+
−/* 
+
−+----------------------------------------------------------------------------- 
+
−|  Project :  
+
−|  Modul   :  
+
−+----------------------------------------------------------------------------- 
+
−|  Copyright 2002 Texas Instruments Berlin, AG 
+
−|                 All rights reserved. 
+
−| 
+
−|                 This file is confidential and a trade secret of Texas 
+
−|                 Instruments Berlin, AG 
+
−|                 The receipt of or possession of this file does not convey 
+
−|                 any rights to reproduce or disclose its contents or to 
+
−|                 manufacture, use, or sell anything it may describe, in 
+
−|                 whole, or in part, without the specific written consent of 
+
−|                 Texas Instruments Berlin, AG. 
+
−+----------------------------------------------------------------------------- 
+
−|  Purpose :  This modul is part of the entity LLC and implements all 
+
−|             functions to handles the incoming primitives as described in 
+
−|             the SDL-documentation (T201-statemachine)
+
−+----------------------------------------------------------------------------- 
+
−*/ 
+
−
+
−#ifndef LLC_ITXT_C
+
−#define LLC_ITXT_C
+
−#endif
+
−
+
−#define ENTITY_LLC
+
−
+
−/*==== INCLUDES =============================================================*/
+
−
+
−#include "typedefs.h"   /* to get Condat data types */
+
−#include "vsi.h"        /* to get a lot of macros */
+
−#include "macdef.h"
+
−#include "gprs.h"
+
−#include "gsm.h"        /* to get a lot of macros */
+
−#include "cnf_llc.h"    /* to get cnf-definitions */
+
−#include "mon_llc.h"    /* to get mon-definitions */
+
−#include "prim.h"       /* to get the definitions of used SAP and directions */
+
−#include "llc.h"        /* to get the global entity definitions */
+
−
+
−#include "llc_itxf.h"   /* to get local function definitions */
+
−#include "llc_llmes.h"  /* to get LLME signal definitions */
+
−#include "llc_irxs.h"   /* to get ITX signal definitions */
+
−
+
−
+
−/*==== CONST ================================================================*/
+
−
+
−/*==== LOCAL VARS ===========================================================*/
+
−
+
−/*==== PRIVATE FUNCTIONS ====================================================*/
+
−
+
−/*==== PUBLIC FUNCTIONS =====================================================*/
+
−
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : itx_T201_start
+
−+------------------------------------------------------------------------------
+
−| Description : This procedure starts timer T201 for the current SAPI. 
+
−|
+
−| Parameters  : 
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL void itx_T201_start (T_TIME length)
+
−{
+
−  TRACE_FUNCTION( "itx_T201_start" );
+
−
+
−  /*
+
−   * Start timer T201 for the current SAPI.
+
−   */
+
−#ifdef _SIMULATION_
+
−  /*
+
−   * In simulation mode, use always a timer value of 5 seconds.
+
−   */
+
−  vsi_t_start (VSI_CALLER
+
−    (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), 5000);
+
−#else
+
−  vsi_t_start (VSI_CALLER
+
−    (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), length);
+
−#endif /* _SIMULATION_ */
+
−
+
−  return;
+
−} /* itx_T201_start() */
+
−
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : itx_T201_stop
+
−+------------------------------------------------------------------------------
+
−| Description : This procedure stops timer T201 for the current SAPI. 
+
−|
+
−| Parameters  : 
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL void itx_T201_stop (void)
+
−{
+
−  TRACE_FUNCTION( "itx_T201_stop" );
+
−
+
−  /*
+
−   * Stops timer T201 for the current SAPI.
+
−   */
+
−  vsi_t_stop (VSI_CALLER 
+
−    (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)));
+
−
+
−  return;
+
−} /* itx_T201_stop() */
+
−
+
−
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : itx_timer_t201
+
−+------------------------------------------------------------------------------
+
−| Description : Handles expiry of timer T201. This function is called from
+
−|               pei_timeout().
+
−|
+
−| Parameters  : sapi - indicates the SAPI for which the timer has expired
+
−|
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL void itx_timer_t201 (UBYTE sapi)
+
−{ 
+
−  TRACE_FUNCTION( "itx_timer_t201" );
+
−  
+
−  TRACE_0_INFO("T201 EXPIRED" );
+
−
+
−  SWITCH_LLC (sapi);
+
−
+
−  switch (GET_STATE(ITX))
+
−  {
+
−    case ITX_ABM:
+
−      /*
+
−       * If a frame is associated with T201, increment the 
+
−       * retransmission counter and if below N200, restart 
+
−       * T201. Else initate the ABM-Re-Establish procedure.
+
−       */
+
−      if ( llc_data->itx->t201_entry != NULL)
+
−      {
+
−        llc_data->itx->t201_entry->status = IQ_RETR_FRAME;
+
−
+
−        if ( llc_data->itx->t201_entry->n_retr <= *(llc_data->n200) )
+
−        {
+
−          TIMERSTART (T201, llc_data->t200->length);
+
−          itx_send_next_frame (ABIT_SET_REQ);
+
−        }
+
−        else
+
−        {
+
−          /*
+
−           * Initate ABM Re-Establish procedure. The state change 
+
−           * will be done by the reestablish procedure later.
+
−           */
+
−          sig_itx_llme_reest_ind (LLGMM_ERRCS_ACK_NO_PEER_RES_REEST);
+
−        }
+
−      }
+
−      /* SET_STATE (ITX, SAME_STATE); */
+
−      break;
+
−
+
−    case ITX_ABM_PEER_BUSY:
+
−      /*
+
−       * If the Peer busy retransmission counter is below N200
+
−       * restart T201 and send an appropriated S frame. Else
+
−       * initate the ABM-Re-Establish procedure.
+
−       */
+
−      if ( llc_data->itx->n_pb_retr < *(llc_data->n200) )
+
−      {
+
−        TIMERSTART (T201, llc_data->t200->length);
+
−        sig_itx_irx_s_frame_req (ABIT_SET_REQ); 
+
−        llc_data->itx->n_pb_retr += 1;
+
−      }
+
−      else
+
−      {
+
−        sig_itx_llme_reest_ind (LLGMM_ERRCS_PEER_BUSY_REEST);
+
−      }
+
−      /* SET_STATE (ITX, SAME_STATE); */
+
−      break;
+
−
+
−    default:
+
−      TRACE_ERROR( "T201 unexpected" );
+
−      break;
+
−  }
+
−
+
−} /* itx_timer_t201() */