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view src/g23m-gprs/sm/sm_network_control.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents fa8dc04885d8
children
line wrap: on
line source

/*----------------------------------------------------------------------------
|  Project :  3G PS
|  Module  :  SM
+-----------------------------------------------------------------------------
|             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:    Network Control state machine implementation in the SM entity.
|             For design details, see:
|             8010.908 SM Detailed Specification
+---------------------------------------------------------------------------*/

/*==== DECLARATION CONTROL =================================================*/

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

#include "sm.h"

#include "sm_network_control.h"
#include "sm_context_control.h"

#include "sm_mm_output_handler.h"

#include "sm_qos.h"
#include "sm_tft.h"
#include "sm_timer_handler.h"

/*==== CONSTS ===============================================================*/

/*==== TYPES ================================================================*/

typedef void (*T_SM_NETWORK_CONTROL_TRANSITION_FUNC)(struct T_SM_CONTEXT_DATA *ptr_context_data, /*@null@*/ void *data);

typedef struct {
#ifdef DEBUG
  T_SM_NETWORK_CONTROL_EVENT            event;
#endif /* DEBUG */
  T_SM_NETWORK_CONTROL_TRANSITION_FUNC  func;
} T_SM_NETWORK_CONTROL_TRANSITION;

/*==== LOCALS ===============================================================*/

static void state_event_error(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void ignored          (struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void message_incompatible_with_state(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void message_for_invalid_ti(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);

/* Handler functions for internal events */
static void handle_activate_primary(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_activate_secondary(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_request_activation_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_in_S0(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_during_activation(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_during_modification(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_local(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);

/* Handler functions for incoming air interface messages */
static void handle_activate_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_activate_pdp_context_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_activate_secondary_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_activate_secondary_pdp_context_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_request_pdp_context_activation_in_S0(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_request_pdp_context_activation_in_S1(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_request_pdp_context_activation_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_request_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_request_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_request_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_request_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_accept_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_accept_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_accept_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_reject_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_reject_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_modify_pdp_context_reject_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_pdp_context_request_while_active(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_pdp_context_request_while_deactivating(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_deactivate_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
/* Handler functions for timer timeouts */
static void handle_T3380(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3380_max  (struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3381      (struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3381_max_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3381_max_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3381_max_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3390      (struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_T3390_max  (struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
/* Handler functions for incoming primitives */
static void handle_mmpm_suspend_ind(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);
static void handle_mmpm_resume_ind(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data);

/***********************************************************************
 * State/Transition Table
 */
static const T_SM_NETWORK_CONTROL_TRANSITION
transition[SM_NETWORK_CONTROL_NUMBER_OF_STATES][SM_NETWORK_CONTROL_NUMBER_OF_EVENTS] =
{
  {  /* S0: SM NETWORK DEACTIVATED */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_for_invalid_ti),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_for_invalid_ti),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_for_invalid_ti),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_for_invalid_ti),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        state_event_error),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         state_event_error),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            message_for_invalid_ti),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             message_for_invalid_ti),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             message_for_invalid_ti),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        handle_request_pdp_context_activation_in_S0),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       ignored),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 state_event_error),
    M_TRANSITION(SM_T_T3381_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              handle_activate_primary),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            handle_activate_secondary),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     handle_request_activation_reject),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_in_S0)
  },
  {  /* S1: SM NETWORK ACTIVATING PRIMARY */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           handle_activate_pdp_context_accept),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           handle_activate_pdp_context_reject),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        handle_request_pdp_context_activation_in_S1),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 handle_T3380),
    M_TRANSITION(SM_T_T3380_MAX,                             handle_T3380_max),
    M_TRANSITION(SM_T_T3381,                                 state_event_error),
    M_TRANSITION(SM_T_T3381_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_during_activation)
  },
  {  /* S2: SM NETWORK ACTIVATING SECONDARY */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, handle_activate_secondary_pdp_context_accept),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, handle_activate_secondary_pdp_context_reject),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        message_incompatible_with_state),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 handle_T3380),
    M_TRANSITION(SM_T_T3380_MAX,                             handle_T3380_max),
    M_TRANSITION(SM_T_T3381,                                 state_event_error),
    M_TRANSITION(SM_T_T3381_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_during_activation)
  },
  {  /* S3: SM NETWORK ACTIVATING ADDING TFTS */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            handle_modify_pdp_context_request_in_S3),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             handle_modify_pdp_context_accept_in_S3),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             handle_modify_pdp_context_reject_in_S3),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        message_incompatible_with_state),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 handle_T3381),
    M_TRANSITION(SM_T_T3381_MAX,                             handle_T3381_max_in_S3),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_during_modification)
  },
  {  /* S4: SM NETWORK ACTIVATED */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            handle_modify_pdp_context_request_in_S4),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        handle_request_pdp_context_activation_in_S4),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       ignored),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 state_event_error),
    M_TRANSITION(SM_T_T3381_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        handle_modify_in_S4),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_in_S4)
  },
  {  /* S5: SM NETWORK MODIFYING */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            handle_modify_pdp_context_request_in_S5),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             handle_modify_pdp_context_accept_in_S5),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             handle_modify_pdp_context_reject_in_S5),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        message_incompatible_with_state),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 handle_T3381),
    M_TRANSITION(SM_T_T3381_MAX,                             handle_T3381_max_in_S5),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_during_modification)
  },
  {  /* S6: SM NETWORK MODIFYING ADDITIONAL TFTS */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_active),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            handle_modify_pdp_context_request_in_S6),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             handle_modify_pdp_context_accept_in_S6),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             handle_modify_pdp_context_reject_in_S6),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        message_incompatible_with_state),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 handle_T3381),
    M_TRANSITION(SM_T_T3381_MAX,                             handle_T3381_max_in_S6),
    M_TRANSITION(SM_T_T3390,                                 state_event_error),
    M_TRANSITION(SM_T_T3390_MAX,                             state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    handle_deactivate_during_modification)
  },
  {  /* S7: SM NETWORK DEACTIVATING */
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_PDP_CONTEXT_REJECT,           message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT, message_incompatible_with_state),
    M_TRANSITION(SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT, message_incompatible_with_state),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST,        handle_deactivate_pdp_context_request_while_deactivating),
    M_TRANSITION(SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT,         handle_deactivate_pdp_context_accept),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REQUEST,            message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_ACCEPT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_MODIFY_PDP_CONTEXT_REJECT,             message_incompatible_with_state),
    M_TRANSITION(SM_M_REQUEST_PDP_CONTEXT_ACTIVATION,        message_incompatible_with_state),
    M_TRANSITION(SM_M_SM_STATUS,                             state_event_error),
    M_TRANSITION(SM_P_MMPM_RESUME_IND,                       handle_mmpm_resume_ind),
    M_TRANSITION(SM_P_MMPM_SUSPEND_IND,                      handle_mmpm_suspend_ind),
    M_TRANSITION(SM_T_T3380,                                 state_event_error),
    M_TRANSITION(SM_T_T3380_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3381,                                 state_event_error),
    M_TRANSITION(SM_T_T3381_MAX,                             state_event_error),
    M_TRANSITION(SM_T_T3390,                                 handle_T3390),
    M_TRANSITION(SM_T_T3390_MAX,                             handle_T3390_max),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_PRIMARY,              state_event_error),
    M_TRANSITION(SM_I_NETWORK_ACTIVATE_SECONDARY,            state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE_LOCAL,              handle_deactivate_local),
    M_TRANSITION(SM_I_NETWORK_MODIFY,                        state_event_error),
    M_TRANSITION(SM_I_NETWORK_REQUEST_ACTIVATION_REJECT,     state_event_error),
    M_TRANSITION(SM_I_NETWORK_DEACTIVATE,                    ignored)
  }
};

