mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 02:20:59 +03:00
a0aadf5666
the directories at the top level but that proved troublesome. The kernel buildsystem and autoconf were conflicting too much. To resolve the issue I moved the kernel bits in to a modules directory which can then only use the kernel build system. We just pass along the likely make targets to the kernel build system. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@11 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
#include <splat-ctl.h>
|
|
|
|
#define KZT_SUBSYSTEM_KRNG 0x0300
|
|
#define KZT_KRNG_NAME "krng"
|
|
#define KZT_KRNG_DESC "Kernel Random Number Generator Tests"
|
|
|
|
#define KZT_KRNG_TEST1_ID 0x0301
|
|
#define KZT_KRNG_TEST1_NAME "freq"
|
|
#define KZT_KRNG_TEST1_DESC "Frequency Test"
|
|
|
|
#define KRNG_NUM_BITS 1048576
|
|
#define KRNG_NUM_BYTES (KRNG_NUM_BITS >> 3)
|
|
#define KRNG_NUM_BITS_DIV2 (KRNG_NUM_BITS >> 1)
|
|
#define KRNG_ERROR_RANGE 2097
|
|
|
|
/* Random Number Generator Tests
|
|
There can be meny more tests on quality of the
|
|
random number generator. For now we are only
|
|
testing the frequency of particular bits.
|
|
We could also test consecutive sequences,
|
|
randomness within a particular block, etc.
|
|
but is probably not necessary for our purposes */
|
|
|
|
static int
|
|
kzt_krng_test1(struct file *file, void *arg)
|
|
{
|
|
uint8_t *buf;
|
|
int i, j, diff, num = 0, rc = 0;
|
|
|
|
buf = kmalloc(sizeof(*buf) * KRNG_NUM_BYTES, GFP_KERNEL);
|
|
if (buf == NULL) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
memset(buf, 0, sizeof(*buf) * KRNG_NUM_BYTES);
|
|
|
|
/* Always succeeds */
|
|
random_get_pseudo_bytes(buf, sizeof(uint8_t) * KRNG_NUM_BYTES);
|
|
|
|
for (i = 0; i < KRNG_NUM_BYTES; i++) {
|
|
uint8_t tmp = buf[i];
|
|
for (j = 0; j < 8; j++) {
|
|
uint8_t tmp2 = ((tmp >> j) & 0x01);
|
|
if (tmp2 == 1) {
|
|
num++;
|
|
}
|
|
}
|
|
}
|
|
|
|
kfree(buf);
|
|
|
|
diff = KRNG_NUM_BITS_DIV2 - num;
|
|
if (diff < 0)
|
|
diff *= -1;
|
|
|
|
kzt_print(file, "Test 1 Number of ones: %d\n", num);
|
|
kzt_print(file, "Test 1 Difference from expected: %d Allowed: %d\n",
|
|
diff, KRNG_ERROR_RANGE);
|
|
|
|
if (diff > KRNG_ERROR_RANGE)
|
|
rc = -ERANGE;
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
kzt_subsystem_t *
|
|
kzt_krng_init(void)
|
|
{
|
|
kzt_subsystem_t *sub;
|
|
|
|
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
|
|
if (sub == NULL)
|
|
return NULL;
|
|
|
|
memset(sub, 0, sizeof(*sub));
|
|
strncpy(sub->desc.name, KZT_KRNG_NAME, KZT_NAME_SIZE);
|
|
strncpy(sub->desc.desc, KZT_KRNG_DESC, KZT_DESC_SIZE);
|
|
INIT_LIST_HEAD(&sub->subsystem_list);
|
|
INIT_LIST_HEAD(&sub->test_list);
|
|
spin_lock_init(&sub->test_lock);
|
|
sub->desc.id = KZT_SUBSYSTEM_KRNG;
|
|
|
|
KZT_TEST_INIT(sub, KZT_KRNG_TEST1_NAME, KZT_KRNG_TEST1_DESC,
|
|
KZT_KRNG_TEST1_ID, kzt_krng_test1);
|
|
|
|
return sub;
|
|
}
|
|
|
|
void
|
|
kzt_krng_fini(kzt_subsystem_t *sub)
|
|
{
|
|
ASSERT(sub);
|
|
|
|
KZT_TEST_FINI(sub, KZT_KRNG_TEST1_ID);
|
|
|
|
kfree(sub);
|
|
}
|
|
|
|
int
|
|
kzt_krng_id(void) {
|
|
return KZT_SUBSYSTEM_KRNG;
|
|
}
|