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view src/g23m-gprs/sndcp/sndcp_nus.c @ 275:79cfefc1e2b4

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audio mode load: gracefully handle mode files of wrong AEC version Unfortunately our change of enabling L1_NEW_AEC (which is necessary in order to bring our Calypso ARM fw into match with the underlying DSP reality) brings along a change in the audio mode file binary format and file size - all those new tunable AEC parameters do need to be stored somewhere, after all. But we already have existing mode files in the old format, and setting AEC config to garbage when loading old audio modes (which is what would happen without the present change) is not an appealing proposition. The solution implemented in the present change is as follows: the audio mode loading code checks the file size, and if it differs from the active version of T_AUDIO_MODE, the T_AUDIO_AEC_CFG structure is cleared - set to the default (disabled AEC) for the compiled type of AEC. We got lucky in that this varying T_AUDIO_AEC_CFG structure sits at the end of T_AUDIO_MODE!
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 30 Jul 2021 02:55:48 +0000
parents fa8dc04885d8
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  sndcp_nus.c
+----------------------------------------------------------------------------- 
|  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 SNDCP and implements all 
|             functions to handles the incoming process internal signals as  
|             described in the SDL-documentation (NU-statemachine)
+----------------------------------------------------------------------------- 
*/ 

/*---- HISTORY --------------------------------------------------------------*/

#define ENTITY_SNDCP

/*==== INCLUDES =============================================================*/

#include "typedefs.h"    /* to get Condat data types */
#include "vsi.h"        /* to get a lot of macros */
#include "macdef.h"
#include "prim.h"       /* to get the definitions of used SAP and directions */

#include "dti.h"

#include "sndcp.h"        /* to get the global entity definitions */
#include "sndcp_f.h"       /* to get the functions to access the global arrays*/

#include "sndcp_nuf.h"      /* to get internal functions for service nu. */
#include "sndcp_suas.h"      /* to get signals to sua. */

/*==== CONST ================================================================*/

/*==== LOCAL VARS ===========================================================*/

/*==== PRIVATE FUNCTIONS ====================================================*/

/*
+------------------------------------------------------------------------------
| Function    : nu_send_pending
+------------------------------------------------------------------------------
| Description : Re-sends the next not yet acknowledged N-PDU. If this was the
| last one, ready is set to TRUE, otherwise to FALSE.
| Ready is also set to TRUE, if there is no pending NPDU at all.
|
| Parameters  : ready
| Pre         : correct instance of nu service is active.
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

LOCAL void nu_send_pending (BOOL* ready) 
{ 
  T_SN_DATA_REQ* sn_data_req = NULL;
  UBYTE npdu_number = 0;
  UBYTE sapi = 0;

  TRACE_FUNCTION( "nu_send_pending" );

  if (sndcp_data->nu->next_resend == NULL) {
    *ready = TRUE;
    return;
  }
  sn_data_req = sndcp_data->nu->next_resend->sn_data_req;
  sndcp_get_nsapi_sapi(sndcp_data->nu->nsapi, &sapi);
  npdu_number = sndcp_data->nu->next_resend->npdu_number;


  /*
   * Set next_resend to the next one if possible.
   */
  if (sndcp_data->nu->next_resend->next == NULL) {
    *ready = TRUE;
    SET_STATE(NU, NU_ACK_SUA_NOT_RECEPTIVE);
  } else {
    *ready = FALSE;
    sndcp_data->nu->next_resend = sndcp_data->nu->next_resend->next;
    SET_STATE(NU, NU_REC_SUA_NOT_RECEPTIVE);
  }

  sig_nu_sua_data_req(sn_data_req,
                      npdu_number,
                      sndcp_data->nu->nsapi,
                      sapi);

} /* nu_send_pending() */

#endif /* CF_FAST_EXEC */

/*
+------------------------------------------------------------------------------
| Function    : nu_config_send_pending
+------------------------------------------------------------------------------
| Description : Re-sends the next not yet acknowledged N-PDU. If this was the
| last one, ready is set to TRUE, otherwise to FALSE.
| Ready is also set to TRUE, if there is no pending NPDU at all.
| The same function as nu_send_pending, but for tests with config send.
|
| Parameters  : ready
| Pre         : correct instance of nu service is active.
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC
#ifndef NCONFIG

LOCAL void nu_config_send_pending (BOOL* ready) 
{ 
  T_SN_DATA_REQ* sn_data_req = NULL;
  UBYTE npdu_number = 0;
  UBYTE sapi = 0;