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

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_mark_context_active
+------------------------------------------------------------------------------
| Description : Mark context in network state ACTIVE
|
| Parameters  : nsapi              - context index
+------------------------------------------------------------------------------
*/
static void sm_nw_mark_context_active(int /*@alt U8@*/ nsapi)
{
  sm_data.sm_context_activation_status
    = sm_add_nsapi_to_nsapi_set(nsapi, sm_data.sm_context_activation_status);
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_mark_context_inactive
+------------------------------------------------------------------------------
| Description : Mark context in network state INACTIVE
|
| Parameters  : nsapi              - context index
+------------------------------------------------------------------------------
*/
static void sm_nw_mark_context_inactive(int /*@alt U8@*/ nsapi)
{
  sm_data.sm_context_activation_status
    = sm_remove_nsapi_from_nsapi_set(nsapi, sm_data.sm_context_activation_status);
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_mark_nsapi_set_inactive
+------------------------------------------------------------------------------
| Description : Mark a set of contexts in network state INACTIVE
|
| Parameters  : nsapi_set          - Set of NSAPIs to mark inactive
+------------------------------------------------------------------------------
*/
static void sm_nw_mark_nsapi_set_inactive(U16 nsapi_set)
{
  sm_data.sm_context_activation_status &= 0xffff ^ nsapi_set;
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_get_next_free_ti
+------------------------------------------------------------------------------
| Description : Traverse sm_context_array and find the lowest unused TI.
|
| Parameters  : context             - context that needs TI
+------------------------------------------------------------------------------
*/
static U8 sm_nw_get_next_free_ti(struct T_SM_CONTEXT_DATA *context_to_get_ti)
{
  int nsapi;
  U16 ti_mask = (U16)0x07ff;

  /* Iterate through sm_context_array and find the lowest available TI */
  for (nsapi = (int)NAS_NSAPI_5; nsapi < NAS_SIZE_NSAPI; nsapi++)
  {
    struct T_SM_CONTEXT_DATA *context;

    context = sm_get_context_data_from_nsapi(nsapi);
    if (context != NULL && context != context_to_get_ti
        && (context->ti & (U8)SM_TI_FLAG) == (U8)0 )
    {
      ti_mask &= 0x7ff ^ (1 << context->ti);
    }
  }

  if (ti_mask != 0)
  {
    int index;
    for (index = 0;
         index < SM_MAX_NSAPI_OFFSET && (ti_mask & (1UL << (U16)index)) == 0;
         index++)
      {};
    return (U8)index;
  } else {
    /* No TIs available */
    return (U8)0;
  }
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_initiate_deactivation
+------------------------------------------------------------------------------
| Description : General function for aborting a procedure and deactivating
|
| Parameters  : context          - context data
+------------------------------------------------------------------------------
*/
static void sm_nw_initiate_deactivation(struct T_SM_CONTEXT_DATA *context,
                                        T_CAUSE_ps_cause *ps_cause)
{
  /* Stop any active timer and start T3390 in stead */
  sm_timer_stop(context);
  sm_timer_start(context, SM_TIMER_T3390);

  /* Send message DEACTIVATE PDP CONTEXT REQUEST */
  send_msg_deactivate_pdp_context_request(context, ps_cause, FALSE);
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_store_mt_modify_parameters
+------------------------------------------------------------------------------
| Description : Examines a T_D_MODIFY_PDP_CONTEXT_REQUEST message and stores
|               the parameters included.  Returns flags which indicate the
|               parameters that were updated.
|
| Parameters  : context          - context data
|               msg              - T_D_MODIFY_PDP_CONTEXT_REQUEST
+------------------------------------------------------------------------------
*/
static T_SM_UPDATE_FLAGS
sm_nw_store_mt_modify_parameters(struct T_SM_CONTEXT_DATA *context,
                                 T_D_MODIFY_PDP_CONTEXT_REQUEST *msg)
{
  T_SM_UPDATE_FLAGS  update_flags;
  sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);

  update_flags             = SM_UPDATE_QOS;

  /* Store GSM RAT parameters, if present */
  if (context->radio_prio != msg->radio_prio.radio_prio_val ||
      context->sapi       != msg->llc_sapi.sapi)
  {
    context->radio_prio    = msg->radio_prio.radio_prio_val;
    context->sapi          = msg->llc_sapi.sapi;
    update_flags          |= SM_UPDATE_SAPI_RADIO_PRIO_PFI;
  }

  /* Store PFI, if present */
  if (msg->v_pfi != (U8)FALSE && msg->pfi.pfi_val != context->pfi)
  {
    sm_set_pfi_included(context, TRUE);
    context->pfi           = msg->pfi.pfi_val;
    update_flags          |= SM_UPDATE_SAPI_RADIO_PRIO_PFI;
  }

  /* IP address "modified" (== assigned late)? Store, if so. */
  if (msg->v_address != (U8)FALSE)
  {
    sm_nw_store_negotiated_address(context, &msg->address, msg->v_address);
    update_flags          |= SM_UPDATE_ADDRESS;
  }

  return update_flags;
}

/*
+------------------------------------------------------------------------------
| Function    : sm_nw_store_modify_accept_parameters
+------------------------------------------------------------------------------
| Description : Examines a T_D_MODIFY_PDP_CONTEXT_ACCEPT message and stores
|               the parameters included.  Returns flags which indicate the
|               parameters that were updated.
|
| Parameters  : context          - context data
|               msg              - T_D_MODIFY_PDP_CONTEXT_REQUEST
+------------------------------------------------------------------------------
*/
static T_SM_UPDATE_FLAGS
sm_nw_store_modify_accept_parameters(struct T_SM_CONTEXT_DATA *context,
                                     T_D_MODIFY_PDP_CONTEXT_ACCEPT *msg)
{
  T_SM_UPDATE_FLAGS  update_flags = (T_SM_UPDATE_FLAGS)0;

  /* Store GSM RAT parameters, if present */
  if (msg->v_llc_sapi != (U8)FALSE)
  {
    context->sapi       = msg->llc_sapi.sapi;
    update_flags        = SM_UPDATE_SAPI_RADIO_PRIO_PFI;
  }

  if (msg->v_radio_prio != (U8)FALSE &&
      msg->radio_prio.radio_prio_val != context->radio_prio)
  {
    context->radio_prio = msg->radio_prio.radio_prio_val;
    update_flags        = SM_UPDATE_SAPI_RADIO_PRIO_PFI;
  }

  /* Store PFI, if present */
  if (msg->v_pfi != (U8)FALSE &&
      msg->pfi.pfi_val != context->pfi)
  {
    sm_set_pfi_included(context, TRUE);
    context->pfi         = msg->pfi.pfi_val;
    update_flags         = SM_UPDATE_SAPI_RADIO_PRIO_PFI;
  }

  return update_flags;
}

/*
+------------------------------------------------------------------------------
| Function    : state_event_error
+------------------------------------------------------------------------------
| Description : General function used to report state event errors.
|
| Parameters  : context          - Not used
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void state_event_error(/*@unused@*/ struct T_SM_CONTEXT_DATA *context, /*@unused@*/ /*@null@*/ void *data)
{
  (void)TRACE_ERROR("SM Network Control: STATE EVENT ERROR!");
}

/*
+------------------------------------------------------------------------------
| Function    : ignored
+------------------------------------------------------------------------------
| Description : General function used for transitions that shall be ignored
|
| Parameters  : context          - Not used
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void ignored(/*@unused@*/ struct T_SM_CONTEXT_DATA *context, /*@unused@*/ /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("SM Network Control: Event ignored.");
}

/*
+------------------------------------------------------------------------------
| Function    : message_incompatible_with_state
+------------------------------------------------------------------------------
| Description : General function used for reporting illegal air interface
|               messages in the current state
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void message_incompatible_with_state(/*@unused@*/ struct T_SM_CONTEXT_DATA *context, /*@unused@*/ /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("message_incompatible_with_state");

  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_MSG_TYPE_INCOMPATIBLE_WITH_STATE);
  send_msg_sm_status(context->ti, sm_get_nw_cause(context));
}

/*
+------------------------------------------------------------------------------
| Function    : message_for_invalid_ti
+------------------------------------------------------------------------------
| Description : General function used for replying to network messages
|               received for a context in state S0 (invalid TI)
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void message_for_invalid_ti(/*@unused@*/ struct T_SM_CONTEXT_DATA *context, /*@unused@*/ /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("message_for_invalid_ti");

