FreeCalypso > hg > fc-tourmaline
view src/g23m-gprs/llc/llc_llmef.c @ 303:f76436d19a7a default tip
!GPRS config: fix long-standing AT+COPS chance hanging bug
There has been a long-standing bug in FreeCalypso going back years:
sometimes in the AT command bring-up sequence of an ACI-only MS,
the AT+COPS command would produce only a power scan followed by
cessation of protocol stack activity (only L1 ADC traces), instead
of the expected network search sequence. This behaviour was seen
in different FC firmware versions going back to Citrine, and seemed
to follow some law of chance, not reliably repeatable.
This bug has been tracked down and found to be specific to !GPRS
configuration, stemming from our TCS2/TCS3 hybrid and reconstruction
of !GPRS support that was bitrotten in TCS3.2/LoCosto version.
ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3
version and had to be pulled from TCS2 - but as it turns out,
there is a new field in the MMR_REG_REQ primitive that needs to be
set correctly, and that psa_mms.c module is the place where this
initialization needed to be added.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | fa8dc04885d8 |
children |
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/* +----------------------------------------------------------------------------- | Project : | Modul : +----------------------------------------------------------------------------- | 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 is part of the entity LLC and implements all | procedures and functions as described in the | SDL-documentation (LLME-statemachine) +----------------------------------------------------------------------------- */ #ifndef LLC_LLMEF_C #define LLC_LLMEF_C #endif #define ENTITY_LLC /*==== INCLUDES =============================================================*/ #include <string.h> /* to get memcpy() */ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "macdef.h" #include "gprs.h" #include "gsm.h" /* to get a lot of macros */ #include "cnf_llc.h" /* to get cnf-definitions */ #include "mon_llc.h" /* to get mon-definitions */ #include "prim.h" /* to get the definitions of used SAP and directions */ #include "llc.h" /* to get the global entity definitions */ #include "llc_par.h" /* to get the default values of the LLC paramters */ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : llme_init +------------------------------------------------------------------------------ | Description : This procedure initialises all necessary variables of llme for | all SAPIs. | Also global variables are initialised that relate not to a | specific service (e.g. tlli_new/tlli_old). | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void llme_init (void) { int n; TRACE_FUNCTION( "llme_init" ); /* * Initialise service LLME with state TLLI_UNASSIGNED. */ INIT_STATE (LLME, LLME_TLLI_UNASSIGNED); /* * Initialise global variables. */ llc_data->suspended = FALSE; llc_data->grlc_suspended = FALSE; #ifdef LL_2to1 llc_data->tlli_new = PS_TLLI_INVALID; llc_data->tlli_old = PS_TLLI_INVALID; #else llc_data->tlli_new = LL_TLLI_INVALID; llc_data->tlli_old = LL_TLLI_INVALID; #endif llc_data->ciphering_algorithm = LLGMM_CIPHER_NO_ALGORITHM; #ifdef LL_2to1 memset (&(llc_data->kc), 0, sizeof(T_LLGMM_llgmm_kc)); #else memset (&(llc_data->kc), 0, sizeof(T_llgmm_kc)); #endif /* init current values */ #ifdef REL99 llc_data->cur_pfi = LL_PFI_SIGNALING; #endif