Function TcpUpdateTimer

NetworkPkg/TcpDxe/TcpTimer.c:337–361

Update the timer status and the next expire time according to the timers to expire in a specific future time slot. @param[in, out] Tcb Pointer to the TCP_CB of this TCP instance. **/

**/
VOID
TcpUpdateTimer (
  IN OUT TCP_CB *Tcb
  )
{
  UINT16  Index;

  //
  // Don't use a too large value to init NextExpire
  // since mTcpTick wraps around as sequence no does.
  //
  Tcb->NextExpire = TCP_EXPIRE_TIME;
  TCP_CLEAR_FLG (Tcb->CtrlFlag, TCP_CTRL_TIMER_ON);

  for (Index = 0; Index < TCP_TIMER_NUMBER; Index++) {

    if (TCP_TIMER_ON (Tcb->EnabledTimer, Index) &&
        TCP_TIME_LT (Tcb->Timer[Index], mTcpTick + Tcb->NextExpire)
        ) {

      Tcb->NextExpire = TCP_SUB_TIME (Tcb->Timer[Index], mTcpTick);
      TCP_SET_FLG (Tcb->CtrlFlag, TCP_CTRL_TIMER_ON);
    }
  }
}

/**
  Enable a TCP timer.