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Diffstat (limited to '')
| -rw-r--r-- | drivers/staging/vt6656/datarate.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/drivers/staging/vt6656/datarate.c b/drivers/staging/vt6656/datarate.c deleted file mode 100644 index 8032d6b5b383..000000000000 --- a/drivers/staging/vt6656/datarate.c +++ /dev/null @@ -1,364 +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 "tmacro.h" -#include "mac.h" -#include "80211mgr.h" -#include "bssdb.h" -#include "datarate.h" -#include "card.h" -#include "baseband.h" -#include "rf.h" - -/* static int msglevel = MSG_LEVEL_DEBUG; */ -static int msglevel = MSG_LEVEL_INFO; -static const u8 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 - -void s_vResetCounter(PKnownNodeDB psNodeDBTable); - -void s_vResetCounter(PKnownNodeDB psNodeDBTable) -{ - u8 ii; - - /* clear statistics counter for auto_rate */ - for (ii = 0; ii <= MAX_RATE; ii++) { - psNodeDBTable->uTxOk[ii] = 0; - psNodeDBTable->uTxFail[ii] = 0; - } -} - -/*+ - * - * 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 - -/*+ - * - * Description: - * Get RateIdx from the value in SuppRates IE or ExtSuppRates IE - * - * Parameters: - * In: - * u8 - Rate value in SuppRates IE or ExtSuppRates IE - * Out: - * none - * - * Return Value: RateIdx - * --*/ -u16 RATEwGetRateIdx(u8 byRate) -{ - u16 ii; - - /* erase BasicRate flag */ - byRate = byRate & 0x7F; - - 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(struct vnt_private *pDevice, - PWLAN_IE_SUPP_RATES pItemRates, PWLAN_IE_SUPP_RATES pItemExtRates, - int bUpdateBasicRate, u16 *pwMaxBasicRate, u16 *pwMaxSuppRate, - u16 *pwSuppRate, u8 *pbyTopCCKRate, u8 *pbyTopOFDMRate) -{ - int ii; - u8 byHighSuppRate = 0, byRate = 0; - u16 wOldBasicRate = pDevice->wBasicRate; - u32 uRateLen; - - if (pItemRates == NULL) - return; - - *pwSuppRate = 0; - uRateLen = pItemRates->len; - - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ParseMaxRate Len: %d\n", uRateLen); - if (pDevice->byBBType != BB_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 = (u8)(pItemRates->abyRates[ii]); - if (WLAN_MGMT_IS_BASICRATE(byRate) && - (bUpdateBasicRate == true)) { - /* - * add to basic rate set, update pDevice->byTopCCKBasicRate and - * pDevice->byTopOFDMBasicRate - */ - CARDbAddBasicRate((void *)pDevice, RATEwGetRateIdx(byRate)); - DBG_PRT(MSG_LEVEL_DEBUG, - KERN_INFO"ParseMaxRate AddBasicRate: %d\n", - RATEwGetRateIdx(byRate)); - } - byRate = (u8)(pItemRates->abyRates[ii]&0x7F); - if (byHighSuppRate == 0) - byHighSuppRate = byRate; - if (byRate > byHighSuppRate) - byHighSuppRate = byRate; - *pwSuppRate |= (1<<RATEwGetRateIdx(byRate)); - } - if ((pItemExtRates != NULL) && (pItemExtRates->byElementID == WLAN_EID_EXTSUPP_RATES) && - (pDevice->byBBType != BB_TYPE_11B)) { - - unsigned int uExtRateLen = pItemExtRates->len; - - if (uExtRateLen > WLAN_RATES_MAXLEN) - uExtRateLen = WLAN_RATES_MAXLEN; - - for (ii = 0; ii < uExtRateLen; ii++) { - byRate = (u8)(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, RATEwGetRateIdx(byRate)); - DBG_PRT(MSG_LEVEL_DEBUG, - KERN_INFO"ParseMaxRate AddBasicRate: %d\n", - RATEwGetRateIdx(byRate)); - } - byRate = (u8)(pItemExtRates->abyRates[ii]&0x7F); - if (byHighSuppRate == 0) - byHighSuppRate = byRate; - if (byRate > byHighSuppRate) - byHighSuppRate = byRate; - *pwSuppRate |= (1<<RATEwGetRateIdx(byRate)); - - /* DBG_PRN_GRP09(("ParseMaxRate : HighSuppRate: %d, %X\n", - * RATEwGetRateIdx(byRate), byRate)); - */ - } - } - - if ((pDevice->byPacketType == PK_TYPE_11GB) - && CARDbIsOFDMinBasicRate((void *)pDevice)) { - pDevice->byPacketType = PK_TYPE_11GA; - } - - *pbyTopCCKRate = pDevice->byTopCCKBasicRate; - *pbyTopOFDMRate = pDevice->byTopOFDMBasicRate; - *pwMaxSuppRate = RATEwGetRateIdx(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->byBBType); - - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"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(struct vnt_private *pDevice, - PKnownNodeDB psNodeDBTable) -{ - struct vnt_manager *pMgmt = &pDevice->vnt_mgmt; - u16 wIdxDownRate = 0; - int ii; - int bAutoRate[MAX_RATE] = {true, true, true, true, false, false, true, - true, true, true, true, true}; - u32 dwThroughputTbl[MAX_RATE] = {10, 20, 55, 110, 60, 90, 120, 180, - 240, 360, 480, 540}; - u32 dwThroughput = 0; - u16 wIdxUpRate = 0; - u32 dwTxDiff = 0; - - if (pMgmt->eScanState != WMAC_NO_SCANNING) - return; /* Don't do Fallback when scanning Channel */ - - 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] == true) - wIdxUpRate = (u16) 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]); - } - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Rate %d,Ok: %d, Fail:%d, Throughput:%d\n", - ii, (int)psNodeDBTable->uTxOk[ii], (int)psNodeDBTable->uTxFail[ii], (int)dwThroughputTbl[ii]); - } - dwThroughput = dwThroughputTbl[psNodeDBTable->wTxDataRate]; - - wIdxDownRate = psNodeDBTable->wTxDataRate; - for (ii = psNodeDBTable->wTxDataRate; ii > 0;) { - ii--; - if ((dwThroughputTbl[ii] > dwThroughput) && - (bAutoRate[ii] == true)) { - dwThroughput = dwThroughputTbl[ii]; - wIdxDownRate = (u16) 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(total) == 0 & uTxFail(total) == 0 */ - if (psNodeDBTable->uTxFail[MAX_RATE] == 0) - psNodeDBTable->wTxDataRate = wIdxUpRate; - } - - if (pDevice->byBBType == BB_TYPE_11A) { - if (psNodeDBTable->wTxDataRate <= RATE_11M) - psNodeDBTable->wTxDataRate = RATE_6M; - } - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"uTxOk[MAX_RATE] %d, uTxFail[MAX_RATE]:%d\n", (int)psNodeDBTable->uTxOk[MAX_RATE], (int)psNodeDBTable->uTxFail[MAX_RATE]); - s_vResetCounter(psNodeDBTable); - DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Rate: %d, U:%d, D:%d\n", (int)psNodeDBTable->wTxDataRate, (int)wIdxUpRate, (int)wIdxDownRate); - return; -} - -/*+ - * - * Description: - * This routine is used to assemble available Rate IE. - * - * Parameters: - * In: - * pDevice - * Out: - * - * Return Value: None - * --*/ -u8 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 (u8)uRateCnt; -} |