/*******************************************************************************
**
** Function rfc_process_l2cap_congestion
**
** Description This function handles L2CAP congestion messages
**
*******************************************************************************/
void rfc_process_l2cap_congestion (tRFC_MCB *p_mcb, BOOLEAN is_congested)
{
p_mcb->l2cap_congested = is_congested;
if (!is_congested) {
rfc_check_send_cmd(p_mcb, NULL);
}
if (!rfc_cb.rfc.peer_rx_disabled) {
if (!is_congested) {
PORT_FlowInd (p_mcb, 0, TRUE);
} else {
PORT_FlowInd (p_mcb, 0, FALSE);
}
}
}
/*******************************************************************************
**
** Function rfc_process_fcoff
**
** Description This function handles FCOFF frame. The peer entity is unable
** to receive new information
**
*******************************************************************************/
void rfc_process_fcoff (tRFC_MCB *p_mcb, BOOLEAN is_command)
{
if (is_command) {
rfc_cb.rfc.peer_rx_disabled = TRUE;
if (!p_mcb->l2cap_congested) {
PORT_FlowInd (p_mcb, 0, FALSE);
}
rfc_send_fcoff (p_mcb, FALSE);
}
}
/*******************************************************************************
**
** Function rfc_inc_credit
**
** Description The function is called when a credit is received in a UIH
** frame. It increments the TX credit count, and if data
** flow had halted, it restarts it.
**
** Returns void
**
*******************************************************************************/
void rfc_inc_credit (tPORT *p_port, UINT8 credit)
{
if (p_port->rfc.p_mcb->flow == PORT_FC_CREDIT) {
p_port->credit_tx += credit;
RFCOMM_TRACE_EVENT ("rfc_inc_credit:%d", p_port->credit_tx);
if (p_port->tx.peer_fc == TRUE) {
PORT_FlowInd(p_port->rfc.p_mcb, p_port->dlci, TRUE);
}
}
}
/*******************************************************************************
**
** 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);
}