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