutput,
234 0,
235 0, 0, 0, 0,
236 &rip_usrreqs
237 },
238 #endif /* PIM */
239 #ifdef DEV_PFSYNC
240 { SOCK_RAW, &inetdomain, IPPROTO_PFSYNC, PR_ATOMIC|PR_ADDR,
241 pfsync_input, 0, 0, rip_ctloutput,
242 0,
243 0, 0, 0, 0,
244 &rip_usrreqs
245 },
246 #endif /* DEV_PFSYNC */
247 #ifdef DEV_CARP
248 { SOCK_RAW, &inetdomain, IPPROTO_CARP, PR_ATOMIC|PR_ADDR,
249 carp_input, (pr_output_t*)rip_output, 0, rip_ctloutput,
250 0,
251 0, 0, 0, 0,
252 &rip_usrreqs
253 },
254 #endif /* DEV_CARP */
255 /* raw wildcard */
256 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
257 rip_input, 0, 0, rip_ctloutput,
258 0,
259 rip_init, 0, 0, 0,
260 &rip_usrreqs
261 },
262 };
263
264 extern int in_inithead(void **, int);
265
266 struct domain inetdomain =
267 { AF_INET, "internet", 0, 0, 0,
268 inetsw,
269 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
270 in_inithead, 32, sizeof(struct sockaddr_in)
271 };
272
273 DOMAIN_SET(inet);
274
275 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
276 "Internet Family");
277
278 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
279 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
280 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
281 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
282 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
283 #ifdef FAST_IPSEC
284 /* XXX no protocol # to use, pick something "reserved" */
285 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC");
286 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH");
287 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP");
288 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP");
289 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP");
290 #else
291 #ifdef IPSEC
292 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
293 #endif /* IPSEC */
294 #endif /* !FAST_IPSEC */
295 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
296 #ifdef IPDIVERT
297 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT");
298 #endif
299 #ifdef PIM
300 SYSCTL_NODE(_net_inet, IPPROTO_PIM, pim, CTLFLAG_RW, 0, "PIM");
301 #endif
302 #ifdef DEV_CARP
303 SYSCTL_NODE(_net_inet, IPPROTO_CARP, carp, CTLFLAG_RW, 0, "CARP");
304 #endif
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