/******************************************************************************
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*
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* Copyright 2003-2016 Broadcom Corporation
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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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******************************************************************************/
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/******************************************************************************
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*
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* This file contains interfaces which are internal to AVCTP.
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*
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******************************************************************************/
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#ifndef AVCT_INT_H
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#define AVCT_INT_H
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#include "avct_api.h"
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#include "avct_defs.h"
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#include "bt_common.h"
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#include "l2c_api.h"
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#include "osi/include/fixed_queue.h"
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/*****************************************************************************
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* constants
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****************************************************************************/
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/* lcb state machine events */
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enum {
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AVCT_LCB_UL_BIND_EVT,
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AVCT_LCB_UL_UNBIND_EVT,
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AVCT_LCB_UL_MSG_EVT,
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AVCT_LCB_INT_CLOSE_EVT,
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AVCT_LCB_LL_OPEN_EVT,
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AVCT_LCB_LL_CLOSE_EVT,
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AVCT_LCB_LL_MSG_EVT,
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AVCT_LCB_LL_CONG_EVT
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};
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/* "states" used for L2CAP channel */
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#define AVCT_CH_IDLE 0 /* No connection */
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#define AVCT_CH_CONN 1 /* Waiting for connection confirm */
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#define AVCT_CH_CFG 2 /* Waiting for configuration complete */
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#define AVCT_CH_OPEN 3 /* Channel opened */
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/* "no event" indicator used by ccb dealloc */
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#define AVCT_NO_EVT 0xFF
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/*****************************************************************************
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* data types
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****************************************************************************/
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/* sub control block type - common data members for tAVCT_LCB and tAVCT_BCB */
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typedef struct {
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uint16_t peer_mtu; /* peer l2c mtu */
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uint16_t ch_result; /* L2CAP connection result value */
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uint16_t ch_lcid; /* L2CAP channel LCID */
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uint8_t allocated; /* 0, not allocated. index+1, otherwise. */
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uint8_t state; /* The state machine state */
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uint8_t ch_state; /* L2CAP channel state */
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uint8_t ch_flags; /* L2CAP configuration flags */
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} tAVCT_SCB;
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/* link control block type */
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typedef struct {
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uint16_t peer_mtu; /* peer l2c mtu */
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uint16_t ch_result; /* L2CAP connection result value */
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uint16_t ch_lcid; /* L2CAP channel LCID */
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uint8_t allocated; /* 0, not allocated. index+1, otherwise. */
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uint8_t state; /* The state machine state */
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uint8_t ch_state; /* L2CAP channel state */
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uint8_t ch_flags; /* L2CAP configuration flags */
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BT_HDR* p_rx_msg; /* Message being reassembled */
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uint16_t conflict_lcid; /* L2CAP channel LCID */
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RawAddress peer_addr; /* BD address of peer */
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fixed_queue_t* tx_q; /* Transmit data buffer queue */
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bool cong; /* true, if congested */
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} tAVCT_LCB;
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/* browse control block type */
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typedef struct {
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uint16_t peer_mtu; /* peer l2c mtu */
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uint16_t ch_result; /* L2CAP connection result value */
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uint16_t ch_lcid; /* L2CAP channel LCID */
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uint8_t allocated; /* 0, not allocated. index+1, otherwise. */
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uint8_t state; /* The state machine state */
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uint8_t ch_state; /* L2CAP channel state */
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uint8_t ch_flags; /* L2CAP configuration flags */
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BT_HDR* p_tx_msg; /* Message to be sent - in case the browsing channel is not
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open when MsgReg is called */
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uint8_t ch_close; /* CCB index+1, if CCB initiated channel close */
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RawAddress peer_addr; /* BD address of peer */
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} tAVCT_BCB;
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#define AVCT_ALOC_LCB 0x01
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#define AVCT_ALOC_BCB 0x02
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/* connection control block */
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typedef struct {
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tAVCT_CC cc; /* parameters from connection creation */
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tAVCT_LCB* p_lcb; /* Associated LCB */
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tAVCT_BCB* p_bcb; /* associated BCB */
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bool ch_close; /* Whether CCB initiated channel close */
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uint8_t allocated; /* Whether LCB/BCB is allocated */
