1/* $NetBSD: if_module.h,v 1.1 2016/08/07 17:38:34 christos Exp $ */
2
3/*-
4 * Copyright (c) 2016 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifdef _MODULE
30# define IF_MODULE_CFDRIVER_DECL(name) CFDRIVER_DECL(name, DV_IFNET, NULL)
31# define IF_MODULE_CFDRIVER_ATTACH(name) \
32 error = config_cfdriver_attach(& name ## _cd); \
33 if (error) { \
34 aprint_error("%s: unable to register cfdriver for" \
35 "%s, error %d\n", __func__, name ## _cd.cd_name,\
36 error); \
37 break; \
38 }
39# define IF_MODULE_CFDRIVER_DETACH(name) \
40 /* Remove device from autoconf database */ \
41 error = config_cfdriver_detach(&name ## _cd); \
42 if (error) { \
43 aprint_error("%s: failed to detach %s cfdriver, " \
44 "error %d\n", __func__, name ## _cd.cd_name, \
45 error); \
46 break; \
47 }
48#else
49# define IF_MODULE_CFDRIVER_DECL(name)
50# define IF_MODULE_CFDRIVER_ATTACH(name)
51# define IF_MODULE_CFDRIVER_DETACH(name)
52#endif
53
54#define IF_MODULE(class, name, dep) \
55MODULE(class, if_ ## name, dep); \
56IF_MODULE_CFDRIVER_DECL(name); \
57static int \
58if_ ## name ## _modcmd(modcmd_t cmd, void *arg) \
59{ \
60 int error = 0; \
61 \
62 switch (cmd) { \
63 case MODULE_CMD_INIT: \
64 IF_MODULE_CFDRIVER_ATTACH(name) \
65 /* Init the unit list/line discipline stuff */ \
66 name ## init(); \
67 break; \
68 \
69 case MODULE_CMD_FINI: \
70 /* \
71 * Make sure it's ok to detach - no units left, \
72 * and line discipline is removed \
73 */ \
74 error = name ## detach(); \
75 if (error != 0) \
76 break; \
77 IF_MODULE_CFDRIVER_DETACH(name) \
78 break; \
79 \
80 case MODULE_CMD_STAT: \
81 error = ENOTTY; \
82 break; \
83 default: \
84 error = ENOTTY; \
85 break; \
86 } \
87 \
88 return error; \
89}
90