  TRACE_FUNCTION( "nu_config_send_pending" );

  if (sndcp_data->nu->next_resend == NULL) {
    *ready = TRUE;
    return;
  }
  sn_data_req = sndcp_data->nu->next_resend->sn_data_req;
  sndcp_get_nsapi_sapi(sndcp_data->nu->nsapi, &sapi);
  npdu_number = sndcp_data->nu->next_resend->npdu_number;

  /*
   * Set next_resend to the next one if possible.
   */
  if (sndcp_data->nu->next_resend->next == NULL) {
    *ready = TRUE;
    SET_STATE(NU, NU_SEND_ACK_SUA_NOT_RECEPTIVE);
  } else {
    *ready = FALSE;
    sndcp_data->nu->next_resend = sndcp_data->nu->next_resend->next;
    SET_STATE(NU, NU_SEND_REC_SUA_NOT_RECEPTIVE);
  }
  sig_nu_sua_data_req(sn_data_req,
                      npdu_number,
                      sndcp_data->nu->nsapi,
                      sapi);

} /* nu_config_send_pending() */

#endif /* NCONFIG */
#endif /* CF_FAST_EXEC */

/*==== PUBLIC FUNCTIONS =====================================================*/


/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_delete_npdus
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_DELETE_NPDUS. All the
|               buffered N-PDUs waiting for confirmation are deleted.
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_delete_npdus (UBYTE nsapi) 
{ 
  TRACE_ISIG( "sig_mg_nu_delete_npdus" );
  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:
      nu_delete_npdus();
      break;

    case NU_UNACK_SU_RECEPTIVE :
    case NU_UNACK_SU_NOT_RECEPTIVE:
#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif
      break;
    default:
      TRACE_ERROR( "SIG_SU_NU_DELETE_NPDUS unexpected" );
      break;
  }
} /* sig_mg_nu_delete_npdus() */

#endif /* CF_FAST_EXEC */

/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_delete_to
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_DELETE_TO. All the
|               buffered N-PDUs waiting for confirmation are deleted until the
|               N-PDU with the given number is reached, beacuse this is the one
|               that is expected atthe peer side..
|
| Parameters  : naspi, npdu_num
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_delete_to (UBYTE nsapi, UBYTE npdu_num) 
{ 
  T_NPDU_BUFFER* help = NULL;
  /*
   * Has npdu number been found?
   */
  BOOL found = FALSE;

  TRACE_ISIG( "sig_mg_nu_delete_to" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:
    
      help = sndcp_data->nu->first_buffered_npdu;
      while (help != NULL && ! found) {
        T_NPDU_BUFFER* buf = help;

        help = help->next;
        if (buf->npdu_number == npdu_num) {
          found = TRUE;
        } else {
          nu_delete_npdu(nsapi, buf->npdu_number);
        }
      }
      break;
    case NU_UNACK_SU_RECEPTIVE :
    case NU_UNACK_SU_NOT_RECEPTIVE:
#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif
      break;
    default:
      TRACE_ERROR( "SIG_MG_NU_DELETE_TO unexpected" );
      break;
  }
} /* sig_mg_nu_delete_to() */

#endif /* CF_FAST_EXEC */


/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_recover
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_RECOVER. 
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_recover (UBYTE nsapi) 
{ 
  BOOL ready = FALSE;

  TRACE_ISIG( "sig_mg_nu_recover" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  /*
   * If there is resend, start with first pdu!
   */
  sndcp_data->nu->next_resend = sndcp_data->nu->first_buffered_npdu;
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
      /*
       * Is there at least 1 not yet acknowledged N-PDU?
       */
      if (sndcp_data->nu->first_buffered_npdu != NULL) {
        SET_STATE(NU, NU_REC_SUA_NOT_RECEPTIVE);
      }
      break;
    case NU_ACK_SUA_RECEPTIVE:
      nu_send_pending(&ready);
      break;
#ifndef NCONFIG
	case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
      /*
       * Is there at least 1 not yet acknowledged N-PDU?
       */
      if (sndcp_data->nu->first_buffered_npdu != NULL) {
        SET_STATE(NU, NU_SEND_REC_SUA_NOT_RECEPTIVE);
      }
      break;
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
      nu_config_send_pending(&ready);
      break;
#endif    /* NCONFIG */
    case NU_SUS_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
      break;
    default:
      TRACE_ERROR( "SIG_MG_NU_RECOVER unexpected" );
      break;
  }
} /* sig_mg_nu_recover() */

