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