--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/g23m-aci/aci_dti_mng/dti_conn_mng.c	Thu Jun 09 00:02:41 2016 +0000
@@ -0,0 +1,856 @@
+/*
++-----------------------------------------------------------------------------
+|  Project :  ...
+|  Modul   :  dti_conn_mng.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 :  Implementation of DTI Connection Manager
++-----------------------------------------------------------------------------
+*/
+
+
+#ifndef DTI_CONN_MNG_C
+#define DTI_CONN_MNG_C
+#endif
+
+
+/*===== INCLUDES ===================================================*/
+
+#include "config.h"
+#include "fixedconf.h"
+#include "condat-features.h"
+#include "aci_conf.h"
+
+#include "aci_all.h"
+
+#include "pconst.cdg"
+#include "mconst.cdg"
+#include "cnf_aci.h"
+#include "mon_aci.h"
+#include "pei.h"
+#include "aci_cmh.h"
+#include "ati_cmd.h"
+#include "aci_io.h"
+
+#include "aci_cmh.h"
+#include "aci_lst.h"
+#include "aci_mem.h"
+
+#include "dti.h"
+#include "dti_conn_mng.h"
+#include "dti_cntrl_mng.h"
+
+
+
+LOCAL ULONG        used_dti_channels = 0;
+LOCAL T_ACI_LIST  *dti_channel_list = NULL; /* list_begin */
+
+LOCAL T_DTI_CONN_PARAMS glob_params;
+
+
+/********************** LOCAL FUNCTIONS *****************************/
+
+
+LOCAL UBYTE dti_conn_get_new_dti_id (void)
+{
+  ULONG tst_id;
+  UBYTE i;
+
+  TRACE_FUNCTION("dti_conn_get_new_dti_id()");
+
+  /* create a new DTI ID */
+  for (i = 0; i <= MAX_DTI_CONN_CHANNELS; i++)
+  {
+    tst_id = (0x01 << i) & used_dti_channels;
+    if (!tst_id)
+    {
+      break;
+    }
+  }
+  if (tst_id)
+  {
+    TRACE_EVENT("No DTI ID available");
+    return (DTI_DTI_ID_NOTPRESENT);
+  }
+  used_dti_channels |= (0x01 << i);
+
+  TRACE_EVENT_P1("DTI ID %d created", i);
+
+  return (i);
+}
+
+
+LOCAL void dti_conn_remove_dti_id (UBYTE dti_id)
+{
+  ULONG tst_id;
+  
+  TRACE_FUNCTION("dti_conn_remove_id()");
+  
+  if (dti_id >= MAX_DTI_CONN_CHANNELS)
+    return;
+
+  tst_id = 0x01 << (dti_id);
+  used_dti_channels &= ~tst_id;
+
+  TRACE_EVENT_P1("DTI ID %d removed", dti_id);
+
+}
+
+
+LOCAL BOOL dti_conn_error_cb(UBYTE dti_id, T_DTI_CONN_STATE result_type)
+{
+  /* theorically should not be called... Yet helpfull for testing */
+  TRACE_FUNCTION("dti_conn_error_cb()");
+
+  TRACE_EVENT("ERROR: DTI connection callback has not been initialized !");
+
+  return FALSE;
+}
+
+
+LOCAL void dti_conn_reset_conn_parms( T_DTI_CONN_CHANNEL *dti_channel )
+{
+
+  UBYTE i,j;
+
+  TRACE_FUNCTION("dti_conn_reset_conn_parms()");
+
+  dti_channel->erase_channel = FALSE;
+  dti_channel->num_of_conns  = 0;
+  dti_channel->conn_cb       = dti_conn_error_cb;
+  dti_channel->state         = DTI_CONN_STATE_DISCONNECTED;
+
+  for (i=0; i<MAX_DTI_CONN_TUPLES; i++)
+  {
+    dti_channel->tuple_list[i].state = DTI_CONN_STATE_DISCONNECTED;
+    for (j=0; j<NUM_OF_PEERS; j++)
+    {
+      dti_channel->tuple_list[i].peers[j].state  = DTI_CONN_STATE_DISCONNECTED;
+      dti_channel->tuple_list[i].peers[j].ent_id = DTI_ENTITY_INVALID;
+    }
+  }
+}
+
+
+LOCAL BOOL DTItest_dti_id( UBYTE dti_id, void *elem)
+{
+  T_DTI_CONN_CHANNEL *dti_channel = (T_DTI_CONN_CHANNEL *)elem;
+
+  if (dti_channel EQ NULL)
+    return FALSE;
+  if (dti_channel -> dti_id EQ dti_id )
+    return TRUE;
