fc-magnetite: src/g23m-gprs/llc/llc

annotate src/g23m-gprs/llc/llc_rxf.c @ 597:f18b29e27be5

First attempt at MCSI voice path automatic switching The function is implemented at the ACI level in both aci2 and aci3, successfully avoids triggering the DSP bug on the first call, but the shutdown of MCSI upon call completion is not working properly yet in either version.

author	Mychaela Falconia <falcon@freecalypso.org>
date	Wed, 27 Mar 2019 22:18:35 +0000
parents	219afcfc6250
children

rev	line source
183 219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	2 +-----------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	3 \| Project :
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	4 \| Modul :
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	5 +-----------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	6 \| Copyright 2002 Texas Instruments Berlin, AG
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	7 \| All rights reserved.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	8 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	9 \| This file is confidential and a trade secret of Texas
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	10 \| Instruments Berlin, AG
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	11 \| The receipt of or possession of this file does not convey
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	12 \| any rights to reproduce or disclose its contents or to
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	13 \| manufacture, use, or sell anything it may describe, in
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	14 \| whole, or in part, without the specific written consent of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	15 \| Texas Instruments Berlin, AG.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	16 +-----------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	17 \| Purpose : This modul is part of the entity LLC and implements all
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	18 \| procedures and functions as described in the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	19 \| SDL-documentation (RX-statemachine)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	20 +-----------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	21 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	22
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	23 #ifndef LLC_RXF_C
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	24 #define LLC_RXF_C
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	25 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	26
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	27 #define ENTITY_LLC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	28
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	29 /==== INCLUDES =============================================================/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	30
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	31 #include <string.h> /* to get memcpy() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	32
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	33 #include "typedefs.h" /* to get Condat data types */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	34 #include "vsi.h" /* to get a lot of macros */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	35 #include "macdef.h"
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	36 #include "gprs.h"
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	37 #include "gsm.h" /* to get a lot of macros */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	38 #include "cnf_llc.h" /* to get cnf-definitions */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	39 #include "mon_llc.h" /* to get mon-definitions */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	40 #include "prim.h" /* to get the definitions of used SAP and directions */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	41 #include "llc.h" /* to get the global entity definitions */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	42
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	43 #include "llc_rxf.h" /* to get local defines */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	44 #include "llc_rxp.h" /* to get the function rx_cci_decipher_cnf */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	45 #include "llc_f.h" /* to get global functions, e.g. llc_generate_input */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	46 #ifndef TI_PS_OP_CIPH_DRIVER
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	47 #include "cci_fbsf.h" /* to get functional interface */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	48 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	49 /==== CONST ================================================================/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	50
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	51 /==== LOCAL VARS ===========================================================/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	52
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	53 /==== PRIVATE FUNCTIONS ====================================================/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	54 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	55
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	56 GLOBAL UBYTE rx_get_desc_octet (T_desc_list *desc_list,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	57 USHORT offset,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	58 UBYTE *data_ptr);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	59 #endif /* CF_FAST_EXEC */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	60
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	61 /==== PUBLIC FUNCTIONS =====================================================/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	62
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	63
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	64 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	65 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	66 \| Function : rx_init
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	67 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	68 \| Description : This procedure initialises all necessary variables of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	69 \| receive_pdu.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	70 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	71 \| Parameters :
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	72 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	73 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	74 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	75 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	76
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	77 GLOBAL void rx_init (void)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	78 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	79 TRACE_FUNCTION( "rx_init" );
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	80
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	81 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	82 * Initialise service RX with state TLLI_UNASSIGNED.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	83 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	84 INIT_STATE (RX, RX_TLLI_UNASSIGNED);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	85
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	86 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	87 } /* rx_init() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	88
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	89 #endif /* CF_FAST_EXEC */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	90
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	91
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	92 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	93 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	94 \| Function : rx_analyse_ctrl_field
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	95 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	96 \| Description : This procedure analyses the received LLC frame control field
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	97 \| and sets frame_type according to the frame type (U, UI, I/S).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	98 \| protected_mode is set according to the protected mode of the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	99 \| frame (U and I/S always protected, UI depends on setting of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	100 \| PM bit). The type of protected_mode is the same as in
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	101 \| CCI_DECIPHER_REQ. ns is set to N(S) for I frames, N(U) for
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	102 \| UI frames, or an undefined value for S and U frames. ciphering
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	103 \| is set to TRUE if the frame is ciphered (U never, I/S always,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	104 \| UI depends on setting of E bit), otherwise to FALSE. frame_ok
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	105 \| indicates if the frame contains enough octets to contain a
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	106 \| known control field (i.e. all necessary information is
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	107 \| accessible, not the control field is complete!).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	108 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	109 \| Parameters : grlc_unitdata_ind - a valid pointer to a GRLC_UNITDATA_IND
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	110 \| primitive
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	111 \| frame_type - a valid pointer to a T_PDU_TYPE variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	112 \| protected_mode - a valid pointer to a UBYTE variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	113 \| sapi - a valid pointer to a UBYTE variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	114 \| ns - a valid pointer to a T_FRAME_NUM variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	115 \| ciphering - a valid pointer to a BOOL variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	116 \| header_size - a valid pointer to a USHORT variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	117 \| frame_ok - a valid pointer to a BOOL variable
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	118 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	119 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	120 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	121
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	122 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	123
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	124 GLOBAL void rx_analyse_ctrl_field (T_GRLC_UNITDATA_IND *grlc_unitdata_ind,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	125 T_PDU_TYPE *frame_type,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	126 UBYTE *protected_mode,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	127 UBYTE *sapi,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	128 T_FRAME_NUM *ns,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	129 BOOL *ciphering,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	130 USHORT *header_size,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	131 BOOL *frame_ok)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	132 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	133 UBYTE first_octet;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	134 UBYTE sec_octet;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	135 UBYTE command_octet;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	136 UBYTE sack_k_octet;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	137
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	138
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	139 TRACE_FUNCTION( "rx_analyse_ctrl_field" );
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	140
