--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-gprs/upm/upm_sndcp_control.c	Fri Oct 16 06:25:50 2020 +0000
@@ -0,0 +1,648 @@
+/*----------------------------------------------------------------------------
+|  Project :  3G PS
+|  Module  :  UPM
++-----------------------------------------------------------------------------
+|             Copyright 2003 Texas Instruments.
+|             All rights reserved. 
+| 
+|             This file is confidential and a trade secret of Texas 
+|             Instruments .
+|             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. 
++-----------------------------------------------------------------------------
+| Purpose:    SNDCP Control state machine implementation in the UPM entity.
+|             For design details, see:
+|             8010.939 UPM Detailed Specification
++---------------------------------------------------------------------------*/
+
+/*==== DECLARATION CONTROL =================================================*/
+
+/*==== INCLUDES =============================================================*/
+
+#include "upm.h"
+
+#include "upm_sndcp_control.h"
+#include "upm_sndcp_output_handler.h"
+#include "upm_aci_output_handler.h"
+#include "upm_sm_output_handler.h"
+#include "upm_mm_output_handler.h"
+
+/*==== CONSTS ===============================================================*/
+
+/*==== TYPES ================================================================*/
+
+typedef void (*T_UPM_SNDCP_CONTROL_TRANSITION_FUNC)(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+
+typedef struct {
+#ifdef DEBUG
+  T_UPM_SNDCP_CONTROL_EVENT            event;
+#endif /* DEBUG */
+  T_UPM_SNDCP_CONTROL_TRANSITION_FUNC  func;
+} T_UPM_SNDCP_CONTROL_TRANSITION;
+
+/*==== LOCALS ===============================================================*/
+
+static void state_event_error   (struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void ignored             (struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_passive_activate(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_active_activate(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_passive_activate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_active_activate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_deactivate   (struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_sn_deactivate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_modify_llc_link(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_sn_modify_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_mmpm_sequence_ind(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+static void handle_status_ind   (struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);
+
+/***********************************************************************
+ * State/Transition Table
+ */
+static const T_UPM_SNDCP_CONTROL_TRANSITION
+transition[UPM_SNDCP_CONTROL_NUMBER_OF_STATES]
+          [UPM_LINK_CONTROL_NUMBER_OF_EVENTS] =
+{
+  { /* S0: UPM SNDCP INACTIVE */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          state_event_error),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        state_event_error),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            state_event_error),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            state_event_error),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    handle_passive_activate),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, handle_active_activate),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   state_event_error)
+  },
+  { /* S1: UPM SNDCP AWAIT ACTIVATE */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          handle_passive_activate_cnf),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        state_event_error),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            state_event_error),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            handle_status_ind),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   handle_deactivate)
+  },
+  { /* S2: UPM SNDCP ACTIVATING */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          handle_active_activate_cnf),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        state_event_error),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            state_event_error),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            handle_status_ind),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   handle_deactivate)
+  },
+  { /* S3: UPM SNDCP ACTIVE */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          state_event_error),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        state_event_error),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            state_event_error),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            handle_status_ind),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        handle_mmpm_sequence_ind),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    handle_modify_llc_link),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   handle_deactivate)
+  },
+  { /* S4: UPM SNDCP MODIFYING */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          state_event_error),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        state_event_error),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            handle_sn_modify_cnf),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            handle_status_ind),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        handle_mmpm_sequence_ind),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   handle_deactivate)
+  },
+  { /* S5: UPM SNDCP DEACTIVATING */
+    M_TRANSITION(UPM_P_SN_ACTIVATE_CNF,          state_event_error),
+    M_TRANSITION(UPM_P_SN_DEACTIVATE_CNF,        handle_sn_deactivate_cnf),
+    M_TRANSITION(UPM_P_SN_MODIFY_CNF,            ignored),
+    M_TRANSITION(UPM_P_SN_STATUS_IND,            handle_status_ind),
+    M_TRANSITION(UPM_P_MMPM_SEQUENCE_IND,        state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_AWAIT_ESTABLISH,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_ESTABLISH_LLC_LINK, state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_MODIFY_LLC_LINK,    state_event_error),
+    M_TRANSITION(UPM_I_SNDCP_RELEASE_LLC_LINK,   ignored)
+  }
+};
+
+/*==== PRIVATE FUNCTIONS ====================================================*/
+
+/*
++------------------------------------------------------------------------------
+| Function    : state_event_error
++------------------------------------------------------------------------------
+| Description : General function used to report state event errors.
