Bluetooth: Clear advertising cache before scanning

The LE advertising cache should be cleared before performing a LE
scanning. This will force the cache to contain only fresh advertising
entries.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 27 insertions, 0 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index db74958d3ad9..056f7b2fa02f 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -839,6 +839,29 @@ static void hci_cc_read_local_oob_data_reply(struct hci_dev *hdev,
                                                 rp->randomizer, rp->status);
 }
 
+static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
+                                        struct sk_buff *skb)
+{
+        struct hci_cp_le_set_scan_enable *cp;
+        __u8 status = *((__u8 *) skb->data);
+
+        BT_DBG("%s status 0x%x", hdev->name, status);
+
+        if (status)
+                return;
+
+        cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
+        if (!cp)
+                return;
+
+        hci_dev_lock(hdev);
+
+        if (cp->enable == 0x01)
+                hci_adv_entries_clear(hdev);
+
+        hci_dev_unlock(hdev);
+}
+
 static inline void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 {
         BT_DBG("%s status 0x%x", hdev->name, status);
@@ -1814,6 +1837,10 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
                 hci_cc_user_confirm_neg_reply(hdev, skb);
                 break;
 
+        case HCI_OP_LE_SET_SCAN_ENABLE:
+                hci_cc_le_set_scan_enable(hdev, skb);
+                break;
+
         default:
                 BT_DBG("%s opcode 0x%x", hdev->name, opcode);
                 break;