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

annotate src/g23m-gprs/llc/llc_rxf.c @ 206:6aadfa0d10c4

UPM enabled in the GPF/GPRS config for the hybrid build

author	Mychaela Falconia <falcon@freecalypso.org>
date	Fri, 14 Oct 2016 06:54:58 +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 @ 206:6aadfa0d10c4