+|
+| Parameters  : ptr_context_data - Not used
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void state_event_error(/*@unused@*/ struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_ERROR("UPM SNDCP Control: STATE EVENT ERROR!");
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : ignored
++------------------------------------------------------------------------------
+| Description : General function used for transitions that shall be ignored
+|
+| Parameters  : ptr_context_data - Not used
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void ignored (/*@unused@*/ struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("UPM SNDCP Control: Event ignored.");
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_passive_activate
++------------------------------------------------------------------------------
+| Description : Handle UPM_I_SNDCP_AWAIT_ESTABLISH in S0
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Pointer to compression parameters
++------------------------------------------------------------------------------
+*/
+static void handle_passive_activate(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_passive_activate");
+
+  /* Send SN_ACTIVATE_REQ with establish flag == FALSE */
+  send_sn_activate_req(ptr_context_data, (T_NAS_comp_params *)data, FALSE);
+
+  /* Go to state UPM SNDCP AWAIT ACTIVATE */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_AWAIT_ACTIVATE;
+
+#ifndef UPM_WITHOUT_USER_PLANE
+  /* Suspend Uplink Data */
+  upm_uplink_data_control(ptr_context_data, UPM_I_UPLINK_DATA_SUSPEND,
+                          (void *)UPM_LINK);
+#endif /* UPM_WITHOUT_USER_PLANE */
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_active_activate
++------------------------------------------------------------------------------
+| Description : Handle UPM_I_SNDCP_ESTABLISH_LLC_LINK in S0
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Pointer to compression parameters
++------------------------------------------------------------------------------
+*/
+static void handle_active_activate(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_active_activate");
+
+  /* Send SN_ACTIVATE_REQ with establish flag == TRUE */
+  send_sn_activate_req(ptr_context_data, (T_NAS_comp_params *)data, TRUE);
+
+  /* Go to state UPM SNDCP ACTIVATING */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_ACTIVATING;
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_passive_activate_cnf
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_SN_ACTIVATE_CNF in S1
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void handle_passive_activate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_passive_activate_cnf");
+
+  /* Go to state UPM SNDCP ACTIVE */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_ACTIVE;
+
+#ifndef UPM_WITHOUT_USER_PLANE
+  /* Resume Uplink Data */
+  upm_uplink_data_control(ptr_context_data, UPM_I_UPLINK_DATA_RESUME,
+                          (void *)UPM_LINK);
+#endif /* UPM_WITHOUT_USER_PLANE */
+
+  /* Report link establishment to Link Control */
+  upm_link_control(ptr_context_data, UPM_I_SNDCP_LLC_LINK_ESTABLISHED, NULL);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_active_activate_cnf
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_SN_ACTIVATE_CNF in S2
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void handle_active_activate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_active_activate_cnf");
+
+  /* Go to state UPM SNDCP ACTIVE */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_ACTIVE;
+
+  /* Report link establishment to Link Control */ 
+  upm_link_control(ptr_context_data, UPM_I_SNDCP_LLC_LINK_ESTABLISHED, 
+    ((T_SN_ACTIVATE_CNF*)data)); /*To pass comp params*/
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_deactivate
++------------------------------------------------------------------------------
+| Description : Handle UPM_I_SNDCP_RELEASE_LLC_LINK in S1, S2, S3, or S4.
