e7d02be19d
o Assert that every protosw has pr_attach. Now this structure is only for socket protocols declarations and nothing else. o Merge struct pr_usrreqs into struct protosw. This was suggested in 1996 by wollman@ (see7b187005d1), and later reiterated in 2006 by rwatson@ (see6fbb9cf860). o Make struct domain hold a variable sized array of protosw pointers. For most protocols these pointers are initialized statically. Those domains that may have loadable protocols have spacers. IPv4 and IPv6 have 8 spacers each (andre@dff3237ee5). o For inetsw and inet6sw leave a comment noting that many protosw entries very likely are dead code. o Refactor pf_proto_[un]register() into protosw_[un]register(). o Isolate pr_*_notsupp() methods into uipc_domain.c Reviewed by: melifaro Differential revision: https://reviews.freebsd.org/D36232
138 lines
3.7 KiB
C
138 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2019-2020 The FreeBSD Foundation
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*
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* This software was developed by Mark Johnston under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/sctp.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_os_bsd.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/sctp6_var.h>
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static int
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sctp_module_load(void)
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{
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int error;
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#ifdef INET
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error = protosw_register(&inetdomain, &sctp_stream_protosw);
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if (error != 0)
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return (error);
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error = protosw_register(&inetdomain, &sctp_seqpacket_protosw);
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if (error != 0)
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return (error);
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error = ipproto_register(IPPROTO_SCTP, sctp_input, sctp_ctlinput);
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if (error != 0)
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return (error);
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#endif
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#ifdef INET6
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error = protosw_register(&inet6domain, &sctp6_stream_protosw);
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if (error != 0)
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return (error);
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error = protosw_register(&inet6domain, &sctp6_seqpacket_protosw);
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if (error != 0)
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return (error);
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error = ip6proto_register(IPPROTO_SCTP, sctp6_input, sctp6_ctlinput);
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if (error != 0)
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return (error);
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#endif
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error = sctp_syscalls_init();
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if (error != 0)
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return (error);
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return (0);
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}
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static int __unused
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sctp_module_unload(void)
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{
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(void)sctp_syscalls_uninit();
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#ifdef INET
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(void)ipproto_unregister(IPPROTO_SCTP);
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(void)protosw_unregister(&sctp_seqpacket_protosw);
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(void)protosw_unregister(&sctp_stream_protosw);
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#endif
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#ifdef INET6
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(void)ip6proto_unregister(IPPROTO_SCTP);
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(void)protosw_unregister(&sctp6_seqpacket_protosw);
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(void)protosw_unregister(&sctp6_stream_protosw);
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#endif
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return (0);
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}
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static int
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sctp_modload(struct module *module, int cmd, void *arg)
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{
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int error;
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switch (cmd) {
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case MOD_LOAD:
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error = sctp_module_load();
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break;
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case MOD_UNLOAD:
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/*
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* Unloading SCTP is currently unsupported. Currently, SCTP
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* iterator threads are not stopped during unload.
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*/
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error = EOPNOTSUPP;
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break;
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default:
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error = 0;
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break;
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}
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return (error);
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}
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static moduledata_t sctp_mod = {
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"sctp",
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&sctp_modload,
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NULL,
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};
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DECLARE_MODULE(sctp, sctp_mod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY);
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MODULE_VERSION(sctp, 1);
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