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	141 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	142 * Check if the frame contains enough octets to access the first octet of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	143 * the control field to find out the type of the frame.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	144 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	145 if (grlc_unitdata_ind->desc_list.list_len < CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	146 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	147 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	148 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	149 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	150
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	151 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	152 * Assume initially that the frame is ok.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	153 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	154 *frame_ok = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	155
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	156 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	157 * Set first_octet to the value of the first frame octet (offset 0), which
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	158 * is the address field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	159 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	160 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 0, &first_octet);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	161
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	162 *sapi = first_octet & 0x0F;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	163
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	164 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	165 * Set sec_octet to the value of the second frame octet (offset 1), which
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	166 * is the first octet of the control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	167 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	168 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 1, &sec_octet);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	169
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	170
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	171 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	172 * Determine frame_type, along with ns, protected_mode, and ciphering,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	173 * depending on the frame type.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	174 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	175 if ((sec_octet & I_FRAME_MASK) EQ I_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	176 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	177 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	178 * I frame, protected, ciphered, at least 4 octets required to access all
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	179 * requested information (1 Address, 3 Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	180 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	181 *frame_type = I_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	182 *protected_mode = CCI_PM_PROTECTED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	183 *ciphering = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	184
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	185 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	186 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	187 * I frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	188 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	189 if (grlc_unitdata_ind->desc_list.list_len < I_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	190 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	191 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	192 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	193 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	194
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	195 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	196 * Determine the header_size
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	197 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	198 *header_size = I_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	199
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	200 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	201 * Add bytes in case of SACK-Bitmap (add K+1). Therefore get at first
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	202 * the command octet (offset 3). In case of an SACK, get next the k
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	203 * octet (offset 4) and add the additional size.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	204 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	205 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 3, &command_octet);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	206
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	207 if ( (command_octet & 0x03) == I_FRAME_SACK )
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	208 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	209 header_size += 1; / k octet */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	210
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	211 if (grlc_unitdata_ind->desc_list.list_len < *header_size)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	212 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	213 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	214 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	215 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	216
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	217 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 4, &sack_k_octet);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	218
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	219 header_size += (sack_k_octet & 0x1F); / bitmap size */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	220
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	221 if (grlc_unitdata_ind->desc_list.list_len < *header_size)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	222 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	223 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	224 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	225 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	226 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	227
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	228 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	229 * Extract N(S) and store it in ns.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	230 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	231 *ns = (((T_FRAME_NUM)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	232 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 1, NULL)) & 0x1F) << 4;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	233 *ns \|= (((T_FRAME_NUM)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	234 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 2, NULL)) >> 4);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	235 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	236 else if ((sec_octet & S_FRAME_MASK) EQ S_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	237 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	238 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	239 * S frame, protected, not ciphered. No N(S) present, only N(R).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	240 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	241 *frame_type = S_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	242 *protected_mode = CCI_PM_PROTECTED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	243 *ciphering = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	244
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	245 *header_size = S_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	246
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	247 /* not necessary to add bytes in case of SACK - value is not used */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	248 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	249 else if ((sec_octet & UI_FRAME_MASK) EQ UI_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	250 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	251 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	252 * UI frame, at least 3 octets required to access all requested
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	253 * information (1 Address, 2 Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	254 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	255 *frame_type = UI_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	256
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	257 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	258 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	259 * UI frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	260 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	261 if (grlc_unitdata_ind->desc_list.list_len < UI_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	262 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	263 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	264 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	265 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	266
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	267 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	268 * Extract protected mode setting of frame (PM bit).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	269 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	270 if (rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 2, NULL) & 0x01)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	271 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	272 *protected_mode = CCI_PM_PROTECTED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	273 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	274 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	275 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	276 *protected_mode = CCI_PM_UNPROTECTED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	277 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	278
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	279 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	280 * Extract ciphering setting of frame (E bit).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	281 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	282 if (rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 2, NULL) & 0x02)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	283 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	284 *ciphering = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	285 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	286 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	287 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	288 *ciphering = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	289 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	290
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	291 *header_size = UI_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	292
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	293 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	294 * Extract N(U) and store it in ns.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	295 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	296 *ns = (((T_FRAME_NUM)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	297 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 1, NULL)) & 0x07) << 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	298 *ns \|= (((T_FRAME_NUM)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	299 rx_get_desc_octet (&grlc_unitdata_ind->desc_list, 2, NULL)) >> 2);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	300 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	301 else if ((sec_octet & U_FRAME_MASK) EQ U_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	302 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	303 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	304 * U frame, protected, not ciphered. No N(S) present.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	305 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	306 *frame_type = U_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	307 *protected_mode = CCI_PM_PROTECTED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	308 *ciphering = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	309
