/* ========================================================================== Description: Scan next channel ========================================================================== */ VOID ScanNextChannel( IN PRTMP_ADAPTER pAd, IN UCHAR OpMode) { UCHAR ScanType = pAd->MlmeAux.ScanType; UINT ScanTimeIn5gChannel = SHORT_CHANNEL_TIME; BOOLEAN ScanPending = FALSE; RALINK_TIMER_STRUCT *sc_timer; UINT stay_time = 0; #ifdef RALINK_ATE /* Nothing to do in ATE mode. */ if (ATE_ON(pAd)) return; #endif /* RALINK_ATE */ #ifdef CONFIG_STA_SUPPORT IF_DEV_CONFIG_OPMODE_ON_STA(pAd) { if (MONITOR_ON(pAd)) return; } ScanPending = ((pAd->StaCfg.bImprovedScan) && (pAd->StaCfg.ScanChannelCnt>=7)); #endif /* CONFIG_STA_SUPPORT */ #ifdef RT_CFG80211_SUPPORT #ifdef CONFIG_STA_SUPPORT if ( (pAd->pCfg80211ChanList != NULL) && (pAd->MlmeAux.Channel != 0)) { UINT32 ChanId; for ( ChanId = 0 ; ChanId <pAd->Cfg80211ChanListLan ; ChanId++ ) { if ( pAd->pCfg80211ChanList[ChanId] >= pAd->MlmeAux.Channel ) { pAd->MlmeAux.Channel = pAd->pCfg80211ChanList[ChanId]; break; } } } #endif /* CONFIG_STA_SUPPORT */ #endif /* RT_CFG80211_SUPPORT */ if ((pAd->MlmeAux.Channel == 0) || ScanPending) { scan_ch_restore(pAd, OpMode); } #ifdef RTMP_MAC_USB #ifdef CONFIG_STA_SUPPORT else if (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NIC_NOT_EXIST) && (OpMode == OPMODE_STA)) { pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE; MlmeCntlConfirm(pAd, MT2_SCAN_CONF, MLME_FAIL_NO_RESOURCE); } #endif /* CONFIG_STA_SUPPORT */ #endif /* RTMP_MAC_USB */ else { #ifdef CONFIG_STA_SUPPORT if (OpMode == OPMODE_STA) { /* BBP and RF are not accessible in PS mode, we has to wake them up first*/ if (OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_DOZE)) AsicForceWakeup(pAd, TRUE); /* leave PSM during scanning. otherwise we may lost ProbeRsp & BEACON*/ if (pAd->StaCfg.Psm == PWR_SAVE) RTMP_SET_PSM_BIT(pAd, PWR_ACTIVE); } #endif /* CONFIG_STA_SUPPORT */ AsicSwitchChannel(pAd, pAd->MlmeAux.Channel, TRUE); AsicLockChannel(pAd, pAd->MlmeAux.Channel); #ifdef CONFIG_STA_SUPPORT if (OpMode == OPMODE_STA) { BOOLEAN bScanPassive = FALSE; if (pAd->MlmeAux.Channel > 14) { if ((pAd->CommonCfg.bIEEE80211H == 1) && RadarChannelCheck(pAd, pAd->MlmeAux.Channel)) bScanPassive = TRUE; } #ifdef CARRIER_DETECTION_SUPPORT if (pAd->CommonCfg.CarrierDetect.Enable == TRUE) bScanPassive = TRUE; #endif /* CARRIER_DETECTION_SUPPORT */ if (bScanPassive) { ScanType = SCAN_PASSIVE; ScanTimeIn5gChannel = MIN_CHANNEL_TIME; } } #endif /* CONFIG_STA_SUPPORT */ /* Check if channel if passive scan under current regulatory domain */ if (CHAN_PropertyCheck(pAd, pAd->MlmeAux.Channel, CHANNEL_PASSIVE_SCAN) == TRUE) ScanType = SCAN_PASSIVE; if (OpMode == OPMODE_AP) sc_timer = &pAd->MlmeAux.APScanTimer; else sc_timer = &pAd->MlmeAux.ScanTimer; /* We need