[Bluetooth] Add security manager flags and options

This patch adds the initial flags and options for the upcoming kernel
based Bluetooth security manager.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/hci.h

@@ -68,7 +68,9 @@ enum {
 	HCI_ENCRYPT,
 	HCI_INQUIRY,
 
-	HCI_RAW
+	HCI_RAW,
+
+	HCI_SECMGR
 };
 
 /* HCI ioctl defines */
@@ -91,7 +93,8 @@ enum {
 #define HCISETLINKMODE	_IOW('H', 226, int)
 #define HCISETACLMTU	_IOW('H', 227, int)
 #define HCISETSCOMTU	_IOW('H', 228, int)
-#define HCISETRAWVND	_IOW('H', 229, int)
+
+#define HCISETSECMGR	_IOW('H', 230, int)
 
 #define HCIINQUIRY	_IOR('H', 240, int)
 
@@ -324,20 +327,28 @@ struct hci_cp_inquiry {
 #define OCF_INQUIRY_CANCEL	0x0002
 
 #define OCF_LINK_KEY_REPLY	0x000B
-#define OCF_LINK_KEY_NEG_REPLY	0x000C
 struct hci_cp_link_key_reply {
 	bdaddr_t bdaddr;
 	__u8     link_key[16];
 } __attribute__ ((packed));
 
+#define OCF_LINK_KEY_NEG_REPLY	0x000C
+struct hci_cp_link_key_neg_reply {
+	bdaddr_t bdaddr;
+} __attribute__ ((packed));
+
 #define OCF_PIN_CODE_REPLY	0x000D
-#define OCF_PIN_CODE_NEG_REPLY	0x000E
 struct hci_cp_pin_code_reply {
 	bdaddr_t bdaddr;
 	__u8     pin_len;
 	__u8     pin_code[16];
 } __attribute__ ((packed));
 
+#define OCF_PIN_CODE_NEG_REPLY	0x000E
+struct hci_cp_pin_code_neg_reply {
+	bdaddr_t bdaddr;
+} __attribute__ ((packed));
+
 #define OCF_CHANGE_CONN_PTYPE	0x000F
 struct hci_cp_change_conn_ptype {
 	__u16    handle;

net/bluetooth/hci_event.c

@@ -585,7 +585,6 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 		if (test_bit(HCI_ENCRYPT, &hdev->flags))
 			conn->link_mode |= HCI_LM_ENCRYPT;
 
-
 		/* Set link policy */
 		if (conn->type == ACL_LINK && hdev->link_policy) {
 			struct hci_cp_write_link_policy cp;
@@ -781,6 +780,21 @@ static inline void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *
 	hci_dev_unlock(hdev);
 }
 
+/* Pin Code Request*/
+static inline void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
+{
+}
+
+/* Link Key Request */
+static inline void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
+{
+}
+
+/* Link Key Notification */
+static inline void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
+{
+}
+
 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct hci_event_hdr *hdr = (struct hci_event_hdr *) skb->data;
@@ -833,6 +847,18 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
 		hci_encrypt_change_evt(hdev, skb);
 		break;
 
+	case HCI_EV_PIN_CODE_REQ:
+		hci_pin_code_request_evt(hdev, skb);
+		break;
+
+	case HCI_EV_LINK_KEY_REQ:
+		hci_link_key_request_evt(hdev, skb);
+		break;
+
+	case HCI_EV_LINK_KEY_NOTIFY:
+		hci_link_key_notify_evt(hdev, skb);
+		break;
+
 	case HCI_EV_CMD_STATUS:
 		cs = (struct hci_ev_cmd_status *) skb->data;
 		skb_pull(skb, sizeof(cs));

net/bluetooth/hci_sock.c

@@ -185,6 +185,17 @@ static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsign
 
 		return 0;
 
+	case HCISETSECMGR:
+		if (!capable(CAP_NET_ADMIN))
+			return -EACCES;
+
+		if (arg)
+			set_bit(HCI_SECMGR, &hdev->flags);
+		else
+			clear_bit(HCI_SECMGR, &hdev->flags);
+
+		return 0;
+
 	case HCIGETCONNINFO:
 		return hci_get_conn_info(hdev, (void __user *)arg);