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 */ 40struct kernel_param; 41 42typedef int (*param_set_fn)(const char *val, struct kernel_param *kp); 43typedef int (*param_get_fn)(char *buffer, struct kernel_param *kp); 44 45struct 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 60struct kparam_string { 61 unsigned int maxlen; 62 char *string; 63}; 64 65struct 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 75static inline void 76param_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 99static inline int 100param_set_byte(const char *val, struct kernel_param *kp) 101{ 102 103 return 0; 104} 105 106static inline int 107param_get_byte(char *buffer, struct kernel_param *kp) 108{ 109 110 return 0; 111} 112 113 114static inline int 115param_set_short(const char *val, struct kernel_param *kp) 116{ 117 118 return 0; 119} 120 121static inline int 122param_get_short(char *buffer, struct kernel_param *kp) 123{ 124 125 return 0; 126} 127 128 129static inline int 130param_set_ushort(const char *val, struct kernel_param *kp) 131{ 132 133 return 0; 134} 135 136static inline int 137param_get_ushort(char *buffer, struct kernel_param *kp) 138{ 139 140 return 0; 141} 142 143 144static inline int 145param_set_int(const char *val, struct kernel_param *kp) 146{ 147 148 return 0; 149} 150 151static inline int 152param_get_int(char *buffer, struct kernel_param *kp) 153{ 154 155 return 0; 156} 157 158 159static inline int 160param_set_uint(const char *val, struct kernel_param *kp) 161{ 162 163 return 0; 164} 165 166static inline int 167param_get_uint(char *buffer, struct kernel_param *kp) 168{ 169 170 return 0; 171} 172 173 174static inline int 175param_set_long(const char *val, struct kernel_param *kp) 176{ 177 178 return 0; 179} 180 181static inline int 182param_get_long(char *buffer, struct kernel_param *kp) 183{ 184 185 return 0; 186} 187 188 189static inline int 190param_set_ulong(const char *val, struct kernel_param *kp) 191{ 192 193 return 0; 194} 195 196static inline int 197param_get_ulong(char *buffer, struct kernel_param *kp) 198{ 199 200 return 0; 201} 202 203 204static inline int 205param_set_charp(const char *val, struct kernel_param *kp) 206{ 207 208 return 0; 209} 210 211static inline int 212param_get_charp(char *buffer, struct kernel_param *kp) 213{ 214 215 return 0; 216} 217 218 219static inline int 220param_set_bool(const char *val, struct kernel_param *kp) 221{ 222 223 return 0; 224} 225 226static inline int 227param_get_bool(char *buffer, struct kernel_param *kp) 228{ 229 230 return 0; 231} 232 233#endif /* _LINUX_MODULEPARAM_H_ */ 234