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Local flag (rel_ind)
++------------------------------------------------------------------------------
+*/
+static void handle_deactivate(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data)
+{
+  U32  rel_ind = (U32)data;
+  (void)TRACE_FUNCTION("handle_deactivate");
+
+  /* SN_DEACTIVATE_REQ no longer sent in dispatcher function, so send here. */
+  send_sn_deactivate_req( ptr_context_data->nsapi, (U8)rel_ind);
+
+  /* Go to state UPM SNDCP DEACTIVATING */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_DEACTIVATING;
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_sn_deactivate_cnf
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_SN_DEACTIVATE_CNF in S5
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void handle_sn_deactivate_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_sn_deactivate_cnf");
+
+  /* Go to state UPM SNDCP INACTIVE */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_INACTIVE;
+
+  /* Report LLC link release to Link Control */
+  upm_link_control(ptr_context_data, UPM_I_SNDCP_LLC_LINK_RELEASED, NULL);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_modify_llc_link
++------------------------------------------------------------------------------
+| Description : Handle UPM_I_SNDCP_MODIFY_LLC_LINK
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void handle_modify_llc_link(struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_modify_llc_link");
+
+  /* At this point, relevant flags in Context Data have been set by Link Control */
+
+  /* Send SN_MODIFY_REQ */
+  send_sn_modify_req(ptr_context_data);
+
+  /* Go to state UPM SNDCP MODIFYING */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_MODIFYING;
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_sn_modify_cnf
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_SN_MODIFY_CNF in S4
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - Not used
++------------------------------------------------------------------------------
+*/
+static void handle_sn_modify_cnf(struct T_CONTEXT_DATA *ptr_context_data, /*@unused@*/ /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_sn_modify_cnf");
+
+  /* Go to state UPM SNDCP ACTIVE */
+  ptr_context_data->sndcp_control_state = UPM_SNDCP_ACTIVE;
+
+  /* Report LLC link modification completion to Link Control */
+  upm_link_control(ptr_context_data, UPM_I_SNDCP_LLC_LINK_MODIFIED, NULL);
+}
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_mmpm_sequence_ind
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_MMPM_SEQUENCE_IND
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - sequence number
++------------------------------------------------------------------------------
+*/
+static void handle_mmpm_sequence_ind(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void* data)
+{
+  U32  seq_no = (U32)data;
+  (void)TRACE_FUNCTION("handle_mmpm_sequence_ind");
+
+  /* Set sequence number for this NSAPI */
+  upm_set_sequence_number(ptr_context_data, (U8)seq_no);
+
+#ifndef UPM_WITHOUT_USER_PLANE
+  /* Uplink Data Control should discard data older than the sequence number
+   * given in data for this NSAPI. */
+  upm_uplink_data_control(ptr_context_data, UPM_I_UPLINK_DATA_DISCARD,
+                          data);
+#endif /* UPM_WITHOUT_USER_PLANE */
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : handle_status_ind
++------------------------------------------------------------------------------
+| Description : Handle UPM_P_SN_STATUS_IND
+|
+| Parameters  : ptr_context_data - Context data
+|               data             - SN_STATUS_IND primitive
++------------------------------------------------------------------------------
+*/
+static void handle_status_ind(struct T_CONTEXT_DATA *ptr_context_data, /*@null@*/ void* data)
+{
+  (void)TRACE_FUNCTION("handle_status_ind");
+
+  TRACE_ASSERT( data != NULL );
+
+  /* If cause is any other than NO_PEER_RESPONSE, SNDCP Control should
+   * deactivate SNDCP. */
+  /*lint -e613 (Possible use of null pointer 'unknown-name' in left argument to operator '->') */
+  if ( (((T_SN_STATUS_IND *)data)->ps_cause.ctrl_value != CAUSE_is_from_llc ||
+        ((T_SN_STATUS_IND *)data)->ps_cause.value.llc_cause 
+                                 !=(U16)CAUSE_LLC_NO_PEER_RES ) &&
+       (((T_SN_STATUS_IND *)data)->ps_cause.ctrl_value != CAUSE_is_from_sndcp ||
+        ((T_SN_STATUS_IND *)data)->ps_cause.value.sn_cause 
+                                 != (U16)CAUSE_SN_NO_PEER_RESPONSE )  )