  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_INVALID_TI);
  send_msg_sm_status(context->ti, sm_get_nw_cause(context));
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_primary
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_ACTIVATE_PRIMARY in S0
|
| Parameters  : context          - Context data
|               data             - SMREG_PDP_ACTIVATE_REQ *
+------------------------------------------------------------------------------
*/
static void handle_activate_primary(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_SMREG_PDP_ACTIVATE_REQ *prim = (T_SMREG_PDP_ACTIVATE_REQ *)data;

  (void)TRACE_FUNCTION("handle_activate_primary");

  if (prim != NULL)
  {
    memcpy(&context->comp_params, &prim->comp_params, sizeof(T_NAS_comp_params));

    sm_qos_copy_to_sm(&context->requested_qos, &prim->qos, prim->ctrl_qos);
    sm_qos_copy_to_sm(&context->minimum_qos, (T_PS_qos *)&prim->min_qos,
                      (T_PS_ctrl_qos)prim->ctrl_min_qos);

    sm_nw_store_requested_address(context, prim->pdp_type,
                                  prim->ctrl_ip_address, &prim->ip_address);

    /* Free APN (necessary if this is a network requested activation) */
    sm_nw_free_apn(context);

    /* Store APN for negotiation, if present */
    if (prim->apn.c_apn_buf > (U8)0)
    {
      sm_nw_allocate_and_copy_apn(context, prim->apn.c_apn_buf, prim->apn.apn_buf);
    }

    /* Store TFT for later addition, if present */
    TRACE_ASSERT(context->requested_tft.ptr_tft_pf == NULL);
    if (prim->v_tft != (U8)FALSE && prim->tft.c_tft_pf > (U8)0)
    {
      sm_nw_allocate_and_copy_requested_tft(context, &prim->tft);
    } else {
      context->requested_tft.c_tft_pf = (U8)0;
    }

    /* Store PCO for negotiation, if present */
    sm_nw_free_requested_pco(context);
    if (prim->sdu.l_buf > 0)
    {
      U16 pco_len = prim->sdu.l_buf >> 3;
      sm_nw_allocate_and_copy_requested_pco(context, pco_len,
                                            &prim->sdu.buf[(prim->sdu.o_buf >> 3)]);
    }

    /* Allocate TI for context unless this was a NW initiated activation */
    if ((context->ti & SM_TI_FLAG) == (U8)0)
    {
      context->ti = sm_nw_get_next_free_ti(context);
    }
  } else {
    /* No SMREG primitive: This is a re-activation.  Use current parameters. */ 
    /* The following function call can cause problems in reactivation cases 
     * where the first pdp context uses dynamic addressing. When the following
     * function is called the 'reactivated' context uses address issued by the 
     * network for the first pdp activation. This will result in static addressing
     * and may cause pdp activation reject from networks that doesn't support 
     * static addressing.
     */
    /*sm_nw_copy_negotiated_address_to_requested(context);*/
  }

  /* Mark context as active */
  sm_nw_mark_context_active(context->nsapi);

  /* Start timer T3380 for this NSAPI/context */
  sm_timer_start(context, SM_TIMER_T3380);

  /* Send ACTIVATE PDP CONTEXT REQUEST message */
  send_msg_activate_pdp_context_request(context);

  /* Go to state SM NETWORK ACTIVATING PRIMARY */
  context->network_control_state = SM_NETWORK_ACTIVATING_PRIMARY;
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_secondary
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_ACTIVATE_SECONDARY in S0
|
| Parameters  : context          - Context data
|               data             - T_SMREG_PDP_ACTIVATE_SEC_REQ *
+------------------------------------------------------------------------------
*/
static void handle_activate_secondary(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_SMREG_PDP_ACTIVATE_SEC_REQ *prim = (T_SMREG_PDP_ACTIVATE_SEC_REQ *)data;

  (void)TRACE_FUNCTION("handle_activate_secondary");

  if (prim != NULL)
  {
    memcpy(&context->comp_params, &prim->comp_params, sizeof(T_NAS_comp_params));

    sm_qos_copy_to_sm(&context->requested_qos, &prim->qos, prim->ctrl_qos);
    sm_qos_copy_to_sm(&context->minimum_qos, (T_PS_qos *)&prim->min_qos,
                      (T_PS_ctrl_qos)prim->ctrl_min_qos);

    /* Store TFT for later addition, if present */
    sm_nw_free_requested_tft(context);
    if (prim->v_tft != (U8)FALSE && prim->tft.c_tft_pf > (U8)0)
    {
      sm_nw_allocate_and_copy_requested_tft(context, &prim->tft);
    } else {
      context->requested_tft.c_tft_pf = (U8)0;
    }
    /* Allocate TI for context */
    context->ti = sm_nw_get_next_free_ti(context);
  } else {
    /* No SMREG primitive: This is a re-activation.  Use current parameters. */
  }

  /* Mark context as active */
  sm_nw_mark_context_active(context->nsapi);

  /* Start timer T3380 for this NSAPI/context */
  sm_timer_start(context, SM_TIMER_T3380);

  /* Send ACTIVATE SECONDARY PDP CONTEXT REQUEST message */
  send_msg_activate_secondary_pdp_context_request(context);

  /* Go to state SM NETWORK ACTIVATING SECONDARY */
  context->network_control_state = SM_NETWORK_ACTIVATING_SECONDARY;
}

/*
+------------------------------------------------------------------------------
| Function    : handle_request_activation_reject
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_REQUEST_ACTIVATION_REJECT in S0
|
| Parameters  : context          - Context data
|               data             - Not used (cause set in context data)
+------------------------------------------------------------------------------
*/
static void handle_request_activation_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_request_activation_reject");

  /* Send REQUEST PDP CONTEXT ACTIVATION REJECT message */
  send_msg_request_pdp_context_activation_reject(context, sm_get_nw_cause(context));
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_in_S4
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_MODIFY in S4
|
| Parameters  : context          - Context data
|               data             - T_SMREG_PDP_MODIFY_REQ *
+------------------------------------------------------------------------------
*/
static void handle_modify_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_SMREG_PDP_MODIFY_REQ *prim = (T_SMREG_PDP_MODIFY_REQ *)data;
  BOOL                    start_modification = FALSE;

  (void)TRACE_FUNCTION("handle_modify_in_S4");

  /* If prim == NULL this is a context upgrade (RAB re-establishment) */
  if (prim != NULL)
  {
    if (prim->ctrl_qos != PS_is_qos_not_present)
    {
      sm_qos_copy_to_sm(&context->requested_qos, &prim->qos, prim->ctrl_qos);
      start_modification          = TRUE;
    }

    if (prim->ctrl_min_qos != PS_is_min_qos_not_present)
    {
      sm_qos_copy_to_sm(&context->minimum_qos, (T_PS_qos *)&prim->min_qos,
                        (T_PS_ctrl_qos)prim->ctrl_min_qos);
      if (!sm_qos_is_minimum_satisfied_by_sm(context, &context->accepted_qos))
      {
        start_modification        = TRUE;
      }
    }

    /* Store TFT for later addition, if present */
    if (prim->v_tft != (U8)FALSE)
    {
      if (prim->tft.c_tft_pf > (U8)0)
      {
        sm_nw_allocate_and_copy_requested_tft(context, &prim->tft);
      } else {
        context->requested_tft.c_tft_pf = (U8)0;
      }
      if (sm_tft_more_to_modify(context))
      {
        start_modification        = TRUE;
      }
    }
  } else {
    /* Prim == NULL: context upgrade (RAB re-establishment) */
    /* Start modification with originally requested parameters */
    start_modification            = TRUE;
  }

  if (start_modification)
  {
    /* Start timer T3381 for this NSAPI/context */
    sm_timer_start(context, SM_TIMER_T3381);

    /* Send MODIFY PDP CONTEXT REQUEST message */
    send_msg_modify_pdp_context_request(context);

