1093 lines
36 KiB
C
1093 lines
36 KiB
C
/******************************************************************************
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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 module contains functions for port emulation entity and RFCOMM
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* communications
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*
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******************************************************************************/
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#include <string.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 "btm_int.h"
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#include "btm_api.h"
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#include "port_int.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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** Local function definitions
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*/
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UINT32 port_rfc_send_tx_data (tPORT *p_port);
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void port_rfc_closed (tPORT *p_port, UINT8 res);
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void port_get_credits (tPORT *p_port, UINT8 k);
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/*******************************************************************************
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**
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** Function port_open_continue
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**
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** Description This function is called after security manager completes
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** required security checks.
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**
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** Returns void
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**
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*******************************************************************************/
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int port_open_continue (tPORT *p_port)
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{
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tRFC_MCB *p_mcb;
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RFCOMM_TRACE_EVENT ("port_open_continue, p_port:%p", p_port);
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/* Check if multiplexer channel has already been established */
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if ((p_mcb = rfc_alloc_multiplexer_channel (p_port->bd_addr, TRUE)) == NULL) {
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RFCOMM_TRACE_WARNING ("port_open_continue no mx channel");
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port_release_port (p_port);
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return (PORT_NO_RESOURCES);
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}
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p_port->rfc.p_mcb = p_mcb;
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p_mcb->port_inx[p_port->dlci] = p_port->inx;
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/* Connection is up and we know local and remote features, select MTU */
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port_select_mtu (p_port);
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if (p_mcb->state == RFC_MX_STATE_CONNECTED) {
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RFCOMM_ParNegReq (p_mcb, p_port->dlci, p_port->mtu);
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} else if ((p_mcb->state == RFC_MX_STATE_IDLE)
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|| (p_mcb->state == RFC_MX_STATE_DISC_WAIT_UA)) {
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/* In RFC_MX_STATE_IDLE state, MX state machine will create connection */
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/* In RFC_MX_STATE_DISC_WAIT_UA state, MX state machine will recreate connection */
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/* after disconnecting is completed */
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RFCOMM_StartReq (p_mcb);
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} else {
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/* MX state machine ignores RFC_MX_EVENT_START_REQ in these states */
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/* When it enters RFC_MX_STATE_CONNECTED, it will check any openning ports */
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RFCOMM_TRACE_DEBUG ("port_open_continue: mx state(%d) mx channel is openning", p_mcb->state);
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}
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return (PORT_SUCCESS);
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}
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/*******************************************************************************
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**
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** Function port_start_control
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**
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** Description This function is called in the BTU_TASK context to
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** send control information
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**
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** Returns void
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**
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*******************************************************************************/
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void port_start_control (tPORT *p_port)
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{
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tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
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if (p_mcb == NULL) {
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return;
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}
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RFCOMM_ControlReq (p_mcb, p_port->dlci, &p_port->local_ctrl);
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}
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/*******************************************************************************
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**
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** Function port_start_par_neg
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**
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** Description This function is called in the BTU_TASK context to
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** send configuration information
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**
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** Returns void
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**
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*******************************************************************************/
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void port_start_par_neg (tPORT *p_port)
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{
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tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
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if (p_mcb == NULL) {
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return;
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}
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RFCOMM_PortNegReq (p_mcb, p_port->dlci, &p_port->user_port_pars);
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}
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/*******************************************************************************
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**
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** Function port_start_close
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**
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** Description This function is called in the BTU_TASK context to
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** release DLC
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**
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** Returns void
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**
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*******************************************************************************/
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void port_start_close (tPORT *p_port)
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{
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tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
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UINT8 old_signals;
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UINT32 events = 0;
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/* At first indicate to the user that signals on the connection were dropped */
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p_port->line_status |= LINE_STATUS_FAILED;
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old_signals = p_port->peer_ctrl.modem_signal;
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p_port->peer_ctrl.modem_signal &= ~(PORT_DTRDSR_ON | PORT_CTSRTS_ON | PORT_DCD_ON);
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events |= port_get_signal_changes (p_port, old_signals, p_port->peer_ctrl.modem_signal);
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if (p_port->ev_mask & PORT_EV_CONNECT_ERR) {
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events |= PORT_EV_CONNECT_ERR;
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}
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if (p_port->ev_mask & PORT_EV_ERR) {
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events |= PORT_EV_ERR;
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}
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if ((p_port->p_callback != NULL) && events) {
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p_port->p_callback (events, p_port->inx);
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}
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/* Check if RFCOMM side has been closed while the message was queued */
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if ((p_mcb == NULL) || (p_port->rfc.state == RFC_STATE_CLOSED)) {
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/* Call management callback function before calling port_release_port() to clear tPort */
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if (p_port->p_mgmt_callback) {
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p_port->p_mgmt_callback (PORT_CLOSED, p_port->inx);
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}
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port_release_port (p_port);
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} else {
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RFCOMM_DlcReleaseReq (p_mcb, p_port->dlci);
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}
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}
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/*******************************************************************************
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**
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** Function PORT_StartCnf
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**
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** Description This function is called from the RFCOMM layer when
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** establishing of the multiplexer channel is completed.