+  else
+    return FALSE;
+}
+
+LOCAL T_DTI_CONN_TUPLE *dti_conn_find_dti_tuple( T_DTI_CONN_CHANNEL *dti_channel, UBYTE tuple_no)
+{
+   return &(dti_channel->tuple_list[tuple_no]);
+}
+
+
+LOCAL T_DTI_CONN_CHANNEL *dti_conn_find_dti_conn( UBYTE dti_id )
+{
+  T_DTI_CONN_CHANNEL *dti_channel;
+
+  TRACE_FUNCTION("dti_conn_find_dti_conn()");
+  
+  /*find channel in list */
+  dti_channel = find_element (dti_channel_list, dti_id, DTItest_dti_id);
+
+  return dti_channel;
+}
+
+
+LOCAL BOOL dti_conn_connect( T_DTI_CONN_CHANNEL* dti_channel, 
+                              T_DTI_ENTITY_ID*   entity_list, 
+                              UBYTE              num_entities, 
+                              T_DTI_CONN_MODE    mode )
+{
+  ULONG link_id;
+  UBYTE tuple_no;
+  UBYTE i;
+
+  TRACE_FUNCTION("dti_conn_connect()");
+
+  dti_channel->state = DTI_CONN_STATE_CONNECTING;
+
+  if (dti_channel->conn_cb)
+  {
+    (void )dti_channel->conn_cb(dti_channel->dti_id, DTI_CONN_STATE_CONNECTING);
+  }
+  else
+  {
+    TRACE_EVENT("conn_cb is NULL");
+  }
+
+
+  if (mode EQ APPEND)
+  {
+    tuple_no = dti_channel->num_of_conns;
+  }
+  else /* SPLIT */
+  {
+    tuple_no = 0;
+    dti_channel->num_of_conns = 0;
+  }
+
+  for (i=0; i<num_entities-1; i++)
+  {
+    dti_channel->tuple_list[tuple_no].peers[0].ent_id = entity_list[i];
+    dti_channel->tuple_list[tuple_no].peers[1].ent_id = entity_list[i+1];
+
+    if ( (dti_channel->tuple_list[tuple_no].state NEQ DTI_CONN_STATE_DISCONNECTING) AND
+         (dti_channel->tuple_list[tuple_no].state NEQ DTI_CONN_STATE_CONNECTING) )
+    {
+      dti_channel->tuple_list[tuple_no].state = DTI_CONN_STATE_CONNECTING;
+      dti_channel->tuple_list[tuple_no].tuple_no = tuple_no;
+      dti_channel->state = DTI_CONN_STATE_CONNECTING;
+
+      link_id = dti_conn_compose_link_id(0, 0, dti_channel->dti_id, tuple_no);
+
+      dti_channel->tuple_list[tuple_no].peers[0].state = DTI_CONN_STATE_CONNECTING;
+      dti_channel->tuple_list[tuple_no].peers[1].state = DTI_CONN_STATE_CONNECTING;
+
+      /* connect a tuple */
+     (void) glob_params.mng_ent_cb(link_id, entity_list[i], entity_list[i+1], DTI_CONNECT);
+      (void)glob_params.mng_ent_cb(link_id, entity_list[i+1], entity_list[i], DTI_CONNECT);
+    }
+
+    tuple_no++;
+  }
+
+  dti_channel->num_of_conns = tuple_no;
+
+  return TRUE;
+}
+
+
+LOCAL BOOL dti_conn_disconnect( T_DTI_CONN_CHANNEL* dti_channel )
+{
+  ULONG link_id;
+  UBYTE i;
+
+  TRACE_FUNCTION("dti_conn_disconnect()");
+
+  dti_channel->state = DTI_CONN_STATE_DISCONNECTING;
+
+  if (dti_channel->conn_cb)
+  {
+    (void)dti_channel->conn_cb(dti_channel->dti_id, DTI_CONN_STATE_DISCONNECTING);
+  }
+  else
+  {
+    TRACE_EVENT("conn_cb is NULL");
+  }
+
+  for (i=0; i < dti_channel->num_of_conns; i++)
+  {
+
+    /* set tuple state only if it is not already DISCONNECTED */
+    if (dti_channel->tuple_list[i].state NEQ DTI_CONN_STATE_DISCONNECTED)
+    {
+      dti_channel->tuple_list[i].state = DTI_CONN_STATE_DISCONNECTING;
+    }
+
+    link_id = dti_conn_compose_link_id(0, 0, dti_channel->dti_id, i);
+
+    /* disconnect only a connected entity */
+    if (dti_channel->tuple_list[i].peers[0].state EQ DTI_CONN_STATE_CONNECTED  OR