#endif /* CF_FAST_EXEC */

/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_reset_ind
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_RESET_IND. 
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_reset_ind (UBYTE nsapi) 
{ 
  TRACE_ISIG( "sig_mg_nu_reset_ind" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_UNACK_SU_NOT_RECEPTIVE:
    case NU_UNACK_SU_RECEPTIVE:
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:
#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif
        sndcp_data->nu->send_npdu_number_unack = 0;
      break;
    default:
      TRACE_ERROR( "SIG_MG_NU_RESET_IND unexpected" );
      break;
  }
} /* sig_mg_nu_reset_ind() */

#endif /* CF_FAST_EXEC */

  
/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_resume
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_RESUME. 
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_resume (UBYTE nsapi) 
{ 
  BOOL ready = FALSE;
  USHORT sapi_state = 0;
  UBYTE sapi = 0;
  TRACE_ISIG( "sig_mg_nu_resume" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_SUS_SUA_NOT_RECEPTIVE:
      /*
       * Is there at least 1 not yet acknowledged N-PDU?
       */
      if (sndcp_data->nu->first_buffered_npdu != NULL) {
        SET_STATE(NU, NU_REC_SUA_NOT_RECEPTIVE);
      } else {
        SET_STATE(NU, NU_ACK_SUA_NOT_RECEPTIVE);
      }
      break;
    case NU_SUS_SUA_RECEPTIVE:
      /*
       * Is there at least 1 not yet acknowledged N-PDU?
       */
      sndcp_get_nsapi_sapi(nsapi, &sapi);
      sndcp_get_sapi_state(sapi, &sapi_state);
      /*
       * In ACK mode, the PDU send should not resume until LL_ESTB_IND is received
       * Refer  3GPP 04.65 sec 5.1.2.26 
       */
      if ((sndcp_data->nu->first_buffered_npdu != NULL) AND 
          ((sapi_state & MG_EST_IND) == 0)) {
        nu_send_pending(&ready);
      } else {
        sndcp_unset_sapi_state(sapi, MG_EST_IND);
        SET_STATE(NU, NU_ACK_SUA_RECEPTIVE);
      }
      break;
    case NU_UNACK_SU_RECEPTIVE:
    case NU_UNACK_SU_NOT_RECEPTIVE:

    case NU_ACK_SUA_RECEPTIVE:

#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif
      break;
    default:
      TRACE_ERROR( "SIG_MG_NU_RESUME unexpected" );
      break;
  }
} /* sig_mg_nu_resume() */

#endif /* CF_FAST_EXEC */


/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_suspend
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_SUSPEND. 
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_suspend (UBYTE nsapi) 
{ 
  TRACE_ISIG( "sig_mg_nu_suspend" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
      SET_STATE(NU, NU_SUS_SUA_NOT_RECEPTIVE);
      break;
    case NU_ACK_SUA_RECEPTIVE:
      SET_STATE(NU, NU_SUS_SUA_RECEPTIVE);
      break;
#ifndef NCONFIG
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
      SET_STATE(NU, NU_SEND_SUS_SUA_NOT_RECEPTIVE);
      break;
    case NU_SEND_ACK_SUA_RECEPTIVE:
      SET_STATE(NU, NU_SEND_SUS_SUA_RECEPTIVE);
      break;
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif
	case NU_SUS_SUA_RECEPTIVE:
    case NU_UNACK_SU_RECEPTIVE :
    case NU_UNACK_SU_NOT_RECEPTIVE:
      break;
    default:
      TRACE_ERROR( "SIG_MG_NU_SUSPEND unexpected" );
      break;
  }
} /* sig_mg_nu_suspend() */

#endif /* CF_FAST_EXEC */


/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_reset
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_RESET. The 
|               send_npdu_number_unack is set to 0 and GACI gets an
|               SN_UNITREADY_IND for the affected NSAPI.
|
| Parameters  : UBYTE nsapi: the affected NSAPI, discard ready flag
|                      (is old unitready_ind to be discarded?
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_reset (UBYTE nsapi, BOOL discard_ready) 
{ 
  TRACE_ISIG( "sig_mg_nu_reset" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {

    case NU_UNACK_SU_RECEPTIVE :
    case NU_UNACK_SU_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:

      sndcp_data->nu->send_npdu_number_unack = 0;
      sndcp_data->nu->send_npdu_number_ack = 0;
      sndcp_data->nu->rec_npdu_number_ack = 0;
      nu_delete_npdus();
      if (discard_ready) {
        sndcp_data->nu->sn_unitready_ind_pending = FALSE;
      }
      nu_unitready_ind_if_nec(nsapi);
      SET_STATE(NU, NU_UNACK_SU_RECEPTIVE);
      break;
#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:

