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 * $FreeBSD$
35 */
36
37 #include "opt_ipdivert.h"
38 #include "opt_ipx.h"
39
40 #include <sys/param.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
43 #include <sys/domain.h>
44 #include <sys/protosw.h>
45 #include <sys/sysctl.h>
46
47 #include <net/if.h>
48 #include <net/route.h>
49
50 #include <netinet/in.h>
51 #include <netinet/in_systm.h>
52 #include <netinet/ip.h>
53 #include <netinet/ip_var.h>
54 #include <netinet/ip_icmp.h>
55 #include <netinet/igmp_var.h>
56 #include <netinet/tcp.h>
57 #include <netinet/tcp_timer.h>
58 #include <netinet/tcp_var.h>
59 #include <netinet/udp.h>
60 #include <netinet/udp_var.h>
61 /*
62 * TCP/IP protocol family: IP, ICMP, UDP, TCP.
63 */
64
65 #ifdef IPXIP
66 #include <netipx/ipx_ip.h>
67 #endif
68
69 #ifdef NSIP
70 #include <netns/ns.h>
71 #include <netns/ns_if.h>
72 #endif
73
74 extern struct domain inetdomain;
75 static struct pr_usrreqs nousrreqs;
76
77 struct protosw inetsw[] = {
78 { 0, &inetdomain, 0, 0,
79 0, 0, 0, 0,
80 0,
81 ip_init, 0, ip_slowtimo, ip_drain,
82 &nousrreqs
83 },
84 { SOCK_DGRAM, &inetdomain, IPPROTO_UDP, PR_ATOMIC|PR_ADDR,
85 udp_input, 0, udp_ctlinput, ip_ctloutput,
86 0,
87 udp_init, 0, 0, 0,
88 &udp_usrreqs
89 },
90 { SOCK_STREAM, &inetdomain, IPPROTO_TCP,
91 PR_CONNREQUIRED|PR_IMPLOPCL|PR_WANTRCVD,
92 tcp_input, 0, tcp_ctlinput, tcp_ctloutput,
93 0,
94 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain,
95 &tcp_usrreqs
96 },
97 { SOCK_RAW, &inetdomain, IPPROTO_RAW, PR_ATOMIC|PR_ADDR,
98 rip_input, 0, rip_ctlinput, rip_ctloutput,
99 0,
100 0, 0, 0, 0,
101 &rip_usrreqs
102 },
103 { SOCK_RAW, &inetdomain, IPPROTO_ICMP, PR_ATOMIC|PR_ADDR,
104 icmp_input, 0, 0, rip_ctloutput,
105 0,
106 0, 0, 0, 0,
107 &rip_usrreqs
108 },
109 { SOCK_RAW, &inetdomain, IPPROTO_IGMP, PR_ATOMIC|PR_ADDR,
110 igmp_input, 0, 0, rip_ctloutput,
111 0,
112 igmp_init, igmp_fasttimo, igmp_slowtimo, 0,
113 &rip_usrreqs
114 },
115 { SOCK_RAW, &inetdomain, IPPROTO_RSVP, PR_ATOMIC|PR_ADDR,
116 rsvp_input, 0, 0, rip_ctloutput,
117 0,
118 0, 0, 0, 0,
119 &rip_usrreqs
120 },
121 { SOCK_RAW, &inetdomain, IPPROTO_IPIP, PR_ATOMIC|PR_ADDR,
122 ipip_input, 0, 0, rip_ctloutput,
123 0,
124 0, 0, 0, 0,
125 &rip_usrreqs
126 },
127 #ifdef IPDIVERT
128 { SOCK_RAW, &inetdomain, IPPROTO_DIVERT, PR_ATOMIC|PR_ADDR,
129 div_input, 0, 0, ip_ctloutput,
130 0,
131 div_init, 0, 0, 0,
132 &div_usrreqs,
133 },
134 #endif
135 #ifdef TPIP
136 { SOCK_SEQPACKET,&inetdomain, IPPROTO_TP, PR_CONNREQUIRED|PR_WANTRCVD,
137 tpip_input, 0, tpip_ctlinput, tp_ctloutput,
138 tp_usrreq,
139 tp_init, 0, tp_slowtimo, tp_drain,
140 },
141 #endif
142 /* EON (ISO CLNL over IP) */
143 #ifdef EON
144 { SOCK_RAW, &inetdomain, IPPROTO_EON, 0,
145 eoninput, 0, eonctlinput, 0,
146 0,
147 eonprotoinit, 0, 0, 0,
148 },
149 #endif
150 #ifdef IPXIP
151 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR,
152 ipxip_input, 0, ipxip_ctlinput, 0,
153 0,
154 0, 0, 0, 0,
155 &rip_usrreqs
156 },
157 #endif
158 #ifdef NSIP
159 { SOCK_RAW, &inetdomain, IPPROTO_IDP, PR_ATOMIC|PR_ADDR,
160 idpip_input, 0, nsip_ctlinput, 0,
161 0,
162 0, 0, 0, 0,
163 &rip_usrreqs
164 },
165 #endif
166 /* raw wildcard */
167 { SOCK_RAW, &inetdomain, 0, PR_ATOMIC|PR_ADDR,
168 rip_input, 0, 0, rip_ctloutput,
169 0,
170 rip_init, 0, 0, 0,
171 &rip_usrreqs
172 },
173 };
174
175 extern int in_inithead __P((void **, int));
176
177 struct domain inetdomain =
178 { AF_INET, "internet", 0, 0, 0,
179 inetsw, &inetsw[sizeof(inetsw)/sizeof(inetsw[0])], 0,
180 in_inithead, 32, sizeof(struct sockaddr_in)
181 };
182
183 DOMAIN_SET(inet);
184
185 SYSCTL_NODE(_net, PF_INET, inet, CTLFLAG_RW, 0,
186 "Internet Family");
187
188 SYSCTL_NODE(_net_inet, IPPROTO_IP, ip, CTLFLAG_RW, 0, "IP");
189 SYSCTL_NODE(_net_inet, IPPROTO_ICMP, icmp, CTLFLAG_RW, 0, "ICMP");
190 SYSCTL_NODE(_net_inet, IPPROTO_UDP, udp, CTLFLAG_RW, 0, "UDP");
191 SYSCTL_NODE(_net_inet, IPPROTO_TCP, tcp, CTLFLAG_RW, 0, "TCP");
192 SYSCTL_NODE(_net_inet, IPPROTO_IGMP, igmp, CTLFLAG_RW, 0, "IGMP");
193 SYSCTL_NODE(_net_inet, IPPROTO_RAW, raw, CTLFLAG_RW, 0, "RAW");
194 #ifdef IPDIVERT
195 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT, div, CTLFLAG_RW, 0, "DIVERT");
196 #endif
197
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