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Add support for runtime modifiable module parameters in the LinuxKPI.

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Linux module parameters have a permissions value. If any write bits
are set we are allowed to modify the module parameter runtime. Reflect
this when creating the static SYSCTL nodes.

Sponsored by:	Mellanox Technologies
MFC after:	1 week
This commit is contained in:
Hans Petter Selasky 2016-05-26 09:04:14 +00:00
parent 707324edee
commit 06ca64ecf3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300721
1 changed files with 25 additions and 21 deletions
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46
sys/compat/linuxkpi/common/include/linux/moduleparam.h
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@ -44,77 +44,81 @@
#define LINUXKPI_PARAM_PREFIX /* empty prefix is the default */ #define LINUXKPI_PARAM_PREFIX /* empty prefix is the default */
#endif #endif
#ifndef LINUXKPI_PARAM_PERM
#define LINUXKPI_PARAM_PERM(perm) (((perm) & 0222) ? CTLFLAG_RWTUN : CTLFLAG_RDTUN)
#endif
#define LINUXKPI_PARAM_CONCAT_SUB(a,b,c,d) a##b##c##d #define LINUXKPI_PARAM_CONCAT_SUB(a,b,c,d) a##b##c##d
#define LINUXKPI_PARAM_CONCAT(...) LINUXKPI_PARAM_CONCAT_SUB(__VA_ARGS__) #define LINUXKPI_PARAM_CONCAT(...) LINUXKPI_PARAM_CONCAT_SUB(__VA_ARGS__)
#define LINUXKPI_PARAM_PASS(...) __VA_ARGS__ #define LINUXKPI_PARAM_PASS(...) __VA_ARGS__
#define LINUXKPI_PARAM_DESC(name) LINUXKPI_PARAM_CONCAT(linuxkpi_,LINUXKPI_PARAM_PREFIX,name,_desc) #define LINUXKPI_PARAM_DESC(name) LINUXKPI_PARAM_CONCAT(linuxkpi_,LINUXKPI_PARAM_PREFIX,name,_desc)
#define LINUXKPI_PARAM_NAME(name) LINUXKPI_PARAM_CONCAT(LINUXKPI_PARAM_PREFIX,name,,) #define LINUXKPI_PARAM_NAME(name) LINUXKPI_PARAM_CONCAT(LINUXKPI_PARAM_PREFIX,name,,)
#define LINUXKPI_PARAM_bool(name, var) \ #define LINUXKPI_PARAM_bool(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_BOOL(LINUXKPI_PARAM_PARENT, OID_AUTO,\ LINUXKPI_PARAM_PASS(SYSCTL_BOOL(LINUXKPI_PARAM_PARENT, OID_AUTO,\
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_byte(name, var) \ #define LINUXKPI_PARAM_byte(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_U8(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_U8(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_short(name, var) \ #define LINUXKPI_PARAM_short(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_S16(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_S16(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_ushort(name, var) \ #define LINUXKPI_PARAM_ushort(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_U16(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_U16(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_int(name, var) \ #define LINUXKPI_PARAM_int(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_INT(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_INT(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0,\
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_uint(name, var) \ #define LINUXKPI_PARAM_uint(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_UINT(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_UINT(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_long(name, var) \ #define LINUXKPI_PARAM_long(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_LONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_LONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define LINUXKPI_PARAM_ulong(name, var) \ #define LINUXKPI_PARAM_ulong(name, var, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_ULONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_ULONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define module_param_string(name, str, len, perm) \ #define module_param_string(name, str, len, perm) \
extern const char LINUXKPI_PARAM_DESC(name)[]; \ extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_STRING(LINUXKPI_PARAM_PARENT, OID_AUTO, \ LINUXKPI_PARAM_PASS(SYSCTL_STRING(LINUXKPI_PARAM_PARENT, OID_AUTO, \
LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, (str), (len), \ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), (str), (len), \
LINUXKPI_PARAM_DESC(name))) LINUXKPI_PARAM_DESC(name)))
#define module_param_named(name, var, type, mode) \ #define module_param_named(name, var, type, mode) \
LINUXKPI_PARAM_##type(name, var) LINUXKPI_PARAM_##type(name, var, mode)
#define module_param(var, type, mode) \ #define module_param(var, type, mode) \
LINUXKPI_PARAM_##type(var, var) LINUXKPI_PARAM_##type(var, var, mode)
#define module_param_named_unsafe(name, var, type, mode) \ #define module_param_named_unsafe(name, var, type, mode) \
LINUXKPI_PARAM_##type(name, var) LINUXKPI_PARAM_##type(name, var, mode)
#define module_param_unsafe(var, type, mode) \ #define module_param_unsafe(var, type, mode) \
LINUXKPI_PARAM_##type(var, var) LINUXKPI_PARAM_##type(var, var, mode)
#define module_param_array(var, type, addr_argc, mode) #define module_param_array(var, type, addr_argc, mode)