      sndcp_data->nu->send_npdu_number_unack = 0;
      sndcp_data->nu->send_npdu_number_ack = 0;
      sndcp_data->nu->rec_npdu_number_ack = 0;
      nu_delete_npdus();
      if (discard_ready) {
        sndcp_data->nu->sn_unitready_ind_pending = FALSE;
      }
      nu_unitready_ind_if_nec(nsapi);
      SET_STATE(NU, NU_UNACK_SU_RECEPTIVE);
      break;
#endif /* NCONFIG */
    default:
      TRACE_ERROR( "SIG_MG_NU_RESET unexpected" );
      break;
  }
} /* sig_mg_nu_reset() */

#endif /* CF_FAST_EXEC */

/*
+------------------------------------------------------------------------------
| Function    : sig_mg_nu_reset_ack
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_MG_NU_RESET_ACK. The 
|               send_npdu_number_ack and rec_npdu_number_ack are set to 0 and 
|               GACI gets an
|               SN_READY_IND for the affected NSAPI.
|
| Parameters  : UBYTE nsapi: the affected NSAPI, send npdu number, 
|               rec npdu number, discard_ready flag
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_mg_nu_reset_ack (UBYTE nsapi, UBYTE send_no, UBYTE rec_no, BOOL discard_ready) 
{ 
  TRACE_ISIG( "sig_mg_nu_reset_ack" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_UNACK_SU_RECEPTIVE :
    case NU_UNACK_SU_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:
      sndcp_data->nu->send_npdu_number_unack = 0;
      sndcp_data->nu->send_npdu_number_ack = send_no;
      sndcp_data->nu->rec_npdu_number_ack = rec_no;
      nu_delete_npdus();
      if (discard_ready) {
        sndcp_data->nu->sn_ready_ind_pending = FALSE;
      }
      nu_ready_ind_if_nec(nsapi);
      SET_STATE(NU, NU_ACK_SUA_RECEPTIVE);
      break;
#ifndef NCONFIG
    case NU_SEND_UNACK_SU_RECEPTIVE:
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:

      sndcp_data->nu->send_npdu_number_unack = 0;
      sndcp_data->nu->send_npdu_number_ack = send_no;
      sndcp_data->nu->rec_npdu_number_ack = rec_no;
      nu_delete_npdus();
      if (discard_ready) {
        sndcp_data->nu->sn_ready_ind_pending = FALSE;
      }
      nu_ready_ind_if_nec(nsapi);
      SET_STATE(NU, NU_ACK_SUA_RECEPTIVE);
      break;
#endif /* NCONFIG */
    default:
      TRACE_ERROR( "SIG_MG_NU_RESET_ACK unexpected" );
      break;  
  }
} /* sig_mg_nu_reset_ack() */

#endif /* CF_FAST_EXEC */


/*
+------------------------------------------------------------------------------
| Function    : sig_su_nu_ready_ind
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_SU_NU_READY_IND
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
/*f defined(CF_FAST_EXEC) || defined(_SIMULATION_) || \
   !defined(SNDCP_UPM_INCLUDED)   || defined(SNDCP_2to1) */

GLOBAL void sig_su_nu_ready_ind (UBYTE nsapi) 
{ 
  TRACE_ISIG( "sig_su_nu_ready_ind" );

  /*
   * Set service instance according to nsapi in signal.
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
      break;
    case NU_ACK_SUA_RECEPTIVE:
      break;
    case NU_UNACK_SU_NOT_RECEPTIVE:
      SET_STATE(NU, NU_UNACK_SU_RECEPTIVE);
      nu_unitready_ind_if_nec(nsapi);
      break;
    case NU_UNACK_SU_RECEPTIVE:
      break;
#ifndef NCONFIG
    case NU_SEND_ACK_SUA_RECEPTIVE: 
      break;
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
      break;
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
      SET_STATE(NU, NU_SEND_UNACK_SU_RECEPTIVE);
      nu_unitready_ind_if_nec(nsapi);
      break;
    case NU_SEND_UNACK_SU_RECEPTIVE:
      /*SET_STATE(NU, NU_SEND_UNACK_SU_RECEPTIVE);*/
      nu_config_send_next(nsapi);
      break;
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
      break;
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
      break;
    case NU_SEND_SUS_SUA_RECEPTIVE:
      break;
#endif
    default:
      TRACE_ERROR( "SIG_SU_NU_READY_IND unexpected" );
      break;
  }
} /* sig_su_nu_ready_ind() */