llc_data->cur_qos.delay = LL_DELAY_SUB; llc_data->cur_qos.relclass = LL_NO_REL; llc_data->cur_qos.peak = LL_PEAK_SUB; llc_data->cur_qos.preced = LL_PRECED_SUB; llc_data->cur_qos.mean = LL_MEAN_SUB; llc_data->cur_radio_prio = LL_RADIO_PRIO_1; /* * Initialise all the global SAPI data, which is * not related to only one service */ for (n=0; n < MAX_SAPI_INC; n++) { SWITCH_SERVICE (llc, sapi, n); llc_data->sapi->vur = 0; llc_data->sapi->va = 0; llc_data->sapi->vs = 0; llc_data->sapi->vr = 0; llc_data->sapi->oc_ui_tx = 0L; llc_data->sapi->oc_ui_rx = 0L; llc_data->sapi->oc_i_tx = 0L; llc_data->sapi->oc_i_rx = 0L; llc_data->sapi->pbit_outstanding = FALSE; } return; } /* llme_init() */ /* +------------------------------------------------------------------------------ | Function : llme_init_cipher +------------------------------------------------------------------------------ | Description : This procedure initialises the global LLC variables llc_kc | (ciphering key Kc) and llc_ciphering_algorithm (ciphering | algorithm). If ciphering_algorithm is LLGMM_CIPH_NA, the | parameters are ignored and the procedure doesn't change | anything. The procedures cipher_ll_pdu (service send_pdu) | and decipher_ll_pdu (service receive_pdu) use the global | variables for ciphering and deciphering. | | Parameters : kc - ciphering key | ciphering_algorithm - ciphering algorithm | +------------------------------------------------------------------------------ */ #ifdef LL_2to1 GLOBAL void llme_init_cipher (T_LLGMM_llgmm_kc kc, UBYTE ciphering_algorithm) #else GLOBAL void llme_init_cipher (T_llgmm_kc kc, UBYTE ciphering_algorithm) #endif { TRACE_FUNCTION( "llme_init_cipher" ); if (ciphering_algorithm != LLGMM_CIPHER_NA) { switch (ciphering_algorithm) { case LLGMM_CIPHER_NO_ALGORITHM: TRACE_0_INFO("No cipher algorithm used!"); break; case LLGMM_CIPHER_GPRS_A5_1: TRACE_0_INFO("Cipher algorithm GEA/1 used!"); break; case LLGMM_CIPHER_GPRS_A5_2: TRACE_0_INFO("Cipher algorithm GEA/2 used!"); break; default: TRACE_ERROR("Unknown Cipher algorithm used!"); break; } /* * Set IOV default values, if kc is changed to a different value */ #ifdef LL_2to1 if ( memcmp (&(llc_data->kc), &kc, sizeof(T_LLGMM_llgmm_kc)) ) #else if ( memcmp (&(llc_data->kc), &kc, sizeof(T_llgmm_kc)) ) #endif { TRACE_0_INFO( "kc changed" ); #ifdef LL_2to1 memcpy (&(llc_data->kc), &kc, sizeof(T_LLGMM_llgmm_kc)); #else memcpy (&(llc_data->kc), &kc, sizeof(T_llgmm_kc)); #endif /* * Apply the default value of IOV-UI in case no negotiation * is started by the SGSN. * <R.LLC.LLC_PAR.A.016> */ llc_data->iov_ui = LLC_IOV_UI_ALL_SAPIS; /* * Apply the default value of IOV-I in case no negotiation * is started by the SGSN. * <R.LLC.LLC_PAR.A.018> */ #ifdef LL_2to1 llc_data->iov_i_base[IMAP(PS_SAPI_3)] = LLC_IOV_I_SAPI_3; llc_data->iov_i_base[IMAP(PS_SAPI_5)] = LLC_IOV_I_SAPI_5; llc_data->iov_i_base[IMAP(PS_SAPI_9)] = LLC_IOV_I_SAPI_9; llc_data->iov_i_base[IMAP(PS_SAPI_11)] = LLC_IOV_I_SAPI_11; #else llc_data->iov_i_base[IMAP(LL_SAPI_3)] = LLC_IOV_I_SAPI_3; llc_data->iov_i_base[IMAP(LL_SAPI_5)] = LLC_IOV_I_SAPI_5; llc_data->iov_i_base[IMAP(LL_SAPI_9)] = LLC_IOV_I_SAPI_9; llc_data->iov_i_base[IMAP(LL_SAPI_11)] = LLC_IOV_I_SAPI_11; #endif } /* * Set new ciphering algorithm */ llc_data->ciphering_algorithm = ciphering_algorithm; } else { TRACE_0_INFO("Cipher algorithm not changed"); } return; } /* llme_init_cipher() */