    /* Go to state SM NETWORK MODIFYING */
    context->network_control_state = SM_NETWORK_MODIFYING;
  }
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_in_S0
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_DEACTIVATE in S0
|
| Parameters  : context          - Context data
|               data             - rel_ind flag
+------------------------------------------------------------------------------
*/
static void handle_deactivate_in_S0(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_deactivate_in_S0");

  /* Report success deactivation to Context Control (already inactive) */
  sm_context_control(context, SM_I_NETWORK_DEACTIVATE_COMPLETED, data);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_during_activation
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_DEACTIVATE in S1 or S2
|
| Parameters  : context          - Context data
|               data             - Cause (T_CAUSE_ps_cause *)
+------------------------------------------------------------------------------
*/
static void handle_deactivate_during_activation(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_deactivate_during_activation");

  TRACE_ASSERT(data != NULL);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Stop T3380, and start deactivation */
  sm_nw_initiate_deactivation(context, (T_CAUSE_ps_cause *)data);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_in_S4
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_DEACTIVATE in S4
|
| Parameters  : context          - Context data
|               data             - Cause (T_CAUSE_ps_cause *)
+------------------------------------------------------------------------------
*/
static void handle_deactivate_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_deactivate_in_S4");

  TRACE_ASSERT(data != NULL);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Initiate deactivation; data contains cause */
  sm_nw_initiate_deactivation(context, (T_CAUSE_ps_cause *)data);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_during_modification
+------------------------------------------------------------------------------
| Description : Handle event SM_I_NETWORK_DEACTIVATE in S3, S5, or S6
|
| Parameters  : context          - Context data
|               data             - Cause (T_CAUSE_ps_cause *)
+------------------------------------------------------------------------------
*/
static void handle_deactivate_during_modification(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_deactivate_during_modification");

  TRACE_ASSERT(data != NULL);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Initiate deactivation; data contains cause */
  sm_nw_initiate_deactivation(context, (T_CAUSE_ps_cause *)data);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_local
+------------------------------------------------------------------------------
| Description : Handle SM_I_NETWORK_DEACTIVATE_LOCAL
|
| Parameters  : context          - context data
|               data             - unused
+------------------------------------------------------------------------------
*/
static void handle_deactivate_local(struct T_SM_CONTEXT_DATA *context, /*@unused@*/ /*@null@*/ void *data)
{
  /* Remove active TFT - this is necessary in case of reactivations */
  sm_nw_free_active_tft(context);

  /* Free stored coded message - if any */
  sm_free_coded_msg(context);

  /* Mark context as inactive */
  sm_nw_mark_context_inactive(context->nsapi);

  context->network_control_state = SM_NETWORK_DEACTIVATED;
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_pdp_context_accept
+------------------------------------------------------------------------------
| Description : Handle event SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT in S1
|
| Parameters  : context          - Context data
|               data             - T_ACTIVATE_PDP_CONTEXT_ACCEPT *
+------------------------------------------------------------------------------
*/
static void handle_activate_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_ACTIVATE_PDP_CONTEXT_ACCEPT *msg = (T_ACTIVATE_PDP_CONTEXT_ACCEPT *)data;
  T_SM_UPDATE_FLAGS     update_flags = (T_SM_UPDATE_FLAGS)0; 
  BOOL  is_address_changed = FALSE;

  (void)TRACE_FUNCTION("handle_activate_pdp_context_accept");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3380 */
  sm_timer_stop(context);

  if (!sm_is_llc_sapi_valid(msg->llc_sapi.sapi, context->ti))
  {
    return;
  }
   
  is_address_changed = sm_is_address_changed_with_reactivation(context, 
                                               &msg->address, msg->v_address);
  /* Check whether negotiated QoS satisfies minimum QoS */
  if ( sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos) && 
                                         !(is_address_changed) )
  {
    if (context->accepted_qos.ctrl_qos != PS_is_qos_not_present)
    {
      update_flags |= SM_UPDATE_QOS;
    }

    /* QoS >= minimum QoS: Store negotiated parameters */
    sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);

    /* Store GSM RAT parameters */
    context->radio_prio        = msg->radio_prio.radio_prio_val;
    context->sapi              = msg->llc_sapi.sapi;

    /* Store PFI, if present */
    if (msg->v_pfi != (U8)FALSE)
    {
      sm_set_pfi_included(context, TRUE);
      context->pfi             = msg->pfi.pfi_val;
    } else {
      sm_set_pfi_included(context, FALSE);
    }

    /* Store negotiated IP address, if any */
    sm_nw_store_negotiated_address(context, &msg->address, msg->v_address);

    /* Store negotiated PCO, if any */
    if (msg->v_pco != (U8)FALSE && msg->pco.c_pco_value > (U8)0)
    {
      sm_nw_allocate_and_copy_negotiated_pco(context, msg->pco.c_pco_value,
                                             msg->pco.pco_value);
    } else {
      context->negotiated_pco     = NULL;
    }

    /* Check whether to add TFT */
    if (sm_tft_more_to_modify(context))
    {
      /* Start T3381 */
      sm_timer_start(context, SM_TIMER_T3381);
      /* Send MODIFY PDP CONTEXT REQUEST with remaining TFTs */
      send_msg_modify_pdp_context_request(context);
      /* Go to state SM NETWORK ACTIVATING ADDING TFTS */
      context->network_control_state = SM_NETWORK_ACTIVATING_ADDING_TFTS;
    } else {
      /* No TFT: go to state SM NETWORK ACTIVATED, and inform Context Control */
      context->network_control_state = SM_NETWORK_ACTIVATED;

      sm_context_control(context, SM_I_NETWORK_ACTIVATE_COMPLETED,
                         (void *)update_flags);
    }
  } else {  /* if (sm_qos_is_minimum_satisfied_by_aim()) */
    /* Minimum QoS not satisfied - Start deactivation, T3390 */
    sm_timer_start(context, SM_TIMER_T3390);

    /* Send DEACTIVATE PDP CONTEXT REQUEST message */
    if (is_address_changed) {
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, 
                               (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
    }
    else {
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    }
    send_msg_deactivate_pdp_context_request(context, sm_get_nw_cause(context), FALSE);

    /* Go to state SM NETWORK DEACTIVATING */
    context->network_control_state = SM_NETWORK_DEACTIVATING;

    /* Report failed activation to Context Control (with network deactivation) */
     
    sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
  } /* if */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_pdp_context_reject
+------------------------------------------------------------------------------
| Description : Handle event SM_M_ACTIVATE_PDP_CONTEXT_REJECT in S1
|
| Parameters  : context          - Context data
|               data             - T_ACTIVATE_PDP_CONTEXT_REJECT *
+------------------------------------------------------------------------------
*/
static void handle_activate_pdp_context_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_ACTIVATE_PDP_CONTEXT_REJECT *msg = (T_ACTIVATE_PDP_CONTEXT_REJECT *)data;
  (void)TRACE_FUNCTION("handle_activate_pdp_context_reject");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Store erroneous PCO, if any */
  if (msg->v_pco != (U8)FALSE && msg->pco.c_pco_value > (U8)0)
  {
    sm_nw_allocate_and_copy_negotiated_pco(context, msg->pco.c_pco_value,
                                           msg->pco.pco_value);
  } else {
    context->negotiated_pco     = NULL;
  }

  /* Stop timer T3380 */
  sm_timer_stop(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Mark context as inactive */
  sm_nw_mark_context_inactive(context->nsapi);

  /* Build cause structure */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Re-synchronise MMs PDP context status */
  send_mmpm_pdp_context_status_req();

  /* Report failed activation to Context Control (no network deactivation) */
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)FALSE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_secondary_pdp_context_accept
+------------------------------------------------------------------------------
| Description : Handle event SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT
|
| Parameters  : context          - Context data
|               data             - T_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT *
+------------------------------------------------------------------------------
*/
static void handle_activate_secondary_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT *msg = (T_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT *)data;

  (void)TRACE_FUNCTION("handle_activate_secondary_pdp_context_accept");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;
	  
