mirror of
https://github.com/espressif/esp-idf.git
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6c793cb8eb
1. move the app demo code to example 2. move the header files to correct path 3. move profile to profiles directory and seperate esp&std 4. some other codes 5. needs continue to cleanup the code
448 lines
14 KiB
C
Executable File
448 lines
14 KiB
C
Executable File
/******************************************************************************
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*
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* Copyright (C) 1999-2012 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 L2CAP interface functions
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*
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******************************************************************************/
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#include <stddef.h>
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#include "bt_target.h"
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#include "gki.h"
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#include "rfcdefs.h"
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#include "port_api.h"
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#include "port_int.h"
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#include "l2c_api.h"
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#include "l2cdefs.h"
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#include "rfc_int.h"
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#include "bt_defs.h"
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/*
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** Define Callback functions to be called by L2CAP
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*/
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static void RFCOMM_ConnectInd (BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id);
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static void RFCOMM_ConnectCnf (UINT16 lcid, UINT16 err);
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static void RFCOMM_ConfigInd (UINT16 lcid, tL2CAP_CFG_INFO *p_cfg);
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static void RFCOMM_ConfigCnf (UINT16 lcid, tL2CAP_CFG_INFO *p_cfg);
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static void RFCOMM_DisconnectInd (UINT16 lcid, BOOLEAN is_clear);
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static void RFCOMM_QoSViolationInd (BD_ADDR bd_addr);
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static void RFCOMM_BufDataInd (UINT16 lcid, BT_HDR *p_buf);
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static void RFCOMM_CongestionStatusInd (UINT16 lcid, BOOLEAN is_congested);
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/*******************************************************************************
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**
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** Function rfcomm_l2cap_if_init
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**
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** Description This function is called during the RFCOMM task startup
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** to register interface functions with L2CAP.
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**
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*******************************************************************************/
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void rfcomm_l2cap_if_init (void)
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{
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tL2CAP_APPL_INFO *p_l2c = &rfc_cb.rfc.reg_info;
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p_l2c->pL2CA_ConnectInd_Cb = RFCOMM_ConnectInd;
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p_l2c->pL2CA_ConnectCfm_Cb = RFCOMM_ConnectCnf;
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p_l2c->pL2CA_ConnectPnd_Cb = NULL;
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p_l2c->pL2CA_ConfigInd_Cb = RFCOMM_ConfigInd;
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p_l2c->pL2CA_ConfigCfm_Cb = RFCOMM_ConfigCnf;
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p_l2c->pL2CA_DisconnectInd_Cb = RFCOMM_DisconnectInd;
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p_l2c->pL2CA_DisconnectCfm_Cb = NULL;
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p_l2c->pL2CA_QoSViolationInd_Cb = RFCOMM_QoSViolationInd;
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p_l2c->pL2CA_DataInd_Cb = RFCOMM_BufDataInd;
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p_l2c->pL2CA_CongestionStatus_Cb = RFCOMM_CongestionStatusInd;
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p_l2c->pL2CA_TxComplete_Cb = NULL;
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L2CA_Register (BT_PSM_RFCOMM, p_l2c);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_ConnectInd
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_ConnectInd received. Allocate multiplexer control block
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** and dispatch the event to it.
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**
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*******************************************************************************/
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void RFCOMM_ConnectInd (BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id)
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{
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tRFC_MCB *p_mcb = rfc_alloc_multiplexer_channel(bd_addr, FALSE);
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UNUSED(psm);
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if ((p_mcb)&&(p_mcb->state != RFC_MX_STATE_IDLE))
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{
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/* if this is collision case */
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if ((p_mcb->is_initiator)&&(p_mcb->state == RFC_MX_STATE_WAIT_CONN_CNF))
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{
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p_mcb->pending_lcid = lcid;
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p_mcb->pending_id = id;
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/* wait random timeout (2 - 12) to resolve collision */
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/* if peer gives up then local device rejects incoming connection and continues as initiator */
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/* if timeout, local device disconnects outgoing connection and continues as acceptor */
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RFCOMM_TRACE_DEBUG ("RFCOMM_ConnectInd start timer for collision, initiator's LCID(0x%x), acceptor's LCID(0x%x)",
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p_mcb->lcid, p_mcb->pending_lcid);
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rfc_timer_start(p_mcb, (UINT16)(GKI_get_os_tick_count()%10 + 2));
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return;
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}
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else
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{
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/* we cannot accept connection request from peer at this state */
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/* don't update lcid */
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p_mcb = NULL;
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}
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}
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else
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{
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/* store mcb even if null */
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rfc_save_lcid_mcb (p_mcb, lcid);
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}
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if (p_mcb == NULL)
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{
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L2CA_ConnectRsp (bd_addr, id, lcid, L2CAP_CONN_NO_RESOURCES, 0);
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return;
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}
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p_mcb->lcid = lcid;
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONN_IND, &id);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_ConnectCnf
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_ConnectCnf received. Save L2CAP handle and dispatch
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** event to the FSM.
