drm - No need to protect a callout struct from MP accesses.
[dragonfly.git] / sys / netinet / in_proto.c
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. 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.
16  *
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
27  * SUCH DAMAGE.
28  *
29  *      @(#)in_proto.c  8.2 (Berkeley) 2/9/95
30  * $FreeBSD: src/sys/netinet/in_proto.c,v 1.53.2.7 2003/08/24 08:24:38 hsu Exp $
31  */
32
33 #include "opt_ipdivert.h"
34 #include "opt_mrouting.h"
35 #include "opt_inet6.h"
36 #include "opt_carp.h"
37
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/socket.h>
41 #include <sys/domain.h>
42 #include <sys/protosw.h>
43 #include <sys/queue.h>
44 #include <sys/sysctl.h>
45
46 #include <net/if.h>
47 #include <net/route.h>
48
49 #include <netinet/in.h>
50 #include <netinet/in_systm.h>
51 #include <netinet/in_pcb.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 #ifdef PIM
57 #include <netinet/pim_var.h>
58 #endif
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 #ifdef IPDIVERT
66 #include <netinet/ip_divert.h>
67 #endif
68
69 /*
70  * TCP/IP protocol family: IP, ICMP, UDP, TCP.
71  */
72
73 #include <net/netisr.h>         /* for cpu0_soport */
74
75 #ifdef CARP
76 #include <netinet/ip_carp.h>
77 #endif
78
79 extern  struct domain inetdomain;
80 static  struct pr_usrreqs nousrreqs;
81
82 struct protosw inetsw[] = {
83     {
84         .pr_type = 0,
85         .pr_domain = &inetdomain,
86         .pr_protocol = 0,
87         .pr_flags = 0,
88
89         .pr_ctlport = NULL,
90
91         .pr_init = ip_init,
92         .pr_drain = ip_drain,
93         .pr_usrreqs = &nousrreqs
94     },
95     {
96         .pr_type = SOCK_DGRAM,
97         .pr_domain = &inetdomain,
98         .pr_protocol = IPPROTO_UDP,
99         .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSAFE|
100             PR_ASYNC_SEND|PR_ASEND_HOLDTD|PR_ACONN_HOLDTD,
101
102         .pr_initport = udp_initport,
103         .pr_input = udp_input,
104         .pr_output = NULL,
105         .pr_ctlinput = udp_ctlinput,
106         .pr_ctloutput = udp_ctloutput,
107
108         .pr_ctlport = udp_ctlport,
109         .pr_init = udp_init,
110         .pr_usrreqs = &udp_usrreqs
111     },
112     {
113         .pr_type = SOCK_STREAM,
114         .pr_domain = &inetdomain,
115         .pr_protocol = IPPROTO_TCP,
116         .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_MPSAFE|
117             PR_ASYNC_SEND|PR_ASYNC_RCVD|PR_ACONN_HOLDTD,
118
119         .pr_initport = tcp_initport,
120         .pr_input = tcp_input,
121         .pr_output = NULL,
122         .pr_ctlinput = tcp_ctlinput,
123         .pr_ctloutmsg = tcp_ctloutmsg,
124         .pr_ctloutput = tcp_ctloutput,
125
126         .pr_ctlport = tcp_ctlport,
127         .pr_init = tcp_init,
128         .pr_drain = tcp_drain,
129         .pr_usrreqs = &tcp_usrreqs
130     },
131     {
132         .pr_type = SOCK_RAW,
133         .pr_domain = &inetdomain,
134         .pr_protocol = IPPROTO_RAW,
135         .pr_flags = PR_ATOMIC|PR_ADDR,
136
137         .pr_input = rip_input,
138         .pr_output = NULL,
139         .pr_ctlinput = rip_ctlinput,
140         .pr_ctloutput = rip_ctloutput,
141
142         .pr_ctlport = cpu0_ctlport,
143         .pr_usrreqs = &rip_usrreqs
144     },
145     {
146         .pr_type = SOCK_RAW,
147         .pr_domain = &inetdomain,
148         .pr_protocol = IPPROTO_ICMP,