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	310 *header_size = U_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	311 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	312
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	313 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	314 } /* rx_analyse_ctrl_field() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	315
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	316 #endif /* CF_FAST_EXEC */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	317
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	318 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	319 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	320 \| Function : rx_decipher_req
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	321 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	322 \| Description : Handles the function rx_decipher_req. This functions sets the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	323 \| ciphering parameters and calls the deciphering driver function.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	324 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	325 \| Parameters :
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	326 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	327 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	328 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	329
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	330 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	331 GLOBAL void rx_decipher_req (T_CCI_DECIPHER_REQ *decipher_req)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	332 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	333 T_CIPH_init_cipher_req_parms init_cipher_req_parms;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	334 T_CIPH_cipher_req_parms cipher_req_parms;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	335 T_CIPH_in_data_list in_data_list;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	336 T_CIPH_out_data out_data;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	337 T_CIPH_ck ck;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	338 U16 i;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	339 U8 status;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	340 U16 cnt = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	341
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	342 TRACE_FUNCTION( "rx_decipher_req" );
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	343
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	344 #ifdef LLC_TRACE_CIPHERING
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	345 TRACE_EVENT("DOWNLINK CIPHERED DATA");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	346 llc_trace_desc_list(&decipher_req->desc_list);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	347 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	348
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	349 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	350 * Copy pointer to desc's from CIPHER_REQ to the in_data_list
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	351 * The in_data array in allocated dynamically in this func.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	352 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	353 llc_copy_dl_data_to_list(decipher_req, &in_data_list);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	354 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	355 * Set ciphering parameters
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	356 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	357 cipher_req_parms.gprs_parameters.pm = decipher_req->pm;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	358 cipher_req_parms.gprs_parameters.header_size = decipher_req->header_size;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	359 cipher_req_parms.gprs_parameters.ciphering_input =
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	360 decipher_req->ciphering_input;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	361 cipher_req_parms.gprs_parameters.threshold = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	362 init_cipher_req_parms.direction = CIPH_DOWNLINK_DIR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	363 init_cipher_req_parms.algo = decipher_req->ciphering_algorithm;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	364 init_cipher_req_parms.ptr_ck = & ck;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	365 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	366 * Copy ciphering key
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	367 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	368 for (i = 0; i < 8;i++) {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	369 init_cipher_req_parms.ptr_ck->ck_element[i] = decipher_req->kc.key[i];
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	370 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	371
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	372 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	373 /* Use GRLC_DATA_REQ instead of CCI_CIPHER_CNF to avoid PPASS in LLC*/
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	374 PALLOC_SDU (ll_unitdata_ind, LL_UNITDATA_IND,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	375 (USHORT)((decipher_req->desc_list.list_len*8) - FCS_SIZE_BITS));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	376
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	377 ll_unitdata_ind->sdu.o_buf = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	378 ll_unitdata_ind->sdu.l_buf = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	379 out_data.buf =
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	380 (U32)(&ll_unitdata_ind->sdu.buf[ll_unitdata_ind->sdu.o_buf >> 3]);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	381 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	382 * Initialize ciphering driver and decipher data
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	383 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	384 #ifdef TI_PS_OP_CIPH_DRIVER
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	385 ciph_init_cipher_req (&init_cipher_req_parms, NULL);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	386 ciph_cipher_req (&cipher_req_parms, &in_data_list, &out_data, &status);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	387 #else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	388 ciph_init_cipher_req_sim (&init_cipher_req_parms, NULL);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	389 ciph_cipher_req_sim (&cipher_req_parms, &in_data_list, &out_data, &status);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	390 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	391 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	392 * "Send" DECIPHER_CNF to LLC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	393 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	394 ll_unitdata_ind->sdu.l_buf = out_data.len * 8;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	395 ll_unitdata_ind->tlli = decipher_req->reference1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	396 ll_unitdata_ind->cipher = (UBYTE)decipher_req->reference2;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	397 if (status == CIPH_CIPH_PASS){
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	398 ll_unitdata_ind->sapi = CCI_FCS_PASSED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	399 } else {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	400 ll_unitdata_ind->sapi = CCI_FCS_FAILED;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	401 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	402
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	403 #ifdef LLC_TRACE_CIPHERING
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	404 TRACE_EVENT("DOWNLINK DECIPHERED DATA");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	405 llc_trace_sdu(&ll_unitdata_ind->sdu);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	406 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	407 rx_cci_decipher_cnf(ll_unitdata_ind);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	408 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	409 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	410 * Free in_data array from in_data_list allocated in llc_copy_dl_data_to_list
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	411 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	412 if(in_data_list.ptr_in_data != NULL){
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	413 MFREE(in_data_list.ptr_in_data);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	414 in_data_list.ptr_in_data = NULL;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	415 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	416 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	417 * Free descriptors from the deipher_req->desc_list
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	418 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	419 if (decipher_req != NULL)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	420 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	421 T_desc desc = (T_desc )decipher_req->desc_list.first;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	422 T_desc *next_desc;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	423 while (desc NEQ NULL){
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	424 next_desc = (T_desc *)desc->next;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	425 MFREE (desc);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	426 desc = next_desc;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	427 /* increase freed partitions counter */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	428 cnt++;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	429 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	430 MFREE(decipher_req);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	431 decipher_req = NULL;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	432 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	433 llc_data->fbs.cci_freed_partition +=cnt;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	434
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	435 /* trace number of freed partitions */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	436 if(llc_data->fbs.cci_info_trace){
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	437 TRACE_EVENT_P2("INFO CCI: freed partitions %ld, total=%ld",
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	438 cnt,llc_data->fbs.cci_freed_partition);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	439 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	440
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	441 } /* rx_decipher_req */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	442
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	443 #endif
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	444
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	445 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	446 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	447 \| Function : rx_send_decipher_req
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	448 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	449 \| Description : This procedure allocates the CCI_DECIPHER_REQ primitive, fills
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	450 \| in all necessary parameters and sends the primitive to CCI.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	451 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	452 \| Parameters : grlc_unitdata_ind - a valid pointer to a GRLC_UNITDATA_IND