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**
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*******************************************************************************/
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void RFCOMM_ConnectCnf (UINT16 lcid, UINT16 result)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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if (!p_mcb)
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{
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RFCOMM_TRACE_ERROR ("RFCOMM_ConnectCnf LCID:0x%x", lcid);
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return;
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}
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if (p_mcb->pending_lcid)
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{
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/* if peer rejects our connect request but peer's connect request is pending */
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if (result != L2CAP_CONN_OK )
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{
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UINT16 i;
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UINT8 idx;
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RFCOMM_TRACE_DEBUG ("RFCOMM_ConnectCnf retry as acceptor on pending LCID(0x%x)", p_mcb->pending_lcid);
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/* remove mcb from mapping table */
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rfc_save_lcid_mcb (NULL, p_mcb->lcid);
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p_mcb->lcid = p_mcb->pending_lcid;
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p_mcb->is_initiator = FALSE;
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p_mcb->state = RFC_MX_STATE_IDLE;
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/* store mcb into mapping table */
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rfc_save_lcid_mcb (p_mcb, p_mcb->lcid);
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/* update direction bit */
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for (i = 0; i < RFCOMM_MAX_DLCI; i += 2)
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{
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if ((idx = p_mcb->port_inx[i]) != 0)
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{
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p_mcb->port_inx[i] = 0;
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p_mcb->port_inx[i+1] = idx;
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rfc_cb.port.port[idx - 1].dlci += 1;
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RFCOMM_TRACE_DEBUG ("RFCOMM MX - DLCI:%d -> %d", i, rfc_cb.port.port[idx - 1].dlci);
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}
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}
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONN_IND, &(p_mcb->pending_id));
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return;
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}
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else
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{
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RFCOMM_TRACE_DEBUG ("RFCOMM_ConnectCnf peer gave up pending LCID(0x%x)", p_mcb->pending_lcid);
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/* Peer gave up his connection request, make sure cleaning up L2CAP channel */
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L2CA_ConnectRsp (p_mcb->bd_addr, p_mcb->pending_id, p_mcb->pending_lcid, L2CAP_CONN_NO_RESOURCES, 0);
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p_mcb->pending_lcid = 0;
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}
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}
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/* Save LCID to be used in all consecutive calls to L2CAP */
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p_mcb->lcid = lcid;
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONN_CNF, &result);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_ConfigInd
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_ConfigInd received. Save parameters in the control
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** block and dispatch event to the FSM.
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**
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*******************************************************************************/
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void RFCOMM_ConfigInd (UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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if (!p_mcb)
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{
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RFCOMM_TRACE_ERROR ("RFCOMM_ConfigInd LCID:0x%x", lcid);
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return;
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}
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONF_IND, (void *)p_cfg);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_ConfigCnf
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_ConfigCnf received. Save L2CAP handle and dispatch
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** event to the FSM.
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**
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*******************************************************************************/
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void RFCOMM_ConfigCnf (UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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if (!p_mcb)
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{
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RFCOMM_TRACE_ERROR ("RFCOMM_ConfigCnf no MCB LCID:0x%x", lcid);
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return;
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}
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_CONF_CNF, (void *)p_cfg);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_QoSViolationInd
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_QoSViolationIndInd received. Dispatch event to the FSM.
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**
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*******************************************************************************/
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void RFCOMM_QoSViolationInd (BD_ADDR bd_addr)
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{
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UNUSED(bd_addr);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_DisconnectInd
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**
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** Description This is a callback function called by L2CAP when
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** L2CA_DisconnectInd received. Dispatch event to the FSM.
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**
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*******************************************************************************/
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void RFCOMM_DisconnectInd (UINT16 lcid, BOOLEAN is_conf_needed)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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if (is_conf_needed)
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{
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L2CA_DisconnectRsp (lcid);
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}
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if (!p_mcb)
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{
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RFCOMM_TRACE_WARNING ("RFCOMM_DisconnectInd LCID:0x%x", lcid);
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return;
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}
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rfc_mx_sm_execute (p_mcb, RFC_MX_EVENT_DISC_IND, NULL);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_BufDataInd
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**
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** Description This is a callback function called by L2CAP when
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** data RFCOMM frame is received. Parse the frames, check
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** the checksum and dispatch event to multiplexer or port
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** state machine depending on the frame destination.