+		dti_channel->tuple_list[i].peers[0].state EQ DTI_CONN_STATE_CONNECTING    )
+    {
+      dti_channel->tuple_list[i].peers[0].state = DTI_CONN_STATE_DISCONNECTING;
+      (void)glob_params.mng_ent_cb(link_id, dti_channel->tuple_list[i].peers[0].ent_id, 
+                           dti_channel->tuple_list[i].peers[1].ent_id, DTI_DISCONNECT);
+    }
+
+    /* disconnect only a connected entity */
+    if (dti_channel->tuple_list[i].peers[1].state EQ DTI_CONN_STATE_CONNECTED  OR
+		dti_channel->tuple_list[i].peers[1].state EQ DTI_CONN_STATE_CONNECTING    )
+    {
+      dti_channel->tuple_list[i].peers[1].state = DTI_CONN_STATE_DISCONNECTING;
+      (void)glob_params.mng_ent_cb(link_id, dti_channel->tuple_list[i].peers[1].ent_id, 
+                            dti_channel->tuple_list[i].peers[0].ent_id, DTI_DISCONNECT);
+    }
+  }
+
+  return TRUE;
+}
+
+
+
+
+
+
+
+/********************** GLOBAL FUNCTIONS *****************************/
+
+
+GLOBAL T_DTI_CONN_LINK_ID dti_conn_compose_link_id(UBYTE dummy, UBYTE assoc, UBYTE dti_id, UBYTE tuple_no)
+{
+  T_DTI_CONN_LINK_ID link_id = 0;
+
+  link_id += dummy;
+  link_id <<= 8;
+  link_id += assoc;
+  link_id <<= 8;
+  link_id += dti_id;
+  link_id <<= 8;
+  link_id += tuple_no;
+
+  return link_id;
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT :                             MODULE  : DTI_CONN           |
+| STATE   : code                        ROUTINE : dti_conn_init      |
++--------------------------------------------------------------------+
+
+  PURPOSE : initialise the DTI Connection Manager
+
+*/
+GLOBAL void dti_conn_init( T_DTI_CONN_MNG_ENT_CB* mng_ent_cb )
+{
+  TRACE_FUNCTION("dti_conn_init()");
+
+  dti_channel_list = new_list ();
+ 
+  glob_params.conn_cb      = NULL;
+  glob_params.mng_ent_cb   = mng_ent_cb;
+  glob_params.num_entities = 0;
+
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT :                             MODULE  : DTI_CONN           |
+| STATE   : code                        ROUTINE : dti_conn_new       |
++--------------------------------------------------------------------+
+
+  PURPOSE : register new DTI channel
+
+*/
+GLOBAL UBYTE dti_conn_new(UBYTE dti_id )
+{
+  T_DTI_CONN_CHANNEL *dti_channel;
+
+  TRACE_FUNCTION("dti_conn_new()");
+
+
+  if (dti_id EQ DTI_DTI_ID_NOTPRESENT)
+  {
+    dti_id = dti_conn_get_new_dti_id ();
+  }
+
+  if (dti_id EQ DTI_DTI_ID_NOTPRESENT)
+  {
+    return (DTI_DTI_ID_NOTPRESENT);
+  }
+
+  /* search for an existing entry with correspondant dti_id */
+  dti_channel = dti_conn_find_dti_conn (dti_id);
+
+  if( dti_channel )
+  {
+    return (DTI_DTI_ID_NOTPRESENT); /* couldn't create a new entry */
+  }
+
+  ACI_MALLOC(dti_channel, sizeof(T_DTI_CONN_CHANNEL));
+
+  dti_conn_reset_conn_parms (dti_channel);
+  dti_channel->dti_id = dti_id;
+  insert_list(dti_channel_list, dti_channel);
+
+  return (dti_channel->dti_id);
+}
+
+
+/*
++---------------------------------------------------------------------+
+| PROJECT :                            MODULE  : DTI_CONN             |
+| STATE   : code                       ROUTINE : dti_conn_erase_entry |
++---------------------------------------------------------------------+
+
+  PURPOSE :  erase entry from DTI channel list 
+
+*/
+GLOBAL void dti_conn_erase_entry(UBYTE dti_id)
+{
