in_proto.c revision 55009 
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 55009 1999-12-22 19:13:38Z shin $
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
65#include <netinet/ipprotosw.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#endif /* IPSEC */
78
79#include "gif.h"
80#if NGIF > 0
81#include <netinet/in_gif.h>
82#endif
83
84#ifdef IPXIP
85#include <netipx/ipx_ip.h>
86#endif
87
88#ifdef NSIP
89#include <netns/ns.h>
90#include <netns/ns_if.h>
91#endif
92
93extern	struct domain inetdomain;
94static	struct pr_usrreqs nousrreqs;
95
96struct ipprotosw inetsw[] = {
97{ 0,		&inetdomain,	0,		0,
98  0,		0,		0,		0,
99  0,
100  ip_init,	0,		ip_slowtimo,	ip_drain,
101  &nousrreqs
102},
103{ SOCK_DGRAM,	&inetdomain,	IPPROTO_UDP,	PR_ATOMIC|PR_ADDR,
104  udp_input,	0,		udp_ctlinput,	ip_ctloutput,
105  0,
106  udp_init,	0,		0,		0,
107  &udp_usrreqs
108},
109{ SOCK_STREAM,	&inetdomain,	IPPROTO_TCP,
110	PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
111  tcp_input,	0,		tcp_ctlinput,	tcp_ctloutput,
112  0,
113  tcp_init,	0,		tcp_slowtimo,	tcp_drain,
114  &tcp_usrreqs
115},
116{ SOCK_RAW,	&inetdomain,	IPPROTO_RAW,	PR_ATOMIC|PR_ADDR,
117  rip_input,	0,		rip_ctlinput,	rip_ctloutput,
118  0,
119  0,		0,		0,		0,
120  &rip_usrreqs
121},
122{ SOCK_RAW,	&inetdomain,	IPPROTO_ICMP,	PR_ATOMIC|PR_ADDR,
123  icmp_input,	0,		0,		rip_ctloutput,
124  0,
125  0,		0,		0,		0,
126  &rip_usrreqs
127},
128{ SOCK_RAW,	&inetdomain,	IPPROTO_IGMP,	PR_ATOMIC|PR_ADDR,
129  igmp_input,	0,		0,		rip_ctloutput,
130  0,
131  igmp_init,	igmp_fasttimo,	igmp_slowtimo,	0,
132  &rip_usrreqs
133},
134{ SOCK_RAW,	&inetdomain,	IPPROTO_RSVP,	PR_ATOMIC|PR_ADDR,
135  rsvp_input,	0,		0,		rip_ctloutput,
136  0,
137  0,		0,		0,		0,
138  &rip_usrreqs
139},
140#ifdef IPSEC
141{ SOCK_RAW,	&inetdomain,	IPPROTO_AH,	PR_ATOMIC|PR_ADDR,
142  ah4_input,	0,	 	0,		0,
143  0,
144  0,		0,		0,		0,
145  &nousrreqs
146},
147#ifdef IPSEC_ESP
148{ SOCK_RAW,	&inetdomain,	IPPROTO_ESP,	PR_ATOMIC|PR_ADDR,
149  esp4_input,	0,	 	0,		0,
150  0,
151  0,		0,		0,		0,
152  &nousrreqs
153},
154#endif
155#endif /* IPSEC */
156#if NGIF > 0
157{ SOCK_RAW,	&inetdomain,	IPPROTO_IPV4,	PR_ATOMIC|PR_ADDR,
158  in_gif_input,	0,	 	0,		0,
159  0,
160  0,		0,		0,		0,
161  &nousrreqs
162},
163# ifdef INET6
164{ SOCK_RAW,	&inetdomain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR,
165  in_gif_input,	0,	 	0,		0,
166  0,
167  0,		0,		0,		0,