/*#endif  *//* CF_FAST_EXEC || _SIMULATION_ || !SNDCP_UPM_INCLUDED || SNDCP_2to1 */

/*
+------------------------------------------------------------------------------
| Function    : sig_sua_nu_data_cnf
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_SUA_NU_DATA_CNF. The N-PDU
|               with the given N-PDU number has been confirmed completely by
|               the network and service nu is notified abou this.
|
| Parameters  : UBYTE nsapi: the affected NSAPI, UBYTE npdu_number: the number
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_sua_nu_data_cnf (UBYTE nsapi, UBYTE npdu_number) 
{ 
  TRACE_ISIG( "sig_sua_nu_npdu_number" );

  /*
   * Set service instance according to nsapi in signal.
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];
  
  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
    case NU_REC_SUA_NOT_RECEPTIVE:
    case NU_ACK_SUA_RECEPTIVE:
    case NU_SUS_SUA_NOT_RECEPTIVE:
    case NU_SUS_SUA_RECEPTIVE:
#ifndef NCONFIG
    case NU_SEND_ACK_SUA_RECEPTIVE:
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
    case NU_SEND_SUS_SUA_RECEPTIVE:
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
#endif /* NCONFIG */
      nu_delete_npdu(nsapi, npdu_number);
      break;
    case NU_UNACK_SU_NOT_RECEPTIVE:
      break;
    case NU_UNACK_SU_RECEPTIVE:
      break;
    default:
      TRACE_ERROR( "SIG_SUA_NU_DATA_CNF unexpected" );
      break;
  }
} /* sig_sua_nu_data_cnf() */

#endif /* CF_FAST_EXEC */

/*
+------------------------------------------------------------------------------
| Function    : sig_sua_nu_ready_ind
+------------------------------------------------------------------------------
| Description : Handles the internal signal SIG_SUA_NU_READY_IND
|
| Parameters  : UBYTE nsapi: the affected NSAPI
|
+------------------------------------------------------------------------------
*/
#ifndef CF_FAST_EXEC

GLOBAL void sig_sua_nu_ready_ind (UBYTE nsapi) 
{ 
  BOOL ready;
#ifndef NCONFIG
  U32 *data_count;
  data_count = &sndcp_data->data_count[nsapi];
#endif

  TRACE_FUNCTION( "sig_sua_nu_ready_ind" );

  /*
   * set service instance according to nsapi in primitive
   */
  sndcp_data->nu = & sndcp_data->nu_base[nsapi];

  switch( GET_STATE( NU ) )
  {
    case NU_ACK_SUA_NOT_RECEPTIVE:
#ifndef NCONFIG
      if (*data_count == 0) {
        SET_STATE(NU, NU_ACK_SUA_RECEPTIVE);
        nu_ready_ind_if_nec(nsapi);
      } else {
        SET_STATE(NU, NU_SEND_ACK_SUA_NOT_RECEPTIVE);
        nu_config_send_next(sndcp_data->nu->nsapi);
      }
#else
        SET_STATE(NU, NU_ACK_SUA_RECEPTIVE);
        nu_ready_ind_if_nec(nsapi);
#endif
      break;
    case NU_REC_SUA_NOT_RECEPTIVE:
      nu_send_pending(&ready);
      break;
    case NU_SUS_SUA_NOT_RECEPTIVE:
      SET_STATE(NU, NU_SUS_SUA_RECEPTIVE);
      break;
    case NU_ACK_SUA_RECEPTIVE:
      break;
#ifndef NCONFIG
    case NU_SEND_ACK_SUA_RECEPTIVE: 
      nu_config_send_next(nsapi);
      break;
    case NU_SEND_ACK_SUA_NOT_RECEPTIVE:
      SET_STATE(NU, NU_SEND_ACK_SUA_RECEPTIVE);
      nu_ready_ind_if_nec(nsapi);
      break;
    case NU_SEND_UNACK_SU_NOT_RECEPTIVE:
      break;
    case NU_SEND_UNACK_SU_RECEPTIVE:
      SET_STATE(NU, NU_SEND_UNACK_SU_RECEPTIVE);
      break;
    case NU_SEND_REC_SUA_NOT_RECEPTIVE:
      nu_config_send_pending(&ready);
      break;
    case NU_SEND_SUS_SUA_NOT_RECEPTIVE:
      break;
    case NU_SEND_SUS_SUA_RECEPTIVE:
      break;
#endif
    default:
      TRACE_ERROR( "SIG_SUA_NU_READY_IND unexpected" );
      break;
  }
} /* sig_sua_nu_ready_ind() */

#endif /* CF_FAST_EXEC */