#define ZFS_MODULE_PARAM_CALL(scope_prefix, name_prefix, name, func, _, perm, desc) \
ZFS_MODULE_PARAM_CALL_IMPL(_vfs_ ## scope_prefix, name, perm, func ## _args(name_prefix ## name), desc)
+#define ZFS_MODULE_VIRTUAL_PARAM_CALL ZFS_MODULE_PARAM_CALL
+
#define param_set_arc_long_args(var) \
CTLTYPE_ULONG, &var, 0, param_set_arc_long, "LU"
#define param_set_max_auto_ashift_args(var) \
CTLTYPE_U64, &var, 0, param_set_max_auto_ashift, "QU"
+#define fletcher_4_param_set_args(var) \
+ CTLTYPE_STRING, NULL, 0, fletcher_4_param, "A"
+
#include <sys/kernel.h>
#define module_init(fn) \
static void \
MODULE_PARM_DESC(name_prefix ## name, desc)
/* END CSTYLED */
+/*
+ * As above, but there is no variable with the name name_prefix ## name,
+ * so NULL is passed to module_param_call instead.
+ */
+/* BEGIN CSTYLED */
+#define ZFS_MODULE_VIRTUAL_PARAM_CALL(scope_prefix, name_prefix, name, setfunc, getfunc, perm, desc) \
+ CTASSERT_GLOBAL((sizeof (scope_prefix) == sizeof (enum scope_prefix_types))); \
+ module_param_call(name_prefix ## name, setfunc, getfunc, NULL, perm); \
+ MODULE_PARM_DESC(name_prefix ## name, desc)
+/* END CSTYLED */
+
#define ZFS_MODULE_PARAM_ARGS const char *buf, zfs_kernel_param_t *kp
#define ZFS_MODULE_DESCRIPTION(s) MODULE_DESCRIPTION(s)
.acf_iter = abd_fletcher_4_iter
};
+#if defined(_KERNEL)
+
+#define IMPL_FMT(impl, i) (((impl) == (i)) ? "[%s] " : "%s ")
-#if defined(_KERNEL) && defined(__linux__)
+#if defined(__linux__)
static int
fletcher_4_param_get(char *buffer, zfs_kernel_param_t *unused)
{
const uint32_t impl = IMPL_READ(fletcher_4_impl_chosen);
char *fmt;
- int i, cnt = 0;
+ int cnt = 0;
/* list fastest */
- fmt = (impl == IMPL_FASTEST) ? "[%s] " : "%s ";
+ fmt = IMPL_FMT(impl, IMPL_FASTEST);
cnt += sprintf(buffer + cnt, fmt, "fastest");
/* list all supported implementations */
- for (i = 0; i < fletcher_4_supp_impls_cnt; i++) {
- fmt = (i == impl) ? "[%s] " : "%s ";
+ for (uint32_t i = 0; i < fletcher_4_supp_impls_cnt; ++i) {
+ fmt = IMPL_FMT(impl, i);
cnt += sprintf(buffer + cnt, fmt,
fletcher_4_supp_impls[i]->name);
}
return (fletcher_4_impl_set(val));
}
+#else
+
+#include <sys/sbuf.h>
+
+static int
+fletcher_4_param(ZFS_MODULE_PARAM_ARGS)
+{
+ int err;
+
+ if (req->newptr == NULL) {
+ const uint32_t impl = IMPL_READ(fletcher_4_impl_chosen);
+ const int init_buflen = 64;
+ const char *fmt;
+ struct sbuf *s;
+
+ s = sbuf_new_for_sysctl(NULL, NULL, init_buflen, req);
+
+ /* list fastest */
+ fmt = IMPL_FMT(impl, IMPL_FASTEST);
+ (void) sbuf_printf(s, fmt, "fastest");
+
+ /* list all supported implementations */
+ for (uint32_t i = 0; i < fletcher_4_supp_impls_cnt; ++i) {
+ fmt = IMPL_FMT(impl, i);
+ (void) sbuf_printf(s, fmt,
+ fletcher_4_supp_impls[i]->name);
+ }
+
+ err = sbuf_finish(s);
+ sbuf_delete(s);
+
+ return (err);
+ }
+
+ char buf[16];
+
+ err = sysctl_handle_string(oidp, buf, sizeof (buf), req);
+ if (err)
+ return (err);
+ return (-fletcher_4_impl_set(buf));
+}
+
+#endif
+
+#undef IMPL_FMT
+
/*
* Choose a fletcher 4 implementation in ZFS.
* Users can choose "cycle" to exercise all implementations, but this is
* for testing purpose therefore it can only be set in user space.
*/
-module_param_call(zfs_fletcher_4_impl,
- fletcher_4_param_set, fletcher_4_param_get, NULL, 0644);
-MODULE_PARM_DESC(zfs_fletcher_4_impl, "Select fletcher 4 implementation.");
+/* BEGIN CSTYLED */
+ZFS_MODULE_VIRTUAL_PARAM_CALL(zfs, zfs_, fletcher_4_impl,
+ fletcher_4_param_set, fletcher_4_param_get, ZMOD_RW,
+ "Select fletcher 4 implementation.");
+/* END CSTYLED */
EXPORT_SYMBOL(fletcher_init);
EXPORT_SYMBOL(fletcher_2_incremental_native);