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	453 \| primitive
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	454 \| frame_type - indicates (un)acknowledged operation mode
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	455 \| protected_mode - pm setting for CCI_DECIPHER_REQ
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	456 \| ns - N(S)/N(U) for deciphering, otherwise
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	457 \| undefined value
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	458 \| header_size - size of header bytes (not ciphered bytes)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	459 \| ciphering - indicates deciphering (TRUE/FALSE)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	460 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	461 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	462 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	463 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	464
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	465 GLOBAL void rx_send_decipher_req (T_GRLC_UNITDATA_IND *grlc_unitdata_ind,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	466 T_PDU_TYPE frame_type,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	467 UBYTE protected_mode,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	468 T_FRAME_NUM ns,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	469 USHORT header_size,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	470 BOOL ciphering)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	471 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	472 ULONG oc;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	473
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	474 TRACE_FUNCTION ("rx_send_decipher_req");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	475
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	476 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	477 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	478 * No need to PPASS GRLC_xDATA_IND, because desc_list contains a pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	479 * which can be simply copied.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	480 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	481 T_CCI_DECIPHER_REQ *cci_decipher_req;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	482 MALLOC(cci_decipher_req, sizeof(T_CCI_DECIPHER_REQ));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	483
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	484 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	485 * Requires rx_analyse_ctrl_field() to set a correct CCI value.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	486 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	487 cci_decipher_req->pm = protected_mode;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	488
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	489 if (ciphering EQ TRUE)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	490 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	491 cci_decipher_req->reference2 = LL_CIPHER_ON; /* re-use of reference is ok */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	492 cci_decipher_req->ciphering_algorithm = llc_data->ciphering_algorithm;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	493 memcpy (&cci_decipher_req->kc, &llc_data->kc, sizeof(T_kc));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	494
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	495 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	496 * Calculate the OC which is valid for this ns. This could be the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	497 * current OC or OC + 1 in case of an modulo overflow of ns
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	498 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	499 switch (frame_type)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	500 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	501 case I_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	502 case S_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	503 if (ns >= llc_data->sapi->vr)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	504 oc = llc_data->sapi->oc_i_rx;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	505 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	506 oc = llc_data->sapi->oc_i_rx + (MAX_SEQUENCE_NUMBER+1);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	507 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	508
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	509 default:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	510 if (ns >= llc_data->sapi->vur)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	511 oc = llc_data->sapi->oc_ui_rx;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	512 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	513 oc = llc_data->sapi->oc_ui_rx + (MAX_SEQUENCE_NUMBER+1);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	514 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	515 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	516
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	517 llc_generate_input (llc_data->current_sapi, frame_type, ns,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	518 &cci_decipher_req->ciphering_input, oc);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	519
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	520 cci_decipher_req->direction = CCI_DIRECTION_DOWNLINK;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	521 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	522 else /* ciphering EQ FALSE */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	523 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	524 cci_decipher_req->reference2 = LL_CIPHER_OFF;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	525 cci_decipher_req->ciphering_algorithm = CCI_CIPHER_NO_ALGORITHM;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	526 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	527
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	528 cci_decipher_req->header_size = header_size;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	529
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	530 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	531 * TLLI must be stored somewhere
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	532 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	533 cci_decipher_req->reference1 = grlc_unitdata_ind->tlli;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	534
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	535 cci_decipher_req->desc_list = grlc_unitdata_ind->desc_list;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	536
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	537 /* TRACE_EVENT ("CCI thread not available, using functional interface"); */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	538
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	539 rx_decipher_req(cci_decipher_req);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	540 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	541
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	542 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	543 } /* rx_send_decipher_req() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	544
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	545 #endif /* CF_FAST_EXEC */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	546
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	547 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	548 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	549 \| Function : rx_interpret_frame
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	550 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	551 \| Description : This procedure analyses the LLC header and checksum of the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	552 \| given frame (U, UI, or I) and sets sapi, pdu_type, command,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	553 \| cr_bit, pf_bit, nr, and ns accordingly. The FCS field is not
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	554 \| included in frame, it has already been stripped off. frame_ok
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	555 \| is set to TRUE if the frame fulfils the following requirements:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	556 \| known PDU type, valid length, valid PD bit, valid SAPI.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	557 \| frame_rej indicates a frame rejection condition if any bit of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	558 \| W4-W1 is set. If a frame is rejected, frame_rej_ctrl_length
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	559 \| indicates the length of the control field. If this length
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	560 \| could not be determined, frame_rej_ctrl_length is set to the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	561 \| number of control field octets of the frame.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	562 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	563 \| Parameters : frame - contains the frame to be analysed, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	564 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	565 \| sapi - will be set to the SAPI of the frame, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	566 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	567 \| pdu_type - will be set to the PDU type of the frame, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	568 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	569 \| command - will be set to the command (I/S, U) of the frame
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	570 \| (if available), must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	571 \| cr_bit - will be set to the C/R bit of the frame, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	572 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	573 \| pf_bit - will be set to the P/F bit of the frame (if
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	574 \| available), must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	575 \| nr - will be set to N(R) / N(U) of the frame (if
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	576 \| available), must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	577 \| ns - will be set to N(S) of the frame (if available),
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	578 \| must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	579 \| frame_ok - TRUE if the frame is ok, else FALSE, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	580 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	581 \| frame_rej - indicates a frame rejection condition, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	582 \| a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	583 \| frame_rej_ctrl_length - number of octets in the rejected
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	584 \| control field, must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	585 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	586 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	587 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	588
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	589 /*#if defined(CF_FAST_EXEC) \|\| defined(_SIMULATION_) \|\| \
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	590 !defined(REL99) \|\| defined(LL_2to1) */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	591
