FreeCalypso > hg > fc-magnetite
view src/g23m-gprs/llc/llc_uitxf.c @ 192:3cc9ce466065
components/llc: recipe created
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 13 Oct 2016 23:03:42 +0000 |
parents | 219afcfc6250 |
children |
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/* +----------------------------------------------------------------------------- | Project : | Modul : +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This modul is part of the entity LLC and implements all | procedures and functions as described in the | SDL-documentation (UITX-statemachine) +----------------------------------------------------------------------------- */ #ifndef LLC_UITXF_C #define LLC_UITXF_C #endif #define ENTITY_LLC /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "macdef.h" #include "gprs.h" #include "gsm.h" /* to get a lot of macros */ #include "cnf_llc.h" /* to get cnf-definitions */ #include "mon_llc.h" /* to get mon-definitions */ #include "prim.h" /* to get the definitions of used SAP and directions */ #include "llc.h" /* to get the global entity definitions */ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : uitx_init +------------------------------------------------------------------------------ | Description : This procedure initialises all necessary variables of | ui_frames_tx for all SAPIs. | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void uitx_init (void) { TRACE_FUNCTION( "uitx_init" ); /* * Initialise every incarnation of UITX with state TLLI_UNASSIGNED_NOT_READY. */ SWITCH_SERVICE (llc, uitx, 0); INIT_STATE (UITX_0, UITX_TLLI_UNASSIGNED_NOT_READY); SWITCH_SERVICE (llc, uitx, 1); INIT_STATE (UITX_1, UITX_TLLI_UNASSIGNED_NOT_READY); SWITCH_SERVICE (llc, uitx, 2); INIT_STATE (UITX_2, UITX_TLLI_UNASSIGNED_NOT_READY); SWITCH_SERVICE (llc, uitx, 3); INIT_STATE (UITX_3, UITX_TLLI_UNASSIGNED_NOT_READY); SWITCH_SERVICE (llc, uitx, 4); INIT_STATE (UITX_4, UITX_TLLI_UNASSIGNED_NOT_READY); SWITCH_SERVICE (llc, uitx, 5); INIT_STATE (UITX_5, UITX_TLLI_UNASSIGNED_NOT_READY); return; } /* uitx_init() */ /* +------------------------------------------------------------------------------ | Function : uitx_init_sapi +------------------------------------------------------------------------------ | Description : This procedure initialises all necessary variables of | ui_frames_tx for the given SAPI. | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void uitx_init_sapi (void) { TRACE_FUNCTION( "uitx_init_sapi" ); /* * <R.LLC.TLLI_ASS.A.007>, <R.LLC.TLLI_ASS.A.008> */ llc_data->uitx->vu = 0; return; } /* uitx_init_sapi() */ /* +------------------------------------------------------------------------------ | Function : uitx_build_ui_header +------------------------------------------------------------------------------ | Description : This procedure inserts the address and control field of an UI | frame in the given sdu. sdu already contains the user data. | The variable cipher indicates the setting of the E bit. The | variable relclass contains the information if the frame shall | be transmitted in protected or unprotected mode, which is | needed in this function to set the PM bit properly. | | Parameters : sdu - a valid pointer to a T_sdu variable, must contain enough | spare octets at the beginning for the LLC header fields | (address + control field = 3 octets for UI frames) | cr_bit - C/R bit | sapi - a valid SAPI for unacknowledged operation | nu - N(U) | cipher - ciphering indicator (see LL SAP: LL-UNITDATA-REQ) | relclass - QoS reliability class (see LL SAP), must not be set | to LL_RELCLASS_SUB | +------------------------------------------------------------------------------ */ GLOBAL void uitx_build_ui_header ( #ifdef LL_DESC T_desc_list3* desc_list3, #else T_sdu *sdu, #endif T_BIT cr_bit, UBYTE sapi, T_FRAME_NUM nu, UBYTE cipher, UBYTE relclass ) { #ifdef LL_DESC T_desc3 *desc3 = (T_desc3*)(desc_list3->first); UBYTE *buf = (UBYTE*)(desc3->buffer); #endif TRACE_FUNCTION( "uitx_build_ui_header" ); #ifdef LL_DESC /* * set new offset (3 octets earlier) and new length of desc_list3 */ desc3->offset -= UI_CTRL_MIN_OCTETS; desc3->len += UI_CTRL_MIN_OCTETS; desc_list3->list_len += UI_CTRL_MIN_OCTETS; /* * insert address field (PD is always 0) */ buf[desc3->offset] = ((UBYTE)cr_bit << 6) | sapi; /* * insert 1st octet of control field * (UI code + 3 most significant bits of N(U)) */ buf[desc3->offset+1]= 0xC0 | (UBYTE)(nu >> 6); /* * insert 2nd octet of control field * (6 least significant bits of N(U) + E bit + PM bit) */ buf[desc3->offset+2]= (((UBYTE)nu & 0x3F) << 2); if (cipher == LL_CIPHER_ON) { buf[desc3->offset+2] |= 0x02; } /* * all reliability classes except LL_NO_REL request protected data */ if (relclass != LL_NO_REL) { buf[desc3->offset+2] |= 0x01; } return; #else /* * set new offset (3 octets earlier) and new length of sdu */ sdu->o_buf -= UI_CTRL_MIN_OCTETS * 8; sdu->l_buf += UI_CTRL_MIN_OCTETS * 8; /* * insert address field (PD is always 0) */ sdu->buf[sdu->o_buf/8] = ((UBYTE)cr_bit << 6) | sapi; /* * insert 1st octet of control field * (UI code + 3 most significant bits of N(U)) */ sdu->buf[(sdu->o_buf/8)+1] = 0xC0 | (UBYTE)(nu >> 6); /* * insert 2nd octet of control field * (6 least significant bits of N(U) + E bit + PM bit) */ sdu->buf[(sdu->o_buf/8)+2] = (((UBYTE)nu & 0x3F) << 2); if (cipher == LL_CIPHER_ON) { sdu->buf[(sdu->o_buf/8)+2] |= 0x02; } /* * all reliability classes except LL_NO_REL request protected data */ if (relclass != LL_NO_REL) { sdu->buf[(sdu->o_buf/8)+2] |= 0x01; } return; #endif /* LL_DESC */ } /* uitx_build_ui_header() */