| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 055/117] Revert "Bluetooth: Align minimum encryption key size for LE and BR/EDR connections" | Date | Thu, 20 Jun 2019 19:56:29 +0200 |
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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 745f5c5f2ac14ac1cbb7fe3cbdc893c9d1af1356 which is commit d5bb334a8e171b262e48f378bd2096c0ea458265 upstream.
Lots of people have reported issues with this patch, and as there does not seem to be a fix going into Linus's kernel tree any time soon, revert the commit in the stable trees so as to get people's machines working properly again.
Reported-by: Vasily Khoruzhick <anarsoul@gmail.com> Reported-by: Hans de Goede <hdegoede@redhat.com> Cc: Jeremy Cline <jeremy@jcline.org> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- include/net/bluetooth/hci_core.h | 3 --- net/bluetooth/hci_conn.c | 8 -------- 2 files changed, 11 deletions(-)
--- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -176,9 +176,6 @@ struct adv_info { #define HCI_MAX_SHORT_NAME_LENGTH 10 -/* Min encryption key size to match with SMP */ -#define HCI_MIN_ENC_KEY_SIZE 7 - /* Default LE RPA expiry time, 15 minutes */ #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1165,14 +1165,6 @@ int hci_conn_check_link_mode(struct hci_ !test_bit(HCI_CONN_ENCRYPT, &conn->flags)) return 0; - /* The minimum encryption key size needs to be enforced by the - * host stack before establishing any L2CAP connections. The - * specification in theory allows a minimum of 1, but to align - * BR/EDR and LE transports, a minimum of 7 is chosen. - */ - if (conn->enc_key_size < HCI_MIN_ENC_KEY_SIZE) - return 0; - return 1; }
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