  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3380 */
  sm_timer_stop(context);

  if (!sm_is_llc_sapi_valid(msg->llc_sapi.sapi, context->ti))
  {
    return;
  }

  /* Check whether negotiated QoS satisfies minimum QoS */
  if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
  {
    /* QoS >= minimum QoS: Store negotiated parameters */
    sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);

    /* Store GSM RAT parameters */
    context->radio_prio        = msg->radio_prio.radio_prio_val;
    context->sapi              = msg->llc_sapi.sapi;

    /* Store PFI, if present */
    if (msg->v_pfi != (U8)FALSE)
    {
      sm_set_pfi_included(context, TRUE);
      context->pfi             = msg->pfi.pfi_val;
    } else {
      sm_set_pfi_included(context, FALSE);
    }

    /* Check whether to add TFT */
    if (sm_tft_more_to_modify(context))
    {
      /* Start T3381 */
      sm_timer_start(context, SM_TIMER_T3381);
      /* Send MODIFY PDP CONTEXT REQUEST with remaining TFTs */
      send_msg_modify_pdp_context_request(context);
      /* Go to state SM NETWORK ACTIVATING ADDING TFTS */
      context->network_control_state = SM_NETWORK_ACTIVATING_ADDING_TFTS;
    } else {
      /* No TFT: go to state SM NETWORK ACTIVATED, and inform Context Control */
      context->network_control_state = SM_NETWORK_ACTIVATED;

      sm_context_control(context, SM_I_NETWORK_ACTIVATE_COMPLETED, NULL);
    }
  } else {  /* if (sm_qos_is_minimum_satisfied_by_aim()) */
    /* Minimum QoS not satisfied - go to state SM NETWORK DEACTIVATING */
    context->network_control_state = SM_NETWORK_DEACTIVATING;

    /* Start deactivation, T3390 */
    sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

    /* Report failed activation to Context Control (with network deactivation) */
    sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
  } /* if */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_activate_secondary_pdp_context_reject
+------------------------------------------------------------------------------
| Description : Handle event SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT
|
| Parameters  : context          - Context data
|               data             - T_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT *
+------------------------------------------------------------------------------
*/
static void handle_activate_secondary_pdp_context_reject(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT *msg = (T_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT *)data;
  (void)TRACE_FUNCTION("handle_activate_secondary_pdp_context_reject");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3380 */
  sm_timer_stop(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Mark context as inactive */
  sm_nw_mark_context_inactive(context->nsapi);

  /* Build cause structure */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Re-synchronise MMs PDP context status */
  send_mmpm_pdp_context_status_req();

  /* Report failed activation to Context Control (no network deactivation) */
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)FALSE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_request_pdp_context_activation_in_S0
+------------------------------------------------------------------------------
| Description : Handle event SM_M_REQUEST_PDP_CONTEXT_ACTIVATION in S0
|
| Parameters  : context          - Context data
|               data             - T_REQUEST_PDP_CONTEXT_ACTIVATION *
+------------------------------------------------------------------------------
*/
static void handle_request_pdp_context_activation_in_S0(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_REQUEST_PDP_CONTEXT_ACTIVATION *msg = (T_REQUEST_PDP_CONTEXT_ACTIVATION *)data;

  (void)TRACE_FUNCTION("handle_request_pdp_context_activation_in_S0");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  context->pdp_type         = msg->address.pdp_type_no;

  sm_nw_store_negotiated_address(context, &msg->address, (U8)TRUE);

  if (msg->v_apn != (U8)FALSE)
  {
    sm_nw_allocate_and_copy_apn(context, msg->apn.c_apn_value, msg->apn.apn_value);
  } else {
    context->apn            = NULL;
  }

  /* Inform Context Control of activation request */
  sm_context_control(context, SM_I_NETWORK_REQUEST_ACTIVATION, msg);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_request_pdp_context_activation_in_S1
+------------------------------------------------------------------------------
| Description : Handle event SM_M_REQUEST_PDP_CONTEXT_ACTIVATION in S1
|
| Parameters  : context          - Context data
|               data             - T_REQUEST_PDP_CONTEXT_ACTIVATION *
+------------------------------------------------------------------------------
*/
static void handle_request_pdp_context_activation_in_S1(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_REQUEST_PDP_CONTEXT_ACTIVATION *msg = (T_REQUEST_PDP_CONTEXT_ACTIVATION *)data;
  (void)TRACE_FUNCTION("handle_request_pdp_context_activation_in_S1");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /*lint !e613 (Warning -- Possible use of null pointer) */
  if (sm_nw_is_address_and_apn_equal(context, &context->requested_address,
                                     &msg->address, msg->v_apn, &msg->apn))
  {
    /* Do nothing */
  } else {
    /* Reject incoming context activation */
    sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_INSUFFICIENT_RESOURCES);

    send_msg_request_pdp_context_activation_reject(context,
                                                   sm_get_nw_cause(context));
  } /* if */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_request_pdp_context_activation_in_S4
+------------------------------------------------------------------------------
| Description : Handle event SM_M_REQUEST_PDP_CONTEXT_ACTIVATION in S4
|
| Parameters  : context          - Context data
|               data             - T_REQUEST_PDP_CONTEXT_ACTIVATION *
+------------------------------------------------------------------------------
*/
static void handle_request_pdp_context_activation_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_REQUEST_PDP_CONTEXT_ACTIVATION *msg = (T_REQUEST_PDP_CONTEXT_ACTIVATION *)data;
  (void)TRACE_FUNCTION("handle_request_pdp_context_activation_in_S4");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  if (sm_nw_is_address_and_apn_equal(context, &context->negotiated_address,
                                     &msg->address, msg->v_apn, &msg->apn))
  {
    /* Go to state SM NETWORK ACTIVATING PRIMARY */
    context->network_control_state = SM_NETWORK_ACTIVATING_PRIMARY;

    /* Inform Context Control of the activation override
     * NOTE!  Normally other state machines are informed last, but in this
     * case we need to update sm_data.sm_context_activation_status _before_
     * sending ACTIVATE PDP CONTEXT REQUEST through MM. */
    sm_context_control(context, SM_I_NETWORK_REQUEST_ACTIVATION_OVERRIDE, NULL);

    /* Context activation override - start context activation procedure */
    sm_timer_start(context, SM_TIMER_T3380);

    /* This is akin to a context reactivation: Use currently negotiated IP address */
    sm_nw_copy_negotiated_address_to_requested(context);

    send_msg_activate_pdp_context_request(context);
  } else {
    /* Reject incoming context activation */
    sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_INSUFFICIENT_RESOURCES);
    send_msg_request_pdp_context_activation_reject(context, sm_get_nw_cause(context));
  } /* if */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_request_in_S3
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REQUEST in S3
|
| Parameters  : context          - Context data
|               data             - T_MODIFY_PDP_CONTEXT_REQUEST * (unused)
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_request_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_modify_pdp_context_request_in_S3");

  /* Free coded message */
  sm_free_coded_msg(context);

  /* Stop T3381, start T3390, and send DEACTIVATE PDP CONTEXT REQUEST message */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm,
                  (U16)CAUSE_NWSM_MSG_INCOMPATIBLE_WITH_STATE);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Inform Context Control of the failed activation (with network deactivation) */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm,
                   (U16)CAUSE_NWSM_MSG_INCOMPATIBLE_WITH_STATE);
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_request_in_S4
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REQUEST in S4
|
| Parameters  : context          - Context data
|               data             - T_D_MODIFY_PDP_CONTEXT_REQUEST *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_request_in_S4(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_D_MODIFY_PDP_CONTEXT_REQUEST *msg = (T_D_MODIFY_PDP_CONTEXT_REQUEST *)data;
  T_SM_UPDATE_FLAGS      update_flags;

  (void)TRACE_FUNCTION("handle_modify_pdp_context_request_in_S4");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  if (!sm_is_llc_sapi_valid(msg->llc_sapi.sapi, context->ti))
  {
    return;
  }

  if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
  {
    /* QoS >= minimum QoS: Store negotiated parameters */
    update_flags = sm_nw_store_mt_modify_parameters(context, msg);

