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 "l2cap/mtu.h" 20 21 namespace bluetooth { 22 namespace l2cap { 23 namespace classic { 24 25 /** 26 * Configuration Option specified by L2CAP Channel user on a dynamic channel. L2CAP module will configure the channel 27 * based on user provided option. 28 */ 29 struct DynamicChannelConfigurationOption { 30 enum class RetransmissionAndFlowControlMode { 31 L2CAP_BASIC, 32 ENHANCED_RETRANSMISSION, 33 ENHANCED_RETRANSMISSION_OPTIONAL, 34 }; 35 /** 36 * Retransmission and flow control mode. Currently L2CAP_BASIC and ENHANCED_RETRANSMISSION. 37 * If the remote doesn't support a mode, it might fall back to basic, as this is a negotiable option. 38 */ 39 RetransmissionAndFlowControlMode channel_mode = RetransmissionAndFlowControlMode::L2CAP_BASIC; 40 41 /** 42 * Maximum SDU size that the L2CAP Channel user is able to process. 43 */ 44 Mtu incoming_mtu = kDefaultClassicMtu; 45 46 /** 47 * Minimum MTU that we enforce the remote channel to have 48 */ 49 Mtu minimal_remote_mtu = kMinimumClassicMtu; 50 }; 51 52 } // namespace classic 53 } // namespace l2cap 54 } // namespace bluetooth 55