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** Continue establishing of the connection for all ports that
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** are in the OPENING state
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**
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*******************************************************************************/
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void PORT_StartCnf (tRFC_MCB *p_mcb, UINT16 result)
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{
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tPORT *p_port;
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int i;
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BOOLEAN no_ports_up = TRUE;
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RFCOMM_TRACE_EVENT ("PORT_StartCnf result:%d", result);
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p_port = &rfc_cb.port.port[0];
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for (i = 0; i < MAX_RFC_PORTS; i++, p_port++) {
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if (p_port->rfc.p_mcb == p_mcb) {
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no_ports_up = FALSE;
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if (result == RFCOMM_SUCCESS) {
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RFCOMM_ParNegReq (p_mcb, p_port->dlci, p_port->mtu);
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} else {
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RFCOMM_TRACE_WARNING ("PORT_StartCnf failed result:%d", result);
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/* Warning: result is also set to 4 when l2cap connection
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fails due to l2cap connect cnf (no_resources) */
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if ( result == HCI_ERR_PAGE_TIMEOUT ) {
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p_port->error = PORT_PAGE_TIMEOUT;
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} else {
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p_port->error = PORT_START_FAILED;
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}
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rfc_release_multiplexer_channel (p_mcb);
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p_port->rfc.p_mcb = NULL;
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/* Send event to the application */
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if (p_port->p_callback && (p_port->ev_mask & PORT_EV_CONNECT_ERR)) {
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(p_port->p_callback)(PORT_EV_CONNECT_ERR, p_port->inx);
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}
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if (p_port->p_mgmt_callback) {
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p_port->p_mgmt_callback (PORT_START_FAILED, p_port->inx);
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}
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port_release_port (p_port);
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}
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}
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}
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/* There can be a situation when after starting connection, user closes the */
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/* port, we can catch it here to close multiplexor channel */
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if (no_ports_up) {
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rfc_check_mcb_active (p_mcb);
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}
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}
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/*******************************************************************************
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**
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** Function PORT_StartInd
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**
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** Description This function is called from the RFCOMM layer when
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** some peer device wants to establish a multiplexer
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** connection. Check if there are any ports open with this
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** or not assigned multiplexer.
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**
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*******************************************************************************/
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void PORT_StartInd (tRFC_MCB *p_mcb)
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{
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tPORT *p_port;
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int i;
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RFCOMM_TRACE_EVENT ("PORT_StartInd");
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p_port = &rfc_cb.port.port[0];
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for (i = 0; i < MAX_RFC_PORTS; i++, p_port++) {
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if ((p_port->rfc.p_mcb == NULL)
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|| (p_port->rfc.p_mcb == p_mcb)) {
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RFCOMM_TRACE_DEBUG("PORT_StartInd, RFCOMM_StartRsp RFCOMM_SUCCESS: p_mcb:%p", p_mcb);
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RFCOMM_StartRsp (p_mcb, RFCOMM_SUCCESS);
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return;
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}
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}
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RFCOMM_StartRsp (p_mcb, RFCOMM_ERROR);
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}
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/*******************************************************************************
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**
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** Function PORT_ParNegInd
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**
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** Description This function is called from the RFCOMM layer to change
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** DLCI parameters (currently only MTU is negotiated).
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** If can not find the port do not accept the request.
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** Otherwise save the MTU size supported by the peer.
