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Commit ee485290 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Add support for self testing framework 



This add support for the Bluetooth self testing framework that allows
running certain test cases of sample data to ensure correctness of its
basic functionality.

With this patch only the basic framework will be added. It contains
the build magic that allows running this at module loading time or
at late_initcall stage when built into the kernel image.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 4da50de8

net/bluetooth/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -64,4 +64,17 @@ config BT_6LOWPAN 
	help

	  IPv6 compression over Bluetooth Low Energy.



config BT_SELFTEST

	bool "Bluetooth self testing support"

	depends on BT && DEBUG_KERNEL

	help

	  Run self tests when initializing the Bluetooth subsystem.  This

	  is a developer option and can cause significant delay when booting

	  the system.



	  When the Bluetooth subsystem is built as module, then the test

	  cases are run first thing at module load time.  When the Bluetooth

	  subsystem is compiled into the kernel image, then the test cases

	  are run late in the initcall hierarchy.



source "drivers/bluetooth/Kconfig"

net/bluetooth/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -15,4 +15,6 @@ bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \ 
	hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \

	a2mp.o amp.o ecc.o hci_request.o hci_debugfs.o



bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o



subdir-ccflags-y += -D__CHECK_ENDIAN__

net/bluetooth/af_bluetooth.c

+6 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 
#include <net/bluetooth/bluetooth.h>

#include <linux/proc_fs.h>



#include "selftest.h"



#define VERSION "2.20"



/* Bluetooth sockets */
@@ -716,6 +718,10 @@ static int __init bt_init(void) 


	BT_INFO("Core ver %s", VERSION);



	err = bt_selftest();

	if (err < 0)

		return err;



	bt_debugfs = debugfs_create_dir("bluetooth", NULL);



	err = bt_sysfs_init();

net/bluetooth/selftest.c

0 → 100644
+62 −0
Original line number Diff line number Diff line 
/*

   BlueZ - Bluetooth protocol stack for Linux



   Copyright (C) 2014 Intel Corporation



   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 2 as

   published by the Free Software Foundation;



   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.

   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY

   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES

   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.



   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,

   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS

   SOFTWARE IS DISCLAIMED.

*/



#include <net/bluetooth/bluetooth.h>



#include "selftest.h"



static int __init run_selftest(void)

{

	BT_INFO("Starting self testing");



	BT_INFO("Finished self testing");



	return 0;

}



#if IS_MODULE(CONFIG_BT)



/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=m and is just a

 * wrapper to allow running this at module init.

 *

 * If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.

 */

int __init bt_selftest(void)

{

	return run_selftest();

}



#else



/* This is run when CONFIG_BT_SELFTEST=y and CONFIG_BT=y and is run

 * via late_initcall() as last item in the initialization sequence.

 *

 * If CONFIG_BT_SELFTEST=n, then this code is not compiled at all.

 */

static int __init bt_selftest_init(void)

{

	return run_selftest();

}

late_initcall(bt_selftest_init);



#endif

net/bluetooth/selftest.h

0 → 100644
+45 −0
Original line number Diff line number Diff line 
/*

   BlueZ - Bluetooth protocol stack for Linux

   Copyright (C) 2014 Intel Corporation



   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 2 as

   published by the Free Software Foundation;



   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.

   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY

   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES

   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.



   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,

   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS

   SOFTWARE IS DISCLAIMED.

*/



#if IS_ENABLED(CONFIG_BT_SELFTEST) && IS_MODULE(CONFIG_BT)



/* When CONFIG_BT_SELFTEST=y and the CONFIG_BT=m, then the self testing

 * is run at module loading time.

 */

int bt_selftest(void);



#else



/* When CONFIG_BT_SELFTEST=y and CONFIG_BT=y, then the self testing

 * is run via late_initcall() to make sure that subsys_initcall() of

 * the Bluetooth subsystem and device_initcall() of the Crypto subsystem

 * do not clash.

 *

 * When CONFIG_BT_SELFTEST=n, then this turns into an empty call that

 * has no impact.

 */

static inline int bt_selftest(void)

{

	return 0;

}



#endif