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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-13 09:28:42 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-15 11:54:59 +0200
commite9d38b08d7a68ede91280036a6657693387e2bcd (patch)
tree2f3e9b75fc0b61b77e2c106752bc45d7c1e3d426
parent4794604a68922b179c334a7a2e6942ffa2e6b893 (diff)
Revert "Bluetooth: Align minimum encryption key size for LE and BR/EDR connections"
This reverts commit 2fa7a155b25160696cd77cdd995536cf5e172e20 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>
-rw-r--r--include/net/bluetooth/hci_core.h3
-rw-r--r--net/bluetooth/hci_conn.c8
2 files changed, 0 insertions, 11 deletions
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 6cd4d5b48239..b619a190ff12 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -178,9 +178,6 @@ 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)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index fe4fb0c1fa61..cc061495f653 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1165,14 +1165,6 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
!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;
}