+  T_DTI_CONN_CHANNEL *dti_channel;
+
+  TRACE_FUNCTION("dti_conn_erase_entry");
+
+  /* find element to be erased */
+  dti_channel = remove_element (dti_channel_list, dti_id, DTItest_dti_id);
+
+  if( dti_channel NEQ NULL ) /* entry not erased yet */
+    ACI_MFREE (dti_channel);
+
+  dti_conn_remove_dti_id(dti_id);
+}
+
+
+/*
++-----------------------------------------------------------------------+
+| PROJECT :               MODULE  : DTI_CONN                            |
+| STATE   : code          ROUTINE : dti_conn_is_dti_channel_connected   |
++-----------------------------------------------------------------------+ 
+
+  PURPOSE : returns TRUE if end-to-end DTI connection is connected and 
+            the given entity is in this connection
+
+*/
+GLOBAL BOOL dti_conn_is_dti_channel_connected( T_DTI_ENTITY_ID ent_id, UBYTE dti_id )
+{
+  UBYTE count = 0;
+  UBYTE i;
+  UBYTE entity_found = FALSE;
+  T_DTI_CONN_CHANNEL *dti_channel = dti_conn_find_dti_conn( dti_id );
+
+  TRACE_FUNCTION("dti_conn_is_dti_channel_connected()");
+
+  if (dti_channel EQ NULL)
+  {
+    TRACE_EVENT_P1("dti_channel for dti_id %d not found", dti_id);
+    return FALSE;
+  }
+
+  for (i=0; i<dti_channel->num_of_conns; i++)
+  {
+    if ((dti_channel->tuple_list[i].peers[0].ent_id EQ ent_id) OR
+        (dti_channel->tuple_list[i].peers[1].ent_id EQ ent_id))
+    {
+      entity_found = TRUE;
+      break;
+    }
+  }
+
+  if (entity_found EQ FALSE)
+    return FALSE;
+
+  if (dti_channel->state EQ DTI_CONN_STATE_CONNECTED)
+  {
+    return TRUE;
+  }
+  else
+  {
+    for (i=0; i<dti_channel->num_of_conns; i++)
+    {
+      if (dti_channel->tuple_list[i].state EQ DTI_CONN_STATE_CONNECTED)
+      {
+        count++;
+      }
+    }
+
+    if (count EQ dti_channel->num_of_conns)
+    {
+      return TRUE;
+    }
+  }
+
+  return FALSE;
+}
+
+
+/*
++--------------------------------------------------------------------------+
+| PROJECT :               MODULE  : DTI_CONN                               |
+| STATE   : code          ROUTINE : dti_conn_is_dti_channel_disconnected   |
++--------------------------------------------------------------------------+ 
+
+  PURPOSE : returns TRUE if end-to-end DTI connection is disconnected
+
+*/
+GLOBAL BOOL dti_conn_is_dti_channel_disconnected( UBYTE dti_id )
+{
+  UBYTE count = 0;
+  UBYTE i;
+  T_DTI_CONN_CHANNEL *dti_channel = dti_conn_find_dti_conn( dti_id );
+
+  TRACE_FUNCTION("dti_conn_is_dti_channel_disconnected()");
+
+
+  if (dti_channel EQ NULL)
+  {
+    return TRUE;
+  }
+
+  if (dti_channel->state EQ DTI_CONN_STATE_DISCONNECTED)
+  {
+    return TRUE;
+  }
+  else
+  {
+    for (i=0; i<dti_channel->num_of_conns; i++)
+    {
+      if (dti_channel->tuple_list[i].state EQ DTI_CONN_STATE_DISCONNECTED)
+      {
+        count++;
+      }
+    }
+
+    if (count EQ dti_channel->num_of_conns)
+    {
+      return TRUE;
+    }
+  }
+
+  return FALSE;
+}
+
+
+/*
++---------------------------------------------------------------------+
+| PROJECT :                             MODULE  : DTI_CONN            |
+| STATE   : code                        ROUTINE : dti_conn_est_dpath  |
++---------------------------------------------------------------------+
+
+  PURPOSE : establishes data path.
