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1 /*
2  * Copyright 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include <cstdint>
20 
21 namespace bluetooth {
22 namespace l2cap {
23 
24 using Cid = uint16_t;
25 
26 constexpr Cid kInvalidCid = 0;
27 constexpr Cid kFirstFixedChannel = 1;
28 constexpr Cid kLastFixedChannel = 63;
29 constexpr Cid kFirstDynamicChannel = kLastFixedChannel + 1;
30 constexpr Cid kLastDynamicChannel = (uint16_t)(0xffff);
31 
32 constexpr Cid kClassicSignallingCid = 1;
33 constexpr Cid kConnectionlessCid = 2;
34 constexpr Cid kLeAttributeCid = 4;
35 constexpr Cid kLeSignallingCid = 5;
36 constexpr Cid kSmpCid = 6;
37 constexpr Cid kSmpBrCid = 7;
38 
39 constexpr Cid kClassicPairingTriggerCid = kLastFixedChannel - 1;
40 
41 }  // namespace l2cap
42 }  // namespace bluetooth
43