/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019-2020 The FreeBSD Foundation
*
* This software was developed by Mark Johnston under sponsorship from
* the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_inet.h"
#include "opt_inet6.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/sctp.h>
#include <netinet/sctp_pcb.h>
#include <netinet/sctp_var.h>
#include <netinet/sctp_os_bsd.h>
#include <netinet6/ip6_var.h>
#include <netinet6/sctp6_var.h>
#ifdef INET
extern struct domain inetdomain;
struct protosw sctp_stream_protosw = {
.pr_type = SOCK_STREAM,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_SCTP,
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
.pr_input = sctp_input,
.pr_ctlinput = sctp_ctlinput,
.pr_ctloutput = sctp_ctloutput,
.pr_drain = sctp_drain,
.pr_usrreqs = &sctp_usrreqs,
};
struct protosw sctp_seqpacket_protosw = {
.pr_type = SOCK_SEQPACKET,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_SCTP,
.pr_flags = PR_WANTRCVD|PR_LASTHDR,
.pr_input = sctp_input,
.pr_ctlinput = sctp_ctlinput,
.pr_ctloutput = sctp_ctloutput,
.pr_drain = sctp_drain,
.pr_usrreqs = &sctp_usrreqs,
};
#endif
#ifdef INET6
extern struct domain inet6domain;
struct protosw sctp6_stream_protosw = {
.pr_type = SOCK_STREAM,
.pr_domain = &inet6domain,
.pr_protocol = IPPROTO_SCTP,
.pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
.pr_input = sctp6_input,
.pr_ctlinput = sctp6_ctlinput,
.pr_ctloutput = sctp_ctloutput,
.pr_init = sctp_init,
.pr_drain = sctp_drain,
.pr_usrreqs = &sctp6_usrreqs,
};
struct protosw sctp6_seqpacket_protosw = {
.pr_type = SOCK_SEQPACKET,
.pr_domain = &inet6domain,
.pr_protocol = IPPROTO_SCTP,
.pr_flags = PR_WANTRCVD|PR_LASTHDR,
.pr_input = sctp6_input,
.pr_ctlinput = sctp6_ctlinput,
.pr_ctloutput = sctp_ctloutput,
#ifndef INET /* Do not call initialization and drain routines twice. */
.pr_init = sctp_init,
.pr_drain = sctp_drain,
#endif
.pr_usrreqs = &sctp6_usrreqs,
};
#endif
static int
sctp_module_load(void)
{
int error;
#ifdef INET
error = pf_proto_register(PF_INET, &sctp_stream_protosw);
if (error != 0)
return (error);
error = pf_proto_register(PF_INET, &sctp_seqpacket_protosw);
if (error != 0)
return (error);
error = ipproto_register(IPPROTO_SCTP);
if (error != 0)
return (error);
#endif
#ifdef INET6
error = pf_proto_register(PF_INET6, &sctp6_stream_protosw);
if (error != 0)
return (error);
error = pf_proto_register(PF_INET6, &sctp6_seqpacket_protosw);
if (error != 0)
return (error);
error = ip6proto_register(IPPROTO_SCTP);
if (error != 0)
return (error);
#endif
error = sctp_syscalls_init();
if (error != 0)
return (error);
return (0);
}
static int __unused
sctp_module_unload(void)
{
(void)sctp_syscalls_uninit();
#ifdef INET
(void)ipproto_unregister(IPPROTO_SCTP);
(void)pf_proto_unregister(PF_INET, IPPROTO_SCTP, SOCK_STREAM);
(void)pf_proto_unregister(PF_INET, IPPROTO_SCTP, SOCK_SEQPACKET);
#endif
#ifdef INET6
(void)ip6proto_unregister(IPPROTO_SCTP);
(void)pf_proto_unregister(PF_INET6, IPPROTO_SCTP, SOCK_STREAM);
(void)pf_proto_unregister(PF_INET6, IPPROTO_SCTP, SOCK_SEQPACKET);
#endif
return (0);
}
static int
sctp_modload(struct module *module, int cmd, void *arg)
{
int error;
switch (cmd) {
case MOD_LOAD:
error = sctp_module_load();
break;
case MOD_UNLOAD:
/*
* Unloading SCTP is currently unsupported. Currently, SCTP
* iterator threads are not stopped during unload.
*/
error = EOPNOTSUPP;
break;
default:
error = 0;
break;
}
return (error);
}
static moduledata_t sctp_mod = {
"sctp",
&sctp_modload,
NULL,
};
DECLARE_MODULE(sctp, sctp_mod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY);
MODULE_VERSION(sctp, 1);
