1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 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 unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _LINUX_MODULEPARAM_H_ 31 #define _LINUX_MODULEPARAM_H_ 32 33 #include <linux/types.h> 34 35 /* 36 * These are presently not hooked up to anything. In linux the parameters 37 * can be set when modules are loaded. On FreeBSD these could be mapped 38 * to kenv in the future. 39 */ 40 struct kernel_param; 41 42 typedef int (*param_set_fn)(const char *val, struct kernel_param *kp); 43 typedef int (*param_get_fn)(char *buffer, struct kernel_param *kp); 44 45 struct kernel_param { 46 const char *name; 47 u16 perm; 48 u16 flags; 49 param_set_fn set; 50 param_get_fn get; 51 union { 52 void *arg; 53 struct kparam_string *str; 54 struct kparam_array *arr; 55 } un; 56 }; 57 58 #define KPARAM_ISBOOL 2 59 60 struct kparam_string { 61 unsigned int maxlen; 62 char *string; 63 }; 64 65 struct kparam_array 66 { 67 unsigned int max; 68 unsigned int *num; 69 param_set_fn set; 70 param_get_fn get; 71 unsigned int elemsize; 72 void *elem; 73 }; 74 75 static inline void 76 param_sysinit(struct kernel_param *param) 77 { 78 } 79 80 #define module_param_call(name, set, get, arg, perm) \ 81 static struct kernel_param __param_##name = \ 82 { #name, perm, 0, set, get, { arg } }; \ 83 SYSINIT(name##_param_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, \ 84 param_sysinit, &__param_##name); 85 86 #define module_param_string(name, string, len, perm) 87 88 #define module_param_named(name, var, type, mode) \ 89 module_param_call(name, param_set_##type, param_get_##type, &var, mode) 90 91 #define module_param_named_unsafe(name, value, type, perm) \ 92 module_param_named(name, value, type, perm) 93 94 #define module_param(var, type, mode) \ 95 module_param_named(var, var, type, mode) 96 97 #define module_param_array(var, type, addr_argc, mode) \ 98 module_param_named(var, var, type, mode) 99 100 #define MODULE_PARM_DESC(name, desc) 101 102 static inline int 103 param_set_byte(const char *val, struct kernel_param *kp) 104 { 105 106 return 0; 107 } 108 109 static inline int 110 param_get_byte(char *buffer, struct kernel_param *kp) 111 { 112 113 return 0; 114 } 115 116 117 static inline int 118 param_set_short(const char *val, struct kernel_param *kp) 119 { 120 121 return 0; 122 } 123 124 static inline int 125 param_get_short(char *buffer, struct kernel_param *kp) 126 { 127 128 return 0; 129 } 130 131 132 static inline int 133 param_set_ushort(const char *val, struct kernel_param *kp) 134 { 135 136 return 0; 137 } 138 139 static inline int 140 param_get_ushort(char *buffer, struct kernel_param *kp) 141 { 142 143 return 0; 144 } 145 146 147 static inline int 148 param_set_int(const char *val, struct kernel_param *kp) 149 { 150 151 return 0; 152 } 153 154 static inline int 155 param_get_int(char *buffer, struct kernel_param *kp) 156 { 157 158 return 0; 159 } 160 161 162 static inline int 163 param_set_uint(const char *val, struct kernel_param *kp) 164 { 165 166 return 0; 167 } 168 169 static inline int 170 param_get_uint(char *buffer, struct kernel_param *kp) 171 { 172 173 return 0; 174 } 175 176 177 static inline int 178 param_set_long(const char *val, struct kernel_param *kp) 179 { 180 181 return 0; 182 } 183 184 static inline int 185 param_get_long(char *buffer, struct kernel_param *kp) 186 { 187 188 return 0; 189 } 190 191 192 static inline int 193 param_set_ulong(const char *val, struct kernel_param *kp) 194 { 195 196 return 0; 197 } 198 199 static inline int 200 param_get_ulong(char *buffer, struct kernel_param *kp) 201 { 202 203 return 0; 204 } 205 206 207 static inline int 208 param_set_charp(const char *val, struct kernel_param *kp) 209 { 210 211 return 0; 212 } 213 214 static inline int 215 param_get_charp(char *buffer, struct kernel_param *kp) 216 { 217 218 return 0; 219 } 220 221 222 static inline int 223 param_set_bool(const char *val, struct kernel_param *kp) 224 { 225 226 return 0; 227 } 228 229 static inline int 230 param_get_bool(char *buffer, struct kernel_param *kp) 231 { 232 233 return 0; 234 } 235 236 #endif /* _LINUX_MODULEPARAM_H_ */ 237