+
+*/
+GLOBAL BOOL dti_conn_est_dpath( UBYTE               dti_id,
+                                T_DTI_ENTITY_ID*    entity_list,
+                                UBYTE               num_entities,
+                                T_DTI_CONN_MODE     mode,
+                                T_DTI_CONN_CB*      cb)
+{
+  T_DTI_CONN_CHANNEL *dti_channel;
+
+  TRACE_FUNCTION("dti_conn_est_dpath()");
+
+
+  /*find channel in list */
+  dti_channel = dti_conn_find_dti_conn (dti_id);
+
+  if (dti_channel EQ NULL)
+  {
+    TRACE_EVENT_P1("[ERR] dti_conn_est_dpath: dti_channel dti_id=%x not found",
+                   dti_id);
+    /* DTI ID not found */
+    return FALSE;
+  }
+  
+  if ( entity_list[0] EQ DTI_ENTITY_INVALID OR entity_list[1] EQ DTI_ENTITY_INVALID)
+  {
+    /* improper entity list */
+    TRACE_EVENT("[ERR] improper entity list ");
+    return FALSE;
+  }
+
+  /* if 'SPLIT' then the whole DTI channel must be disconnected before a 
+   * new connection is established 
+   */
+  if ((mode EQ SPLIT) AND (dti_channel->state NEQ DTI_CONN_STATE_DISCONNECTED))
+  {
+    dti_conn_disconnect (dti_channel);
+    
+    /* save new entity list to entity list buffer */
+    memcpy(glob_params.entity_list_buf, entity_list, sizeof(T_DTI_ENTITY_ID)*num_entities);
+    glob_params.num_entities = num_entities;
+    glob_params.conn_cb = cb;
+  }
+  else
+  {
+    dti_channel->conn_cb = cb;
+    dti_conn_connect (dti_channel, entity_list, num_entities, mode);
+  }
+
+  return TRUE;
+}
+
+
+/*
++---------------------------------------------------------------------+
+| PROJECT :                           MODULE  : DTI_CONN              |
+| STATE   : code                      ROUTINE : dti_conn_close_dpath  |
++---------------------------------------------------------------------+
+
+  PURPOSE : closes a DTI connection
+
+*/
+GLOBAL BOOL dti_conn_close_dpath( UBYTE dti_id )
+{
+  T_DTI_CONN_CHANNEL *dti_channel;
+
+  TRACE_FUNCTION("dti_conn_close_dpath()");
+
+
+  dti_channel = dti_conn_find_dti_conn( dti_id );
+  if (dti_channel EQ NULL)
+  {
+    TRACE_EVENT_P1("[ERR] dti_conn_close_dpath: dti_channel dti_id=%x not found",
+                   dti_id);
+    return FALSE;
+  }
+
+  if (dti_channel->state NEQ DTI_CONN_STATE_DISCONNECTED)
+  {
+    dti_channel->state = DTI_CONN_STATE_DISCONNECTING;
+        
+    dti_conn_disconnect (dti_channel);
+  }
+  else
+  {
+    TRACE_EVENT("[ERR] dti_conn_close_dpath: try to close dpath which was DISCONNECTED");
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+
+/*
++-----------------------------------------------------------------------+
+| PROJECT :                        MODULE  : DTI_CONN                   |
+| STATE   : code                   ROUTINE : dti_conn_entity_connected  |
++-----------------------------------------------------------------------+
+
+  PURPOSE : response after a DTI connect request. This function is called 
+            to inform the DTI Connection Manager that a connection is 
+            established.