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**
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*******************************************************************************/
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void PORT_ParNegInd (tRFC_MCB *p_mcb, UINT8 dlci, UINT16 mtu, UINT8 cl, UINT8 k)
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{
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tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
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UINT8 our_cl;
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UINT8 our_k;
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RFCOMM_TRACE_EVENT ("PORT_ParNegInd dlci:%d mtu:%d", dlci, mtu);
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if (!p_port) {
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/* This can be a first request for this port */
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p_port = port_find_dlci_port (dlci);
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if (!p_port) {
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/* If the port cannot be opened, send a DM. Per Errata 1205 */
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rfc_send_dm(p_mcb, dlci, FALSE);
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/* check if this is the last port open, some headsets have
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problem, they don't disconnect if we send DM */
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rfc_check_mcb_active( p_mcb );
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RFCOMM_TRACE_EVENT( "PORT_ParNegInd: port not found" );
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return;
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}
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p_mcb->port_inx[dlci] = p_port->inx;
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}
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memcpy (p_port->bd_addr, p_mcb->bd_addr, BD_ADDR_LEN);
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/* Connection is up and we know local and remote features, select MTU */
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port_select_mtu (p_port);
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p_port->rfc.p_mcb = p_mcb;
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p_port->mtu = (p_port->mtu < mtu) ? p_port->mtu : mtu;
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p_port->peer_mtu = p_port->mtu;
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/* Negotiate the flow control mechanism. If flow control mechanism for */
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/* mux has not been set yet, set it now. If either we or peer wants TS 07.10, */
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/* use that. Otherwise both must want credit based, so use that. If flow is */
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/* already defined for this mux, we respond with that value. */
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if (p_mcb->flow == PORT_FC_UNDEFINED) {
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if ((PORT_FC_DEFAULT == PORT_FC_TS710) || (cl == RFCOMM_PN_CONV_LAYER_TYPE_1)) {
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p_mcb->flow = PORT_FC_TS710;
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} else {
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p_mcb->flow = PORT_FC_CREDIT;
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}
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}
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/* Regardless of our flow control mechanism, if the PN cl is zero, we must */
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/* respond with zero. "A responding implementation must set this field to 14 */
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/* if (and only if) the PN request was 15." This could happen if a PN is sent */
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/* after the DLCI is already established-- the PN in that case must have cl = 0. */
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/* See RFCOMM spec 5.5.3 */
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if (cl == RFCOMM_PN_CONV_LAYER_TYPE_1) {
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our_cl = RFCOMM_PN_CONV_LAYER_TYPE_1;
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our_k = 0;
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} else if (p_mcb->flow == PORT_FC_CREDIT) {
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/* get credits */
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port_get_credits (p_port, k);
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/* Set convergence layer and number of credits (k) */
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our_cl = RFCOMM_PN_CONV_LAYER_CBFC_R;
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our_k = (p_port->credit_rx_max < RFCOMM_K_MAX) ? p_port->credit_rx_max : RFCOMM_K_MAX;
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p_port->credit_rx = our_k;
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} else {
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/* must not be using credit based flow control; use TS 7.10 */
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our_cl = RFCOMM_PN_CONV_LAYER_TYPE_1;
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our_k = 0;
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}
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RFCOMM_ParNegRsp (p_mcb, dlci, p_port->mtu, our_cl, our_k);
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}
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/*******************************************************************************
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**
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** Function PORT_ParNegCnf
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**
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** Description This function is called from the RFCOMM layer to change
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** DLCI parameters (currently only MTU is negotiated).
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** Save the MTU size supported by the peer.
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** If the confirmation is received during the port opening
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** procedure send EstablishRequest to continue.
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**
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*******************************************************************************/
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void PORT_ParNegCnf (tRFC_MCB *p_mcb, UINT8 dlci, UINT16 mtu, UINT8 cl, UINT8 k)
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{
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tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
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RFCOMM_TRACE_EVENT ("PORT_ParNegCnf dlci:%d mtu:%d cl: %d k: %d", dlci, mtu, cl, k);
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if (!p_port) {
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return;
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}
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/* Flow control mechanism not set yet. Negotiate flow control mechanism. */
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if (p_mcb->flow == PORT_FC_UNDEFINED) {
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/* Our stack is configured for TS07.10 and they responded with credit-based. */
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/* This is illegal-- negotiation fails. */
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if ((PORT_FC_DEFAULT == PORT_FC_TS710) && (cl == RFCOMM_PN_CONV_LAYER_CBFC_R)) {
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rfc_send_disc (p_mcb, p_port->dlci);
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rfc_port_closed (p_port);
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return;
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}
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/* Our stack is configured for credit-based and they responded with credit-based. */
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else if (cl == RFCOMM_PN_CONV_LAYER_CBFC_R) {
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p_mcb->flow = PORT_FC_CREDIT;
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}
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/* They responded with any other value. Treat this as negotiation to TS07.10. */
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else {
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p_mcb->flow = PORT_FC_TS710;
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}
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}
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/* If mux flow control mechanism set, we honor that setting regardless of */
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/* the CL value in their response. This allows us to gracefully accept any */
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/* illegal PN negotiation scenarios. */
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p_port->mtu = (p_port->mtu < mtu) ? p_port->mtu : mtu;
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p_port->peer_mtu = p_port->mtu;
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if (p_mcb->flow == PORT_FC_CREDIT) {
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port_get_credits (p_port, k);
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}
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if (p_port->state == PORT_STATE_OPENING) {
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RFCOMM_DlcEstablishReq (p_mcb, p_port->dlci, p_port->mtu);
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}
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}
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/*******************************************************************************
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**
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** Function PORT_DlcEstablishInd
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**
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** Description This function is called from the RFCOMM layer when peer
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** device wants to establish a new DLC. If this is not the
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** first message in the establishment procedure port_handle
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** has a handle to the port control block otherwise the control
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** block should be found based on the muliplexer channel and
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** dlci. The block should be allocated allocated before
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** meaning that application already made open.
