Bluetooth: Track number of LE slave connections

Most (probably all) controllers can only deal with a single slave LE
connection at a time. This patch adds a counter for such connections so
that the number can be quickly looked up without iterating the
connections list.

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

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 3de000f..73e16ec 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -83,6 +83,7 @@ struct hci_conn_hash {
        unsigned int     amp_num;
        unsigned int     sco_num;
        unsigned int     le_num;
+       unsigned int     le_num_slave;
 };
 
 struct bdaddr_list {
@@ -575,6 +576,8 @@ static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
                break;
        case LE_LINK:
                h->le_num++;
+               if (c->role == HCI_ROLE_SLAVE)
+                       h->le_num_slave++;
                break;
        case SCO_LINK:
        case ESCO_LINK:
@@ -599,6 +602,8 @@ static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
                break;
        case LE_LINK:
                h->le_num--;
+               if (c->role == HCI_ROLE_SLAVE)
+                       h->le_num_slave--;
                break;
        case SCO_LINK:
        case ESCO_LINK: