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Bluetooth: Export ECDH selftest result in debugfs

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When ECDH selftest is enabled, then besides printing the result into the
kernel message buffer, also create a debugfs file that allows retrieving
the same information.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2015-04-01 12:52:12 -07:00 committed by Johan Hedberg
parent 0151e426b1
commit 6de50f9fdb
1 changed files with 31 additions and 4 deletions
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35
net/bluetooth/selftest.c
View file

@ -21,6 +21,8 @@
SOFTWARE IS DISCLAIMED.
*/
#include <linux/debugfs.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@ -154,6 +156,21 @@ static int __init test_ecdh_sample(const u8 priv_a[32], const u8 priv_b[32],
return 0;
}
static char test_ecdh_buffer[32];
static ssize_t test_ecdh_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
return simple_read_from_buffer(user_buf, count, ppos, test_ecdh_buffer,
strlen(test_ecdh_buffer));
}
static const struct file_operations test_ecdh_fops = {
.open = simple_open,
.read = test_ecdh_read,
.llseek = default_llseek,
};
static int __init test_ecdh(void)
{
ktime_t calltime, delta, rettime;
@ -165,19 +182,19 @@ static int __init test_ecdh(void)
err = test_ecdh_sample(priv_a_1, priv_b_1, pub_a_1, pub_b_1, dhkey_1);
if (err) {
BT_ERR("ECDH sample 1 failed");
return err;
goto done;
}
err = test_ecdh_sample(priv_a_2, priv_b_2, pub_a_2, pub_b_2, dhkey_2);
if (err) {
BT_ERR("ECDH sample 2 failed");
return err;
goto done;
}
err = test_ecdh_sample(priv_a_3, priv_a_3, pub_a_3, pub_a_3, dhkey_3);
if (err) {
BT_ERR("ECDH sample 3 failed");
return err;
goto done;
}
rettime = ktime_get();
@ -186,7 +203,17 @@ static int __init test_ecdh(void)
BT_INFO("ECDH test passed in %llu usecs", duration);
return 0;
done:
if (!err)
snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer),
"PASS (%llu usecs)\n", duration);
else
snprintf(test_ecdh_buffer, sizeof(test_ecdh_buffer), "FAIL\n");
debugfs_create_file("selftest_ecdh", 0444, bt_debugfs, NULL,
&test_ecdh_fops);
return err;
}
#else