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1c79356b 1/*
5d5c5d0d
A
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
8f6c56a5 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b 5 *
8f6c56a5
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6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
8ad349bb 24 * limitations under the License.
8f6c56a5
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25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b
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27 */
28/*
29 * Copyright (c) 1982, 1986, 1993
30 * The Regents of the University of California. All rights reserved.
31 *
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
34 * are met:
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Berkeley and its contributors.
44 * 4. 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
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63#include <sys/param.h>
64#include <sys/kernel.h>
65#include <sys/socket.h>
66#include <sys/domain.h>
67#include <sys/protosw.h>
9bccf70c 68#include <sys/queue.h>
1c79356b 69#include <sys/sysctl.h>
91447636 70#include <sys/mbuf.h>
1c79356b 71
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72#include <net/if.h>
73#include <net/route.h>
74
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_var.h>
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79#include <netinet/ip_icmp.h>
80#include <netinet/igmp_var.h>
81#include <netinet/tcp.h>
82#include <netinet/tcp_timer.h>
83#include <netinet/tcp_var.h>
84#include <netinet/tcpip.h>
85#include <netinet/udp.h>
86#include <netinet/udp_var.h>
9bccf70c 87#include <netinet/ip_encap.h>
91447636 88#include <netinet/ip_divert.h>
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89
90
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91/*
92 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
93 */
94
95#if IPSEC
96#include <netinet6/ipsec.h>
97#include <netinet6/ah.h>
98#if IPSEC_ESP
99#include <netinet6/esp.h>
100#endif
101#include <netinet6/ipcomp.h>
102#endif /* IPSEC */
103
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104#if IPXIP
105#include <netipx/ipx_ip.h>
106#endif
107
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108extern struct domain inetdomain;
109static struct pr_usrreqs nousrreqs;
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110extern struct pr_usrreqs icmp_dgram_usrreqs;
111extern int icmp_dgram_ctloutput(struct socket *, struct sockopt *);
1c79356b 112
91447636 113
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114struct protosw inetsw[] = {
115{ 0, &inetdomain, 0, 0,
116 0, 0, 0, 0,
117 0,
118 ip_init, 0, ip_slowtimo, ip_drain,
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119 0,
120 &nousrreqs,
121 0, 0, 0, { 0, 0 }, 0, { 0 }
1c79356b 122},
91447636 123{ SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR|PR_PROTOLOCK|PR_PCBLOCK,
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124 udp_input, 0, udp_ctlinput, ip_ctloutput,
125 0,
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126 udp_init, 0, udp_slowtimo, 0,
127 0,
128 &udp_usrreqs,
129 udp_lock, udp_unlock, udp_getlock, { 0, 0 }, 0, { 0 }
1c79356b 130},
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131{ SOCK_STREAM, &inetdomain, IPPROTO_TCP,
132 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD|PR_PCBLOCK|PR_PROTOLOCK|PR_DISPOSE,
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133 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
134 0,
135 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain,
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136 0,
137 &tcp_usrreqs,
138 tcp_lock, tcp_unlock, tcp_getlock, { 0, 0 }, 0, { 0 }
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139},
140{ SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
141 rip_input, 0, rip_ctlinput, rip_ctloutput,
142 0,
143 0, 0, 0, 0,
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144 0,
145 &rip_usrreqs,
146 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
1c79356b 147},
9bccf70c 148{ SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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149 icmp_input, 0, 0, rip_ctloutput,
150 0,
151 0, 0, 0, 0,
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152 0,
153 &rip_usrreqs,
154 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
1c79356b 155},
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156{ SOCK_DGRAM, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
157 icmp_input, 0, 0, icmp_dgram_ctloutput,
9bccf70c 158 0,
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159 0, 0, 0, 0,
160 0,
161 &icmp_dgram_usrreqs,
162 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
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163},
164{ SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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165 igmp_input, 0, 0, rip_ctloutput,
166 0,
167 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
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168 0,
169 &rip_usrreqs,
170 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
1c79356b 171},
