[Bluetooth] Export details about authentication requirements

With the Simple Pairing support, the authentication requirements are
an explicit setting during the bonding process. Track and enforce the
requirements and allow higher layers like L2CAP and RFCOMM to increase
them if needed.

This patch introduces a new IOCTL that allows to query the current
authentication requirements. It is also possible to detect Simple
Pairing support in the kernel this way.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 28fbd0caa534..cbf751094688 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -168,6 +168,7 @@ struct hci_conn {
 	__u16            pkt_type;
 	__u16            link_policy;
 	__u32		 link_mode;
+	__u8             auth_type;
 	__u8             power_save;
 	unsigned long	 pend;
 
@@ -422,6 +423,7 @@ int hci_get_dev_list(void __user *arg);
 int hci_get_dev_info(void __user *arg);
 int hci_get_conn_list(void __user *arg);
 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
+int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 int hci_inquiry(void __user *arg);
 
 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);