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} tAVCT_CCB;
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/* data type associated with UL_MSG_EVT */
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typedef struct {
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BT_HDR* p_buf;
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tAVCT_CCB* p_ccb;
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uint8_t label;
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uint8_t cr;
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} tAVCT_UL_MSG;
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/* union associated with lcb state machine events */
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typedef union {
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tAVCT_UL_MSG ul_msg;
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BT_HDR* p_buf;
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tAVCT_CCB* p_ccb;
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uint16_t result;
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bool cong;
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uint8_t err_code;
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} tAVCT_LCB_EVT;
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/* Control block for AVCT */
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typedef struct {
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tAVCT_LCB lcb[AVCT_NUM_LINKS]; /* link control blocks */
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tAVCT_BCB bcb[AVCT_NUM_LINKS]; /* browse control blocks */
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tAVCT_CCB ccb[AVCT_NUM_CONN]; /* connection control blocks */
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uint16_t mtu; /* our L2CAP MTU */
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uint16_t mtu_br; /* our L2CAP MTU for the Browsing channel */
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uint8_t trace_level; /* trace level */
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} tAVCT_CB;
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/*****************************************************************************
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* function declarations
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****************************************************************************/
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/* LCB function declarations */
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extern void avct_lcb_event(tAVCT_LCB* p_lcb, uint8_t event,
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tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_event(tAVCT_BCB* p_bcb, uint8_t event,
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tAVCT_LCB_EVT* p_data);
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extern void avct_close_bcb(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern tAVCT_LCB* avct_lcb_by_bcb(tAVCT_BCB* p_bcb);
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extern tAVCT_BCB* avct_bcb_by_lcb(tAVCT_LCB* p_lcb);
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extern uint8_t avct_bcb_get_last_ccb_index(tAVCT_BCB* p_bcb,
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tAVCT_CCB* p_ccb_last);
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extern tAVCT_BCB* avct_bcb_by_lcid(uint16_t lcid);
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extern tAVCT_LCB* avct_lcb_by_bd(const RawAddress& bd_addr);
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extern tAVCT_LCB* avct_lcb_alloc(const RawAddress& bd_addr);
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extern void avct_lcb_dealloc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern tAVCT_LCB* avct_lcb_by_lcid(uint16_t lcid);
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extern tAVCT_CCB* avct_lcb_has_pid(tAVCT_LCB* p_lcb, uint16_t pid);
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extern bool avct_lcb_last_ccb(tAVCT_LCB* p_lcb, tAVCT_CCB* p_ccb_last);
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/* LCB action functions */
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extern void avct_lcb_chnl_open(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_unbind_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_open_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_open_fail(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_close_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_close_cfm(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_bind_conn(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_chk_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_chnl_disc(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_bind_fail(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_cong_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_discard_msg(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_send_msg(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_msg_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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extern void avct_lcb_free_msg_ind(tAVCT_LCB* p_lcb, tAVCT_LCB_EVT* p_data);
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/* BCB action functions */
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typedef void (*tAVCT_BCB_ACTION)(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_chnl_open(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_unbind_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_open_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_open_fail(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_close_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_close_cfm(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_bind_conn(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_chk_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_chnl_disc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_bind_fail(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_cong_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_discard_msg(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_send_msg(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_msg_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_free_msg_ind(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern void avct_bcb_dealloc(tAVCT_BCB* p_bcb, tAVCT_LCB_EVT* p_data);
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extern const tAVCT_BCB_ACTION avct_bcb_action[];
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extern const uint8_t avct_lcb_pkt_type_len[];
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extern const tL2CAP_FCR_OPTS avct_l2c_br_fcr_opts_def;
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/* CCB function declarations */
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extern tAVCT_CCB* avct_ccb_alloc(tAVCT_CC* p_cc);
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extern void avct_ccb_dealloc(tAVCT_CCB* p_ccb, uint8_t event, uint16_t result,
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const RawAddress* bd_addr);
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extern uint8_t avct_ccb_to_idx(tAVCT_CCB* p_ccb);
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extern tAVCT_CCB* avct_ccb_by_idx(uint8_t idx);
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/*****************************************************************************
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* global data
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****************************************************************************/
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/* Main control block */
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extern tAVCT_CB avct_cb;
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/* L2CAP callback registration structure */
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extern const tL2CAP_APPL_INFO avct_l2c_appl;
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extern const tL2CAP_APPL_INFO avct_l2c_br_appl;
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#endif /* AVCT_INT_H */
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