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492 lines
19 KiB
492 lines
19 KiB
/*
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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 <set>
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#include <unordered_map>
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#include <vector>
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#include "stack/include/l2c_api.h"
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#include "types/hci_role.h"
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namespace bluetooth {
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namespace shim {
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/*******************************************************************************
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*
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* Function L2CA_Register
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*
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* Description Other layers call this function to register for L2CAP
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* services.
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*
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* Returns PSM to use or zero if error. Typically, the PSM returned
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* is the same as was passed in, but for an outgoing-only
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* connection to a dynamic PSM, a "virtual" PSM is returned
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* and should be used in the calls to L2CA_ConnectReq() and
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* BTM_SetSecurityLevel().
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*
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******************************************************************************/
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uint16_t L2CA_Register(uint16_t psm, const tL2CAP_APPL_INFO& p_cb_info,
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bool enable_snoop, tL2CAP_ERTM_INFO* p_ertm_info,
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uint16_t my_mtu, uint16_t required_remote_mtu,
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uint16_t sec_level);
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/*******************************************************************************
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*
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* Function L2CA_Deregister
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*
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* Description Other layers call this function to deregister for L2CAP
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* services.
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*
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* Returns void
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*
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******************************************************************************/
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void L2CA_Deregister(uint16_t psm);
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/*******************************************************************************
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*
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* Function L2CA_AllocateLePSM
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*
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* Description Other layers call this function to find an unused LE PSM for
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* L2CAP services.
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*
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* Returns LE_PSM to use if success. Otherwise returns 0.
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*
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******************************************************************************/
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uint16_t L2CA_AllocateLePSM(void);
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/*******************************************************************************
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*
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* Function L2CA_FreeLePSM
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*
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* Description Free an assigned LE PSM.
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*
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* Returns void
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*
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******************************************************************************/
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void L2CA_FreeLePSM(uint16_t psm);
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/*******************************************************************************
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*
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* Function L2CA_ConnectReq
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*
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* Description Higher layers call this function to create an L2CAP
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* connection.
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* Note that the connection is not established at this time,
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* but connection establishment gets started. The callback
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* will be invoked when connection establishes or fails.
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*
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* Returns the CID of the connection, or 0 if it failed to start
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*
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******************************************************************************/
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uint16_t L2CA_ConnectReq(uint16_t psm, const RawAddress& p_bd_addr);
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/*******************************************************************************
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*
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* Function L2CA_RegisterLECoc
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*
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* Description Other layers call this function to register for L2CAP
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* Connection Oriented Channel.
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*
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* Returns PSM to use or zero if error. Typically, the PSM returned
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* is the same as was passed in, but for an outgoing-only
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* connection to a dynamic PSM, a "virtual" PSM is returned
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* and should be used in the calls to L2CA_ConnectLECocReq()
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* and BTM_SetSecurityLevel().
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*
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******************************************************************************/
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uint16_t L2CA_RegisterLECoc(uint16_t psm, const tL2CAP_APPL_INFO& p_cb_info,
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uint16_t sec_level, tL2CAP_LE_CFG_INFO cfg);
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/*******************************************************************************
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*
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* Function L2CA_DeregisterLECoc
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*
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* Description Other layers call this function to deregister for L2CAP
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* Connection Oriented Channel.
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*
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* Returns void
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*
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******************************************************************************/
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void L2CA_DeregisterLECoc(uint16_t psm);
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/*******************************************************************************
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*
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* Function L2CA_ConnectLECocReq
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*
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* Description Higher layers call this function to create an L2CAP LE COC.
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* Note that the connection is not established at this time,
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* but connection establishment gets started. The callback
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* will be invoked when connection establishes or fails.
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*
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* Returns the CID of the connection, or 0 if it failed to start
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*
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******************************************************************************/
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uint16_t L2CA_ConnectLECocReq(uint16_t psm, const RawAddress& p_bd_addr,
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tL2CAP_LE_CFG_INFO* p_cfg);
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/*******************************************************************************
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*
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* Function L2CA_GetPeerLECocConfig
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*
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* Description Get peers configuration for LE Connection Oriented Channel.