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**
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*******************************************************************************/
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void PORT_DlcEstablishInd (tRFC_MCB *p_mcb, UINT8 dlci, UINT16 mtu)
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{
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tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
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RFCOMM_TRACE_DEBUG ("PORT_DlcEstablishInd p_mcb:%p, dlci:%d mtu:%di, p_port:%p", p_mcb, dlci, mtu, p_port);
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RFCOMM_TRACE_DEBUG ("PORT_DlcEstablishInd p_mcb addr:%02x:%02x:%02x:%02x:%02x:%02x",
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p_mcb->bd_addr[0], p_mcb->bd_addr[1], p_mcb->bd_addr[2],
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p_mcb->bd_addr[3], p_mcb->bd_addr[4], p_mcb->bd_addr[5]);
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if (!p_port) {
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/* This can be a first request for this port */
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p_port = port_find_dlci_port (dlci);
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if (!p_port) {
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RFCOMM_DlcEstablishRsp (p_mcb, dlci, 0, RFCOMM_ERROR);
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return;
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}
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p_mcb->port_inx[dlci] = p_port->inx;
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}
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/* If L2CAP's mtu less then RFCOMM's take it */
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if (mtu && (mtu < p_port->peer_mtu)) {
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p_port->peer_mtu = mtu;
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}
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/* If there was an inactivity timer running for MCB stop it */
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rfc_timer_stop (p_mcb);
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RFCOMM_DlcEstablishRsp (p_mcb, dlci, p_port->mtu, RFCOMM_SUCCESS);
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/* This is the server side. If application wants to know when connection */
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/* is established, thats the place */
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if (p_port->p_callback && (p_port->ev_mask & PORT_EV_CONNECTED)) {
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(p_port->p_callback)(PORT_EV_CONNECTED, p_port->inx);
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}
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if (p_port->p_mgmt_callback) {
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p_port->p_mgmt_callback (PORT_SUCCESS, p_port->inx);
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}
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p_port->state = PORT_STATE_OPENED;
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}
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|
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/*******************************************************************************
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**
|
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** Function PORT_DlcEstablishCnf
|
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**
|
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** Description This function is called from the RFCOMM layer when peer
|
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** acknowledges establish procedure (SABME/UA). Send reply
|
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** to the user and set state to OPENED if result was
|
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** successfull.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_DlcEstablishCnf (tRFC_MCB *p_mcb, UINT8 dlci, UINT16 mtu, UINT16 result)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_DlcEstablishCnf dlci:%d mtu:%d result:%d", dlci, mtu, result);
|
|
|
|
if (!p_port) {
|
|
return;
