--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-gprs/sndcp/sndcp_nus.c	Fri Oct 16 06:25:50 2020 +0000
@@ -0,0 +1,868 @@
+/* 
++----------------------------------------------------------------------------- 
+|  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 */
+
+
+