l2cap_conn_param_update_req
struct l2cap_conn_param_update_req req;
struct l2cap_conn_param_update_req *req;
if (cmd_len != sizeof(struct l2cap_conn_param_update_req))
req = (struct l2cap_conn_param_update_req *) data;
err = l2cap_conn_param_update_req(conn, cmd, cmd_len, data);