view src/g23m-fad/rlp/rlp_rcvs.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 90eb61ecd093
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  CSD (8411)
|  Modul   :  Rlp_rcvs.c
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This Modul defines the functions for processing
|             of incomming signals for the component
|             Radio Link Protocol of the base station
+----------------------------------------------------------------------------- 
*/ 

#ifndef RLP_RCVS_C
#define RLP_RCVS_C
#endif

#define ENTITY_RLP

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

#include <string.h>
#include "typedefs.h"
#include "vsi.h"
#include "macdef.h"
#include "custom.h"
#include "gsm.h"
#include "cus_rlp.h"
#include "prim.h"
#include "tok.h"
#include "rlp.h"

/*==== COnsT =======================================================*/

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

/*==== VAR EXPORT ==================================================*/

/*==== VAR LOCAL ===================================================*/

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

LOCAL void sig_rcv_ker_ui_ind(void)
{
  TRACE_FUNCTION ("sig_rcv_ker_ui_ind()");

  switch (GET_STATE (KER))
  {
    case RLP_ADM_AND_DETACHED:
      /*
       * processing for state RLP_ADM_AND_DETACHED
       */
      break; 

    default:
    {
#ifdef _TARGET_
      USHORT  sduSize = rlp_data->ker.FrameSize<<3;
#else
      USHORT  sduSize = (rlp_data->ker.FrameSize + 3)<<3;
#endif
      /*
       * processing for any other kernel state
       */
      PALLOC_SDU (rlp_ui_ind, RLP_UI_IND, sduSize);

      rlp_ui_ind->sdu.o_buf = 0;
      rlp_ui_ind->sdu.l_buf = sduSize;

      ker_copy_frame_to_sdu
      (
        rbm_get_current_frame (),
        &rlp_ui_ind->sdu
      );
      /*
       * clear the RLP header
       */
      memset (&rlp_ui_ind->sdu.buf[0], 0, HEADER_LEN); /*lint !e419 ( Apparent data overrun for function 'memset')*/
      
#ifdef _SIMULATION_ /* for test purpose clear the CRC trailer */
      memset (&rlp_ui_ind->sdu.buf[(sduSize>>3)-3], 0, 3); 
#endif
      
      PSENDX (L2R, rlp_ui_ind); 
      break;
    }
  }
}

/*
+------------------------------------------------------------------------------
|  Function    : sig_ker_rcv_rawdata_res
+------------------------------------------------------------------------------
|  Description : Process signal SIG_RAWDATA_RES received
|                from process kernel.
|
|
|  Parameters  : pduType -
|                cBit    -
|                pFBit   -
|                nr      -
|                ns      -
|                crc     -
|                 
|
|  Return      : -
+------------------------------------------------------------------------------
*/


GLOBAL void sig_ker_rcv_rawdata_res 
            (
              T_PDU_TYPE  pduType,
              T_BIT       cBit,
              T_BIT       pFBit,
              T_FRAME_NUM nr,
              T_FRAME_NUM ns,
              BOOL        crc
            )
{
  TRACE_FUNCTION ("sig_ker_rcv_rawdata_res()");

  if (GET_STATE(RCV) NEQ RPDU_WAIT_FOR_A_BLOCK OR crc EQ FALSE)
    return;
  
  switch (pduType)
  {
  case PDU_SABM:
    if (cBit NEQ 0 AND pFBit NEQ 0)
      sig_rcv_ker_sabm_ind ();
   break;

  case PDU_DISC:
    if (cBit NEQ 0)
      sig_rcv_ker_disc_ind (pFBit);
    break;

  case PDU_UA:
    if (cBit EQ 0)
      sig_rcv_ker_ua_ind (pFBit);
    break;

  case PDU_DM:
    if (cBit EQ 0)
      sig_rcv_ker_dm_ind (pFBit);
    break;

  case PDU_TEST:
    sig_rcv_ker_test_ind (cBit, pFBit);
    break;

  case PDU_XID:
    sig_rcv_ker_xid_ind (cBit, pFBit);
    break;

  case PDU_UI:
    sig_rcv_ker_ui_ind ();
    break;

  case PDU_RR_I:
    sig_rcv_ker_rr_i_ind (cBit, pFBit, nr, ns);
    break;

  case PDU_RNR_I:
    sig_rcv_ker_rnr_i_ind (cBit, pFBit, nr, ns);
    break;

  case PDU_SREJ_I:
    sig_rcv_ker_srej_i_ind (cBit, pFBit, nr, ns);
    break;

  case PDU_REJ_I:
    sig_rcv_ker_rej_i_ind (cBit, pFBit, nr, ns);
    break;

  case PDU_RR:
    sig_rcv_ker_rr_ind (cBit, pFBit, nr);
    break;

  case PDU_RNR:
    sig_rcv_ker_rnr_ind (cBit, pFBit, nr);
    break;

  case PDU_SREJ:
    sig_rcv_ker_srej_ind (cBit, pFBit, nr);
    break;

  case PDU_REJ:
    sig_rcv_ker_rej_ind (cBit, pFBit, nr);
    break;

  case PDU_REMAP:
    if (cBit EQ 0 AND pFBit EQ 0)
      sig_rcv_ker_remap_ind ();
    break;

  default: /* ignore block */
    break;
  }
}