/*******************************************************************************
**
** Function RFCOMM_FlowReq
**
** Description This function is called by the port entity when flow
** control state has changed. Enable flag passed shows if
** port can accept more data.
**
*******************************************************************************/
void RFCOMM_FlowReq (tRFC_MCB *p_mcb, UINT8 dlci, UINT8 enable)
{
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
if ((p_port->state != PORT_STATE_OPENED)
|| (p_port->rfc.state != RFC_STATE_OPENED))
return;
p_port->local_ctrl.fc = !enable;
p_port->rfc.expected_rsp |= RFC_RSP_MSC;
rfc_send_msc (p_mcb, dlci, TRUE, &p_port->local_ctrl);
rfc_port_timer_start (p_port, RFC_T2_TIMEOUT) ;
}
/*******************************************************************************
**
** Function RFCOMM_ControlReq
**
** Description This function is called by the port entity to send control
** parameters to remote port emulation entity.
**
*******************************************************************************/
void RFCOMM_ControlReq (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_CTRL *p_pars)
{
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
if ((p_port->state != PORT_STATE_OPENED)
|| (p_port->rfc.state != RFC_STATE_OPENED))
return;
p_port->port_ctrl |= PORT_CTRL_REQ_SENT;
p_port->rfc.expected_rsp |= RFC_RSP_MSC;
rfc_send_msc (p_mcb, dlci, TRUE, p_pars);
rfc_port_timer_start (p_port, RFC_T2_TIMEOUT) ;
}
/*******************************************************************************
**
** Function RFCOMM_FlowReq
**
** Description This function is called by the port entity when flow
** control state has changed. Enable flag passed shows if
** port can accept more data.
**
*******************************************************************************/
void RFCOMM_FlowReq (tRFC_MCB *p_mcb, UINT8 dlci, UINT8 enable)
{
tPORT *p_port = port_find_mcb_dlci_port(p_mcb, dlci);
if (p_port == NULL) {
RFCOMM_TRACE_WARNING("%s Unable to find DLCI port dlci:%d", __func__,
dlci);
return;
}
if ((p_port->state != PORT_STATE_OPENED)
|| (p_port->rfc.state != RFC_STATE_OPENED))
return;
p_port->local_ctrl.fc = !enable;
p_port->rfc.expected_rsp |= RFC_RSP_MSC;
rfc_send_msc (p_mcb, dlci, TRUE, &p_port->local_ctrl);
rfc_port_timer_start (p_port, RFC_T2_TIMEOUT) ;
}
/*******************************************************************************
**
** Function RFCOMM_ControlReq
**
** Description This function is called by the port entity to send control
** parameters to remote port emulation entity.
**
*******************************************************************************/
void RFCOMM_ControlReq (tRFC_MCB *p_mcb, UINT8 dlci, tPORT_CTRL *p_pars)
{
tPORT *p_port = port_find_mcb_dlci_port(p_mcb, dlci);
if (p_port == NULL) {
RFCOMM_TRACE_WARNING("%s Unable to find DLCI port dlci:%d", __func__,
dlci);
return;
}
if ((p_port->state != PORT_STATE_OPENED)
|| (p_port->rfc.state != RFC_STATE_OPENED))
return;
p_port->port_ctrl |= PORT_CTRL_REQ_SENT;
p_port->rfc.expected_rsp |= RFC_RSP_MSC;
rfc_send_msc (p_mcb, dlci, TRUE, p_pars);
rfc_port_timer_start (p_port, RFC_T2_TIMEOUT) ;
}
/*******************************************************************************
**
** Function rfc_process_msc
**
** Description This function handles Modem Status Command.
** Pass command to the user.
**
*******************************************************************************/
void rfc_process_msc (tRFC_MCB *p_mcb, BOOLEAN is_command, MX_FRAME *p_frame)
{
tPORT_CTRL pars;
tPORT *p_port;
UINT8 modem_signals = p_frame->u.msc.signals;
BOOLEAN new_peer_fc = FALSE;
p_port = port_find_mcb_dlci_port (p_mcb, p_frame->dlci);
if (p_port == NULL) {
return;
}
pars.modem_signal = 0;
if (modem_signals & RFCOMM_MSC_RTC) {
pars.modem_signal |= MODEM_SIGNAL_DTRDSR;
}
if (modem_signals & RFCOMM_MSC_RTR) {
pars.modem_signal |= MODEM_SIGNAL_RTSCTS;
}
if (modem_signals & RFCOMM_MSC_IC) {
pars.modem_signal |= MODEM_SIGNAL_RI;
}
if (modem_signals & RFCOMM_MSC_DV) {
pars.modem_signal |= MODEM_SIGNAL_DCD;
}
pars.fc = ((modem_signals & RFCOMM_MSC_FC) == RFCOMM_MSC_FC);
pars.break_signal = (p_frame->u.msc.break_present) ?
p_frame->u.msc.break_duration : 0;
pars.discard_buffers = 0;
pars.break_signal_seq = RFCOMM_CTRL_BREAK_IN_SEQ; /* this is default */
/* Check if this command is passed only to indicate flow control */
if (is_command) {
rfc_send_msc (p_mcb, p_frame->dlci, FALSE, &pars);
if (p_port->rfc.p_mcb->flow != PORT_FC_CREDIT) {
/* Spec 1.1 indicates that only FC bit is used for flow control */
p_port->peer_ctrl.fc = new_peer_fc = pars.fc;
if (new_peer_fc != p_port->tx.peer_fc) {
PORT_FlowInd (p_mcb, p_frame->dlci, (BOOLEAN)!new_peer_fc);
}
}
PORT_ControlInd (p_mcb, p_frame->dlci, &pars);
return;
}
/* If we are not awaiting response just ignore it */
if (!(p_port->rfc.expected_rsp & RFC_RSP_MSC)) {
return;
}
p_port->rfc.expected_rsp &= ~RFC_RSP_MSC;
rfc_port_timer_stop (p_port);
PORT_ControlCnf (p_port->rfc.p_mcb, p_port->dlci, &pars);
}
