[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>

2 files changed, 16 insertions, 4 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 55576e84882..3cc29491931 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -72,8 +72,6 @@ enum {
         HCI_INQUIRY,
 
         HCI_RAW,
-
-        HCI_SECMGR
 };
 
 /* HCI ioctl defines */
@@ -86,6 +84,7 @@ enum {
 #define HCIGETDEVINFO   _IOR('H', 211, int)
 #define HCIGETCONNLIST  _IOR('H', 212, int)
 #define HCIGETCONNINFO  _IOR('H', 213, int)
+#define HCIGETAUTHINFO  _IOR('H', 215, int)
 
 #define HCISETRAW       _IOW('H', 220, int)
 #define HCISETSCAN      _IOW('H', 221, int)
@@ -97,8 +96,6 @@ enum {
 #define HCISETACLMTU    _IOW('H', 227, int)
 #define HCISETSCOMTU    _IOW('H', 228, int)
 
-#define HCISETSECMGR    _IOW('H', 230, int)
-
 #define HCIINQUIRY      _IOR('H', 240, int)
 
 /* HCI timeouts */
@@ -203,6 +200,14 @@ enum {
 #define HCI_LM_RELIABLE 0x0010
 #define HCI_LM_SECURE   0x0020
 
+/* Authentication types */
+#define HCI_AT_NO_BONDING               0x00
+#define HCI_AT_NO_BONDING_MITM          0x01
+#define HCI_AT_DEDICATED_BONDING        0x02
+#define HCI_AT_DEDICATED_BONDING_MITM   0x03
+#define HCI_AT_GENERAL_BONDING          0x04
+#define HCI_AT_GENERAL_BONDING_MITM     0x05
+
 /* -----  HCI Commands ---- */
 #define HCI_OP_INQUIRY                  0x0401
 struct hci_cp_inquiry {
@@ -1001,6 +1006,11 @@ struct hci_conn_info_req {
         struct   hci_conn_info conn_info[0];
 };
 
+struct hci_auth_info_req {
+        bdaddr_t bdaddr;
+        __u8     type;
+};
+
 struct hci_inquiry_req {
         __u16 dev_id;
         __u16 flags;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 28fbd0caa53..cbf75109468 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);