149         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR|PR_MPSAFE,
150
151         .pr_input = icmp_input,
152         .pr_output = NULL,
153         .pr_ctlinput = NULL,
154         .pr_ctloutput = rip_ctloutput,
155
156         .pr_usrreqs = &rip_usrreqs
157     },
158     {
159         .pr_type = SOCK_RAW,
160         .pr_domain = &inetdomain,
161         .pr_protocol = IPPROTO_IGMP,
162         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR|PR_MPSAFE,
163
164         .pr_input = igmp_input,
165         .pr_output = NULL,
166         .pr_ctlinput = NULL,
167         .pr_ctloutput = rip_ctloutput,
168
169         .pr_init = igmp_init,
170         .pr_drain = NULL,
171         .pr_usrreqs = &rip_usrreqs
172     },
173     {
174         .pr_type = SOCK_RAW,
175         .pr_domain = &inetdomain,
176         .pr_protocol = IPPROTO_RSVP,
177         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
178
179         .pr_input = rsvp_input,
180         .pr_output = NULL,
181         .pr_ctlinput = NULL,
182         .pr_ctloutput = rip_ctloutput,
183
184         .pr_usrreqs = &rip_usrreqs
185     },
186     {
187         .pr_type = SOCK_RAW,
188         .pr_domain = &inetdomain,
189         .pr_protocol = IPPROTO_IPV4,
190         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
191         .pr_input = encap4_input,
192         .pr_output = NULL,
193         .pr_ctlinput = NULL,
194         .pr_ctloutput = rip_ctloutput,
195
196         .pr_ctlport = NULL,
197         .pr_init = encap_init,
198         .pr_usrreqs = &rip_usrreqs
199     },
200     {
201         .pr_type = SOCK_RAW,
202         .pr_domain = &inetdomain,
203         .pr_protocol = IPPROTO_MOBILE,
204         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
205
206         .pr_input = encap4_input,
207         .pr_output = NULL,
208         .pr_ctlinput = NULL,
209         .pr_ctloutput = rip_ctloutput,
210
211         .pr_ctlport = NULL,
212         .pr_init = encap_init,
213         .pr_usrreqs = &rip_usrreqs
214     },
215     {
216         .pr_type = SOCK_RAW,
217         .pr_domain = &inetdomain,
218         .pr_protocol = IPPROTO_GRE,
219         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
220
221         .pr_input = encap4_input,
222         .pr_output = NULL,
223         .pr_ctlinput = NULL,
224         .pr_ctloutput = rip_ctloutput,
225
226         .pr_ctlport = NULL,
227         .pr_init = encap_init,
228         .pr_usrreqs = &rip_usrreqs
229     },
230 #ifdef INET6
231     {
232         .pr_type = SOCK_RAW,
233         .pr_domain = &inetdomain,
234         .pr_protocol = IPPROTO_IPV6,
235         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
236
237         .pr_input = encap4_input,
238         .pr_output = NULL,
239         .pr_ctlinput = NULL,
240         .pr_ctloutput = rip_ctloutput,
241
242         .pr_ctlport = NULL,
243         .pr_init = encap_init,
244         .pr_usrreqs = &rip_usrreqs
245     },
246 #endif
247 #ifdef IPDIVERT
248     {
249         .pr_type = SOCK_RAW,
250         .pr_domain = &inetdomain,
251         .pr_protocol = IPPROTO_DIVERT,
252         .pr_flags = PR_ATOMIC|PR_ADDR,
253
254         .pr_input = div_input,
255         .pr_output = NULL,
256         .pr_ctlinput = NULL,
257         .pr_ctloutput = ip_ctloutput,
258
259         .pr_ctlport = NULL,
260         .pr_init = div_init,
261         .pr_usrreqs = &div_usrreqs
262     },
263 #endif
264 #ifdef PIM
265     {
266         .pr_type = SOCK_RAW,
