diff mbox series

[Bluez,v2] src/adv_monitor: Remove checking in device lost timeout

Message ID 20210628113535.Bluez.v2.1.I5dc587c2fe4bf2e49927513cd711d353510c12fc@changeid
State Superseded
Headers show
Series [Bluez,v2] src/adv_monitor: Remove checking in device lost timeout | expand

Commit Message

Yun-hao Chung June 28, 2021, 3:35 a.m. UTC 
From: Yun-Hao Chung <howardchung@chromium.org>

The time check in device lost timeout could cause DeviceLost never being
reported because of the following reasons:

1. Timer created in timeout_add_seconds, which calls
   g_timeout_add_seconds_full internally, can be fired one second
   earlier than |timeout| seconds.
2. When handle_device_lost_timeout is invoked early, time diff between
   |curr_time| and |last_seen| could be less than |low_rssi_timeout|. In
   this case, since handle_device_lost always returns FALSE, the
   timer will be removed, but DeviceLost has not been reported yet.
3. If we never receives any advertisement from that peer since then,
   DeviceLost will never be reported.

We can remove the checking in handle_device_lost_time because we restart
or remove the timer whenever an advertisement is received.

Reviewed-by: apusaka@chromium.org
Reviewed-by: mcchou@chromium.org
Reviewed-by: mmandlik@chromium.org
---

Changes in v2:
- Fix spelling errors

 src/adv_monitor.c | 27 ++++++---------------------
 1 file changed, 6 insertions(+), 21 deletions(-)

Comments

bluez.test.bot@gmail.com June 28, 2021, 4:02 a.m. UTC | #1 
This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=507773

---Test result---

Test Summary:
CheckPatch                    PASS      0.69 seconds
GitLint                       PASS      0.14 seconds
Prep - Setup ELL              PASS      47.87 seconds
Build - Prep                  PASS      0.11 seconds
Build - Configure             PASS      8.22 seconds
Build - Make                  PASS      204.47 seconds
Make Check                    PASS      9.06 seconds
Make Distcheck                PASS      241.25 seconds
Build w/ext ELL - Configure   PASS      8.28 seconds
Build w/ext ELL - Make        PASS      192.03 seconds

Details
##############################
Test: CheckPatch - PASS
Desc: Run checkpatch.pl script with rule in .checkpatch.conf

##############################
Test: GitLint - PASS
Desc: Run gitlint with rule in .gitlint

##############################
Test: Prep - Setup ELL - PASS
Desc: Clone, build, and install ELL

##############################
Test: Build - Prep - PASS
Desc: Prepare environment for build

##############################
Test: Build - Configure - PASS
Desc: Configure the BlueZ source tree

##############################
Test: Build - Make - PASS
Desc: Build the BlueZ source tree

##############################
Test: Make Check - PASS
Desc: Run 'make check'

##############################
Test: Make Distcheck - PASS
Desc: Run distcheck to check the distribution

##############################
Test: Build w/ext ELL - Configure - PASS
Desc: Configure BlueZ source with '--enable-external-ell' configuration

##############################
Test: Build w/ext ELL - Make - PASS
Desc: Build BlueZ source with '--enable-external-ell' configuration



---
Regards,
Linux Bluetooth
Yun-hao Chung July 8, 2021, 2:35 a.m. UTC | #2 
Gentle ping.

On Mon, Jun 28, 2021 at 12:02 PM <bluez.test.bot@gmail.com> wrote:
>

> This is automated email and please do not reply to this email!

>

> Dear submitter,

>

> Thank you for submitting the patches to the linux bluetooth mailing list.

> This is a CI test results with your patch series:

> PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=507773

>

> ---Test result---

>

> Test Summary:

> CheckPatch                    PASS      0.69 seconds

> GitLint                       PASS      0.14 seconds

> Prep - Setup ELL              PASS      47.87 seconds

> Build - Prep                  PASS      0.11 seconds

> Build - Configure             PASS      8.22 seconds

> Build - Make                  PASS      204.47 seconds

> Make Check                    PASS      9.06 seconds

> Make Distcheck                PASS      241.25 seconds

> Build w/ext ELL - Configure   PASS      8.28 seconds

> Build w/ext ELL - Make        PASS      192.03 seconds

>

> Details

> ##############################

> Test: CheckPatch - PASS

> Desc: Run checkpatch.pl script with rule in .checkpatch.conf

>

> ##############################

> Test: GitLint - PASS

> Desc: Run gitlint with rule in .gitlint

>

> ##############################

> Test: Prep - Setup ELL - PASS

> Desc: Clone, build, and install ELL

>

> ##############################

> Test: Build - Prep - PASS

> Desc: Prepare environment for build

>

> ##############################

> Test: Build - Configure - PASS

> Desc: Configure the BlueZ source tree

>

> ##############################

> Test: Build - Make - PASS

> Desc: Build the BlueZ source tree

>

> ##############################

> Test: Make Check - PASS

> Desc: Run 'make check'

