Bluetooth: Advertising entries lifetime
This patch adds a timer to clear 'adv_entries' after three minutes.
After some amount of time, the advertising entries cached during
the last LE scan should be considered expired and they should be
removed from the advertising cache.
It was chosen a three minutes timeout as an initial attempt. This
value might change in future.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index cc40f22..ff6b784 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1202,6 +1202,17 @@
return 0;
}
+static void hci_clear_adv_cache(unsigned long arg)
+{
+ struct hci_dev *hdev = (void *) arg;
+
+ hci_dev_lock(hdev);
+
+ hci_adv_entries_clear(hdev);
+
+ hci_dev_unlock(hdev);
+}
+
int hci_adv_entries_clear(struct hci_dev *hdev)
{
struct adv_entry *entry, *tmp;
@@ -1330,6 +1341,8 @@
INIT_LIST_HEAD(&hdev->remote_oob_data);
INIT_LIST_HEAD(&hdev->adv_entries);
+ setup_timer(&hdev->adv_timer, hci_clear_adv_cache,
+ (unsigned long) hdev);
INIT_WORK(&hdev->power_on, hci_power_on);
INIT_WORK(&hdev->power_off, hci_power_off);
@@ -1403,6 +1416,7 @@
hci_unregister_sysfs(hdev);
hci_del_off_timer(hdev);
+ del_timer(&hdev->adv_timer);
destroy_workqueue(hdev->workqueue);