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*
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* Return value: true if peer is connected
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*
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******************************************************************************/
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bool L2CA_GetPeerLECocConfig(uint16_t lcid, tL2CAP_LE_CFG_INFO* peer_cfg);
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/*******************************************************************************
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*
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* Function L2CA_ReconfigCreditBasedConnsReq
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*
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* Description Start reconfigure procedure on Credit Based Connection Oriented
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* Channels.
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*
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* Return value: true if peer is connected
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*
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******************************************************************************/
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bool L2CA_ReconfigCreditBasedConnsReq(const RawAddress& bd_addr,
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std::vector<uint16_t>& lcids,
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tL2CAP_LE_CFG_INFO* p_cfg);
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/*******************************************************************************
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*
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* Function L2CA_ConnectCreditBasedReq
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*
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* Description With this function L2CAP will initiate setup of up to 5 credit
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* based connections for given psm using provided configuration.
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* L2CAP will notify user on the connection result, by calling
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* pL2CA_CreditBasedConnectCfm_Cb for each cid with a result.
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*
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* Return value: vector of allocated local cids for the connection
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*
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******************************************************************************/
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extern std::vector<uint16_t> L2CA_ConnectCreditBasedReq(
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uint16_t psm, const RawAddress& p_bd_addr, tL2CAP_LE_CFG_INFO* p_cfg);
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/*******************************************************************************
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*
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* Function L2CA_ConnectCreditBasedRsp
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*
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* Description Response for the pL2CA_CreditBasedConnectInd_Cb which is the
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* indication for peer requesting credit based connection.
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*
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* Return value: true if peer is connected
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*
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******************************************************************************/
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extern bool L2CA_ConnectCreditBasedRsp(const RawAddress& p_bd_addr, uint8_t id,
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std::vector<uint16_t>& accepted_lcids,
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uint16_t result,
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tL2CAP_LE_CFG_INFO* p_cfg);
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/*******************************************************************************
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*
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* Function L2CA_DisconnectReq
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*
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* Description Higher layers call this function to disconnect a channel.
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*
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* Returns true if disconnect sent, else false
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*
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******************************************************************************/
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bool L2CA_DisconnectReq(uint16_t cid);
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bool L2CA_DisconnectLECocReq(uint16_t cid);
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/*******************************************************************************
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*
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* Function L2CA_DataWrite
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*
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* Description Higher layers call this function to write data.
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*
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* Returns L2CAP_DW_SUCCESS, if data accepted, else false
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* L2CAP_DW_CONGESTED, if data accepted and the channel is
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* congested
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* L2CAP_DW_FAILED, if error
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*
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******************************************************************************/
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uint8_t L2CA_DataWrite(uint16_t cid, BT_HDR* p_data);
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uint8_t L2CA_LECocDataWrite(uint16_t cid, BT_HDR* p_data);
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// Given a local channel identifier, |lcid|, this function returns the bound
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// remote channel identifier, |rcid|. If
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// |lcid| is not known or is invalid, this function returns false and does not
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// modify the value pointed at by |rcid|. |rcid| may be NULL.
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bool L2CA_GetRemoteCid(uint16_t lcid, uint16_t* rcid);
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/*******************************************************************************
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*
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* Function L2CA_SetIdleTimeoutByBdAddr
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*
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* Description Higher layers call this function to set the idle timeout for
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* a connection. The "idle timeout" is the amount of time that
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* a connection can remain up with no L2CAP channels on it.
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* A timeout of zero means that the connection will be torn
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* down immediately when the last channel is removed.
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* A timeout of 0xFFFF means no timeout. Values are in seconds.
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* A bd_addr is the remote BD address. If bd_addr =
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* RawAddress::kAny, then the idle timeouts for all active
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* l2cap links will be changed.
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*
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* Returns true if command succeeded, false if failed
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*
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* NOTE This timeout applies to all logical channels active on the
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* ACL link.