    /* Go to state SM NETWORK ACTIVATED */
    context->network_control_state = SM_NETWORK_ACTIVATED;

    /* Reply to network: MODIFY PDP CONTEXT ACCEPT */
    send_msg_modify_pdp_context_accept(context);

    /* Report successful NW initiated context modification */
    sm_context_control(context, SM_I_NETWORK_REQUEST_MODIFY,
                       (void *)update_flags);
  } else {
    /* Minimum QoS not satisfied - go to state SM NETWORK DEACTIVATING */
    context->network_control_state = SM_NETWORK_DEACTIVATING;

    /* Start deactivation, T3390 */
    sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

    /* Report failed activation to Context Control */
    sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_context_control(context, SM_I_NETWORK_REQUEST_MODIFY_FAILED, NULL);
  } /* if (sm_qos_is_minimum_satisfied_by_aim()) */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_request_in_S5
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REQUEST in S5
|
| Parameters  : context          - Context data
|               data             - T_D_MODIFY_PDP_CONTEXT_REQUEST *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_request_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_D_MODIFY_PDP_CONTEXT_REQUEST *msg = (T_D_MODIFY_PDP_CONTEXT_REQUEST *)data;
  T_SM_UPDATE_FLAGS      update_flags;

  (void)TRACE_FUNCTION("handle_modify_pdp_context_request_in_S5");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free coded message */
  sm_free_coded_msg(context);

  /* Reject currently active UE initiated modification */
  sm_set_aci_cause(context, CAUSE_is_from_sm, (U16)CAUSE_SM_MODIFY_COLLISION);
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)FALSE);

  if (!sm_is_llc_sapi_valid(msg->llc_sapi.sapi, context->ti))
  {
    return;
  }

  if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
  {
    /* QoS >= minimum QoS: Store negotiated parameters */
    update_flags = sm_nw_store_mt_modify_parameters(context, msg);

    /* Go to state SM NETWORK ACTIVATED */
    context->network_control_state = SM_NETWORK_ACTIVATED;

    /* Reply to network: MODIFY PDP CONTEXT ACCEPT */
    send_msg_modify_pdp_context_accept(context);

    /* Report successful NW initiated context modification */
    sm_context_control(context, SM_I_NETWORK_REQUEST_MODIFY,
                       (void *)update_flags);
  } else {
    /* Minimum QoS not satisfied - go to state SM NETWORK DEACTIVATING */
    context->network_control_state = SM_NETWORK_DEACTIVATING;

    /* Start deactivation, T3390 */
    sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

    /* Report failed activation to Context Control */
    sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
    sm_context_control(context, SM_I_NETWORK_REQUEST_MODIFY_FAILED, NULL);
  } /* if (sm_qos_is_minimum_satisfied_by_aim()) */
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_request_in_S6
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REQUEST in S6
|
| Parameters  : context          - Context data
|               data             - T_MODIFY_PDP_CONTEXT_REQUEST * (unused)
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_request_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_modify_pdp_context_request_in_S6");

  /* Free coded message */
  sm_free_coded_msg(context);

  /* Reject currently active UE initiated modification */
  sm_set_aci_cause(context, CAUSE_is_from_sm, (U16)CAUSE_SM_MODIFY_COLLISION);
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)FALSE);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Stop T3381, start T3390, and send DEACTIVATE PDP CONTEXT REQUEST message */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm,
                  (U16)CAUSE_NWSM_MSG_INCOMPATIBLE_WITH_STATE);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed modification */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm,
                   (U16)CAUSE_NWSM_MSG_INCOMPATIBLE_WITH_STATE);
  sm_context_control(context, SM_I_NETWORK_REQUEST_MODIFY_FAILED, NULL);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_accept_in_S3
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_ACCEPT in S3
|
| Parameters  : context          - Context data
|               data             - T_D_MODIFY_PDP_CONTEXT_ACCEPT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_accept_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_D_MODIFY_PDP_CONTEXT_ACCEPT *msg = (T_D_MODIFY_PDP_CONTEXT_ACCEPT *)data;
  T_SM_UPDATE_FLAGS     update_flags;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_accept_in_S3");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3381 */
  sm_timer_stop(context);

  /* Store GSM RAT parameters, if present */
  update_flags = sm_nw_store_modify_accept_parameters(context, msg);

  if (msg->v_qos != (U8)FALSE)
  {
    update_flags       |= SM_UPDATE_QOS;
    /* We requested no new QoS, but received one nontheless. */
    if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
    {
      /* QoS >= minimum QoS: Store negotiated parameters */
      sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);
    } else {
      /* Minimum QoS no longer satisfied: Abort activation */
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

      context->network_control_state = SM_NETWORK_DEACTIVATING;

      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      /* Report failed activation to Context Control (with network deactivation) */
      sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
      return;
    } /* if (sm_qos_is_minimum_satisfied_by_aim) */
  }

  if (sm_tft_more_to_modify(context))
  {
    /* Start T3381 */
    sm_timer_start(context, SM_TIMER_T3381);
    /* Send MODIFY PDP CONTEXT REQUEST with remaining TFTs */
    send_msg_modify_pdp_context_request(context);
  } else {
    /* No more TFTs to add: go to state SM NETWORK ACTIVATED, and inform Context Control */
    context->network_control_state = SM_NETWORK_ACTIVATED;

    sm_context_control(context, SM_I_NETWORK_ACTIVATE_COMPLETED,
                       (void *)update_flags);
  }
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_accept_in_S5
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_ACCEPT in S5
|
| Parameters  : context          - Context data
|               data             - T_D_MODIFY_PDP_CONTEXT_ACCEPT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_accept_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_D_MODIFY_PDP_CONTEXT_ACCEPT *msg = (T_D_MODIFY_PDP_CONTEXT_ACCEPT *)data;
  T_SM_UPDATE_FLAGS     update_flags = (T_SM_UPDATE_FLAGS)0;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_accept_in_S5");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3381 */
  sm_timer_stop(context);

  /* Store GSM RAT parameters, if present */
  update_flags = sm_nw_store_modify_accept_parameters(context, msg);

  if (msg->v_qos != (U8)FALSE)
  {
    /* QoS updated */
    if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
    {
      /* QoS >= minimum QoS: Store negotiated parameters */
      sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);
      update_flags     |= SM_UPDATE_QOS;
    } else {
      /* Minimum QoS no longer satisfied: Deactivate */
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

      context->network_control_state = SM_NETWORK_DEACTIVATING;

      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)FALSE);
      return;
    } /* if (sm_qos_is_minimum_satisfied_by_aim) */
  } else {
    /* Check that minimum QoS is still satisfied by current QoS */
    if (!sm_qos_is_minimum_satisfied_by_sm(context, &context->accepted_qos))
    {
      /* Minimum QoS no longer satisfied: Deactivate */
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

      context->network_control_state = SM_NETWORK_DEACTIVATING;

      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)TRUE);

      return;
    }
  }

  if (sm_tft_more_to_modify(context))
  {
    /* Start T3381 */
    sm_timer_start(context, SM_TIMER_T3381);
    /* Send MODIFY PDP CONTEXT REQUEST with more TFTs */
    send_msg_modify_pdp_context_request(context);

    context->network_control_state = SM_NETWORK_MODIFYING_ADDITIONAL_TFTS;
  } else {
    /* No more TFTs to add: Modification completed. */
    /* Go to state SM NETWORK ACTIVATED, and inform Context Control */
    context->network_control_state = SM_NETWORK_ACTIVATED;

    sm_context_control(context, SM_I_NETWORK_MODIFY_COMPLETED,
                       (void *)update_flags);
  }
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_accept_in_S6
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_ACCEPT in S6
|
| Parameters  : context          - Context data
|               data             - T_D_MODIFY_PDP_CONTEXT_ACCEPT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_accept_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_D_MODIFY_PDP_CONTEXT_ACCEPT *msg = (T_D_MODIFY_PDP_CONTEXT_ACCEPT *)data;
  T_SM_UPDATE_FLAGS     update_flags = (T_SM_UPDATE_FLAGS)0;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_accept_in_S6");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop timer T3381 */
  sm_timer_stop(context);