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	592 GLOBAL void rx_interpret_frame (T_sdu *frame,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	593 UBYTE *sapi,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	594 T_PDU_TYPE *pdu_type,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	595 T_COMMAND *command,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	596 T_BIT *cr_bit,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	597 T_BIT *pf_bit,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	598 T_FRAME_NUM *nr,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	599 T_FRAME_NUM *ns,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	600 BOOL *frame_ok,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	601 UBYTE *frame_rej,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	602 USHORT *frame_rej_ctrl_length,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	603 UBYTE cipher)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	604 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	605 USHORT min_length = 0; /* minimum required frame length */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	606 BOOL check_length; /* check/ignore length at the end */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	607
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	608 TRACE_FUNCTION( "rx_interpret_frame" );
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	609
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	610 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	611 * Preset variables with suspected success, control field length is not
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	612 * yet known, so assume complete frame length.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	613 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	614 *frame_ok = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	615 *frame_rej = FRAME_NOT_REJ;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	616 *frame_rej_ctrl_length = frame->l_buf/8 - 1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	617
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	618 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	619 * Frame length is selectively activated, depending on frame type, command,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	620 * etc. Ignore frame length per default.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	621 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	622 check_length = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	623
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	624
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	625 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	626 * Check if the frame contains enough octets to access the first octet of
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	627 * the control field to find out the type of the frame.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	628 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	629 if (frame->l_buf/8 < CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	630 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	631 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	632 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	633 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	634
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	635
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	636 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	637 * Check if PD bit is set to 0. If it is not, the frame is invalid.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	638 * <R.LLC.XCEPTION.A.001>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	639 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	640 if ((frame->buf[frame->o_buf/8] & 0x80) != 0x00)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	641 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	642 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	643 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	644 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	645
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	646
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	647 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	648 * Extract C/R bit.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	649 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	650 *cr_bit = (frame->buf[frame->o_buf/8] & 0x40) >> 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	651
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	652
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	653 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	654 * Extract SAPI and check if the frame contains a reserved SAPI.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	655 * <R.LLC.XCEPTION.A.001>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	656 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	657 *sapi = frame->buf[frame->o_buf/8] & 0x0F;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	658 switch (sapi) / !!!!! constants or function/macro to determine invalid sapis */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	659 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	660 case 0:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	661 case 2:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	662 case 4:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	663 case 6:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	664 case 8:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	665 case 10:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	666 case 12:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	667 case 13:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	668 case 14:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	669 case 15:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	670 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	671 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	672 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	673 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	674 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	675
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	676
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	677 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	678 * Determine the PDU type of the frame, along with the minimum length
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	679 * required for this PDU type to constitute a complete frame.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	680 * Additionally, extract available variables for each PDU type.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	681 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	682 if ((frame->buf[(frame->o_buf/8)+1] & I_FRAME_MASK) EQ I_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	683 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	684 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	685 * I frame, at least 5 octets (1 Address, 3 Control, 1(++)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	686 * Information, no FCS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	687 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	688 *pdu_type = I_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	689 min_length = I_FRAME_MIN_OCTETS_WITHOUT_FCS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	690 *frame_rej_ctrl_length = I_CTRL_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	691
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	692 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	693 * Extract A bit (stored in P/F bit)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	694 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	695 *pf_bit = (frame->buf[(frame->o_buf/8)+1] & 0x40) >> 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	696
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	697 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	698 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	699 * I frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	700 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	701 if (frame->l_buf/8 < I_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	702 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	703 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	704 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	705 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	706
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	707 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	708 * Extract N(S), N(R)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	709 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	710 *ns = (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+1] & 0x1F) << 4;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	711 *ns \|= (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+2] >> 4);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	712
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	713 *nr = (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+2] & 0x07) << 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	714 *nr \|= (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+3] >> 2);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	715
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	716 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	717 * Determine the command of the I frame (S1 & S2 bits)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	718 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	719 switch (frame->buf[(frame->o_buf/8)+3] & 0x03)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	720 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	721 case I_FRAME_RR:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	722 TRACE_4_PARA("I-RR s:%d len:%d nr:%d ns:%d", sapi, BYTELEN(frame->l_buf), nr, *ns);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	723 *command = I_RR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	724 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	725
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	726 case I_FRAME_ACK:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	727 TRACE_4_PARA("I-ACK s:%d len:%d nr:%d ns:%d", sapi, BYTELEN(frame->l_buf), nr, *ns);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	728 *command = I_ACK;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	729 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	730
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	731 case I_FRAME_RNR:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	732 TRACE_4_PARA("I-RNR s:%d len:%d nr:%d ns:%d", sapi, BYTELEN(frame->l_buf), nr, *ns);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	733 *command = I_RNR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	734 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	735
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	736 case I_FRAME_SACK:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	737 TRACE_4_PARA("I-SACK s:%d len:%d nr:%d ns:%d", sapi, BYTELEN(frame->l_buf), nr, *ns);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	738 *command = I_SACK;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	739
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	740 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	741 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	742 * I frame SACK control field. K is at octet I_CTRL_MIN_OCTETS + 1
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	743 * and there must be at least K+1 octets within the bitmap. Therefore
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	744 * the frame must contain a minimum of I_CTRL_MIN_OCTETS+2.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	745 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	746 if (frame->l_buf/8 < I_CTRL_MIN_OCTETS+2)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	747 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	748 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	749 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	750 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	751
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	752 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	753 * min_length is being modified to be more accurate for SACK frames,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	754 * according to the Bitmap Length Indicator K in
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	755 * frame->buf[(frame->o_buf/8)+4].
