view src/g23m-gprs/upm/upm_dispatcher.c @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 2cf312e56ee7
children
line wrap: on
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/*----------------------------------------------------------------------------
|  Project :  3G PS
|  Module  :  UPM
+-----------------------------------------------------------------------------
|             Copyright 2003 Texas Instruments.
|             All rights reserved. 
| 
|             This file is confidential and a trade secret of Texas 
|             Instruments .
|             The receipt of or possession of this file does not convey 
|             any rights to reproduce or disclose its contents or to 
|             manufacture, use, or sell anything it may describe, in 
|             whole, or in part, without the specific written consent of 
|             Texas Instruments. 
+-----------------------------------------------------------------------------
| Purpose:    This module implements the process dispatcher
|             for the User Plane Manager (UPM) entity.
|             For design details, see:
|             8010.939 UPM Detailed Specification
+---------------------------------------------------------------------------*/

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

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

#include "upm.h"
#include "upm_dispatcher.h"

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

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

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

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

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

/*
+------------------------------------------------------------------------------
| Function    : upm_disp_sm_activate_started_ind
+------------------------------------------------------------------------------
| Description : Dispatch SM_ACTIVATE_STARTED_IND
|
| Parameters  : sm_activate_started_ind   - received primitive
+------------------------------------------------------------------------------
*/
void upm_disp_sm_activate_started_ind(T_SM_ACTIVATE_STARTED_IND *prim)
{
  int                    nsapi;
  struct T_CONTEXT_DATA *ptr_context_data;

  (void)TRACE_FUNCTION("upm_disp_sm_activate_started_ind");

  nsapi            = (int)prim->nsapi;
  ptr_context_data = upm_get_context_data_from_nsapi(nsapi);

  /* UPM_DTI_REQ arrived first (or activation override).  Use present data structures. */
  if (ptr_context_data != NULL)
  {
#ifdef UPM_WITHOUT_USER_PLANE /*T_UPM_USER_PLANE_DATA is not visible for GPRS world*/
    memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA)
                 /* - sizeof(struct T_UPM_USER_PLANE_DATA)*/);
#else /*#ifndef UPM_WITHOUT_USER_PLANE*/
    memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA) 
                       - sizeof(struct T_UPM_USER_PLANE_DATA));
#endif /*#ifndef UPM_WITHOUT_USER_PLANE*/
    ptr_context_data->nsapi = (U8)nsapi;
  } else {
    MALLOC(ptr_context_data, (U32)sizeof(struct T_CONTEXT_DATA));

    if (ptr_context_data == NULL)
    {
      (void)TRACE_ERROR("Unable to allocate data structure for new context!");
      return;
    }

    memset(ptr_context_data, 0, sizeof(struct T_CONTEXT_DATA));

    upm_assign_context_data_to_nsapi(ptr_context_data, nsapi);
  }

  TRACE_ASSERT(ptr_context_data != NULL);

  upm_link_control_init(ptr_context_data);
#ifdef TI_UMTS
  upm_rab_control_init(ptr_context_data);
#endif /* TI_UMTS */
#ifdef TI_GPRS
  upm_sndcp_control_init(ptr_context_data);
#endif /* TI_GPRS */
#ifdef TI_DUAL_MODE
  upm_rat_control_init( (T_PS_rat)prim->rat );
#endif /* TI_DUAL_MODE */
  upm_link_control(ptr_context_data, UPM_P_SM_ACTIVATE_STARTED_IND, prim);
}

/*
+------------------------------------------------------------------------------
| Function    : upm_disp_sm_activate_ind
+------------------------------------------------------------------------------
| Description : Dispatch SM_ACTIVATE_IND
|
| Parameters  : sm_activate_ind            - received primitive
+------------------------------------------------------------------------------
*/
void upm_disp_sm_activate_ind(T_SM_ACTIVATE_IND *sm_activate_ind)
{
  struct T_CONTEXT_DATA *ptr_context_data;

  (void)TRACE_FUNCTION("upm_disp_sm_activate_ind");

  ptr_context_data = upm_get_context_data_from_nsapi(sm_activate_ind->nsapi);
  if (ptr_context_data != NULL)
  {
    upm_link_control(ptr_context_data, UPM_P_SM_ACTIVATE_IND, sm_activate_ind);
  } else {
    (void)TRACE_ERROR("Tried to complete activation of non-existent context!");
  }
}

/*
+------------------------------------------------------------------------------
| Function    : upm_disp_sm_modify_ind
+------------------------------------------------------------------------------
| Description : Dispatch SM_MODIFY_IND
|
| Parameters  : sm_modify_ind              - received primitive
+------------------------------------------------------------------------------
*/
void upm_disp_sm_modify_ind (T_SM_MODIFY_IND *sm_modify_ind)
{
  struct T_CONTEXT_DATA *ptr_context_data;

  (void)TRACE_FUNCTION("upm_disp_sm_modify_ind");

  ptr_context_data = upm_get_context_data_from_nsapi(sm_modify_ind->nsapi);
  if (ptr_context_data != NULL)
  {
    upm_link_control(ptr_context_data, UPM_P_SM_MODIFY_IND, sm_modify_ind);
  } else {
    (void)TRACE_ERROR("Tried to modify non-existent context!");
  }
}

/*
+------------------------------------------------------------------------------
| Function    : upm_disp_upm_count_req
+------------------------------------------------------------------------------
| Description : Dispatch UPM_COUNT_REQ
|
| Parameters  : prim                       - received primitive
+------------------------------------------------------------------------------
*/
void upm_disp_upm_count_req (T_UPM_COUNT_REQ *prim)
{
  struct T_CONTEXT_DATA *ptr_context_data;

  (void)TRACE_FUNCTION("upm_disp_upm_count_req");

  ptr_context_data = upm_get_context_data_from_nsapi(prim->nsapi);

  if (ptr_context_data != NULL) {
#ifdef TI_GPRS
#ifdef TI_DUAL_MODE
    if (upm_get_current_rat() == PS_RAT_GSM)
#endif /* TI_DUAL_MODE */
    {
      upm_sndcp_dispatch_upm_count_req(prim);
    }
#endif /* TI_GPRS */
#ifdef TI_DUAL_MODE
    else
#endif /* TI_DUAL_MODE */
#ifdef TI_UMTS
    {
      upm_dti_dispatch_upm_count_req(ptr_context_data, prim->reset);
    }
#endif
  } else {
    (void)TRACE_EVENT_P1("Warning: Received COUNT_REQ for undefined "
                         "NSAPI/context; ignored...", prim->nsapi);
  }
}

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