| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <cstdint> |
| |
| namespace bluetooth { |
| namespace l2cap { |
| |
| using Psm = uint16_t; |
| constexpr Psm kDefaultPsm = 0; // Invalid Psm as a default value |
| |
| constexpr bool IsPsmValid(Psm psm) { |
| // See Core spec 5.1 Vol 3 Part A 4.2 for definition |
| return (psm & 0x0101u) == 0x0001u; |
| } |
| |
| } // namespace l2cap |
| } // namespace bluetooth |