>

> ##############################

> Test: Make Distcheck - PASS

> Desc: Run distcheck to check the distribution

>

> ##############################

> Test: Build w/ext ELL - Configure - PASS

> Desc: Configure BlueZ source with '--enable-external-ell' configuration

>

> ##############################

> Test: Build w/ext ELL - Make - PASS

> Desc: Build BlueZ source with '--enable-external-ell' configuration

>

>

>

> ---

> Regards,

> Linux Bluetooth

>
Luiz Augusto von Dentz July 9, 2021, 8:20 p.m. UTC | #3 
Hi,

On Wed, Jul 7, 2021 at 7:35 PM Yun-hao Chung <howardchung@google.com> wrote:
>

> Gentle ping.

>

> On Mon, Jun 28, 2021 at 12:02 PM <bluez.test.bot@gmail.com> wrote:

> >

> > This is automated email and please do not reply to this email!

> >

> > Dear submitter,

> >

> > Thank you for submitting the patches to the linux bluetooth mailing list.

> > This is a CI test results with your patch series:

> > PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=507773

> >

> > ---Test result---

> >

> > Test Summary:

> > CheckPatch                    PASS      0.69 seconds

> > GitLint                       PASS      0.14 seconds

> > Prep - Setup ELL              PASS      47.87 seconds

> > Build - Prep                  PASS      0.11 seconds

> > Build - Configure             PASS      8.22 seconds

> > Build - Make                  PASS      204.47 seconds

> > Make Check                    PASS      9.06 seconds

> > Make Distcheck                PASS      241.25 seconds

> > Build w/ext ELL - Configure   PASS      8.28 seconds

> > Build w/ext ELL - Make        PASS      192.03 seconds

> >

> > Details

> > ##############################

> > Test: CheckPatch - PASS

> > Desc: Run checkpatch.pl script with rule in .checkpatch.conf

> >

> > ##############################

> > Test: GitLint - PASS

> > Desc: Run gitlint with rule in .gitlint

> >

> > ##############################

> > Test: Prep - Setup ELL - PASS

> > Desc: Clone, build, and install ELL

> >

> > ##############################

> > Test: Build - Prep - PASS

> > Desc: Prepare environment for build

> >

> > ##############################

> > Test: Build - Configure - PASS

> > Desc: Configure the BlueZ source tree

> >

> > ##############################

> > Test: Build - Make - PASS

> > Desc: Build the BlueZ source tree

> >

> > ##############################

> > Test: Make Check - PASS

> > Desc: Run 'make check'

> >

> > ##############################

> > Test: Make Distcheck - PASS

> > Desc: Run distcheck to check the distribution

> >

> > ##############################

> > Test: Build w/ext ELL - Configure - PASS

> > Desc: Configure BlueZ source with '--enable-external-ell' configuration

> >

> > ##############################

> > Test: Build w/ext ELL - Make - PASS

> > Desc: Build BlueZ source with '--enable-external-ell' configuration

> >

> >

> >

> > ---

> > Regards,

> > Linux Bluetooth

> >


Applied, thanks.

-- 
Luiz Augusto von Dentz
diff mbox series

Patch

diff --git a/src/adv_monitor.c b/src/adv_monitor.c
index 17f1777eb1da..715ac5904b9a 100644
--- a/src/adv_monitor.c
+++ b/src/adv_monitor.c
@@ -1884,31 +1884,16 @@  static bool handle_device_lost_timeout(gpointer user_data)
 {
 	struct adv_monitor_device *dev = user_data;
 	struct adv_monitor *monitor = dev->monitor;
-	time_t curr_time = time(NULL);
 
-	DBG("Device Lost timeout triggered for device %p "
-	    "for the Adv Monitor at path %s", dev->device, monitor->path);
+	DBG("Device Lost timeout triggered for device %p. Calling DeviceLost() "
+	    "on Adv Monitor of owner %s at path %s", dev->device,
+					    monitor->app->owner, monitor->path);
 
+	g_dbus_proxy_method_call(monitor->proxy, "DeviceLost",
+				 report_device_state_setup,
+				 NULL, dev->device, NULL);
 	dev->lost_timer = 0;
 
-	if (dev->found && dev->last_seen) {
-		/* We were tracking for the Low RSSI filter. Check if there is
-		 * any Adv received after the timeout function is invoked.
-		 * If not, report the Device Lost event.
-		 */
-		if (difftime(curr_time, dev->last_seen) >=
-		    monitor->rssi.low_rssi_timeout) {
-			dev->found = false;
-
-			DBG("Calling DeviceLost() on Adv Monitor of owner %s "
-			    "at path %s", monitor->app->owner, monitor->path);
-
-			g_dbus_proxy_method_call(monitor->proxy, "DeviceLost",
-						 report_device_state_setup,
-						 NULL, dev->device, NULL);
-		}
-	}
-
 	return FALSE;
 }