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Diffstat (limited to 'drivers/staging/vt6655/datarate.c')
| -rw-r--r-- | drivers/staging/vt6655/datarate.c | 410 |
1 files changed, 0 insertions, 410 deletions
diff --git a/drivers/staging/vt6655/datarate.c b/drivers/staging/vt6655/datarate.c deleted file mode 100644 index 52907a4fae9d..000000000000 --- a/drivers/staging/vt6655/datarate.c +++ /dev/null @@ -1,410 +0,0 @@ -/* - * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * File: datarate.c - * - * Purpose: Handles the auto fallback & data rates functions - * - * Author: Lyndon Chen - * - * Date: July 17, 2002 - * - * Functions: - * RATEvParseMaxRate - Parsing the highest basic & support rate in rate field of frame - * RATEvTxRateFallBack - Rate fallback Algorithm Implementaion - * RATEuSetIE- Set rate IE field. - * - * Revision History: - * - */ - -#include "ttype.h" -#include "tmacro.h" -#include "mac.h" -#include "80211mgr.h" -#include "bssdb.h" -#include "datarate.h" -#include "card.h" -#include "baseband.h" -#include "srom.h" - -/*--------------------- Static Definitions -------------------------*/ - -/*--------------------- Static Classes ----------------------------*/ - -extern unsigned short TxRate_iwconfig; /* 2008-5-8 <add> by chester */ -/*--------------------- Static Variables --------------------------*/ -static const unsigned char acbyIERate[MAX_RATE] = { -0x02, 0x04, 0x0B, 0x16, 0x0C, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C -}; - -#define AUTORATE_TXOK_CNT 0x0400 -#define AUTORATE_TXFAIL_CNT 0x0064 -#define AUTORATE_TIMEOUT 10 - -/*--------------------- Static Functions --------------------------*/ - -void s_vResetCounter( - PKnownNodeDB psNodeDBTable -); - -void -s_vResetCounter( - PKnownNodeDB psNodeDBTable -) -{ - unsigned char ii; - - /* clear statistic counter for auto_rate */ - for (ii = 0; ii <= MAX_RATE; ii++) { - psNodeDBTable->uTxOk[ii] = 0; - psNodeDBTable->uTxFail[ii] = 0; - } -} - -/*--------------------- Export Variables --------------------------*/ - -/*--------------------- Export Functions --------------------------*/ - -/*+ - * - * Description: - * Get RateIdx from the value in SuppRates IE or ExtSuppRates IE - * - * Parameters: - * In: - * unsigned char - Rate value in SuppRates IE or ExtSuppRates IE - * Out: - * none - * - * Return Value: RateIdx - * - -*/ -unsigned char -DATARATEbyGetRateIdx( - unsigned char byRate -) -{ - unsigned char ii; - - /* Erase basicRate flag. */ - byRate = byRate & 0x7F;/* 0111 1111 */ - - for (ii = 0; ii < MAX_RATE; ii++) { - if (acbyIERate[ii] == byRate) - return ii; - } - return 0; -} - -/*+ - * - * Routine Description: - * Rate fallback Algorithm Implementation - * - * Parameters: - * In: - * pDevice - Pointer to the adapter - * psNodeDBTable - Pointer to Node Data Base - * Out: - * none - * - * Return Value: none - * - -*/ -#define AUTORATE_TXCNT_THRESHOLD 20 -#define AUTORATE_INC_THRESHOLD 30 - -/*+ - * - * Description: - * Get RateIdx from the value in SuppRates IE or ExtSuppRates IE - * - * Parameters: - * In: - * unsigned char - Rate value in SuppRates IE or ExtSuppRates IE - * Out: - * none - * - * Return Value: RateIdx - * - -*/ -unsigned short -wGetRateIdx( - unsigned char byRate -) -{ - unsigned short ii; - - /* Erase basicRate flag. */ - byRate = byRate & 0x7F;/* 0111 1111 */ - - for (ii = 0; ii < MAX_RATE; ii++) { - if (acbyIERate[ii] == byRate) - return ii; - } - - return 0; -} - -/*+ - * - * Description: - * Parsing the highest basic & support rate in rate field of frame. - * - * Parameters: - * In: - * pDevice - Pointer to the adapter - * pItemRates - Pointer to Rate field defined in 802.11 spec. - * pItemExtRates - Pointer to Extended Rate field defined in 802.11 spec. - * Out: - * pwMaxBasicRate - Maximum Basic Rate - * pwMaxSuppRate - Maximum Supported Rate - * pbyTopCCKRate - Maximum Basic Rate in CCK mode - * pbyTopOFDMRate - Maximum Basic Rate in OFDM mode - * - * Return Value: none - * - -*/ -void -RATEvParseMaxRate( - void *pDeviceHandler, - PWLAN_IE_SUPP_RATES pItemRates, - PWLAN_IE_SUPP_RATES pItemExtRates, - bool bUpdateBasicRate, - unsigned short *pwMaxBasicRate, - unsigned short *pwMaxSuppRate, - unsigned short *pwSuppRate, - unsigned char *pbyTopCCKRate, - unsigned char *pbyTopOFDMRate -) -{ - struct vnt_private *pDevice = pDeviceHandler; - unsigned int ii; - unsigned char byHighSuppRate = 0; - unsigned char byRate = 0; - unsigned short wOldBasicRate = pDevice->wBasicRate; - unsigned int uRateLen; - - if (pItemRates == NULL) - return; - - *pwSuppRate = 0; - uRateLen = pItemRates->len; - - pr_debug("ParseMaxRate Len: %d\n", uRateLen); - if (pDevice->eCurrentPHYType != PHY_TYPE_11B) { - if (uRateLen > WLAN_RATES_MAXLEN) - uRateLen = WLAN_RATES_MAXLEN; - } else { - if (uRateLen > WLAN_RATES_MAXLEN_11B) - uRateLen = WLAN_RATES_MAXLEN_11B; - } - - for (ii = 0; ii < uRateLen; ii++) { - byRate = (unsigned char)(pItemRates->abyRates[ii]); - if (WLAN_MGMT_IS_BASICRATE(byRate) && bUpdateBasicRate) { - /* Add to basic rate set, update pDevice->byTopCCKBasicRate and pDevice->byTopOFDMBasicRate */ - CARDbAddBasicRate((void *)pDevice, wGetRateIdx(byRate)); - pr_debug("ParseMaxRate AddBasicRate: %d\n", - wGetRateIdx(byRate)); - } - byRate = (unsigned char)(pItemRates->abyRates[ii]&0x7F); - if (byHighSuppRate == 0) - byHighSuppRate = byRate; - if (byRate > byHighSuppRate) - byHighSuppRate = byRate; - *pwSuppRate |= (1<<wGetRateIdx(byRate)); - } - if ((pItemExtRates != NULL) && (pItemExtRates->byElementID == WLAN_EID_EXTSUPP_RATES) && - (pDevice->eCurrentPHYType != PHY_TYPE_11B)) { - unsigned int uExtRateLen = pItemExtRates->len; - - if (uExtRateLen > WLAN_RATES_MAXLEN) - uExtRateLen = WLAN_RATES_MAXLEN; - - for (ii = 0; ii < uExtRateLen; ii++) { - byRate = (unsigned char)(pItemExtRates->abyRates[ii]); - /* select highest basic rate */ - if (WLAN_MGMT_IS_BASICRATE(pItemExtRates->abyRates[ii])) { - /* Add to basic rate set, update pDevice->byTopCCKBasicRate and pDevice->byTopOFDMBasicRate */ - CARDbAddBasicRate((void *)pDevice, wGetRateIdx(byRate)); - pr_debug("ParseMaxRate AddBasicRate: %d\n", - wGetRateIdx(byRate)); - } - byRate = (unsigned char)(pItemExtRates->abyRates[ii]&0x7F); - if (byHighSuppRate == 0) - byHighSuppRate = byRate; - if (byRate > byHighSuppRate) - byHighSuppRate = byRate; - *pwSuppRate |= (1<<wGetRateIdx(byRate)); - } - } - - if ((pDevice->byPacketType == PK_TYPE_11GB) && CARDbIsOFDMinBasicRate((void *)pDevice)) - pDevice->byPacketType = PK_TYPE_11GA; - - *pbyTopCCKRate = pDevice->byTopCCKBasicRate; - *pbyTopOFDMRate = pDevice->byTopOFDMBasicRate; - *pwMaxSuppRate = wGetRateIdx(byHighSuppRate); - if ((pDevice->byPacketType == PK_TYPE_11B) || (pDevice->byPacketType == PK_TYPE_11GB)) - *pwMaxBasicRate = pDevice->byTopCCKBasicRate; - else - *pwMaxBasicRate = pDevice->byTopOFDMBasicRate; - if (wOldBasicRate != pDevice->wBasicRate) - CARDvSetRSPINF((void *)pDevice, pDevice->eCurrentPHYType); - - pr_debug("Exit ParseMaxRate\n"); -} - -/*+ - * - * Routine Description: - * Rate fallback Algorithm Implementaion - * - * Parameters: - * In: - * pDevice - Pointer to the adapter - * psNodeDBTable - Pointer to Node Data Base - * Out: - * none - * - * Return Value: none - * - -*/ -#define AUTORATE_TXCNT_THRESHOLD 20 -#define AUTORATE_INC_THRESHOLD 30 - -void -RATEvTxRateFallBack( - void *pDeviceHandler, - PKnownNodeDB psNodeDBTable -) -{ - struct vnt_private *pDevice = pDeviceHandler; - unsigned short wIdxDownRate = 0; - unsigned int ii; - bool bAutoRate[MAX_RATE] = {true, true, true, true, false, false, true, true, true, true, true, true}; - unsigned long dwThroughputTbl[MAX_RATE] = {10, 20, 55, 110, 60, 90, 120, 180, 240, 360, 480, 540}; - unsigned long dwThroughput = 0; - unsigned short wIdxUpRate = 0; - unsigned long dwTxDiff = 0; - - if (pDevice->pMgmt->eScanState != WMAC_NO_SCANNING) - /* Don't do Fallback when scanning Channel */ - return; - - psNodeDBTable->uTimeCount++; - - if (psNodeDBTable->uTxFail[MAX_RATE] > psNodeDBTable->uTxOk[MAX_RATE]) - dwTxDiff = psNodeDBTable->uTxFail[MAX_RATE] - psNodeDBTable->uTxOk[MAX_RATE]; - - if ((psNodeDBTable->uTxOk[MAX_RATE] < AUTORATE_TXOK_CNT) && - (dwTxDiff < AUTORATE_TXFAIL_CNT) && - (psNodeDBTable->uTimeCount < AUTORATE_TIMEOUT)) { - return; - } - - if (psNodeDBTable->uTimeCount >= AUTORATE_TIMEOUT) - psNodeDBTable->uTimeCount = 0; - - for (ii = 0; ii < MAX_RATE; ii++) { - if (psNodeDBTable->wSuppRate & (0x0001<<ii)) { - if (bAutoRate[ii]) - wIdxUpRate = (unsigned short) ii; - - } else { - bAutoRate[ii] = false; - } - } - - for (ii = 0; ii <= psNodeDBTable->wTxDataRate; ii++) { - if ((psNodeDBTable->uTxOk[ii] != 0) || - (psNodeDBTable->uTxFail[ii] != 0)) { - dwThroughputTbl[ii] *= psNodeDBTable->uTxOk[ii]; - if (ii < RATE_11M) - psNodeDBTable->uTxFail[ii] *= 4; - - dwThroughputTbl[ii] /= (psNodeDBTable->uTxOk[ii] + psNodeDBTable->uTxFail[ii]); - } - } - dwThroughput = dwThroughputTbl[psNodeDBTable->wTxDataRate]; - - wIdxDownRate = psNodeDBTable->wTxDataRate; - for (ii = psNodeDBTable->wTxDataRate; ii > 0;) { - ii--; - if ((dwThroughputTbl[ii] > dwThroughput) && bAutoRate[ii]) { - dwThroughput = dwThroughputTbl[ii]; - wIdxDownRate = (unsigned short) ii; - } - } - psNodeDBTable->wTxDataRate = wIdxDownRate; - if (psNodeDBTable->uTxOk[MAX_RATE]) { - if (psNodeDBTable->uTxOk[MAX_RATE] > - (psNodeDBTable->uTxFail[MAX_RATE] * 4)) { - psNodeDBTable->wTxDataRate = wIdxUpRate; - } - } else { - /* adhoc, if uTxOk =0 & uTxFail = 0 */ - if (psNodeDBTable->uTxFail[MAX_RATE] == 0) - psNodeDBTable->wTxDataRate = wIdxUpRate; - } - - /* 2008-5-8 <add> by chester */ - TxRate_iwconfig = psNodeDBTable->wTxDataRate; - s_vResetCounter(psNodeDBTable); -} - -/*+ - * - * Description: - * This routine is used to assemble available Rate IE. - * - * Parameters: - * In: - * pDevice - * Out: - * - * Return Value: None - * - -*/ -unsigned char -RATEuSetIE( - PWLAN_IE_SUPP_RATES pSrcRates, - PWLAN_IE_SUPP_RATES pDstRates, - unsigned int uRateLen -) -{ - unsigned int ii, uu, uRateCnt = 0; - - if ((pSrcRates == NULL) || (pDstRates == NULL)) - return 0; - - if (pSrcRates->len == 0) - return 0; - - for (ii = 0; ii < uRateLen; ii++) { - for (uu = 0; uu < pSrcRates->len; uu++) { - if ((pSrcRates->abyRates[uu] & 0x7F) == acbyIERate[ii]) { - pDstRates->abyRates[uRateCnt++] = pSrcRates->abyRates[uu]; - break; - } - } - } - return (unsigned char)uRateCnt; -} |