Bluetooth: Track LE connection parameter update event

When the LE controller changes its connection parameters, it will send
a connection parameter update event. Make sure that the new set of
parameters are stored in hci_conn struct and thus will properly update
the previous values retrieved from the connection complete event.

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

1 files changed, 27 insertions, 0 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3d4741d789d3..e239435312dc 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -4070,6 +4070,29 @@ unlock:
         hci_dev_unlock(hdev);
 }
 
+static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
+                                            struct sk_buff *skb)
+{
+        struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
+        struct hci_conn *conn;
+
+        BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
+
+        if (ev->status)
+                return;
+
+        hci_dev_lock(hdev);
+
+        conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+        if (conn) {
+                conn->le_conn_interval = le16_to_cpu(ev->interval);
+                conn->le_conn_latency = le16_to_cpu(ev->latency);
+                conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
+        }
+
+        hci_dev_unlock(hdev);
+}
+
 /* This function requires the caller holds hdev->lock */
 static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr,
                                   u8 addr_type)
@@ -4269,6 +4292,10 @@ static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
                 hci_le_conn_complete_evt(hdev, skb);
                 break;
 
+        case HCI_EV_LE_CONN_UPDATE_COMPLETE:
+                hci_le_conn_update_complete_evt(hdev, skb);
+                break;
+
         case HCI_EV_LE_ADVERTISING_REPORT:
                 hci_le_adv_report_evt(hdev, skb);
                 break;