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	756 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	757 min_length += (frame->buf[(frame->o_buf/8)+4] & 0x1F) + 1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	758
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	759 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	760 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	761
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	762 default:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	763 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	764 * Frame rejection condition due to receipt of a command or
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	765 * response field that is undefined or not implemented (set
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	766 * W3 bit to 1).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	767 * <R.LLC.XCEPTION.A.002>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	768 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	769 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	770 *frame_rej = FRAME_REJ_W3;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	771 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	772 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	773 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	774 else if ((frame->buf[(frame->o_buf/8)+1] & S_FRAME_MASK) EQ S_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	775 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	776 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	777 * S frame, fixed 3 octets (1 Address, 2 Control, 0 Information, no FCS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	778 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	779 *pdu_type = S_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	780 min_length = S_FRAME_MIN_OCTETS_WITHOUT_FCS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	781 *frame_rej_ctrl_length = S_CTRL_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	782
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	783 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	784 * Extract A bit (stored in P/F bit)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	785 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	786 *pf_bit = (frame->buf[(frame->o_buf/8)+1] & 0x20) >> 5;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	787
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	788 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	789 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	790 * S frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	791 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	792 if (frame->l_buf/8 < S_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	793 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	794 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	795 *frame_rej = FRAME_REJ_W1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	796 *frame_rej_ctrl_length = frame->l_buf/8 - 1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	797 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	798 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	799
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	800 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	801 * Extract N(R)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	802 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	803 *nr = (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+1] & 0x07) << 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	804 *nr \|= (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+2] >> 2);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	805
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	806 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	807 * Determine the command of the S frame (S1 & S2 bits)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	808 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	809 switch (frame->buf[(frame->o_buf/8)+2] & 0x03)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	810 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	811 case I_FRAME_RR:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	812 TRACE_2_PARA("S-RR s:%d nr:%d", sapi, nr);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	813 *command = I_RR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	814 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	815 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	816
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	817 case I_FRAME_ACK:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	818 TRACE_2_PARA("S-ACK s:%d nr:%d", sapi, nr);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	819 *command = I_ACK;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	820 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	821 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	822
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	823 case I_FRAME_RNR:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	824 TRACE_2_PARA("S-RNR s:%d nr:%d", sapi, nr);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	825 *command = I_RNR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	826 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	827 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	828
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	829 case I_FRAME_SACK:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	830 TRACE_2_PARA("S-SACK s:%d nr:%d", sapi, nr);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	831 *command = I_SACK;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	832 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	833 * min_length is being modified to be more accurate for SACK frames.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	834 * The S frame SACK format adds a number of up to 32 octets to the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	835 * control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	836 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	837 min_length += S_FRAME_SACK_MIN_CTRL_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	838
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	839 check_length = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	840 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	841
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	842 default:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	843 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	844 * Frame rejection condition due to receipt of a command or
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	845 * response field that is undefined or not implemented (set
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	846 * W3 bit to 1).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	847 * <R.LLC.XCEPTION.A.002>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	848 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	849 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	850 *frame_rej = FRAME_REJ_W3;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	851 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	852 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	853 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	854 else if ((frame->buf[(frame->o_buf/8)+1] & UI_FRAME_MASK) EQ UI_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	855 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	856 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	857 * UI frame, at least 3 octets (1 Address, 2 Control, 0(++)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	858 * Information, no FCS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	859 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	860 *pdu_type = UI_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	861 min_length = UI_FRAME_MIN_OCTETS_WITHOUT_FCS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	862 *frame_rej_ctrl_length = UI_CTRL_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	863
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	864 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	865 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	866 * UI frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	867 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	868 if (frame->l_buf/8 < UI_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	869 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	870 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	871 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	872 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	873
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	874 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	875 * Extract N(U) (is stored in N(R))
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	876 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	877 *nr = (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+1] & 0x07) << 6;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	878 *nr \|= (T_FRAME_NUM)(frame->buf[(frame->o_buf/8)+2] >> 2);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	879
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	880 TRACE_4_PARA("UI s:%d len:%d nr:%d c:%d", sapi, BYTELEN(frame->l_buf), nr, cipher);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	881 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	882 else if ((frame->buf[(frame->o_buf/8)+1] & U_FRAME_MASK) EQ U_FRAME_ID)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	883 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	884 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	885 * U frame, at least 2 octets (1 Address, 1 Control, 0(++)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	886 * Information, no FCS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	887 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	888 *pdu_type = U_FRAME;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	889 min_length = U_FRAME_MIN_OCTETS_WITHOUT_FCS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	890 *frame_rej_ctrl_length = U_CTRL_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	891
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	892 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	893 * Extract P/F bit
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	894 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	895 *pf_bit = (frame->buf[(frame->o_buf/8)+1] & 0x10) >> 4;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	896
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	897 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	898 * Check if the frame contains enough octets to access the complete
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	899 * U frame control field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	900 * NOTE:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	901 * This check could be omitted, because the U frame control field size
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	902 * is only one octet.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	903 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	904 if (frame->l_buf/8 < U_CTRL_MIN_OCTETS)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	905 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	906 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	907 *frame_rej = FRAME_REJ_W1;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	908 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	909 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	910