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******************************************************************************/
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bool L2CA_SetIdleTimeoutByBdAddr(const RawAddress& bd_addr, uint16_t timeout,
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tBT_TRANSPORT transport);
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/*******************************************************************************
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*
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* Function L2CA_SetTraceLevel
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*
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* Description This function sets the trace level for L2CAP. If called with
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* a value of 0xFF, it simply reads the current trace level.
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*
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* Returns the new (current) trace level
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*
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******************************************************************************/
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uint8_t L2CA_SetTraceLevel(uint8_t trace_level);
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/*******************************************************************************
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*
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* Function L2CA_FlushChannel
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*
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* Description This function flushes none, some or all buffers queued up
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* for xmission for a particular CID. If called with
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* L2CAP_FLUSH_CHANS_GET (0), it simply returns the number
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* of buffers queued for that CID L2CAP_FLUSH_CHANS_ALL (0xffff)
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* flushes all buffers. All other values specifies the maximum
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* buffers to flush.
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*
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* Returns Number of buffers left queued for that CID
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*
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******************************************************************************/
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uint16_t L2CA_FlushChannel(uint16_t lcid, uint16_t num_to_flush);
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/*******************************************************************************
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*
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* Function L2CA_SetAclPriority
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*
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* Description Sets the transmission priority for an ACL channel.
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* (For initial implementation only two values are valid.
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* L2CAP_PRIORITY_NORMAL and L2CAP_PRIORITY_HIGH).
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*
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* Returns true if a valid channel, else false
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*
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******************************************************************************/
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bool L2CA_SetAclPriority(const RawAddress& bd_addr, tL2CAP_PRIORITY priority);
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/*******************************************************************************
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*
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* Function L2CA_SetTxPriority
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*
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* Description Sets the transmission priority for a channel. (FCR Mode)
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*
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* Returns true if a valid channel, else false
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*
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******************************************************************************/
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bool L2CA_SetTxPriority(uint16_t cid, tL2CAP_CHNL_PRIORITY priority);
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/*******************************************************************************
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*
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* Function L2CA_SetChnlFlushability
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*
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* Description Higher layers call this function to set a channels
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* flushability flags
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*
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* Returns true if CID found, else false
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*
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******************************************************************************/
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bool L2CA_SetChnlFlushability(uint16_t cid, bool is_flushable);
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/*******************************************************************************
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*
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* Function L2CA_GetPeerFeatures
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*
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* Description Get a peers features and fixed channel map
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*
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* Parameters: BD address of the peer
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* Pointers to features and channel mask storage area
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*
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* Return value: true if peer is connected
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*
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******************************************************************************/
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bool L2CA_GetPeerFeatures(const RawAddress& bd_addr, uint32_t* p_ext_feat,
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uint8_t* p_chnl_mask);
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/*******************************************************************************
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*
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* Function L2CA_RegisterFixedChannel
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*
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* Description Register a fixed channel.
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*
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* Parameters: Fixed Channel #
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* Channel Callbacks and config
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*
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* Return value: true if registered OK
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*
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******************************************************************************/
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bool L2CA_RegisterFixedChannel(uint16_t fixed_cid,
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tL2CAP_FIXED_CHNL_REG* p_freg);
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/*******************************************************************************
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*
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* Function L2CA_ConnectFixedChnl
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*
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* Description Connect an fixed signalling channel to a remote device.
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*
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* Parameters: Fixed CID
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* BD Address of remote
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*
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* Return value: true if connection started
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*
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******************************************************************************/
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bool L2CA_ConnectFixedChnl(uint16_t fixed_cid, const RawAddress& bd_addr);
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/*******************************************************************************
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*
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* Function L2CA_SendFixedChnlData
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*
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* Description Write data on a fixed signalling channel.
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*
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* Parameters: Fixed CID
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* BD Address of remote
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* Pointer to buffer of type BT_HDR
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*
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* Return value L2CAP_DW_SUCCESS, if data accepted
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* L2CAP_DW_FAILED, if error
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*
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******************************************************************************/
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uint16_t L2CA_SendFixedChnlData(uint16_t fixed_cid, const RawAddress& rem_bda,
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BT_HDR* p_buf);
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/*******************************************************************************
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*
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* Function L2CA_RemoveFixedChnl
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*
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* Description Remove a fixed channel to a remote device.
