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(var, type, mode) \ 92 module_param_named(var, var, type, mode) 93 94 #define module_param_array(var, type, addr_argc, mode) \ 95 module_param_named(var, var, type, mode) 96 97 #define MODULE_PARM_DESC(name, desc) 98 99 static inline int 100 param_set_byte(const char *val, struct kernel_param *kp) 101 { 102 103 return 0; 104 } 105 106 static inline int 107 param_get_byte(char *buffer, struct kernel_param *kp) 108 { 109 110 return 0; 111 } 112 113 114 static inline int 115 param_set_short(const char *val, struct kernel_param *kp) 116 { 117 118 return 0; 119 } 120 121 static inline int 122 param_get_short(char *buffer, struct kernel_param *kp) 123 { 124 125 return 0; 126 } 127 128 129 static inline int 130 param_set_ushort(const char *val, struct kernel_param *kp) 131 { 132 133 return 0; 134 } 135 136 static inline int 137 param_get_ushort(char *buffer, struct kernel_param *kp) 138 { 139 140 return 0; 141 } 142 143 144 static inline int 145 param_set_int(const char *val, struct kernel_param *kp) 146 { 147 148 return 0; 149 } 150 151 static inline int 152 param_get_int(char *buffer, struct kernel_param *kp) 153 { 154 155 return 0; 156 } 157 158 159 static inline int 160 param_set_uint(const char *val, struct kernel_param *kp) 161 { 162 163 return 0; 164 } 165 166 static inline int 167 param_get_uint(char *buffer, struct kernel_param *kp) 168 { 169 170 return 0; 171 } 172 173 174 static inline int 175 param_set_long(const char *val, struct kernel_param *kp) 176 { 177 178 return 0; 179 } 180 181 static inline int 182 param_get_long(char *buffer, struct kernel_param *kp) 183 { 184 185 return 0; 186 } 187 188 189 static inline int 190 param_set_ulong(const char *val, struct kernel_param *kp) 191 { 192 193 return 0; 194 } 195 196 static inline int 197 param_get_ulong(char *buffer, struct kernel_param *kp) 198 { 199 200 return 0; 201 } 202 203 204 static inline int 205 param_set_charp(const char *val, struct kernel_param *kp) 206 { 207 208 return 0; 209 } 210 211 static inline int 212 param_get_charp(char *buffer, struct kernel_param *kp) 213 { 214 215 return 0; 216 } 217 218 219 static inline int 220 param_set_bool(const char *val, struct kernel_param *kp) 221 { 222 223 return 0; 224 } 225 226 static inline int 227 param_get_bool(char *buffer, struct kernel_param *kp) 228 { 229 230 return 0; 231 } 232 233 #endif /* _LINUX_MODULEPARAM_H_ */ 234