When the current LE connection parameters of a slave connection do not
match up with the controller defined values, then trigger the connection
update procedure to allow adjusting them.
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
net/bluetooth/l2cap_core.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index cbf6b9d1c404..565afb78296a 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1481,6 +1481,25 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
if (hci_blacklist_lookup(hcon->hdev, &hcon->dst, dst_type))
return;
+ /* For LE slave connections, make sure the connection interval
+ * is in the range of the minium and maximum interval that has
+ * been configured for this connection. If not, then trigger
+ * the connection update procedure.
+ */
+ if (!(hcon->link_mode & HCI_LM_MASTER) &&
+ (hcon->le_conn_interval < hcon->le_conn_min_interval ||
+ hcon->le_conn_interval > hcon->le_conn_max_interval)) {
+ struct l2cap_conn_param_update_req req;
+
+ req.min = cpu_to_le16(hcon->le_conn_min_interval);
+ req.max = cpu_to_le16(hcon->le_conn_max_interval);
+ req.latency = cpu_to_le16(hcon->le_conn_latency);
+ req.to_multiplier = cpu_to_le16(hcon->le_supv_timeout);
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_CONN_PARAM_UPDATE_REQ, sizeof(req), &req);
+ }
+
l2cap_chan_lock(pchan);
chan = pchan->ops->new_connection(pchan);
--
1.9.3
--
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