@@ -82,6 +82,8 @@ struct bt_power {
#define BT_CHANNEL_POLICY 10
+#define BT_LE_CONN_PARAM 11
+
/* BR/EDR only (default policy)
* AMP controllers cannot be used.
* Channel move requests from the remote device are denied.
@@ -454,6 +454,15 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
err = -EFAULT;
break;
+ case BT_LE_CONN_PARAM:
+
+ len = min_t(unsigned int, len,
+ sizeof(struct hci_cp_le_create_conn));
+ if (copy_to_user(optval, (char *) &chan->cp_le, len))
+ err = -EFAULT;
+
+ break;
+
default:
err = -ENOPROTOOPT;
break;
@@ -749,6 +758,20 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
break;
+ case BT_LE_CONN_PARAM:
+
+ if (sizeof(struct hci_cp_le_create_conn) != optlen) {
+ err = -EINVAL;
+ break;
+ }
+
+ if (copy_from_user((char *) &chan->cp_le, optval, optlen)) {
+ err = -EFAULT;
+ break;
+ }
+
+ break;
+
default:
err = -ENOPROTOOPT;
break;
* Userspace can now specify connection parameters to override the defaults prior to connecting to the device. * The intention is that setsockopt() will be called before connect() is called in userspace apps and BlueZ libraries. * It is critical to set these parameters prior to connect() to avoid issues with hardware that must arbitrate the antenna access between Bluetooth LE and things like WiFi. Aggressive connect (and scan) window and interval values result in significant WiFi degradation. * Reduces the need to call the hci LE Connection Update Command to override the "defaults" when the desired values are known ahead of time. * Add BT_LE_CONN_PARAM socket option. Signed-off-by: Kyle Manna <kyle@kylemanna.com> --- include/net/bluetooth/bluetooth.h | 2 ++ net/bluetooth/l2cap_sock.c | 23 +++++++++++++++++++++++ 2 files changed, 25 insertions(+)