1/*	$NetBSD: bt_proto.c,v 1.17 2023/08/07 13:31:54 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2005 Iain Hibbert.
5 * Copyright (c) 2006 Itronix Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of Itronix Inc. may not be used to endorse
17 *    or promote products derived from this software without specific
18 *    prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: bt_proto.c,v 1.17 2023/08/07 13:31:54 riastradh Exp $");
35
36#include <sys/param.h>
37#include <sys/domain.h>
38#include <sys/kernel.h>
39#include <sys/module.h>
40#include <sys/protosw.h>
41#include <sys/socket.h>
42#include <sys/systm.h>
43
44#include <net/route.h>
45
46#include <netbt/bluetooth.h>
47#include <netbt/hci.h>
48#include <netbt/l2cap.h>
49#include <netbt/rfcomm.h>
50#include <netbt/sco.h>
51
52DOMAIN_DEFINE(btdomain);	/* forward declare and add to link set */
53
54static void	bt_init(void);
55
56PR_WRAP_CTLOUTPUT(hci_ctloutput)
57PR_WRAP_CTLOUTPUT(sco_ctloutput)
58PR_WRAP_CTLOUTPUT(l2cap_ctloutput)
59PR_WRAP_CTLOUTPUT(rfcomm_ctloutput)
60
61#define	hci_ctloutput		hci_ctloutput_wrapper
62#define	sco_ctloutput		sco_ctloutput_wrapper
63#define	l2cap_ctloutput		l2cap_ctloutput_wrapper
64#define	rfcomm_ctloutput	rfcomm_ctloutput_wrapper
65
66static const struct protosw btsw[] = {
67	{ /* raw HCI commands */
68		.pr_type = SOCK_RAW,
69		.pr_domain = &btdomain,
70		.pr_protocol = BTPROTO_HCI,
71		.pr_flags = (PR_ADDR | PR_ATOMIC),
72		.pr_init = hci_init,
73		.pr_ctloutput = hci_ctloutput,
74		.pr_usrreqs = &hci_usrreqs,
75	},
76	{ /* HCI SCO data (audio) */
77		.pr_type = SOCK_SEQPACKET,
78		.pr_domain = &btdomain,
79		.pr_protocol = BTPROTO_SCO,
80		.pr_flags = (PR_CONNREQUIRED | PR_ATOMIC | PR_LISTEN),
81		.pr_ctloutput = sco_ctloutput,
82		.pr_usrreqs = &sco_usrreqs,
83	},
84	{ /* L2CAP Connection Oriented */
85		.pr_type = SOCK_SEQPACKET,
86		.pr_domain = &btdomain,
87		.pr_protocol = BTPROTO_L2CAP,
88		.pr_flags = (PR_CONNREQUIRED | PR_ATOMIC | PR_LISTEN),
89		.pr_ctloutput = l2cap_ctloutput,
90		.pr_usrreqs = &l2cap_usrreqs,
91		.pr_init = l2cap_init,
92	},
93	{ /* RFCOMM */
94		.pr_type = SOCK_STREAM,
95		.pr_domain = &btdomain,
96		.pr_protocol = BTPROTO_RFCOMM,
97		.pr_flags = (PR_CONNREQUIRED | PR_LISTEN | PR_WANTRCVD),
98		.pr_ctloutput = rfcomm_ctloutput,
99		.pr_usrreqs = &rfcomm_usrreqs,
100		.pr_init = rfcomm_init,
101	},
102};
103
104struct domain btdomain = {
105	.dom_family = AF_BLUETOOTH,
106	.dom_name = "bluetooth",
107	.dom_init = bt_init,
108	.dom_protosw = btsw,
109	.dom_protoswNPROTOSW = &btsw[__arraycount(btsw)],
110};
111
112kmutex_t *bt_lock;
113
114static void
115bt_init(void)
116{
117}
118
119MODULE(MODULE_CLASS_DRIVER, netbt, NULL);
120
121static int
122netbt_modcmd(modcmd_t cmd, void *aux)
123{
124
125	switch (cmd) {
126	case MODULE_CMD_INIT:
127		bt_lock = mutex_obj_alloc(MUTEX_DEFAULT, IPL_NONE);
128		return 0;
129	case MODULE_CMD_FINI:
130		return EBUSY;	/* XXX */
131	default:
132		return ENOTTY;
133	}
134}
135