2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. 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.
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
29 * @(#)in_proto.c 8.2 (Berkeley) 2/9/95
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "opt_mrouting.h"
36 #include "opt_ipsec.h"
38 #include "opt_inet6.h"
40 #include "opt_mpath.h"
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/malloc.h>
46 #include <sys/socket.h>
47 #include <sys/domain.h>
49 #include <sys/protosw.h>
50 #include <sys/queue.h>
51 #include <sys/sysctl.h>
54 * While this file provides the domain and protocol switch tables for IPv4, it
55 * also provides the sysctl node declarations for net.inet.* often shared with
56 * IPv6 for common features or by upper layer protocols. In case of no IPv4
57 * support compile out everything but these sysctl nodes.
61 #include <net/if_var.h>
62 #include <net/route.h>
64 #include <net/radix_mpath.h>
69 #if defined(INET) || defined(INET6)
70 #include <netinet/in.h>
74 #include <netinet/in_systm.h>
75 #include <netinet/in_var.h>
76 #include <netinet/ip.h>
77 #include <netinet/ip_var.h>
78 #include <netinet/ip_icmp.h>
79 #include <netinet/igmp_var.h>
80 #include <netinet/tcp.h>
81 #include <netinet/tcp_timer.h>
82 #include <netinet/tcp_var.h>
83 #include <netinet/udp.h>
84 #include <netinet/udp_var.h>
85 #include <netinet/ip_encap.h>
88 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
91 static struct pr_usrreqs nousrreqs;
94 #include <netinet/in_pcb.h>
95 #include <netinet/sctp_pcb.h>
96 #include <netinet/sctp.h>
97 #include <netinet/sctp_var.h>
100 FEATURE(inet, "Internet Protocol version 4");
102 extern struct domain inetdomain;
104 /* Spacer for loadable protocols. */
105 #define IPPROTOSPACER \
107 .pr_domain = &inetdomain, \
108 .pr_protocol = PROTO_SPACER, \
109 .pr_usrreqs = &nousrreqs \
112 struct protosw inetsw[] = {
115 .pr_domain = &inetdomain,
116 .pr_protocol = IPPROTO_IP,
118 .pr_slowtimo = ip_slowtimo,
119 .pr_drain = ip_drain,
120 .pr_usrreqs = &nousrreqs
123 .pr_type = SOCK_DGRAM,
124 .pr_domain = &inetdomain,
125 .pr_protocol = IPPROTO_UDP,
126 .pr_flags = PR_ATOMIC|PR_ADDR,
127 .pr_input = udp_input,
128 .pr_ctlinput = udp_ctlinput,
129 .pr_ctloutput = udp_ctloutput,
131 .pr_usrreqs = &udp_usrreqs
134 .pr_type = SOCK_STREAM,
135 .pr_domain = &inetdomain,
136 .pr_protocol = IPPROTO_TCP,
137 .pr_flags = PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
138 .pr_input = tcp_input,
139 .pr_ctlinput = tcp_ctlinput,
140 .pr_ctloutput = tcp_ctloutput,
142 .pr_slowtimo = tcp_slowtimo,
143 .pr_drain = tcp_drain,
144 .pr_usrreqs = &tcp_usrreqs
148 .pr_type = SOCK_SEQPACKET,
149 .pr_domain = &inetdomain,
150 .pr_protocol = IPPROTO_SCTP,
151 .pr_flags = PR_WANTRCVD|PR_LASTHDR,
152 .pr_input = sctp_input,
153 .pr_ctlinput = sctp_ctlinput,
154 .pr_ctloutput = sctp_ctloutput,
155 .pr_init = sctp_init,
156 .pr_drain = sctp_drain,
157 .pr_usrreqs = &sctp_usrreqs
160 .pr_type = SOCK_STREAM,
161 .pr_domain = &inetdomain,
162 .pr_protocol = IPPROTO_SCTP,
163 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
164 .pr_input = sctp_input,
165 .pr_ctlinput = sctp_ctlinput,
166 .pr_ctloutput = sctp_ctloutput,
167 .pr_drain = sctp_drain,
168 .pr_usrreqs = &sctp_usrreqs
172 .pr_type = SOCK_DGRAM,
173 .pr_domain = &inetdomain,
174 .pr_protocol = IPPROTO_UDPLITE,
175 .pr_flags = PR_ATOMIC|PR_ADDR,
176 .pr_input = udp_input,
177 .pr_ctlinput = udplite_ctlinput,
178 .pr_ctloutput = udp_ctloutput,
179 .pr_init = udplite_init,
180 .pr_usrreqs = &udp_usrreqs
184 .pr_domain = &inetdomain,
185 .pr_protocol = IPPROTO_RAW,
186 .pr_flags = PR_ATOMIC|PR_ADDR,
187 .pr_input = rip_input,
188 .pr_ctlinput = rip_ctlinput,
189 .pr_ctloutput = rip_ctloutput,
190 .pr_usrreqs = &rip_usrreqs
194 .pr_domain = &inetdomain,