+  {
+    /* Go to state UPM SNDCP INACTIVE */
+    ptr_context_data->sndcp_control_state = UPM_SNDCP_INACTIVE;
+
+   /*lint +e613 (Possible use of null pointer 'unknown-name' in left argument to operator '->') */
+    /* Report link release to Link Control */
+    upm_link_control(ptr_context_data, UPM_I_SNDCP_LLC_LINK_RELEASED, data);
+  }
+}
+
+/*==== PUBLIC FUNCTIONS =====================================================*/
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_dispatch_mmpm_sequence_ind
++------------------------------------------------------------------------------
+| Description : Helper function for Dispatcher. Dispatches MMPM_SEQUENCE_IND
+|
+| Parameters  : ptr_prim_data    - Pointer to primitive
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_dispatch_mmpm_sequence_ind(T_MMPM_SEQUENCE_IND *ptr_prim_data)
+{
+  int               entries;
+  T_MMPM_npdu_list *entry;
+
+  (void)TRACE_FUNCTION("upm_sndcp_dispatch_mmpm_sequence_ind");
+
+  entries = (int)ptr_prim_data->c_npdu_list;
+  entry   = ptr_prim_data->npdu_list;
+
+  /* Loop over NSAPIs in primitive, and store sequence numbers. */
+  while (entries > 0) {
+    struct T_CONTEXT_DATA *context;
+
+    context = upm_get_context_data_from_nsapi(entry->nsapi);
+    if (context != NULL) {
+      upm_sndcp_control(context, UPM_P_MMPM_SEQUENCE_IND,
+                        (void *)entry->receive_n_pdu_number_val);
+    } else {
+      (void)TRACE_ERROR("Received sequence numbers for non-existent context!");
+    }
+
+    entries--;
+  }
+
+  send_sn_sequence_req(ptr_prim_data);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_dispatch_sn_status_ind
++------------------------------------------------------------------------------
+| Description : Helper function for Dispatcher. Dispatches SN_STATUS_IND
+|
+| Parameters  : ptr_prim_data    - Pointer to primitive
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_dispatch_sn_status_ind(T_SN_STATUS_IND *prim)
+{
+  int                     nsapi;
+  struct T_CONTEXT_DATA  *context;
+
+  (void)TRACE_FUNCTION("upm_sndcp_dispatch_sn_status_ind");
+
+  /* If cause is any other than NO_PEER_RESPONSE, SNDCP Control should
+   * deactivate SNDCP and inform Session Management. */
+  if ( (prim->ps_cause.ctrl_value != CAUSE_is_from_llc ||
+        prim->ps_cause.value.llc_cause != (U16)CAUSE_LLC_NO_PEER_RES ) &&
+       (prim->ps_cause.ctrl_value != CAUSE_is_from_sndcp ||
+        prim->ps_cause.value.sn_cause != (U16)CAUSE_SN_NO_PEER_RESPONSE ) 
+     ) {
+    /* Alert state machine */
+    for (nsapi = (int)NAS_NSAPI_5; nsapi < NAS_SIZE_NSAPI; nsapi++) {
+      if ( (prim->nsapi_set & upm_nsapi2nsapi_set(nsapi)) != 0 ) {
+        context = upm_get_context_data_from_nsapi(nsapi);
+	if (context != NULL) {
+	  upm_sndcp_control(context, UPM_P_SN_STATUS_IND, prim);
+
+          /* Release context data if applicable (link and DTI both down) */
+          upm_check_for_released_context_and_release(context);
+	}
+      }
+    }
+
+    /* Inform Session Management -- Once for all NSAPIs affected */
+    send_sm_status_req(prim->nsapi_set, (T_PS_sapi)prim->sapi,
+                       prim->ps_cause.ctrl_value, prim->ps_cause.value.sn_cause);
+  }
+  /* No action if cause is NO_PEER_RESPONSE */
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_dispatch_sn_sequence_cnf
++------------------------------------------------------------------------------
+| Description : Helper function for Dispatcher. Dispatches SN_SEQUENCE_CNF
+|
+| Parameters  : ptr_prim_data    - Pointer to primitive
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_dispatch_sn_sequence_cnf(T_SN_SEQUENCE_CNF *prim)
+{
+  (void)TRACE_FUNCTION("upm_sndcp_dispatch_sn_sequence_cnf");
+
+  /* No action needed but forwarding sequence numbers to MM */
+  send_mmpm_sequence_res(prim);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_dispatch_sn_count_cnf
++------------------------------------------------------------------------------
+| Description : Helper function for Dispatcher. Dispatches SN_COUNT_CNF
+|
+| Parameters  : prim             - Pointer to primitive
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_dispatch_sn_count_cnf(T_SN_COUNT_CNF *prim)
+{
+  (void)TRACE_FUNCTION("upm_sndcp_dispatch_sn_count_cnf");
+
+  /* No action needed but forwarding as UPM_COUNT_CNF */
+  send_upm_count_cnf(prim->nsapi, prim->octets_uplink, prim->octets_downlink,
