Bluetooth: Add blacklist support for incoming connections

In some circumstances it could be desirable to reject incoming
connections on the baseband level. This patch adds this feature through
two new ioctl's: HCIBLOCKADDR and HCIUNBLOCKADDR. Both take a simple
Bluetooth address as a parameter. BDADDR_ANY can be used with
HCIUNBLOCKADDR to remove all devices from the blacklist.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 12 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index fc0c502d9fd1..ca2518e0574e 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -100,6 +100,9 @@ enum {
 #define HCISETACLMTU    _IOW('H', 227, int)
 #define HCISETSCOMTU    _IOW('H', 228, int)
 
+#define HCIBLOCKADDR    _IOW('H', 230, int)
+#define HCIUNBLOCKADDR  _IOW('H', 231, int)
+
 #define HCIINQUIRY      _IOR('H', 240, int)
 
 /* HCI timeouts */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index e42f6ed5421c..ffc637748b87 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -62,6 +62,11 @@ struct hci_conn_hash {
         unsigned int     sco_num;
 };
 
+struct bdaddr_list {
+        struct list_head list;
+        bdaddr_t bdaddr;
+};
+
 struct hci_dev {
         struct list_head list;
         spinlock_t      lock;
@@ -127,6 +132,7 @@ struct hci_dev {
 
         struct inquiry_cache    inq_cache;
         struct hci_conn_hash    conn_hash;
+        struct bdaddr_list      blacklist;
 
         struct hci_dev_stats    stat;
 
@@ -424,6 +430,9 @@ 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);
 
+struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
+int hci_blacklist_clear(struct hci_dev *hdev);
+
 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 
 int hci_recv_frame(struct sk_buff *skb);