  /* Store GSM RAT parameters, if present */
  update_flags = sm_nw_store_modify_accept_parameters(context, msg);

  if (msg->v_qos != (U8)FALSE)
  {
    /* We requested no new QoS, but received one nontheless. */
    if (sm_qos_is_minimum_satisfied_by_aim(context, &msg->qos))
    {
      /* QoS >= minimum QoS: Store negotiated parameters */
      sm_qos_assign_from_aim(&context->accepted_qos, &msg->qos);
      update_flags     |= SM_UPDATE_QOS;
    } else {
      /* Minimum QoS no longer satisfied: Deactivate */
      sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

      context->network_control_state = SM_NETWORK_DEACTIVATING;

      sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_QOS_NOT_ACCEPTED);
      sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)TRUE);

      return;
    } /* if (sm_qos_is_minimum_satisfied_by_aim) */
  }

  if (sm_tft_more_to_modify(context))
  {
    /* Start T3381 */
    sm_timer_start(context, SM_TIMER_T3381);
    /* Send MODIFY PDP CONTEXT REQUEST with remaining TFTs */
    send_msg_modify_pdp_context_request(context);
  } else {
    /* No more TFTs to add: Modification completed. */
    /* Go to state SM NETWORK ACTIVATED, and inform Context Control */
    context->network_control_state = SM_NETWORK_ACTIVATED;

    sm_context_control(context, SM_I_NETWORK_MODIFY_COMPLETED,
                       (void *)update_flags);
  }
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_reject_in_S3
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REJECT in S3
|
| Parameters  : context          - Context data
|               data             - T_MODIFY_PDP_CONTEXT_REJECT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_reject_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_MODIFY_PDP_CONTEXT_REJECT *msg = (T_MODIFY_PDP_CONTEXT_REJECT *)data;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_reject_in_S3");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Save cause value for ACI */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Stop T3381, start T3390, and send DEACTIVATE PDP CONTEXT REQUEST message */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed activation (with network deactivation) */
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_reject_in_S5
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REJECT in S5
|
| Parameters  : context          - Context data
|               data             - T_MODIFY_PDP_CONTEXT_REJECT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_reject_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_MODIFY_PDP_CONTEXT_REJECT *msg = (T_MODIFY_PDP_CONTEXT_REJECT *)data;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_reject_in_S5");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Save cause value for ACI */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Stop T3381, start T3390, and send DEACTIVATE PDP CONTEXT REQUEST message */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed modification */
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_modify_pdp_context_reject_in_S6
+------------------------------------------------------------------------------
| Description : Handle event SM_M_MODIFY_PDP_CONTEXT_REJECT in S6
|
| Parameters  : context          - Context data
|               data             - T_MODIFY_PDP_CONTEXT_REJECT *
+------------------------------------------------------------------------------
*/
static void handle_modify_pdp_context_reject_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_MODIFY_PDP_CONTEXT_REJECT *msg = (T_MODIFY_PDP_CONTEXT_REJECT *)data;
  (void)TRACE_FUNCTION("handle_modify_pdp_context_reject_in_S6");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Save cause value for ACI */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Stop T3381, start T3390, and send DEACTIVATE PDP CONTEXT REQUEST message */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed modification */
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_pdp_context_request_while_active
+------------------------------------------------------------------------------
| Description : Handle event SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST in S1 - S6
|
| Parameters  : context          - Context data
|               data             - T_DEACTIVATE_PDP_CONTEXT_REQUEST *
+------------------------------------------------------------------------------
*/
static void handle_deactivate_pdp_context_request_while_active(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  BOOL tear_down;
  T_DEACTIVATE_PDP_CONTEXT_REQUEST *msg = (T_DEACTIVATE_PDP_CONTEXT_REQUEST *)data;
  (void)TRACE_FUNCTION("handle_deactivate_pdp_context_request_while_active");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Stop any active timers */
  sm_timer_stop(context);

  /* Free stored coded message - if any */
  sm_free_coded_msg(context);

  if (msg->v_tear_down != (U8)FALSE && msg->tear_down.tear_down_flag == (U8)1)
  {
    tear_down = TRUE;
    /* Mark linked contexts as inactive */
    sm_nw_mark_nsapi_set_inactive(sm_linked_nsapis(context->ti));
  } else {
    tear_down = FALSE;
  };

  /* Mark context as inactive */
  sm_nw_mark_context_inactive(context->nsapi);

  /* Save cause for ACI */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Send DEACTIVATE PDP CONTEXT ACCEPT message */
  send_msg_deactivate_pdp_context_accept(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Report deactivation to Context Control */
  sm_context_control(context, SM_I_NETWORK_REQUEST_DEACTIVATE, (void *)tear_down);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_pdp_context_request_while_deactivating
+------------------------------------------------------------------------------
| Description : Handle event SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST in S7
|
| Parameters  : context          - Context data
|               data             - T_DEACTIVATE_PDP_CONTEXT_REQUEST *
+------------------------------------------------------------------------------
*/
static void handle_deactivate_pdp_context_request_while_deactivating(struct T_SM_CONTEXT_DATA *context, /*@null@*/ void *data)
{
  T_DEACTIVATE_PDP_CONTEXT_REQUEST *msg = (T_DEACTIVATE_PDP_CONTEXT_REQUEST *)data;
  (void)TRACE_FUNCTION("handle_deactivate_pdp_context_request_while_deactivating");

  TRACE_ASSERT(msg != NULL);

  if (msg EQ NULL)
    return;

  /* Save cause for ACI */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)msg->sm_cause.sm_cause_val);

  /* Send DEACTIVATE PDP CONTEXT ACCEPT message */
  send_msg_deactivate_pdp_context_accept(context);

  /* Report deactivation to Context Control iff tear_down == TRUE */
  if (msg->v_tear_down != (U8)FALSE && msg->tear_down.tear_down_flag == (U8)1)
  {
    sm_context_control(context, SM_I_NETWORK_REQUEST_DEACTIVATE, (void *)TRUE);
  }
}

/*
+------------------------------------------------------------------------------
| Function    : handle_deactivate_pdp_context_accept
+------------------------------------------------------------------------------
| Description : Handle event SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT in S7
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_deactivate_pdp_context_accept(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_deactivate_pdp_context_accept");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Stop T3390 */
  sm_timer_stop(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Mark context as inactive */
  sm_nw_mark_context_inactive(context->nsapi);

  /* Report deactivate complete to Context Control */
  sm_context_control(context, SM_I_NETWORK_DEACTIVATE_COMPLETED, NULL);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3380
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3380
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3380(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3380");

  /* If SM is not suspended, resend ACTIVATE (SECONDARY) PDP CONTEXT REQUEST */
  resend_msg(context);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3380_max
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3380_MAX
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3380_max(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3380_max");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Inform Context Control of the failed activation (no network deactivation) */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_NETWORK_FAILURE);
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)FALSE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3381
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3381
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3381(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3381");

  /* If SM is not suspended, resend MODIFY PDP CONTEXT REQUEST */
  resend_msg(context);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3381_max_in_S3
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3381_MAX in S3
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3381_max_in_S3(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3381_max_in_S3");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Initiate deactivation */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed activation */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_NETWORK_FAILURE);
  sm_context_control(context, SM_I_NETWORK_ACTIVATE_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3381_max_in_S5
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3381_MAX in S5
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3381_max_in_S5(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3381_max_in_S5");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Modify procedure has failed, but the context remains active. */
  /* Go to state SM NETWORK ACTIVATED */
  context->network_control_state = SM_NETWORK_ACTIVATED;

  /* Inform Context Control of the failed activation */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_NETWORK_FAILURE);
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)FALSE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3381_max_in_S6
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3381_MAX in S6
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3381_max_in_S6(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3381_max_in_S6");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATING */
  context->network_control_state = SM_NETWORK_DEACTIVATING;

