From 6d5650c4e519794fcc441635ea54f47d68140c93 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Tue, 24 Jun 2014 13:15:51 +0300 Subject: [PATCH] Bluetooth: Don't store debug keys if flag for them is not set Instead of waiting for a disconnection to occur to remove a debug key simply never store it in the list to begin with. This means we can also remove the debug keys check when looking up keys in hci_link_key_request_evt(). Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_event.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index b0fdeec2f2ca..c92c5a020fe7 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3066,12 +3066,6 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) BT_DBG("%s found key type %u for %pMR", hdev->name, key->type, &ev->bdaddr); - if (!test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags) && - key->type == HCI_LK_DEBUG_COMBINATION) { - BT_DBG("%s ignoring debug key", hdev->name); - goto not_found; - } - conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); if (conn) { if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || @@ -3141,8 +3135,18 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) mgmt_new_link_key(hdev, key, persistent); - if (conn) + /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag + * is set. If it's not set simply remove the key from the kernel + * list (we've still notified user space about it but with + * store_hint being 0). + */ + if (key->type == HCI_LK_DEBUG_COMBINATION && + !test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags)) { + list_del(&key->list); + kfree(key); + } else if (conn) { conn->flush_key = !persistent; + } unlock: hci_dev_unlock(hdev);