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Commit 6de50f9f authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Export ECDH selftest result in debugfs 



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: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 0151e426

net/bluetooth/selftest.c

+31 −4
Original line number Diff line number Diff line
@@ -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