|
|
}
|
|
|
|
if (result != RFCOMM_SUCCESS) {
|
|
p_port->error = PORT_START_FAILED;
|
|
port_rfc_closed (p_port, PORT_START_FAILED);
|
|
return;
|
|
}
|
|
|
|
/* If L2CAP's mtu less then RFCOMM's take it */
|
|
if (mtu && (mtu < p_port->peer_mtu)) {
|
|
p_port->peer_mtu = mtu;
|
|
}
|
|
|
|
/* If there was an inactivity timer running for MCB stop it */
|
|
rfc_timer_stop (p_mcb);
|
|
|
|
if (p_port->p_callback && (p_port->ev_mask & PORT_EV_CONNECTED)) {
|
|
(p_port->p_callback)(PORT_EV_CONNECTED, p_port->inx);
|
|
}
|
|
|
|
if (p_port->p_mgmt_callback) {
|
|
p_port->p_mgmt_callback (PORT_SUCCESS, p_port->inx);
|
|
}
|
|
|
|
p_port->state = PORT_STATE_OPENED;
|
|
|
|
/* RPN is required only if we want to tell DTE how the port should be opened */
|
|
if ((p_port->uuid == UUID_SERVCLASS_DIALUP_NETWORKING)
|
|
|| (p_port->uuid == UUID_SERVCLASS_FAX)) {
|
|
RFCOMM_PortNegReq (p_port->rfc.p_mcb, p_port->dlci, NULL);
|
|
} else {
|
|
RFCOMM_ControlReq (p_port->rfc.p_mcb, p_port->dlci, &p_port->local_ctrl);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_PortNegInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer when peer
|
|
** device wants to set parameters of the port. As per the spec
|
|
** this message has to be sent before the first data packet
|
|
** and can be sent before establish. The block should be
|
|
** allocated before meaning that application already made open.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_PortNegInd (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_STATE *p_pars,
|
|
UINT16 param_mask)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_PortNegInd");
|
|
|
|
if (!p_port) {
|
|
/* This can be a first request for this port */
|
|
p_port = port_find_dlci_port (dlci);
|
|
if (!p_port) {
|
|
RFCOMM_PortNegRsp (p_mcb, dlci, p_pars, 0);
|
|
return;
|
|
}
|
|
p_mcb->port_inx[dlci] = p_port->inx;
|
|
}
|
|
|
|
/* Check if the flow control is acceptable on local side */
|
|
p_port->peer_port_pars = *p_pars;
|
|
RFCOMM_PortNegRsp (p_mcb, dlci, p_pars, param_mask);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_PortNegCnf
|
|
**
|
|
** Description This function is called from the RFCOMM layer to change
|
|
** state for the port. Propagate change to the user.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_PortNegCnf (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_STATE *p_pars, UINT16 result)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
UNUSED(p_pars);
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_PortNegCnf");
|
|
|
|
if (!p_port) {
|
|
RFCOMM_TRACE_WARNING ("PORT_PortNegCnf no port");
|
|
return;
|
|
}
|
|
/* Port negotiation failed. Drop the connection */
|
|
if (result != RFCOMM_SUCCESS) {
|
|
p_port->error = PORT_PORT_NEG_FAILED;
|
|
|
|
RFCOMM_DlcReleaseReq (p_mcb, p_port->dlci);
|
|
|
|
port_rfc_closed (p_port, PORT_PORT_NEG_FAILED);
|
|
return;
|
|
}
|
|
|
|
if (!(p_port->port_ctrl & PORT_CTRL_REQ_SENT)) {
|
|
RFCOMM_ControlReq (p_port->rfc.p_mcb, p_port->dlci, &p_port->local_ctrl);
|
|
} else {
|
|
RFCOMM_TRACE_WARNING ("PORT_PortNegCnf Control Already sent");
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_ControlInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer on the modem
|
|
** signal change. Propagate change to the user.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_ControlInd (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_CTRL *p_pars)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
UINT32 event;
|
|
UINT8 old_signals;
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_ControlInd");
|
|
|
|
if (!p_port) {
|
|
return;
|
|
}
|
|
|
|
old_signals = p_port->peer_ctrl.modem_signal;
|
|
|
|
event = port_get_signal_changes (p_port, old_signals, p_pars->modem_signal);
|
|
|
|
p_port->peer_ctrl = *p_pars;
|
|
|
|
if (!(p_port->port_ctrl & PORT_CTRL_REQ_SENT)) {
|
|
RFCOMM_ControlReq (p_port->rfc.p_mcb, p_port->dlci, &p_port->local_ctrl);
|
|
} else {
|
|
/* If this is the first time we received control RFCOMM is connected */
|
|
if (!(p_port->port_ctrl & PORT_CTRL_IND_RECEIVED)) {
|
|
event |= (PORT_EV_CONNECTED & p_port->ev_mask);
|
|
}
|
|
|
|
if (p_port->port_ctrl & PORT_CTRL_REQ_CONFIRMED) {
|
|
event |= port_rfc_send_tx_data(p_port);
|
|
}
|
|
}
|
|
|
|
p_port->port_ctrl |= (PORT_CTRL_IND_RECEIVED | PORT_CTRL_IND_RESPONDED);
