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: releng/5.1/sys/netinet/in_proto.c 111926 2003-03-05 19:24:24Z peter $
35 */
36
37 #include "opt_ipdivert.h"
38 #include "opt_ipx.h"
39 #include "opt_ipsec.h"
40 #include "opt_inet6.h"
41
42 #include <sys/param.h>
43 #include <sys/systm.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 #include <netinet/tcp.h>
61 #include <netinet/tcp_timer.h>
62 #include <netinet/tcp_var.h>
63 #include <netinet/udp.h>
64 #include <netinet/udp_var.h>
65 #include <netinet/ip_encap.h>
66
67 /*
68 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
69 */
70
71 #ifdef IPSEC
72 #include <netinet6/ipsec.h>
73 #include <netinet6/ah.h>
74 #ifdef IPSEC_ESP
75 #include <netinet6/esp.h>
76 #endif
77 #include <netinet6/ipcomp.h>
78 #endif /* IPSEC */
79
80 #ifdef FAST_IPSEC
81 #include <netipsec/ipsec.h>
82 #endif /* FAST_IPSEC */
83
84 #ifdef IPXIP
85 #include <netipx/ipx_ip.h>
86 #endif
87
88 extern struct domain inetdomain;
89 static struct pr_usrreqs nousrreqs;
90
91 struct protosw inetsw[] = {
92 { 0, &inetdomain, 0, 0,
93 0, 0, 0, 0,
94 0,
95 ip_init, 0, ip_slowtimo, ip_drain,
96 &nousrreqs
97 },
98 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
99 udp_input, 0, udp_ctlinput, ip_ctloutput,
100 0,
101 udp_init, 0, 0, 0,
102 &udp_usrreqs
103 },
104 { SOCK_STREAM, &inetdomain, IPPROTO_TCP,
105 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
106 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
107 0,
108 tcp_init, 0, tcp_slowtimo, tcp_drain,
109 &tcp_usrreqs
110 },
111 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
112 rip_input, 0, rip_ctlinput, rip_ctloutput,
113 0,
114 0, 0, 0, 0,
115 &rip_usrreqs
116 },
117 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
118 icmp_input, 0, 0, rip_ctloutput,
119 0,
120 0, 0, 0, 0,
121 &rip_usrreqs
122 },
123 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
124 igmp_input, 0, 0, rip_ctloutput,
125 0,
126 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
127 &rip_usrreqs
128 },
129 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
130 rsvp_input, 0, 0, rip_ctloutput,
131 0,
132 0, 0, 0, 0,
133 &rip_usrreqs
134 },
135 #ifdef IPSEC
136 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
137 ah4_input, 0, 0, 0,
138 0,
139 0, 0, 0, 0,
140 &nousrreqs
141 },
142 #ifdef IPSEC_ESP
143 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
144 esp4_input, 0, 0, 0,
145 0,
146 0, 0, 0, 0,
147 &nousrreqs
148 },
149 #endif
150 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
151 ipcomp4_input, 0, 0, 0,
152 0,
153 0, 0, 0, 0,
154 &nousrreqs
155 },
156 #endif /* IPSEC */
157 #ifdef FAST_IPSEC
158 { SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR,
159 ah4_input, 0, 0, 0,
160 0,
161 0, 0, 0, 0,
162 &nousrreqs
163 },
164 { SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR,
165 esp4_input, 0, 0, 0,
166 0,
167 0, 0, 0, 0,
168 &nousrreqs
169 },
170 { SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR,
171 ipcomp4_input, 0, 0, 0,
172 0,
173 0, 0, 0, 0,
174 &nousrreqs
175 },
176 #endif /* FAST_IPSEC */
177 { SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
178 encap4_input, 0, 0, rip_ctloutput,
179 0,
180 encap_init, 0, 0, 0,
181 &rip_usrreqs
182 },
183 { SOCK_RAW, &inetdomain, IPPROTO_MOBILE, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
184 encap4_input, 0, 0, rip_ctloutput,
185 0,
186 encap_init, 0, 0, 0,
187 &rip_usrreqs
188 },
189 { SOCK_RAW, &inetdomain, IPPROTO_GRE, 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 # ifdef INET6
196 { SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
197 encap4_input, 0, 0, rip_ctloutput,
198 0,
199 encap_init, 0, 0, 0,
200 &rip_usrreqs
201 },
202 #endif
203 #ifdef IPDIVERT
204 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
205 div_input, 0, 0, ip_ctloutput,
206 0,
207 div_init, 0, 0, 0,
208 &div_usrreqs,
209 },
210 #endif
211 #ifdef IPXIP
212 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
213 ipxip_input, 0, ipxip_ctlinput, 0,
214 0,
215 0, 0, 0, 0,
216 &rip_usrreqs
217 },
218 #endif
219 /* raw wildcard */
220 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
221 rip_input, 0, 0, rip_ctloutput,
222 0,
223 rip_init, 0, 0, 0,
224 &rip_usrreqs
225 },
226 };
227
228 extern int in_inithead(void **, int);
229
230 struct domain inetdomain =
231 { AF_INET, "internet", 0, 0, 0,
232 inetsw,
233 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
234 in_inithead, 32, sizeof(struct sockaddr_in)
235 };
236
237 DOMAIN_SET(inet);
238
239 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
240 "Internet Family");
241
242 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
243 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
244 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
245 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
246 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
247 #ifdef FAST_IPSEC
248 /* XXX no protocol # to use, pick something "reserved" */
249 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC");
250 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH");
251 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP");
252 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP");
253 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP");
254 #else
255 #ifdef IPSEC
256 SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
257 #endif /* IPSEC */
258 #endif /* !FAST_IPSEC */
259 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
260 #ifdef IPDIVERT
261 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT");
262 #endif
263
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