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	911 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	912 * Determine the command of the U frame (M4, M3, M2, M1).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	913 * Adjust the minimum length of the frame, if possible.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	914 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	915 switch (frame->buf[(frame->o_buf/8)+1] & 0x0F)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	916 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	917 case U_FRAME_DM:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	918 TRACE_1_PARA("DM s:%d", *sapi);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	919 *command = U_DM;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	920 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	921 * No information field is permitted.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	922 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	923 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	924 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	925 case U_FRAME_DISC:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	926 TRACE_1_PARA("DISC s:%d", *sapi);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	927 *command = U_DISC;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	928 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	929 * No information field is permitted.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	930 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	931 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	932 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	933 case U_FRAME_UA:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	934 TRACE_2_PARA("UA s:%d len:%d", *sapi, BYTELEN(frame->l_buf));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	935 *command = U_UA;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	936 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	937 * No knowledge if an information field is permitted, because
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	938 * this is only the case when UA is the response to SABM.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	939 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	940 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	941 case U_FRAME_SABM:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	942 TRACE_2_PARA("SABM s:%d len:%d", *sapi, BYTELEN(frame->l_buf));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	943 *command = U_SABM;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	944 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	945 * An information field is permitted, containing XID
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	946 * parameters. Therefore the size of the information field
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	947 * is not (yet) known.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	948 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	949 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	950 case U_FRAME_FRMR:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	951 TRACE_1_PARA("FRMR s:%d", *sapi);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	952 *command = U_FRMR;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	953 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	954 * FRMR response contains an information field of 10 octets.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	955 * <R.LLC.XCEPTION.A.008>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	956 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	957 min_length += U_FRAME_FRMR_INFO_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	958 check_length = TRUE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	959 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	960 case U_FRAME_XID:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	961 if( *cr_bit == SGSN_COMMAND )
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	962 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	963 TRACE_2_PARA("XID REQ s:%d len:%d", *sapi, BYTELEN(frame->l_buf));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	964 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	965 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	966 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	967 TRACE_2_PARA("XID RSP s:%d len:%d", *sapi, BYTELEN(frame->l_buf));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	968 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	969 *command = U_XID;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	970 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	971 * An information field is required, containing XID
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	972 * parameters. Therefore the size of the information field
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	973 * is not (yet) known.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	974 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	975 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	976 default:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	977 TRACE_0_INFO("Not supported U frame received");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	978 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	979 * Frame rejection condition due to receipt of a command or
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	980 * response field that is undefined or not implemented (set
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	981 * W3 bit to 1).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	982 * <R.LLC.XCEPTION.A.002>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	983 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	984 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	985 *frame_rej = FRAME_REJ_W3;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	986 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	987 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	988 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	989
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	990
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	991 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	992 * Determine if it is requested to check the frame length exactly
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	993 * (check_length EQ TRUE), or just to check the minimum frame length
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	994 * (check_length EQ FALSE).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	995 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	996 if (check_length AND (frame->l_buf/8 NEQ min_length))
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	997 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	998 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	999 * Actual length of frame doesn't correspond with computed length.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1000 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1001 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1002
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1003 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1004 * Check if frame rejection condition occured: S or U frame with
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1005 * incorrect length (= W1 + W3 bits). frame_rej_ctrl_length has already
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1006 * been set above to the correct control field length.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1007 * <R.LLC.XCEPTION.A.002>, <R.LLC.XCEPTION.A.010>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1008 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1009 if ((pdu_type EQ S_FRAME) OR (pdu_type EQ U_FRAME))
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1010 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1011 *frame_rej = FRAME_REJ_W1 \| FRAME_REJ_W3;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1012 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1013 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1014 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1015 else if (frame->l_buf/8 < min_length)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1016 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1017 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1018 * Frame doesn't contain enough octets to include the address field,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1019 * control field, information field, and FCS field necessary to constitute
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1020 * a complete frame according to the PDU type.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1021 * <R.LLC.XCEPTION.A.001>
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1022 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1023 *frame_ok = FALSE;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1024 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1025 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1026
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1027 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1028 } /* rx_interpret_frame() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1029
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1030 /* #endif / / CF_FAST_EXEC \|\| _SIMULATION_ */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1031
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1032
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1033 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1034 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1035 \| Function : rx_strip_llc_header
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1036 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1037 \| Description : This procedure strips the LLC header field off of the sdu
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1038 \| so that the sdu contains only the remaining L3-PDU.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1039 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1040 \| Parameters : sdu - contains the SDU (frame), must be a valid pointer
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1041 \| pdu_type - contains the PDU type of the frame, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1042 \| a valid PDU type
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1043 \| command - contains the command (I/S, U) of the frame, must be
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1044 \| a valid command for the given PDU type
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1045 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1046 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1047 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1048
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1049 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1050
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1051 GLOBAL void rx_strip_llc_header (T_sdu *sdu,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1052 T_PDU_TYPE pdu_type,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1053 T_COMMAND command)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1054 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1055 UBYTE header_len = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1056
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1057
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1058 TRACE_FUNCTION ("rx_strip_llc_header");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1059
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1060 switch (pdu_type)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1061 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1062 case I_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1063 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1064 * I frame 4 octets. Leave SACK Bitmap in PDU, will be stripped later!