195 .pr_protocol = IPPROTO_ICMP,
196 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
197 .pr_input = icmp_input,
198 .pr_ctloutput = rip_ctloutput,
199 .pr_usrreqs = &rip_usrreqs
203 .pr_domain = &inetdomain,
204 .pr_protocol = IPPROTO_IGMP,
205 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
206 .pr_input = igmp_input,
207 .pr_ctloutput = rip_ctloutput,
208 .pr_fasttimo = igmp_fasttimo,
209 .pr_slowtimo = igmp_slowtimo,
210 .pr_usrreqs = &rip_usrreqs
214 .pr_domain = &inetdomain,
215 .pr_protocol = IPPROTO_RSVP,
216 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
217 .pr_input = rsvp_input,
218 .pr_ctloutput = rip_ctloutput,
219 .pr_usrreqs = &rip_usrreqs
223 .pr_domain = &inetdomain,
224 .pr_protocol = IPPROTO_IPV4,
225 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
226 .pr_input = encap4_input,
227 .pr_ctloutput = rip_ctloutput,
228 .pr_init = encap_init,
229 .pr_usrreqs = &rip_usrreqs
233 .pr_domain = &inetdomain,
234 .pr_protocol = IPPROTO_MOBILE,
235 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
236 .pr_input = encap4_input,
237 .pr_ctloutput = rip_ctloutput,
238 .pr_init = encap_init,
239 .pr_usrreqs = &rip_usrreqs
243 .pr_domain = &inetdomain,
244 .pr_protocol = IPPROTO_ETHERIP,
245 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
246 .pr_input = encap4_input,
247 .pr_ctloutput = rip_ctloutput,
248 .pr_init = encap_init,
249 .pr_usrreqs = &rip_usrreqs
253 .pr_domain = &inetdomain,
254 .pr_protocol = IPPROTO_GRE,
255 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
256 .pr_input = encap4_input,
257 .pr_ctloutput = rip_ctloutput,
258 .pr_init = encap_init,
259 .pr_usrreqs = &rip_usrreqs
264 .pr_domain = &inetdomain,
265 .pr_protocol = IPPROTO_IPV6,
266 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
267 .pr_input = encap4_input,
268 .pr_ctloutput = rip_ctloutput,
269 .pr_init = encap_init,
270 .pr_usrreqs = &rip_usrreqs
275 .pr_domain = &inetdomain,
276 .pr_protocol = IPPROTO_PIM,
277 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
278 .pr_input = encap4_input,
279 .pr_ctloutput = rip_ctloutput,
280 .pr_usrreqs = &rip_usrreqs
282 /* Spacer n-times for loadable protocols. */
294 .pr_domain = &inetdomain,
295 .pr_flags = PR_ATOMIC|PR_ADDR,
296 .pr_input = rip_input,
297 .pr_ctloutput = rip_ctloutput,
299 .pr_usrreqs = &rip_usrreqs
303 extern int in_inithead(void **, int);
304 extern int in_detachhead(void **, int);
306 struct domain inetdomain = {
307 .dom_family = AF_INET,
308 .dom_name = "internet",
309 .dom_protosw = inetsw,
310 .dom_protoswNPROTOSW = &inetsw[nitems(inetsw)],
312 .dom_rtattach = rn4_mpath_inithead,
314 .dom_rtattach = in_inithead,
317 .dom_rtdetach = in_detachhead,
319 .dom_ifattach = in_domifattach,
320 .dom_ifdetach = in_domifdetach
323 VNET_DOMAIN_SET(inet);
326 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
329 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
330 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
331 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
332 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
334 SYSCTL_NODE(_net_inet, IPPROTO_SCTP, sctp, CTLFLAG_RW, 0, "SCTP");
336 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
337 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
338 /* XXX no protocol # to use, pick something "reserved" */
339 SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW, 0, "IPSEC");
340 SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW, 0, "AH");
341 SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW, 0, "ESP");
342 SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW, 0, "IPCOMP");
343 SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW, 0, "IPIP");
345 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
346 SYSCTL_NODE(_net_inet, OID_AUTO, accf, CTLFLAG_RW, 0,