1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019-2020 The FreeBSD Foundation
5 *
6 * This software was developed by Mark Johnston under sponsorship from
7 * the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are
11 * met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include "opt_inet.h"
32 #include "opt_inet6.h"
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/protosw.h>
39 #include <sys/socket.h>
40
41 #include <netinet/in.h>
42 #include <netinet/ip.h>
43 #include <netinet/ip_var.h>
44 #include <netinet/sctp.h>
45 #include <netinet/sctp_pcb.h>
46 #include <netinet/sctp_var.h>
47 #include <netinet/sctp_os_bsd.h>
48
49 #include <netinet6/ip6_var.h>
50 #include <netinet6/sctp6_var.h>
51
52 static int
sctp_module_load(void)53 sctp_module_load(void)
54 {
55 int error;
56
57 #ifdef INET
58 error = protosw_register(&inetdomain, &sctp_stream_protosw);
59 if (error != 0)
60 return (error);
61 error = protosw_register(&inetdomain, &sctp_seqpacket_protosw);
62 if (error != 0)
63 return (error);
64 error = ipproto_register(IPPROTO_SCTP, sctp_input, sctp_ctlinput);
65 if (error != 0)
66 return (error);
67 #endif
68 #ifdef INET6
69 error = protosw_register(&inet6domain, &sctp6_stream_protosw);
70 if (error != 0)
71 return (error);
72 error = protosw_register(&inet6domain, &sctp6_seqpacket_protosw);
73 if (error != 0)
74 return (error);
75 error = ip6proto_register(IPPROTO_SCTP, sctp6_input, sctp6_ctlinput);
76 if (error != 0)
77 return (error);
78 #endif
79 error = sctp_syscalls_init();
80 if (error != 0)
81 return (error);
82 return (0);
83 }
84
85 static int __unused
sctp_module_unload(void)86 sctp_module_unload(void)
87 {
88
89 (void)sctp_syscalls_uninit();
90
91 #ifdef INET
92 (void)ipproto_unregister(IPPROTO_SCTP);
93 (void)protosw_unregister(&sctp_seqpacket_protosw);
94 (void)protosw_unregister(&sctp_stream_protosw);
95 #endif
96 #ifdef INET6
97 (void)ip6proto_unregister(IPPROTO_SCTP);
98 (void)protosw_unregister(&sctp6_seqpacket_protosw);
99 (void)protosw_unregister(&sctp6_stream_protosw);
100 #endif
101 return (0);
102 }
103
104 static int
sctp_modload(struct module * module,int cmd,void * arg)105 sctp_modload(struct module *module, int cmd, void *arg)
106 {
107 int error;
108
109 switch (cmd) {
110 case MOD_LOAD:
111 error = sctp_module_load();
112 break;
113 case MOD_UNLOAD:
114 /*
115 * Unloading SCTP is currently unsupported. Currently, SCTP
116 * iterator threads are not stopped during unload.
117 */
118 error = EOPNOTSUPP;
119 break;
120 default:
121 error = 0;
122 break;
123 }
124 return (error);
125 }
126
127 static moduledata_t sctp_mod = {
128 "sctp",
129 &sctp_modload,
130 NULL,
131 };
132
133 DECLARE_MODULE(sctp, sctp_mod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY);
134 MODULE_VERSION(sctp, 1);
135