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*
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* Parameters: Fixed CID
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* BD Address of remote
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* Idle timeout to use (or 0xFFFF if don't care)
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*
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* Return value: true if channel removed
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*
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******************************************************************************/
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bool L2CA_RemoveFixedChnl(uint16_t fixed_cid, const RawAddress& rem_bda);
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uint16_t L2CA_GetLeHandle(const RawAddress& rem_bda);
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hci_role_t L2CA_GetBleConnRole(const RawAddress& bd_addr);
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void L2CA_LeConnectionUpdate(const RawAddress& rem_bda, uint16_t min_int,
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uint16_t max_int, uint16_t latency,
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uint16_t timeout, uint16_t min_ce_len,
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uint16_t max_ce_len);
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// When GATT discovery is in progress, use the minimal connection interval, and
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// reject remote connection updates, until done.
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bool L2CA_EnableUpdateBleConnParams(const RawAddress& rem_bda, bool enable);
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/*******************************************************************************
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*
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* Function L2CA_SetLeGattTimeout
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*
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* Description Higher layers call this function to set the idle timeout for
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* a fixed channel. The "idle timeout" is the amount of time
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* that a connection can remain up with no L2CAP channels on
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* it. A timeout of zero means that the connection will be torn
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* down immediately when the last channel is removed.
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* A timeout of 0xFFFF means no timeout. Values are in seconds.
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* A bd_addr is the remote BD address. If bd_addr =
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* RawAddress::kAny, then the idle timeouts for all active
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* l2cap links will be changed.
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*
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* Returns true if command succeeded, false if failed
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*
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******************************************************************************/
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bool L2CA_SetLeGattTimeout(const RawAddress& rem_bda, uint16_t idle_tout);
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bool L2CA_UpdateBleConnParams(const RawAddress& rem_bda, uint16_t min_int,
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uint16_t max_int, uint16_t latency,
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uint16_t timeout, uint16_t min_ce_len,
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uint16_t max_ce_len);
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/*******************************************************************************
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*
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* Function L2CA_EnableUpdateBleConnParams
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*
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* Description Update BLE connection parameters.
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*
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* Parameters: BD Address of remote
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* enable flag
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*
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* Return value: true if update started
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*
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******************************************************************************/
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bool L2CA_EnableUpdateBleConnParams(const RawAddress& rem_bda, bool enable);
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/*******************************************************************************
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*
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* Function L2CA_GetBleConnRole
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*
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* Description This function returns the connection role.
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*
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* Returns link role.
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*
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******************************************************************************/
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hci_role_t L2CA_GetBleConnRole(const RawAddress& bd_addr);
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/**
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* Check whether an ACL or LE link to the remote device is established
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*/
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bool L2CA_IsLinkEstablished(const RawAddress& bd_addr, tBT_TRANSPORT transport);
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void L2CA_ConnectForSecurity(const RawAddress& bd_addr);
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// Set bonding state to acquire/release link refcount
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void L2CA_SetBondingState(const RawAddress& p_bd_addr, bool is_bonding);
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// Indicated by shim stack manager that GD L2cap is enabled but Security is not
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void L2CA_UseLegacySecurityModule();
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void L2CA_SwitchRoleToCentral(const RawAddress& addr);
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bool L2CA_ReadRemoteVersion(const RawAddress& addr, uint8_t* lmp_version,
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uint16_t* manufacturer, uint16_t* lmp_sub_version);
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uint8_t* L2CA_ReadRemoteFeatures(const RawAddress& addr);
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void L2CA_DisconnectLink(const RawAddress& remote);
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uint16_t L2CA_GetNumLinks();
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bool L2CA_IsLeLink(uint16_t acl_handle);
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void L2CA_ReadConnectionAddr(const RawAddress& pseudo_addr,
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RawAddress& conn_addr, uint8_t* p_addr_type);
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bool L2CA_ReadRemoteConnectionAddr(const RawAddress& pseudo_addr,
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RawAddress& conn_addr, uint8_t* p_addr_type);
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} // namespace shim
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} // namespace bluetooth
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