+
+*/
+GLOBAL void dti_conn_entity_connected( T_DTI_CONN_LINK_ID link_id, 
+                                       T_DTI_ENTITY_ID    ent_id, 
+                                       T_DTI_CONN_RESULT  result )
+{
+  T_DTI_CONN_CHANNEL    *dti_channel;
+  T_DTI_CONN_TUPLE      *tuple;
+  UBYTE                 i;
+  UBYTE                 dti_id = EXTRACT_DTI_ID(link_id);
+  BOOL                  both_entities_connected = FALSE;
+  UBYTE                 count = 0;
+
+  TRACE_FUNCTION("dti_conn_entity_connected()");
+
+
+  dti_channel = dti_conn_find_dti_conn( dti_id );
+  if (dti_channel EQ NULL)
+  {
+    TRACE_EVENT_P1("[ERR] dti_conn_entity_connected: dti_channel link_id=%x not found",
+                   link_id);
+    return;
+  }
+
+  if (result EQ DTI_ERROR)
+  {
+    /* mark entity as disconnected */
+    dti_conn_entity_disconnected( link_id, ent_id );
+
+    /* close the whole DTI channel */
+    dti_conn_close_dpath( dti_id );
+    return;
+  }
+
+  if (dti_channel->state EQ DTI_CONN_STATE_CONNECTED)
+  {
+    TRACE_EVENT_P1("dti channel with dti_id=%x already connected", dti_id);
+    return;
+  }
+
+  tuple = dti_conn_find_dti_tuple( dti_channel, EXTRACT_TUPLE_NO(link_id ) );
+
+  for (i=0; i<NUM_OF_PEERS; i++)
+  {
+    if (tuple->peers[i].state EQ DTI_CONN_STATE_CONNECTED)
+    {
+      count++;
+    }
+
+    if (tuple->peers[i].ent_id EQ ent_id)
+    {
+      if (tuple->peers[i].state EQ DTI_CONN_STATE_CONNECTING)
+      {
+        tuple->peers[i].state = DTI_CONN_STATE_CONNECTED;
+        count++;
+      }
+    }
+    if (count EQ NUM_OF_PEERS)
+    {
+      both_entities_connected = TRUE;
+    }
+  }
+
+  /* if both entities are CONNECTED */
+  if (both_entities_connected)
+  {
+    tuple->state = DTI_CONN_STATE_CONNECTED;
+
+    /* if all other tuples CONNECTED */
+    if (dti_conn_is_dti_channel_connected(ent_id, dti_id))
+    {
+      dti_channel->state = DTI_CONN_STATE_CONNECTED;
+
+      TRACE_EVENT_P1("DTI ID %d connected", dti_id);
+      
+      /* call connect_cb here */
+      if (dti_channel->conn_cb)
+      {
+        (void)dti_channel->conn_cb(dti_id, DTI_CONN_STATE_CONNECTED);
+      }
+      else
+      {
+        TRACE_EVENT("conn_cb is NULL");
+      }
+    }
+  }
+}
+
+
+/*
++-----------------------------------------------------------------------+
+| PROJECT :                     MODULE  : DTI_CONN                      |
+| STATE   : code                ROUTINE : dti_conn_entity_disconnected  |
++-----------------------------------------------------------------------+
+
+  PURPOSE : response after a DTI connect request. This function is called 
+            to inform the DTI Connection Manager that a connection is 
+            closed.
