1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#include "opt_mrouting.h"
34#include "opt_ipsec.h"
35#include "opt_inet.h"
36#include "opt_inet6.h"
37#include "opt_sctp.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/malloc.h>
43#include <sys/socket.h>
44#include <sys/domain.h>
45#include <sys/proc.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/if_var.h>
52#include <netinet/in.h>
53#include <netinet/in_var.h>
54
55/*
56 * While this file provides the domain and protocol switch tables for IPv4, it
57 * also provides the sysctl node declarations for net.inet.* often shared with
58 * IPv6 for common features or by upper layer protocols.  In case of no IPv4
59 * support compile out everything but these sysctl nodes.
60 */
61#ifdef INET
62/* netinet/raw_ip.c */
63extern struct protosw rip_protosw;
64/* netinet/udp_usrreq.c */
65extern struct protosw udp_protosw, udplite_protosw;
66/* netinet/tcp_usrreq.c */
67extern struct protosw tcp_protosw;
68/* netinet/sctp_usrreq.c */
69extern struct protosw sctp_seqpacket_protosw, sctp_stream_protosw;
70
71FEATURE(inet, "Internet Protocol version 4");
72
73struct domain inetdomain = {
74	.dom_family =		AF_INET,
75	.dom_name =		"internet",
76	.dom_rtattach =		in_inithead,
77#ifdef VIMAGE
78	.dom_rtdetach =		in_detachhead,
79#endif
80	.dom_ifattach =		in_domifattach,
81	.dom_ifdetach =		in_domifdetach,
82	.dom_nprotosw =		14,
83	.dom_protosw = {
84		&tcp_protosw,
85		&udp_protosw,
86#ifdef SCTP
87		&sctp_seqpacket_protosw,
88		&sctp_stream_protosw,
89#else
90		NULL, NULL,
91#endif
92		&udplite_protosw,
93		&rip_protosw,
94		/* Spacer 8 times for loadable protocols. XXXGL: why 8? */
95		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
96	},
97};
98
99DOMAIN_SET(inet);
100#endif /* INET */
101
102SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
103    "Internet Family");
104
105SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
106    "IP");
107SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
108    "ICMP");
109SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
110    "UDP");
111SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
112    "TCP");
113#if defined(SCTP) || defined(SCTP_SUPPORT)
114SYSCTL_NODE(_net_inet, IPPROTO_SCTP, sctp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
115    "SCTP");
116#endif
117SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
118    "IGMP");
119#if defined(IPSEC) || defined(IPSEC_SUPPORT)
120/* XXX no protocol # to use, pick something "reserved" */
121SYSCTL_NODE(_net_inet, 253, ipsec, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
122    "IPSEC");
123SYSCTL_NODE(_net_inet, IPPROTO_AH, ah, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
124    "AH");
125SYSCTL_NODE(_net_inet, IPPROTO_ESP, esp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
126    "ESP");
127SYSCTL_NODE(_net_inet, IPPROTO_IPCOMP, ipcomp, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
128    "IPCOMP");
129SYSCTL_NODE(_net_inet, IPPROTO_IPIP, ipip, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
130    "IPIP");
131#endif /* IPSEC */
132SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
133    "RAW");
134SYSCTL_NODE(_net_inet, OID_AUTO, accf, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
135    "Accept filters");
136