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1065 * (1 Address, 3Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1066 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1067 header_len = I_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1068 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1069 case S_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1070 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1071 * S frame 3 octets. Leave SACK Bitmap in PDU, will be stripped later!
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1072 * (1 Address, 2(+32 max) Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1073 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1074 header_len = S_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1075 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1076 case UI_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1077 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1078 * UI frame, 3 octets (1 Address, 2 Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1079 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1080 header_len = UI_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1081 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1082 case U_FRAME:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1083 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1084 * U frame, 2 octets (1 Address, 1 Control).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1085 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1086 header_len = U_CTRL_MIN_OCTETS;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1087 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1088 default:
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1089 TRACE_ERROR ("Unknown PDU type");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1090 break;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1091 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1092
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1093 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1094 * Adjust the beginning of the PDU using the determined header_len.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1095 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1096 sdu->o_buf += header_len * 8;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1097
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1098 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1099 * Adjust the length of the PDU by the size of the header field.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1100 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1101 sdu->l_buf -= header_len * 8;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1102
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1103 return;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1104 } /* rx_strip_llc_header() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1105
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1106 #endif /* CF_FAST_EXEC */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1107
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1108 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1109 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1110 \| Function : rx_get_desc_octet
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1111 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1112 \| Description : This procedure maps the given linear offset to a descriptor
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1113 \| list and returns the value of the octet at this offset. If
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1114 \| offset is too large for descriptor list, 0x00 is returned.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1115 \| Each descriptor in descriptor list is evaluated until the
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1116 \| requested offset is reached. The resulting octet value is
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1117 \| written to the referenced parameter data_ptr (if not set to
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1118 \| NULL), and is additionally returned.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1119 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1120 \| Parameters : desc_list - a valid pointer to a valid descriptor list
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1121 \| offset - linear octet offset, beginning with 0
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1122 \| data_ptr - a valid pointer to be set to the resulting octet
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1123 \| value, or NULL
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1124 \|
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1125 +------------------------------------------------------------------------------
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1126 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1127
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1128 #ifndef CF_FAST_EXEC
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1129
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1130 GLOBAL UBYTE rx_get_desc_octet (T_desc_list *desc_list,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1131 USHORT offset,
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1132 UBYTE *data_ptr)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1133 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1134 T_desc *desc;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1135 UBYTE desc_data; / local pointer to data octet */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1136
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1137 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1138 * Check if offset is contained in descriptor list. Return 0x00 if not.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1139 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1140 if (offset >= desc_list->list_len)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1141 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1142 TRACE_ERROR ("offset too large for descriptor list");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1143 return 0x00;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1144 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1145
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1146 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1147 * Search requested data with given linear offset in descriptor list.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1148 * Empty descriptors are skipped. Check for each descriptor if requested
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1149 * offset is in descriptor, until it is found.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1150 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1151 desc = (T_desc *)desc_list->first;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1152 desc_data = NULL;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1153 do
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1154 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1155 if (offset < desc->len)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1156 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1157 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1158 * Requested data is in current descriptor. Set desc_data to point to
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1159 * requested octet with remaining offset (has been decremented by
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1160 * already passed descriptor payload).
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1161 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1162 /lint -e662 Possible creation of out-of-bounds pointer /
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1163 desc_data = &(desc->buffer[offset]);
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1164 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1165 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1166 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1167 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1168 * Requested data is not in current descriptor. Remember data payload
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1169 * of current descriptor as already passed.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1170 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1171 offset -= desc->len;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1172 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1173
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1174 desc = (T_desc *)desc->next;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1175 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1176 while ((desc NEQ NULL) AND (desc_data EQ NULL));
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1177
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1178
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1179 if (desc_data EQ NULL)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1180 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1181 TRACE_ERROR ("descriptor list ended before offset found");
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1182
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1183 if (data_ptr NEQ NULL)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1184 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1185 *data_ptr = 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1186 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1187
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1188 return 0;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1189 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1190 else
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1191 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1192 /*
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1193 * Store value of found octet in data_ptr, if pointer is valid.
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1194 */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1195 if (data_ptr NEQ NULL)
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1196 {
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1197 /lint -e661 Possible access of out-of-bounds pointer /
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1198 data_ptr = desc_data;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1199 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1200
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1201 return *desc_data;
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1202 }
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1203 } /* rx_get_desc_octet() */
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1204
219afcfc6250 src/g23m-gprs: initial import from TCS3.2/LoCosto Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1205 #endif /* CF_FAST_EXEC */

FreeCalypso > hg > fc-magnetite

annotate src/g23m-gprs/llc/llc_rxf.c @ 597:f18b29e27be5