|
|
|
|
if (p_pars->break_signal) {
|
|
event |= (PORT_EV_BREAK & p_port->ev_mask);
|
|
}
|
|
|
|
/* execute call back function only if the application is registered for events */
|
|
if (event && p_port->p_callback) {
|
|
(p_port->p_callback)(event, p_port->inx);
|
|
}
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_ControlInd DTR_DSR : %d, RTS_CTS : %d, RI : %d, DCD : %d",
|
|
((p_port->peer_ctrl.modem_signal & MODEM_SIGNAL_DTRDSR) ? 1 : 0),
|
|
((p_port->peer_ctrl.modem_signal & MODEM_SIGNAL_RTSCTS) ? 1 : 0),
|
|
((p_port->peer_ctrl.modem_signal & MODEM_SIGNAL_RI) ? 1 : 0),
|
|
((p_port->peer_ctrl.modem_signal & MODEM_SIGNAL_DCD) ? 1 : 0));
|
|
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_ControlCnf
|
|
**
|
|
** Description This function is called from the RFCOMM layer when
|
|
** peer acknowleges change of the modem signals.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_ControlCnf (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_CTRL *p_pars)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
UINT32 event = 0;
|
|
UNUSED(p_pars);
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_ControlCnf");
|
|
|
|
if (!p_port) {
|
|
return;
|
|
}
|
|
|
|
if (!(p_port->port_ctrl & PORT_CTRL_REQ_CONFIRMED)) {
|
|
p_port->port_ctrl |= PORT_CTRL_REQ_CONFIRMED;
|
|
|
|
if (p_port->port_ctrl & PORT_CTRL_IND_RECEIVED) {
|
|
event = (p_port->ev_mask & PORT_EV_CONNECTED);
|
|
}
|
|
}
|
|
|
|
if (p_port->port_ctrl & PORT_CTRL_IND_RECEIVED) {
|
|
event |= port_rfc_send_tx_data(p_port);
|
|
}
|
|
|
|
/* execute call back function only if the application is registered for events */
|
|
if (event && p_port->p_callback) {
|
|
(p_port->p_callback)(event, p_port->inx);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_LineStatusInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer when
|
|
** peer indicates change in the line status
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_LineStatusInd (tRFC_MCB *p_mcb, UINT8 dlci, UINT8 line_status)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
UINT32 event = 0;
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_LineStatusInd");
|
|
|
|
if (!p_port) {
|
|
return;
|
|
}
|
|
|
|
p_port->line_status |= line_status;
|
|
|
|
if (line_status & PORT_ERR_OVERRUN) {
|
|
event |= PORT_EV_OVERRUN;
|
|
}
|
|
|
|
if (line_status & PORT_ERR_BREAK) {
|
|
event |= PORT_EV_BREAK;
|
|
}
|
|
|
|
if (line_status & ~(PORT_ERR_OVERRUN | PORT_ERR_BREAK)) {
|
|
event |= PORT_EV_ERR;
|
|
}
|
|
|
|
if ((p_port->p_callback != NULL) && (p_port->ev_mask & event)) {
|
|
p_port->p_callback ((p_port->ev_mask & event), p_port->inx);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_DlcReleaseInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer when
|
|
** DLC connection is released.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_DlcReleaseInd (tRFC_MCB *p_mcb, UINT8 dlci)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_DlcReleaseInd");
|
|
|
|
if (!p_port) {
|
|
return;
|
|
}
|
|
|
|
port_rfc_closed (p_port, PORT_CLOSED);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_CloseInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer when
|
|
** multiplexer connection is released.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_CloseInd (tRFC_MCB *p_mcb)
|
|
{
|
|
tPORT *p_port;
|
|
int i;
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_CloseInd");
|
|
|
|
p_port = &rfc_cb.port.port[0];
|
|
for (i = 0; i < MAX_RFC_PORTS; i++, p_port++) {
|
|
if (p_port->rfc.p_mcb == p_mcb) {
|
|
port_rfc_closed (p_port, PORT_PEER_CONNECTION_FAILED);
|
|
}
|
|
}
|
|
rfc_release_multiplexer_channel (p_mcb);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function Port_TimeOutCloseMux
|
|
**
|
|
** Description This function is called when RFCOMM timesout on a command
|
|
** as a result multiplexer connection is closed.
|
|
**
|
|
*******************************************************************************/
|
|
void Port_TimeOutCloseMux (tRFC_MCB *p_mcb)
|
|
{
|
|
tPORT *p_port;
|
|
int i;
|
|
|
|
RFCOMM_TRACE_EVENT ("Port_TimeOutCloseMux");
|
|
|
|
p_port = &rfc_cb.port.port[0];
|
|
for (i = 0; i < MAX_RFC_PORTS; i++, p_port++) {
|
|
if (p_port->rfc.p_mcb == p_mcb) {
|
|