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**
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*******************************************************************************/
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void RFCOMM_BufDataInd (UINT16 lcid, BT_HDR *p_buf)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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tPORT *p_port;
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UINT8 event;
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if (!p_mcb)
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{
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RFCOMM_TRACE_WARNING ("RFCOMM_BufDataInd LCID:0x%x", lcid);
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GKI_freebuf (p_buf);
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return;
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}
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event = rfc_parse_data (p_mcb, &rfc_cb.rfc.rx_frame, p_buf);
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/* If the frame did not pass validation just ignore it */
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if (event == RFC_EVENT_BAD_FRAME)
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{
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GKI_freebuf (p_buf);
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return;
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}
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if (rfc_cb.rfc.rx_frame.dlci == RFCOMM_MX_DLCI)
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{
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/* Take special care of the Multiplexer Control Messages */
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if (event == RFC_EVENT_UIH)
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{
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rfc_process_mx_message (p_mcb, p_buf);
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return;
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}
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/* Other multiplexer events go to state machine */
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rfc_mx_sm_execute (p_mcb, event, NULL);
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GKI_freebuf (p_buf);
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return;
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}
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/* The frame was received on the data channel DLCI, verify that DLC exists */
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if (((p_port = port_find_mcb_dlci_port (p_mcb, rfc_cb.rfc.rx_frame.dlci)) == NULL)
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|| (!p_port->rfc.p_mcb))
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{
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/* If this is a SABME on the new port, check if any appl is waiting for it */
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if (event != RFC_EVENT_SABME)
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{
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if (( p_mcb->is_initiator && !rfc_cb.rfc.rx_frame.cr)
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|| (!p_mcb->is_initiator && rfc_cb.rfc.rx_frame.cr))
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rfc_send_dm (p_mcb, rfc_cb.rfc.rx_frame.dlci, rfc_cb.rfc.rx_frame.pf);
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GKI_freebuf (p_buf);
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return;
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}
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if ((p_port = port_find_dlci_port (rfc_cb.rfc.rx_frame.dlci)) == NULL)
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{
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rfc_send_dm (p_mcb, rfc_cb.rfc.rx_frame.dlci, TRUE);
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GKI_freebuf (p_buf);
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return;
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}
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p_mcb->port_inx[rfc_cb.rfc.rx_frame.dlci] = p_port->inx;
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p_port->rfc.p_mcb = p_mcb;
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}
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if (event == RFC_EVENT_UIH)
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{
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if (p_buf->len > 0)
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rfc_port_sm_execute (p_port, event, p_buf);
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else
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GKI_freebuf (p_buf);
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if (rfc_cb.rfc.rx_frame.credit != 0)
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rfc_inc_credit (p_port, rfc_cb.rfc.rx_frame.credit);
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return;
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}
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rfc_port_sm_execute (p_port, event, NULL);
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GKI_freebuf (p_buf);
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}
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/*******************************************************************************
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**
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** Function RFCOMM_CongestionStatusInd
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**
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** Description This is a callback function called by L2CAP when
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** data RFCOMM L2CAP congestion status changes
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**
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*******************************************************************************/
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void RFCOMM_CongestionStatusInd (UINT16 lcid, BOOLEAN is_congested)
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{
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tRFC_MCB *p_mcb = rfc_find_lcid_mcb (lcid);
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if (!p_mcb)
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{
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RFCOMM_TRACE_ERROR ("RFCOMM_CongestionStatusInd dropped LCID:0x%x", lcid);
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return;
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}
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else
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{
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RFCOMM_TRACE_EVENT ("RFCOMM_CongestionStatusInd LCID:0x%x", lcid);
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}
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rfc_process_l2cap_congestion (p_mcb, is_congested);
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}
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/*******************************************************************************
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**
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** Function rfc_find_lcid_mcb
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**
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** Description This function returns MCB block supporting local cid
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**
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*******************************************************************************/
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tRFC_MCB *rfc_find_lcid_mcb (UINT16 lcid)
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{
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tRFC_MCB *p_mcb;
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if (lcid - L2CAP_BASE_APPL_CID >= MAX_L2CAP_CHANNELS)
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{
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RFCOMM_TRACE_ERROR ("rfc_find_lcid_mcb LCID:0x%x", lcid);
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return (NULL);
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}
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else
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{
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if ((p_mcb = rfc_cb.rfc.p_rfc_lcid_mcb[lcid - L2CAP_BASE_APPL_CID]) != NULL)
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{
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if (p_mcb->lcid != lcid)
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{
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RFCOMM_TRACE_WARNING ("rfc_find_lcid_mcb LCID reused LCID:0x%x current:0x%x", lcid, p_mcb->lcid);
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return (NULL);
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}
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}
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}
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return (p_mcb);
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}
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/*******************************************************************************
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**
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** Function rfc_save_lcid_mcb
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**
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** Description This function returns MCB block supporting local cid
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**
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*******************************************************************************/
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void rfc_save_lcid_mcb (tRFC_MCB *p_mcb, UINT16 lcid)
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{
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rfc_cb.rfc.p_rfc_lcid_mcb[lcid - L2CAP_BASE_APPL_CID] = p_mcb;
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}
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