Bluetooth: Allow only one LE connection attempt

Only one outgoing LE connection attempt should be possible.
hci_connect() will now return -EBUSY in case there's another pending
outgoing connection.

Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 1458667b2845..2fcced377e50 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -483,6 +483,11 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
         if (type == LE_LINK) {
                 le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst);
                 if (!le) {
+                        le = hci_conn_hash_lookup_state(hdev, LE_LINK,
+                                                        BT_CONNECT);
+                        if (le)
+                                return ERR_PTR(-EBUSY);
+
                         le = hci_conn_add(hdev, LE_LINK, dst);
                         if (!le)
                                 return ERR_PTR(-ENOMEM);