port_rfc_closed (p_port, PORT_PEER_TIMEOUT);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_DataInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer when data
|
|
** buffer is received from the peer.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_DataInd (tRFC_MCB *p_mcb, UINT8 dlci, BT_HDR *p_buf)
|
|
{
|
|
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
|
|
UINT8 rx_char1;
|
|
UINT32 events = 0;
|
|
UINT8 *p;
|
|
int i;
|
|
|
|
RFCOMM_TRACE_EVENT("PORT_DataInd with data length %d, p_mcb:%p,p_port:%p,dlci:%d",
|
|
p_buf->len, p_mcb, p_port, dlci);
|
|
if (!p_port) {
|
|
GKI_freebuf (p_buf);
|
|
return;
|
|
}
|
|
/* If client registered callout callback with flow control we can just deliver receive data */
|
|
if (p_port->p_data_co_callback) {
|
|
/* Another packet is delivered to user. Send credits to peer if required */
|
|
|
|
if (p_port->p_data_co_callback(p_port->inx, (UINT8 *)p_buf, -1, DATA_CO_CALLBACK_TYPE_INCOMING)) {
|
|
port_flow_control_peer(p_port, TRUE, 1);
|
|
} else {
|
|
port_flow_control_peer(p_port, FALSE, 0);
|
|
}
|
|
//GKI_freebuf (p_buf);
|
|
return;
|
|
} else {
|
|
RFCOMM_TRACE_ERROR("PORT_DataInd, p_port:%p, p_data_co_callback is null", p_port);
|
|
}
|
|
/* If client registered callback we can just deliver receive data */
|
|
if (p_port->p_data_callback) {
|
|
/* Another packet is delivered to user. Send credits to peer if required */
|
|
port_flow_control_peer(p_port, TRUE, 1);
|
|
|
|
p_port->p_data_callback (p_port->inx, (UINT8 *)(p_buf + 1) + p_buf->offset, p_buf->len);
|
|
GKI_freebuf (p_buf);
|
|
return;
|
|
}
|
|
|
|
/* Check if rx queue exceeds the limit */
|
|
if ((p_port->rx.queue_size + p_buf->len > PORT_RX_CRITICAL_WM)
|
|
|| (GKI_queue_length(&p_port->rx.queue) + 1 > p_port->rx_buf_critical)) {
|
|
RFCOMM_TRACE_EVENT ("PORT_DataInd. Buffer over run. Dropping the buffer");
|
|
GKI_freebuf (p_buf);
|
|
|
|
RFCOMM_LineStatusReq (p_mcb, dlci, LINE_STATUS_OVERRUN);
|
|
return;
|
|
}
|
|
|
|
/* If user registered to receive notification when a particular byte is */
|
|
/* received we mast check all received bytes */
|
|
if (((rx_char1 = p_port->user_port_pars.rx_char1) != 0)
|
|
&& (p_port->ev_mask & PORT_EV_RXFLAG)) {
|
|
for (i = 0, p = (UINT8 *)(p_buf + 1) + p_buf->offset; i < p_buf->len; i++) {
|
|
if (*p++ == rx_char1) {
|
|
events |= PORT_EV_RXFLAG;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
PORT_SCHEDULE_LOCK;
|
|
|
|
GKI_enqueue (&p_port->rx.queue, p_buf);
|
|
p_port->rx.queue_size += p_buf->len;
|
|
|
|
PORT_SCHEDULE_UNLOCK;
|
|
|
|
/* perform flow control procedures if necessary */
|
|
port_flow_control_peer(p_port, FALSE, 0);
|
|
|
|
/* If user indicated flow control can not deliver any notifications to him */
|
|
if (p_port->rx.user_fc) {
|
|
if (events & PORT_EV_RXFLAG) {
|
|
p_port->rx_flag_ev_pending = TRUE;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
events |= PORT_EV_RXCHAR;
|
|
|
|
/* Mask out all events that are not of interest to user */
|
|
events &= p_port->ev_mask;
|
|
|
|
if (p_port->p_callback && events) {
|
|
p_port->p_callback (events, p_port->inx);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function PORT_FlowInd
|
|
**
|
|
** Description This function is called from the RFCOMM layer on the flow
|
|
** control signal change. Propagate change to the user.
|
|
**
|
|
*******************************************************************************/
|
|
void PORT_FlowInd (tRFC_MCB *p_mcb, UINT8 dlci, BOOLEAN enable_data)
|
|
{
|
|
tPORT *p_port = (tPORT *)NULL;
|
|
UINT32 events = 0;
|
|
int i;
|
|
|
|
RFCOMM_TRACE_EVENT ("PORT_FlowInd fc:%d", enable_data);
|
|
|
|
if (dlci == 0) {
|
|
p_mcb->peer_ready = enable_data;
|
|
} else {
|
|
if ((p_port = port_find_mcb_dlci_port (p_mcb, dlci)) == NULL) {
|
|
return;
|
|
}
|
|
|
|
p_port->tx.peer_fc = !enable_data;
|
|
}
|
|
|
|
for (i = 0; i < MAX_RFC_PORTS; i++) {
|
|
/* If DLCI is 0 event applies to all ports */
|
|
if (dlci == 0) {
|
|
p_port = &rfc_cb.port.port[i];
|
|
if (!p_port->in_use
|
|
|| (p_port->rfc.p_mcb != p_mcb)
|
|
|| (p_port->rfc.state != RFC_STATE_OPENED)) {
|
|
continue;
|
|
}
|
|
}
|
|
events = 0;
|
|
|
|
/* Check if flow of data is still enabled */
|
|
events |= port_flow_control_user (p_port);
|
|
|
|
/* Check if data can be sent and send it */
|
|
events |= port_rfc_send_tx_data (p_port);
|
|
|
|
/* Mask out all events that are not of interest to user */