9bccf70c 172{ SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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173 rsvp_input, 0, 0, rip_ctloutput,
174 0,
175 0, 0, 0, 0,
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176 0,
177 &rip_usrreqs,
178 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
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179},
180#if IPSEC
91447636 181{ SOCK_RAW, &inetdomain, IPPROTO_AH, PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
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182 ah4_input, 0, 0, 0,
183 0,
184 0, 0, 0, 0,
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185 0,
186 &nousrreqs,
187 0, 0, 0, { 0, 0 }, 0, { 0 }
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188},
189#if IPSEC_ESP
91447636 190{ SOCK_RAW, &inetdomain, IPPROTO_ESP, PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
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191 esp4_input, 0, 0, 0,
192 0,
193 0, 0, 0, 0,
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194 0,
195 &nousrreqs,
196 0, 0, 0, { 0, 0 }, 0, { 0 }
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197},
198#endif
91447636 199{ SOCK_RAW, &inetdomain, IPPROTO_IPCOMP, PR_ATOMIC|PR_ADDR|PR_PROTOLOCK,
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200 ipcomp4_input, 0, 0, 0,
201 0,
202 0, 0, 0, 0,
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203 0,
204 &nousrreqs,
205 0, 0, 0, { 0, 0 }, 0, { 0 }
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206},
207#endif /* IPSEC */
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208{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
209 encap4_input, 0, 0, rip_ctloutput,
210 0,
211 encap_init, 0, 0, 0,
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212 0,
213 &rip_usrreqs,
214 0, 0, 0, { 0, 0 }, 0, { 0 }
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215},
216# if INET6
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217{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
218 encap4_input, 0, 0, rip_ctloutput,
1c79356b 219 0,
9bccf70c 220 encap_init, 0, 0, 0,
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221 0,
222 &rip_usrreqs,
223 0, 0, 0, { 0, 0 }, 0, { 0 }
1c79356b 224},
9bccf70c 225#endif
1c79356b 226#if IPDIVERT
91447636 227{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR|PR_PCBLOCK,
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228 div_input, 0, 0, ip_ctloutput,
229 0,
230 div_init, 0, 0, 0,
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231 0,
232 &div_usrreqs,
233 div_lock, div_unlock, div_getlock, { 0, 0 }, 0, { 0 }
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234},
235#endif
1c79356b 236#if IPXIP
9bccf70c 237{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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238 ipxip_input, 0, ipxip_ctlinput, 0,
239 0,
240 0, 0, 0, 0,
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241 0,
242 &rip_usrreqs,
243 0, 0, 0, { 0, 0 }, 0, { 0 }
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244},
245#endif
246#if NSIP
9bccf70c 247{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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248 idpip_input, 0, nsip_ctlinput, 0,
249 0,
250 0, 0, 0, 0,
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251 0,
252 &rip_usrreqs,
253 0, 0, 0, { 0, 0 }, 0, { 0 }
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254},
255#endif
256 /* raw wildcard */
91447636 257{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
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258 rip_input, 0, 0, rip_ctloutput,
259 0,
260 rip_init, 0, 0, 0,
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261 0,
262 &rip_usrreqs,
263 0, rip_unlock, 0, { 0, 0 }, 0, { 0 }
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264},
265};
266
91447636 267extern int in_inithead(void **, int);
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268
269int in_proto_count = (sizeof (inetsw) / sizeof (struct protosw));
270
271extern void in_dinit(void);
272/* A routing init function, and a header size */
273struct domain inetdomain =
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274 { AF_INET,
275 "internet",
276 in_dinit,
277 0,
278 0,
279 inetsw,
280 0,
281 in_inithead,
282 32,
283 sizeof(struct sockaddr_in),
284 sizeof(struct tcpiphdr),
285 0,
286 0,
287 0,
288 { 0, 0}
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289 };
290
291DOMAIN_SET(inet);
292
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293SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
294 "Internet Family");
295
296SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
297SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
298SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
299SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
300SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
301#if IPSEC
302SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
303#endif /* IPSEC */
304SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
305#if IPDIVERT
306SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT");
307#endif
308