1/*
2 * Copyright (c) 2012 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <sys/param.h>
30#include <sys/kernel.h>
31#include <sys/socket.h>
32#include <sys/domain.h>
33#include <sys/protosw.h>
34#include <sys/mcache.h>
35
36#include <kern/locks.h>
37
38#include <netinet/in.h>
39#if MPTCP
40#include <netinet/mptcp_var.h>
41#endif /* MPTCP */
42
43extern struct domain mpdomain_s;
44static struct domain *mpdomain = NULL;
45
46static void mp_dinit(struct domain *);
47lck_mtx_t *mp_domain_mutex;
48
49static struct protosw mpsw[] = {
50#if MPTCP
51{
52	.pr_type =		SOCK_STREAM,
53	.pr_protocol =		IPPROTO_TCP,
54	.pr_flags =		PR_CONNREQUIRED|PR_MULTICONN|PR_EVCONNINFO|
55				PR_WANTRCVD|PR_PCBLOCK|PR_PROTOLOCK,
56	.pr_ctloutput =		mptcp_ctloutput,
57	.pr_init =		mptcp_init,
58	.pr_usrreqs =		&mptcp_usrreqs,
59	.pr_lock =		mptcp_lock,
60	.pr_unlock =		mptcp_unlock,
61	.pr_getlock =		mptcp_getlock,
62},
63#endif /* MPTCP */
64};
65
66static int mp_proto_count = (sizeof (mpsw) / sizeof (struct protosw));
67
68struct domain mpdomain_s = {
69	.dom_family =		PF_MULTIPATH,
70	.dom_flags =		DOM_REENTRANT,
71	.dom_name =		"multipath",
72	.dom_init =		mp_dinit,
73};
74
75/* Initialize the PF_MULTIPATH domain, and add in the pre-defined protos */
76void
77mp_dinit(struct domain *dp)
78{
79	struct protosw *pr;
80	int i;
81
82	VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
83	VERIFY(mpdomain == NULL);
84
85	mpdomain = dp;
86
87	for (i = 0, pr = &mpsw[0]; i < mp_proto_count; i++, pr++)
88		net_add_proto(pr, dp, 1);
89
90	mp_domain_mutex = dp->dom_mtx;
91}
92