|
|
events &= p_port->ev_mask;
|
|
|
|
/* Send event to the application */
|
|
if (p_port->p_callback && events) {
|
|
(p_port->p_callback)(events, p_port->inx);
|
|
}
|
|
|
|
/* If DLCI is not 0 event applies to one port only */
|
|
if (dlci != 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function port_rfc_send_tx_data
|
|
**
|
|
** Description This function is when forward data can be sent to the peer
|
|
**
|
|
*******************************************************************************/
|
|
UINT32 port_rfc_send_tx_data (tPORT *p_port)
|
|
{
|
|
UINT32 events = 0;
|
|
BT_HDR *p_buf;
|
|
|
|
/* if there is data to be sent */
|
|
if (p_port->tx.queue_size > 0) {
|
|
/* while the rfcomm peer is not flow controlling us, and peer is ready */
|
|
while (!p_port->tx.peer_fc && p_port->rfc.p_mcb && p_port->rfc.p_mcb->peer_ready) {
|
|
/* get data from tx queue and send it */
|
|
PORT_SCHEDULE_LOCK;
|
|
|
|
if ((p_buf = (BT_HDR *)GKI_dequeue (&p_port->tx.queue)) != NULL) {
|
|
p_port->tx.queue_size -= p_buf->len;
|
|
|
|
PORT_SCHEDULE_UNLOCK;
|
|
|
|
RFCOMM_TRACE_DEBUG ("Sending RFCOMM_DataReq tx.queue_size=%d", p_port->tx.queue_size);
|
|
|
|
RFCOMM_DataReq (p_port->rfc.p_mcb, p_port->dlci, p_buf);
|
|
|
|
events |= PORT_EV_TXCHAR;
|
|
|
|
if (p_port->tx.queue_size == 0) {
|
|
events |= PORT_EV_TXEMPTY;
|
|
break;
|
|
}
|
|
}
|
|
/* queue is empty-- all data sent */
|
|
else {
|
|
PORT_SCHEDULE_UNLOCK;
|
|
|
|
events |= PORT_EV_TXEMPTY;
|
|
break;
|
|
}
|
|
}
|
|
/* If we flow controlled user based on the queue size enable data again */
|
|
events |= port_flow_control_user (p_port);
|
|
}
|
|
return (events & p_port->ev_mask);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function port_rfc_closed
|
|
**
|
|
** Description This function when RFCOMM side of port is closed
|
|
**
|
|
*******************************************************************************/
|
|
void port_rfc_closed (tPORT *p_port, UINT8 res)
|
|
{
|
|
UINT8 old_signals;
|
|
UINT32 events = 0;
|
|
tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
|
|
|
|
if ((p_port->state == PORT_STATE_OPENING) && (p_port->is_server)) {
|
|
/* The servr side has not been informed that connection is up, ignore */
|
|
RFCOMM_TRACE_EVENT ("port_rfc_closed in OPENING state ignored");
|
|
|
|
rfc_port_timer_stop (p_port);
|
|
p_port->rfc.state = RFC_STATE_CLOSED;
|
|
|
|
if (p_mcb) {
|
|
p_mcb->port_inx[p_port->dlci] = 0;
|
|
|
|
/* If there are no more ports opened on this MCB release it */
|
|
rfc_check_mcb_active (p_mcb);
|
|
p_port->rfc.p_mcb = NULL;
|
|
}
|
|
|
|
/* Need to restore DLCI to listening state
|
|
* if the server was on the initiating RFC
|
|
*/
|
|
p_port->dlci &= 0xfe;
|
|
|
|
return;
|
|
}
|
|
|
|
if ((p_port->state != PORT_STATE_CLOSING) && (p_port->state != PORT_STATE_CLOSED)) {
|
|
p_port->line_status |= LINE_STATUS_FAILED;
|
|
|
|
old_signals = p_port->peer_ctrl.modem_signal;
|
|
|
|
p_port->peer_ctrl.modem_signal &= ~(PORT_DTRDSR_ON | PORT_CTSRTS_ON | PORT_DCD_ON);
|
|
|
|
events |= port_get_signal_changes (p_port, old_signals, p_port->peer_ctrl.modem_signal);
|
|
|
|
if (p_port->ev_mask & PORT_EV_CONNECT_ERR) {
|
|
events |= PORT_EV_CONNECT_ERR;
|
|
}
|
|
}
|
|
RFCOMM_TRACE_EVENT ("port_rfc_closed state:%d sending events:%x", p_port->state, events);
|
|
|
|
if ((p_port->p_callback != NULL) && events) {
|
|
p_port->p_callback (events, p_port->inx);
|
|
}
|
|
|
|
if (p_port->p_mgmt_callback) {
|
|
p_port->p_mgmt_callback (res, p_port->inx);
|
|
}
|
|
|
|
p_port->rfc.state = RFC_STATE_CLOSED;
|
|
|
|
RFCOMM_TRACE_WARNING ("%s RFCOMM connection in state %d closed: %s (res: %d)",
|
|
__func__, p_port->state, PORT_GetResultString(res), res);
|
|
|
|
port_release_port (p_port);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function port_get_credits
|
|
**
|
|
** Description Set initial values for credits.
|
|
** Adjust max number of rx credits based on negotiated MTU.
|
|
** Check max allowed num of bytes, max allowed num buffers,
|
|
** should be less then 255
|
|
**
|
|
*******************************************************************************/
|
|
void port_get_credits (tPORT *p_port, UINT8 k)
|
|
{
|
|
p_port->credit_tx = k;
|
|
if (p_port->credit_tx == 0) {
|
|
p_port->tx.peer_fc = TRUE;
|
|
}
|
|
}
|