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view src/g23m-gprs/sm/sm_context_control.h @ 516:1ed9de6c90bd

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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 219afcfc6250
children
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/*----------------------------------------------------------------------------
|  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:    User Plane Control state machine definitions in the SM entity.
|             For design details, see:
|             8010.908 SM Detailed Specification
+---------------------------------------------------------------------------*/

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

#ifndef SM_CONTEXT_CONTROL_H
#define SM_CONTEXT_CONTROL_H

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

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

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

typedef enum
{
  /* Incoming primitives */
  SM_P_SMREG_PDP_ACTIVATE_REQ,
  SM_P_SMREG_PDP_ACTIVATE_REJ_RES,
  SM_P_SMREG_PDP_ACTIVATE_SEC_REQ,
  SM_P_SMREG_PDP_MODIFY_REQ,
  /* Events from Sequencer */
  SM_I_CONTEXT_DEACTIVATE,
  SM_I_CONTEXT_LOCAL_DEACTIVATE,
  SM_I_CONTEXT_REACTIVATE,
  SM_I_CONTEXT_UPGRADE,
  SM_I_CONTEXT_USER_PLANE_ERROR,
  /* Events from Network Control */
  SM_I_NETWORK_ACTIVATE_COMPLETED,
  SM_I_NETWORK_ACTIVATE_REJECTED,
  SM_I_NETWORK_DEACTIVATE_COMPLETED,
  SM_I_NETWORK_MODIFY_REJECTED,
  SM_I_NETWORK_MODIFY_COMPLETED,
  SM_I_NETWORK_REQUEST_ACTIVATION,
  SM_I_NETWORK_REQUEST_ACTIVATION_OVERRIDE,
  SM_I_NETWORK_REQUEST_DEACTIVATE,
  SM_I_NETWORK_REQUEST_MODIFY,
  SM_I_NETWORK_REQUEST_MODIFY_FAILED,
  /* Events from User Plane Control */
  SM_I_USER_PLANE_ACTIVATED,
  SM_I_USER_PLANE_DEACTIVATED,
  SM_I_USER_PLANE_MODIFIED,
  /* Events from Context Deactivate Control */
  SM_I_DEACTIVATE_COMPLETED,
  /* Number of events */
  SM_CONTEXT_CONTROL_NUMBER_OF_EVENTS
} T_SM_CONTEXT_CONTROL_EVENT;

typedef enum
{
  SM_CONTEXT_DEACTIVATED,
  SM_CONTEXT_ACTIVATING_MT,
  SM_CONTEXT_ACTIVATING_NETWORK,
  SM_CONTEXT_ACTIVATING_USER_PLANE,
  SM_CONTEXT_ACTIVATE_FAILED_DEACTIVATING,
  SM_CONTEXT_ACTIVATED,
  SM_CONTEXT_ACTIVATION_OVERRIDE,
  SM_CONTEXT_MODIFYING_IN_NETWORK,
  SM_CONTEXT_MODIFYING_USER_PLANE,
  SM_CONTEXT_MODIFYING_USER_PLANE_MT,
  SM_CONTEXT_UPGRADING_IN_NETWORK,
  SM_CONTEXT_REACTIVATING_DEACTIVATING_USER_PLANE,
  SM_CONTEXT_REACTIVATING_IN_NETWORK,
  SM_CONTEXT_REACTIVATING_USER_PLANE,
  SM_CONTEXT_DEACTIVATING,
  SM_CONTEXT_DEACTIVATING_SEQUENCED,
  /* Number of states */
  SM_CONTEXT_CONTROL_NUMBER_OF_STATES
} T_SM_CONTEXT_CONTROL_STATE;

/*==== EXPORTS ==============================================================*/

extern void sm_context_control_init(struct T_SM_CONTEXT_DATA *context);
extern void sm_context_control_exit(struct T_SM_CONTEXT_DATA *context);
#ifdef DEBUG
extern /*@observer@*/
const char *sm_context_control_state(struct T_SM_CONTEXT_DATA *context);
#endif
extern void sm_context_control(struct T_SM_CONTEXT_DATA *context,
			       T_SM_CONTEXT_CONTROL_EVENT event,
			       /*@null@*/ void *data);

#endif /* SM_CONTEXT_CONTROL_H */
/*==== END OF FILE ==========================================================*/