  /* Initiate deactivation */
  sm_set_nw_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_REGULAR_DEACTIVATION);
  sm_nw_initiate_deactivation(context, sm_get_nw_cause(context));

  /* Inform Context Control of the failed activation */
  sm_set_aci_cause(context, CAUSE_is_from_nwsm, (U16)CAUSE_NWSM_NETWORK_FAILURE);
  sm_context_control(context, SM_I_NETWORK_MODIFY_REJECTED, (void *)TRUE);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3390
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3390
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3390(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3390");

  /* If SM is not suspended, resend DEACTIVATE PDP CONTEXT REQUEST */
  resend_msg(context);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_T3390_max
+------------------------------------------------------------------------------
| Description : Handle event SM_T_T3390_MAX
|
| Parameters  : context          - Context data
|               data             - Not used
+------------------------------------------------------------------------------
*/
static void handle_T3390_max(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/void *data)
{
  (void)TRACE_FUNCTION("handle_T3390_max");

  /* Free stored coded message */
  sm_free_coded_msg(context);

  /* Go to state SM NETWORK DEACTIVATED */
  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Context is considered deactivated.  Inform Context Control. */
  sm_context_control(context, SM_I_NETWORK_DEACTIVATE_COMPLETED, NULL);
}

/*
+------------------------------------------------------------------------------
| Function    : handle_mmpm_suspend_ind
+------------------------------------------------------------------------------
| Description : Handle incoming MMPM_SUSPEND_IND primitive
|
| Parameters  : context         - Context data
|               data            - Unused
+------------------------------------------------------------------------------
*/
static void handle_mmpm_suspend_ind(/*@unused@*/struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_mmpm_suspend_ind");
}

/*
+------------------------------------------------------------------------------
| Function    : handle_mmpm_resume_ind
+------------------------------------------------------------------------------
| Description : Handle incoming MMPM_RESUME_IND primitive
|
| Parameters  : context         - Context data
|               data            - Unused
+------------------------------------------------------------------------------
*/
static void handle_mmpm_resume_ind(struct T_SM_CONTEXT_DATA *context, /*@null@*/ /*@unused@*/ void *data)
{
  (void)TRACE_FUNCTION("handle_mmpm_resume_ind");

  if (sm_is_started_during_suspend(context))
  {
    resend_msg(context);
    sm_clear_started_during_suspend(context);
  }
}

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

/*
+------------------------------------------------------------------------------
| Function    : sm_network_control_init
+------------------------------------------------------------------------------
| Description : Network Control state machine initialization function

| Parameters  : context  - Context data
+------------------------------------------------------------------------------
*/
void sm_network_control_init(struct T_SM_CONTEXT_DATA *context)
{
  (void)TRACE_FUNCTION("sm_network_control_init");

  context->network_control_state = SM_NETWORK_DEACTIVATED;
}

/*
+------------------------------------------------------------------------------
| Function    : sm_network_control_exit
+------------------------------------------------------------------------------
| Description : Network Control state machine exit function

| Parameters  : context  - Context data
+------------------------------------------------------------------------------
*/
void sm_network_control_exit(struct T_SM_CONTEXT_DATA *context)
{
  (void)TRACE_FUNCTION("sm_network_control_exit");

  context->network_control_state = SM_NETWORK_DEACTIVATED;

  /* Free any memory allocated to this context (fields managed by Network Control) */
  sm_free_coded_msg(context);
  sm_nw_free_apn(context);
  sm_nw_free_requested_tft(context);
  sm_nw_free_active_tft(context);
  sm_nw_free_requested_pco(context);
  sm_nw_free_negotiated_pco(context);
}

/*
+------------------------------------------------------------------------------
| Function    : sm_network_control_state
+------------------------------------------------------------------------------
| Description : Returns a read-only string with the name of the active state.

| Parameters  : context  - Context data
+------------------------------------------------------------------------------
*/
#ifdef DEBUG
/*@observer@*/const char *
sm_network_control_state(struct T_SM_CONTEXT_DATA *context)
{
  /*@observer@*/
  static const char *state_name[SM_NETWORK_CONTROL_NUMBER_OF_STATES] = {
    "S0_SM_NETWORK_DEACTIVATED",
    "S1_SM_NETWORK_ACTIVATING_PRIMARY",
    "S2_SM_NETWORK_ACTIVATING_SECONDARY",
    "S3_SM_NETWORK_ACTIVATING_ADDING_TFTS",
    "S4_SM_NETWORK_ACTIVATED",
    "S5_SM_NETWORK_MODIFYING",
    "S6_SM_NETWORK_MODIFYING_ADDITIONAL_TFTS",
    "S7_SM_NETWORK_DEACTIVATING"
  };

  TRACE_ASSERT(context->network_control_state < SM_NETWORK_CONTROL_NUMBER_OF_STATES);

  return state_name[(U16)context->network_control_state];
}
#endif
/*
+------------------------------------------------------------------------------
| Function    : sm_network_control
+------------------------------------------------------------------------------
| Description : User Plane Control state machine
|
| Parameters  : context          - Context data
|               event            - Internal event (see sm_network_control.h)
|               data             - Event dependent parameter
+------------------------------------------------------------------------------
*/
void sm_network_control(struct T_SM_CONTEXT_DATA *context,
                        T_SM_NETWORK_CONTROL_EVENT event,
                        /*@null@*/ void *data)
{
#ifdef DEBUG
  const char *old_state_name, *new_state_name;
  T_SM_NETWORK_CONTROL_STATE old_state;
  /*@observer@*/
  static const char *event_name[SM_NETWORK_CONTROL_NUMBER_OF_EVENTS] = {
    "SM_M_ACTIVATE_PDP_CONTEXT_ACCEPT",
    "SM_M_ACTIVATE_PDP_CONTEXT_REJECT",
    "SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_ACCEPT",
    "SM_M_ACTIVATE_SECONDARY_PDP_CONTEXT_REJECT",
    "SM_M_DEACTIVATE_PDP_CONTEXT_REQUEST",
    "SM_M_DEACTIVATE_PDP_CONTEXT_ACCEPT",
    "SM_M_MODIFY_PDP_CONTEXT_REQUEST",
    "SM_M_MODIFY_PDP_CONTEXT_ACCEPT",
    "SM_M_MODIFY_PDP_CONTEXT_REJECT",
    "SM_M_REQUEST_PDP_CONTEXT_ACTIVATION",
    "SM_M_SM_STATUS",
    "SM_P_MMPM_RESUME_IND",
    "SM_P_MMPM_SUSPEND_IND",
    "SM_T_T3380",
    "SM_T_T3380_MAX",
    "SM_T_T3381",
    "SM_T_T3381_MAX",
    "SM_T_T3390",
    "SM_T_T3390_MAX",
    "SM_I_NETWORK_ACTIVATE_PRIMARY",
    "SM_I_NETWORK_ACTIVATE_SECONDARY",
    "SM_I_NETWORK_DEACTIVATE_LOCAL",
    "SM_I_NETWORK_MODIFY",
    "SM_I_NETWORK_REQUEST_ACTIVATION_REJECT",
    "SM_I_NETWORK_DEACTIVATE"
  };

  TRACE_ASSERT(event < SM_NETWORK_CONTROL_NUMBER_OF_EVENTS);

  old_state = context->network_control_state;
  old_state_name = sm_network_control_state(context);

  if (transition[(U16)old_state][(U16)event].event != event)
  {
    (void)TRACE_ERROR("Event table error in sm_network_control!");
  }
#endif /* DEBUG */

  transition[(U16)context->network_control_state][(U16)event].func(context, data);

#ifdef DEBUG
  new_state_name = sm_network_control_state(context);

  (void)TRACE_EVENT_P4("SM NETWORK #%d: %s => %s to %s", context->nsapi,
                       event_name[(U16)event], old_state_name, new_state_name);
#endif /* DEBUG */
}

/*==== END OF FILE ==========================================================*/