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Bluetooth: Add flag to track STK encryption

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There are certain subtle differences in behavior when we're encrypted
with the STK, such as allowing re-encryption even though the security
level stays the same. Because of this, add a flag to track whether we're
encrypted with an STK or not.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-07-01 19:14:12 +03:00 • committed by Marcel Holtmann
parent 854f47278f
commit fe59a05f94
3 changed files with 8 additions and 0 deletions
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3
net/bluetooth/hci_event.c
View file

@ -4365,8 +4365,11 @@ static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
* using a distributed LTK.
*/
if (ltk->type == SMP_STK) {
set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
list_del(&ltk->list);
kfree(ltk);
} else {
clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
}
hci_dev_unlock(hdev);