+
+*/
+GLOBAL void dti_conn_entity_disconnected( T_DTI_CONN_LINK_ID link_id, T_DTI_ENTITY_ID ent_id )
+{
+  T_DTI_CONN_CHANNEL    *dti_channel;
+  T_DTI_CONN_TUPLE      *tuple;
+  UBYTE                 i;
+  UBYTE                 dti_id = EXTRACT_DTI_ID(link_id);
+  UBYTE                 count = 0;
+
+  TRACE_FUNCTION("dti_conn_entity_disconnected()");
+
+
+  dti_channel = dti_conn_find_dti_conn( dti_id );
+  if (dti_channel EQ NULL)
+  {
+    TRACE_EVENT_P1("[ERR] dti_conn_entity_disconnected: dti_channel link_id=%x not found",
+                   link_id);
+    return;
+  }
+
+  if (dti_channel->state EQ DTI_CONN_STATE_DISCONNECTED)
+  {
+    TRACE_EVENT_P1("dti channel with dti_id=%x already diconnected", dti_id);
+    return;
+  }
+
+
+  tuple = dti_conn_find_dti_tuple( dti_channel, EXTRACT_TUPLE_NO(link_id) );
+
+  for (i=0; i<NUM_OF_PEERS; i++)
+  {
+    if (tuple->peers[i].state EQ DTI_CONN_STATE_DISCONNECTED)
+    {
+      count++;
+    }
+
+    /* find disconnected entity */
+    if (tuple->peers[i].ent_id EQ ent_id)
+    {
+      tuple->peers[i].state  = DTI_CONN_STATE_DISCONNECTED;
+      tuple->peers[i].ent_id = DTI_ENTITY_INVALID;
+      count++;
+
+      tuple->state = DTI_CONN_STATE_DISCONNECTING;
+
+      if (dti_channel->state EQ DTI_CONN_STATE_CONNECTED)
+      {
+        /* set DTI channel state */
+        dti_channel->state = DTI_CONN_STATE_DISCONNECTING;
+      }
+    }
+  }
+
+  /* if both entities are DISCONNECTED */
+  if (count EQ NUM_OF_PEERS)
+  {
+    /* set tuple state */
+    tuple->state = DTI_CONN_STATE_DISCONNECTED;
+
+    /* if all other tuples DISCONNECTED */
+    if (dti_conn_is_dti_channel_disconnected(dti_id))
+    {
+      dti_channel->state = DTI_CONN_STATE_DISCONNECTED;
+
+      TRACE_EVENT_P1("DTI ID %d disconnected", dti_id);
+
+      /* reset number of conns */
+      dti_channel->num_of_conns = 0;
+      
+      /* call disconnect_cb here */
+      if (dti_channel->conn_cb)
+      {
+        (void)dti_channel->conn_cb(dti_id, DTI_CONN_STATE_DISCONNECTED);
+      }
+      else
+      {
+        TRACE_EVENT("conn_cb is NULL");
+      }
+
+      if (glob_params.num_entities NEQ 0)
+      {
+        dti_channel->conn_cb = glob_params.conn_cb;
+        dti_conn_connect( dti_channel, glob_params.entity_list_buf, glob_params.num_entities, SPLIT );
+        glob_params.num_entities = 0;
+      }
+      else
+      {
+        if (dti_channel->erase_channel EQ TRUE)
+        {
+          /* erase entry in DTI Conn Mng */
+          dti_conn_erase_entry(dti_id);
+        }
+      }
+    }
+  }
+}
+
+
+/*
++-----------------------------------------------------------------------+
+| PROJECT :                     MODULE  : DTI_CONN                      |
+| STATE   : code                ROUTINE : dti_conn_close_all_connections|
++-----------------------------------------------------------------------+
+
+  PURPOSE : This function is called to close all established DTI 
+            connections.
+
+*/
+GLOBAL void dti_conn_close_all_connections()
+{
+  T_DTI_CONN_CHANNEL *dti_channel=NULL;
+
+  TRACE_FUNCTION("dti_conn_close_all_connections()");
+  
+  while(TRUE)
+  {
+    dti_channel = get_next_element (dti_channel_list, dti_channel);
+    if (dti_channel EQ NULL)
+    {
+      return;
+    }
+
+    if (dti_channel->state EQ DTI_CONN_STATE_CONNECTED)
+    {
+      dti_conn_close_dpath(dti_channel->dti_id);
+      dti_channel->erase_channel = TRUE;
+    }
+    else
+    {
+      dti_conn_erase_entry(dti_channel->dti_id);
+    }
+   }
+}