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: head/sys/netinet/in_proto.c 82884 2001-09-03 20:03:55Z julian $
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/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/igmp_var.h>
59#include <netinet/tcp.h>
60#include <netinet/tcp_timer.h>
61#include <netinet/tcp_var.h>
62#include <netinet/udp.h>
63#include <netinet/udp_var.h>
64#include <netinet/ip_encap.h>
65
66/*
67 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
68 */
69
70#ifdef IPSEC
71#include <netinet6/ipsec.h>
72#include <netinet6/ah.h>
73#ifdef IPSEC_ESP
74#include <netinet6/esp.h>
75#endif
76#include <netinet6/ipcomp.h>
77#endif /* IPSEC */
78
79#ifdef IPXIP
80#include <netipx/ipx_ip.h>
81#endif
82
83#ifdef NSIP
84#include <netns/ns.h>
85#include <netns/ns_if.h>
86#endif
87
88extern struct domain inetdomain;
89static struct pr_usrreqs nousrreqs;
90
91struct 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{ SOCK_RAW, &inetdomain, IPPROTO_IPV4, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
158 encap4_input, 0, 0, rip_ctloutput,
159 0,
160 encap_init, 0, 0, 0,
161 &rip_usrreqs
162},
163# ifdef INET6
164{ SOCK_RAW, &inetdomain, IPPROTO_IPV6, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
165 encap4_input, 0, 0, rip_ctloutput,
166 0,
167 encap_init, 0, 0, 0,
168 &rip_usrreqs
169},
170#endif
171#ifdef IPDIVERT
172{ SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
173 div_input, 0, 0, ip_ctloutput,
174 0,
175 div_init, 0, 0, 0,
176 &div_usrreqs,
177},
178#endif
179#ifdef IPXIP
180{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
181 ipxip_input, 0, ipxip_ctlinput, 0,
182 0,
183 0, 0, 0, 0,
184 &rip_usrreqs
185},
186#endif
187#ifdef NSIP
188{ SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR|PR_LASTHDR,
189 idpip_input, 0, nsip_ctlinput, 0,
190 0,
191 0, 0, 0, 0,
192 &rip_usrreqs
193},
194#endif
195 /* raw wildcard */
196{ SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
197 rip_input, 0, 0, rip_ctloutput,
198 0,
199 rip_init, 0, 0, 0,
200 &rip_usrreqs
201},
202};
203
204extern int in_inithead __P((void **, int));
205
206struct domain inetdomain =
207 { AF_INET, "internet", 0, 0, 0,
208 inetsw,
209 &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
210 in_inithead, 32, sizeof(struct sockaddr_in)
211 };
212
213DOMAIN_SET(inet);
214
215SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
216 "Internet Family");
217
218SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
219SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
220SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
221SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
222SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
223#ifdef IPSEC
224SYSCTL_NODE(_net_inet, IPPROTO_AH, ipsec, CTLFLAG_RW, 0, "IPSEC");
225#endif /* IPSEC */
226SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
227#ifdef IPDIVERT
228SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, divert, CTLFLAG_RW, 0, "DIVERT");
229#endif
230