267         .pr_domain = &inetdomain,
268         .pr_protocol = IPPROTO_PIM,
269         .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
270
271         .pr_input = pim_input,
272         .pr_output = NULL,
273         .pr_ctlinput = NULL,
274         .pr_ctloutput = rip_ctloutput,
275
276         .pr_ctlport = NULL,
277         .pr_usrreqs = &rip_usrreqs
278     },
279 #endif
280 #ifdef NPFSYNC
281     {
282         .pr_type = SOCK_RAW,
283         .pr_domain = &inetdomain,
284         .pr_protocol = IPPROTO_PFSYNC,
285         .pr_flags = PR_ATOMIC|PR_ADDR,
286
287         .pr_input = pfsync_input,
288         .pr_output = NULL,
289         .pr_ctlinput = NULL,
290         .pr_ctloutput = rip_ctloutput,
291
292         .pr_ctlport = NULL,
293         .pr_usrreqs = &rip_usrreqs
294     },
295 #endif  /* NPFSYNC */
296     {
297         /* raw wildcard */
298         .pr_type = SOCK_RAW,
299         .pr_domain = &inetdomain,
300         .pr_protocol = 0,
301         .pr_flags = PR_ATOMIC|PR_ADDR,
302
303         .pr_input = rip_input,
304         .pr_output = NULL,
305         .pr_ctlinput = NULL,
306         .pr_ctloutput = rip_ctloutput,
307
308         .pr_init = rip_init,
309         .pr_ctlport = NULL,
310         .pr_usrreqs = &rip_usrreqs
311     },
312 #ifdef CARP
313     {
314         .pr_type = SOCK_RAW,
315         .pr_domain = &inetdomain,
316         .pr_protocol = IPPROTO_CARP,
317         .pr_flags = PR_ATOMIC|PR_ADDR|PR_MPSAFE,
318
319         .pr_input = carp_proto_input,
320         .pr_output = rip_output,
321         .pr_ctlinput = carp_proto_ctlinput,
322         .pr_ctloutput = rip_ctloutput,
323
324         .pr_ctlport = cpu0_ctlport,
325         .pr_usrreqs = &rip_usrreqs
326     },
327 #endif
328 };
329
330 static void
331 inetdomain_init(void)
332 {
333         in_pcbglobalinit();
334 }
335
336 struct domain inetdomain = {
337         .dom_family             = AF_INET,
338         .dom_name               = "internet",
339         .dom_init               = inetdomain_init,
340         .dom_externalize        = NULL,
341         .dom_dispose            = NULL,
342         .dom_protosw            = inetsw,
343         .dom_protoswNPROTOSW    = &inetsw[NELEM(inetsw)],
344         .dom_next               = SLIST_ENTRY_INITIALIZER,
345         .dom_rtattach           = in_inithead,
346         .dom_rtoffset           = 32,
347         .dom_maxrtkey           = sizeof(struct sockaddr_in),
348         .dom_ifattach           = NULL,
349         .dom_ifdetach           = NULL
350 };
351
352 DOMAIN_SET(inet);
353
354 SYSCTL_NODE(_net,      PF_INET,         inet,   CTLFLAG_RW, 0,
355         "Internet Family");
356
357 SYSCTL_NODE(_net_inet, IPPROTO_IP,      ip,     CTLFLAG_RW, 0,  "IP");
358 SYSCTL_NODE(_net_inet, IPPROTO_ICMP,    icmp,   CTLFLAG_RW, 0,  "ICMP");
359 SYSCTL_NODE(_net_inet, IPPROTO_UDP,     udp,    CTLFLAG_RW, 0,  "UDP");
360 SYSCTL_NODE(_net_inet, IPPROTO_TCP,     tcp,    CTLFLAG_RW, 0,  "TCP");
361 SYSCTL_NODE(_net_inet, IPPROTO_IGMP,    igmp,   CTLFLAG_RW, 0,  "IGMP");
362 SYSCTL_NODE(_net_inet, IPPROTO_RAW,     raw,    CTLFLAG_RW, 0,  "RAW");
363 #ifdef IPDIVERT
364 SYSCTL_NODE(_net_inet, IPPROTO_DIVERT,  divert, CTLFLAG_RW, 0,  "DIVERT");
365 #endif
366 #ifdef PIM
367 SYSCTL_NODE(_net_inet, IPPROTO_PIM,    pim,    CTLFLAG_RW, 0,  "PIM");
368 #endif
369 #ifdef CARP
370 SYSCTL_NODE(_net_inet, IPPROTO_CARP,    carp,    CTLFLAG_RW, 0,  "CARP");
371 #endif