168  &nousrreqs
169},
170#endif
171#else /*NGIF*/
172{ SOCK_RAW,	&inetdomain,	IPPROTO_IPIP,	PR_ATOMIC|PR_ADDR,
173  ipip_input,	0,	 	0,		rip_ctloutput,
174  0,
175  0,		0,		0,		0,
176  &rip_usrreqs
177},
178#endif /*NGIF*/
179#ifdef IPDIVERT
180{ SOCK_RAW,	&inetdomain,	IPPROTO_DIVERT,	PR_ATOMIC|PR_ADDR,
181  div_input,	0,	 	0,		ip_ctloutput,
182  0,
183  div_init,	0,		0,		0,
184  &div_usrreqs,
185},
186#endif
187#ifdef TPIP
188{ SOCK_SEQPACKET,&inetdomain,	IPPROTO_TP,	PR_CONNREQUIRED|PR_WANTRCVD,
189  tpip_input,	0,		tpip_ctlinput,	tp_ctloutput,
190  tp_usrreq,
191  tp_init,	0,		tp_slowtimo,	tp_drain,
192},
193#endif
194/* EON (ISO CLNL over IP) */
195#ifdef EON
196{ SOCK_RAW,	&inetdomain,	IPPROTO_EON,	0,
197  eoninput,	0,		eonctlinput,		0,
198  0,
199  eonprotoinit,	0,		0,		0,
200},
201#endif
202#ifdef IPXIP
203{ SOCK_RAW,	&inetdomain,	IPPROTO_IDP,	PR_ATOMIC|PR_ADDR,
204  ipxip_input,	0,		ipxip_ctlinput,	0,
205  0,
206  0,		0,		0,		0,
207  &rip_usrreqs
208},
209#endif
210#ifdef NSIP
211{ SOCK_RAW,	&inetdomain,	IPPROTO_IDP,	PR_ATOMIC|PR_ADDR,
212  idpip_input,	0,		nsip_ctlinput,	0,
213  0,
214  0,		0,		0,		0,
215  &rip_usrreqs
216},
217#endif
218	/* raw wildcard */
219{ SOCK_RAW,	&inetdomain,	0,		PR_ATOMIC|PR_ADDR,
220  rip_input,	0,		0,		rip_ctloutput,
221  0,
222  rip_init,	0,		0,		0,
223  &rip_usrreqs
224},
225};
226
227extern int in_inithead __P((void **, int));
228
229struct domain inetdomain =
230    { AF_INET, "internet", 0, 0, 0,
231      (struct protosw *)inetsw,
232      (struct protosw *)&inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
233      in_inithead, 32, sizeof(struct sockaddr_in)
234    };
235
236DOMAIN_SET(inet);
237
238SYSCTL_NODE(_net,      PF_INET,		inet,	CTLFLAG_RW, 0,
239	"Internet Family");
240
241SYSCTL_NODE(_net_inet, IPPROTO_IP,	ip,	CTLFLAG_RW, 0,	"IP");
242SYSCTL_NODE(_net_inet, IPPROTO_ICMP,	icmp,	CTLFLAG_RW, 0,	"ICMP");
243SYSCTL_NODE(_net_inet, IPPROTO_UDP,	udp,	CTLFLAG_RW, 0,	"UDP");
244SYSCTL_NODE(_net_inet, IPPROTO_TCP,	tcp,	CTLFLAG_RW, 0,	"TCP");
245SYSCTL_NODE(_net_inet, IPPROTO_IGMP,	igmp,	CTLFLAG_RW, 0,	"IGMP");
246#ifdef IPSEC
247SYSCTL_NODE(_net_inet, IPPROTO_AH,	ipsec,	CTLFLAG_RW, 0,	"IPSEC");
248#endif /* IPSEC */
249SYSCTL_NODE(_net_inet, IPPROTO_RAW,	raw,	CTLFLAG_RW, 0,	"RAW");
250#ifdef IPDIVERT
251SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,	div,	CTLFLAG_RW, 0,	"DIVERT");
252#endif
253
254