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) \ |
55 | MODULE(class, if_ ## name, dep); \ |
56 | IF_MODULE_CFDRIVER_DECL(name); \ |
57 | static int \ |
58 | if_ ## 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 | |