+                     prim->packets_uplink, prim->packets_downlink);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_dispatch_upm_count_req
++------------------------------------------------------------------------------
+| Description : Helper function for Dispatcher. Dispatches UPM_COUNT_REQ
+|
+| Parameters  : prim             - Pointer to primitive
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_dispatch_upm_count_req(T_UPM_COUNT_REQ *prim)
+{
+  (void)TRACE_FUNCTION("upm_sndcp_dispatch_upm_count_req");
+
+  /* No action needed but forwarding as SN_COUNT_REQ */
+  send_sn_count_req(prim->nsapi, prim->reset);
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_control_init
++------------------------------------------------------------------------------
+| Description : SNDCP Control state machine initialization function
+|
+| Parameters  : ptr_context_data - Pointer to context data
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_control_init(struct T_CONTEXT_DATA *ptr_context_data)
+{
+  (void)TRACE_FUNCTION("upm_sndcp_control_init");
+
+  TRACE_ASSERT(ptr_context_data != NULL);
+  /*lint -e613 (Possible use of null pointer 'ptr_context_data' in left argument to operator '->') */
+  ptr_context_data->sndcp_control_state   = UPM_SNDCP_INACTIVE;
+  ptr_context_data->gprs_data.pkt_flow_id = (U8)PS_PKT_FLOW_ID_NOT_PRES; 
+  /*lint +e613 (Possible use of null pointer 'ptr_context_data' in left argument to operator '->') */ 	
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_control_exit
++------------------------------------------------------------------------------
+| Description : SNDCP Control state machine exit function
+|
+| Parameters  : ptr_context_data - Pointer to context data
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_control_exit(struct T_CONTEXT_DATA *ptr_context_data)
+{
+  (void)TRACE_FUNCTION("upm_sndcp_control_exit");
+
+  TRACE_ASSERT(ptr_context_data != NULL);
+/*lint -e613 (Possible use of null pointer 'ptr_context_data' in left argument to operator '->') */
+  ptr_context_data->sndcp_control_state   = UPM_SNDCP_INACTIVE;
+  ptr_context_data->gprs_data.pkt_flow_id = (U8)PS_PKT_FLOW_ID_NOT_PRES;
+  /*lint +e613 (Possible use of null pointer 'ptr_context_data' in left argument to operator '->') */
+}
+
+/*
++------------------------------------------------------------------------------
+| Function    : upm_sndcp_control
++------------------------------------------------------------------------------
+| Description : SNDCP Control state machine
+|
+| Parameters  : ptr_context_data - Pointer to context data
+|               event            - Internal event (see upm_sndcp_control.h)
+|               data             - Event dependent parameter
++------------------------------------------------------------------------------
+*/
+void upm_sndcp_control (struct T_CONTEXT_DATA *ptr_context_data,
+                        T_UPM_SNDCP_CONTROL_EVENT event,
+                        /*@null@*/ void* data)
+{
+#ifdef DEBUG
+  T_UPM_SNDCP_CONTROL_STATE old_state;
+  /*@observer@*/
+  static const char *state_name[UPM_SNDCP_CONTROL_NUMBER_OF_STATES] = {
+    "S0_UPM_SNDCP_INACTIVE",
+    "S1_UPM_SNDCP_AWAIT_ACTIVATE",
+    "S2_UPM_SNDCP_ACTIVATING",
+    "S3_UPM_SNDCP_ACTIVE",
+    "S4_UPM_SNDCP_MODIFYING",
+    "S5_UPM_SNDCP_DEACTIVATING"
+  };
+  /*@observer@*/
+  static const char *event_name[UPM_LINK_CONTROL_NUMBER_OF_EVENTS] = {
+    "UPM_P_SN_ACTIVATE_CNF",
+    "UPM_P_SN_DEACTIVATE_CNF",
+    "UPM_P_SN_MODIFY_CNF",
+    "UPM_P_SN_STATUS_IND",
+    "UPM_P_MMPM_SEQUENCE_IND",
+    "UPM_I_SNDCP_AWAIT_ESTABLISH",
+    "UPM_I_SNDCP_ESTABLISH_LLC_LINK",
+    "UPM_I_SNDCP_MODIFY_LLC_LINK",
+    "UPM_I_SNDCP_RELEASE_LLC_LINK"
+  };
+
+  TRACE_ASSERT(ptr_context_data != NULL);
+  TRACE_ASSERT(event < UPM_SNDCP_CONTROL_NUMBER_OF_EVENTS);
+
+  old_state = ptr_context_data->sndcp_control_state;
+
+  if (transition[(U16)old_state][(U16)event].event != event) {
+    (void)TRACE_ERROR("Event table error in upm_sndcp_control!");
+  }
+#endif /* DEBUG */
+
+  transition[(U16)ptr_context_data->sndcp_control_state][(U16)event].func(ptr_context_data, data);
+
+#ifdef DEBUG
+  (void)TRACE_EVENT_P4("SNDCP #%d: %s => %s to %s",
+                       ptr_context_data->nsapi,
+                       event_name[(U16)event],
+                       state_name[(U16)old_state],
+                       state_name[(U16)ptr_context_data->sndcp_control_state]);
+#endif /* DEBUG */
+}
+
+/*==== END OF FILE ==========================================================*/