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Bluetooth: Add debug setting for changing minimum encryption key size

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For testing and qualification purposes it is useful to allow changing
the minimum encryption key size value that the host stack is going to
enforce. This adds a new debugfs setting min_encrypt_key_size to achieve
this functionality.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2019-07-16 20:34:41 +02:00 • committed by Johan Hedberg
parent 6600c0808e
commit 58a96fc353
4 changed files with 34 additions and 1 deletions
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2
net/bluetooth/l2cap_core.c
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@ -1361,7 +1361,7 @@ static bool l2cap_check_enc_key_size(struct hci_conn *hcon)
* actually encrypted before enforcing a key size.
*/
return (!test_bit(HCI_CONN_ENCRYPT, &hcon->flags) ||
hcon->enc_key_size >= HCI_MIN_ENC_KEY_SIZE);
hcon->enc_key_size >= hcon->hdev->min_enc_key_size);
}
static void l2cap_do_start(struct l2cap_chan *chan)