to shorten active scan time in order for WZC connect issue */ /* Chnage the channel scan time for CISCO stuff based on its IAPP announcement */ if (ScanType == FAST_SCAN_ACTIVE) stay_time = FAST_ACTIVE_SCAN_TIME; else /* must be SCAN_PASSIVE or SCAN_ACTIVE*/ { #ifdef CONFIG_STA_SUPPORT pAd->StaCfg.ScanChannelCnt++; #endif /* CONFIG_STA_SUPPORT */ #ifdef CONFIG_AP_SUPPORT if ((OpMode == OPMODE_AP) && (pAd->ApCfg.bAutoChannelAtBootup)) stay_time = AUTO_CHANNEL_SEL_TIMEOUT; else #endif /* CONFIG_AP_SUPPORT */ if (WMODE_CAP_2G(pAd->CommonCfg.PhyMode) && WMODE_CAP_5G(pAd->CommonCfg.PhyMode)) { if (pAd->MlmeAux.Channel > 14) stay_time = ScanTimeIn5gChannel; else stay_time = MIN_CHANNEL_TIME; } else stay_time = MAX_CHANNEL_TIME; } RTMPSetTimer(sc_timer, stay_time); if (SCAN_MODE_ACT(ScanType)) { if (scan_active(pAd, OpMode, ScanType) == FALSE) return; } /* For SCAN_CISCO_PASSIVE, do nothing and silently wait for beacon or other probe reponse*/ #ifdef CONFIG_STA_SUPPORT if (OpMode == OPMODE_STA) pAd->Mlme.SyncMachine.CurrState = SCAN_LISTEN; #endif /* CONFIG_STA_SUPPORT */ #ifdef CONFIG_AP_SUPPORT if (OpMode == OPMODE_AP) pAd->Mlme.ApSyncMachine.CurrState = AP_SCAN_LISTEN; #endif /* CONFIG_AP_SUPPORT */ } }
/* ========================================================================== Description: Scan next channel ========================================================================== */ void ScanNextChannel(struct rt_rtmp_adapter *pAd) { struct rt_header_802_11 Hdr80211; u8 *pOutBuffer = NULL; int NStatus; unsigned long FrameLen = 0; u8 SsidLen = 0, ScanType = pAd->MlmeAux.ScanType, BBPValue = 0; u16 Status; struct rt_header_802_11 * pHdr80211; u32 ScanTimeIn5gChannel = SHORT_CHANNEL_TIME; { if (MONITOR_ON(pAd)) return; } if (pAd->MlmeAux.Channel == 0) { if ((pAd->CommonCfg.BBPCurrentBW == BW_40) && (INFRA_ON(pAd) || (pAd->OpMode == OPMODE_AP)) ) { AsicSwitchChannel(pAd, pAd->CommonCfg.CentralChannel, FALSE); AsicLockChannel(pAd, pAd->CommonCfg.CentralChannel); RTMP_BBP_IO_READ8_BY_REG_ID(pAd, BBP_R4, &BBPValue); BBPValue &= (~0x18); BBPValue |= 0x10; RTMP_BBP_IO_WRITE8_BY_REG_ID(pAd, BBP_R4, BBPValue); DBGPRINT(RT_DEBUG_TRACE, ("SYNC - End of SCAN, restore to 40MHz channel %d, Total BSS[%02d]\n", pAd->CommonCfg.CentralChannel, pAd->ScanTab.BssNr)); } else { AsicSwitchChannel(pAd, pAd->CommonCfg.Channel, FALSE); AsicLockChannel(pAd, pAd->CommonCfg.Channel); DBGPRINT(RT_DEBUG_TRACE, ("SYNC - End of SCAN, restore to channel %d, Total BSS[%02d]\n", pAd->CommonCfg.Channel, pAd->ScanTab.BssNr)); } { /* */ /* To prevent data lost. */ /* Send an NULL data with turned PSM bit on to current associated AP before SCAN progress. */ /* Now, we need to send an NULL data with turned PSM bit off to AP, when scan progress done */ /* */ if (OPSTATUS_TEST_FLAG (pAd, fOP_STATUS_MEDIA_STATE_CONNECTED) && (INFRA_ON(pAd))) { NStatus = MlmeAllocateMemory(pAd, (void *)& pOutBuffer); if (NStatus == NDIS_STATUS_SUCCESS) { pHdr80211 = (struct rt_header_802_11 *) pOutBuffer; MgtMacHeaderInit(pAd, pHdr80211, SUBTYPE_NULL_FUNC, 1, pAd->CommonCfg.Bssid, pAd->CommonCfg.Bssid); pHdr80211->Duration = 0; pHdr80211->FC.Type = BTYPE_DATA; pHdr80211->FC.PwrMgmt = (pAd->StaCfg.Psm == PWR_SAVE); /* Send using priority queue */ MiniportMMRequest(pAd, 0, pOutBuffer, sizeof (struct rt_header_802_11)); DBGPRINT(RT_DEBUG_TRACE, ("MlmeScanReqAction -- Send PSM Data frame\n")); MlmeFreeMemory(pAd, pOutBuffer); RTMPusecDelay(5000); } } pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE; Status = MLME_SUCCESS; MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_SCAN_CONF, 2, &Status); } RTMP_CLEAR_FLAG(pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS); } #ifdef RTMP_MAC_USB else if (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NIC_NOT_EXIST) && (pAd->OpMode == OPMODE_STA)) { pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE; MlmeCntlConfirm(pAd, MT2_SCAN_CONF, MLME_FAIL_NO_RESOURCE); } #endif /* RTMP_MAC_USB // */ else { { /* BBP and RF are not accessible in PS mode, we has to wake them up first */ if (OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_DOZE)) AsicForceWakeup(pAd, TRUE); /* leave PSM during scanning. otherwise we may lost ProbeRsp & BEACON */ if (pAd->StaCfg.Psm == PWR_SAVE) RTMP_SET_PSM_BIT(pAd, PWR_ACTIVE); } AsicSwitchChannel(pAd, pAd->MlmeAux.Channel, TRUE); AsicLockChannel(pAd, pAd->MlmeAux.Channel); { if (pAd->MlmeAux.Channel > 14) { if ((pAd->CommonCfg.bIEEE80211H == 1) && RadarChannelCheck(pAd, pAd->MlmeAux. Channel)) { ScanType = SCAN_PASSIVE; ScanTimeIn5gChannel = MIN_CHANNEL_TIME; } } } /*Global country domain(ch1-11:active scan, ch12-14 passive scan) */ if ((pAd->MlmeAux.Channel <= 14) && (pAd->MlmeAux.Channel >= 12) && ((pAd->CommonCfg.CountryRegion & 0x7f) == REGION_31_BG_BAND)) { ScanType = SCAN_PASSIVE; } /* We need to shorten active scan time in order for WZC connect issue */ /* Chnage the channel scan time for CISCO stuff based on its IAPP announcement */ if (ScanType == FAST_SCAN_ACTIVE) RTMPSetTimer(&pAd->MlmeAux.ScanTimer, FAST_ACTIVE_SCAN_TIME); else /* must be SCAN_PASSIVE or SCAN_ACTIVE */ { if ((pAd->CommonCfg.PhyMode == PHY_11ABG_MIXED) || (pAd->CommonCfg.PhyMode == PHY_11ABGN_MIXED) || (pAd->CommonCfg.PhyMode == PHY_11AGN_MIXED) ) { if (pAd->MlmeAux.Channel > 14) RTMPSetTimer(&pAd->MlmeAux.ScanTimer, ScanTimeIn5gChannel); else RTMPSetTimer(&pAd->MlmeAux.ScanTimer, MIN_CHANNEL_TIME); } else RTMPSetTimer(&pAd->MlmeAux.ScanTimer, MAX_CHANNEL_TIME); } if ((ScanType == SCAN_ACTIVE) || (ScanType == FAST_SCAN_ACTIVE) ) { NStatus = MlmeAllocateMemory(pAd, &pOutBuffer); /*Get an unused nonpaged memory */ if (NStatus != NDIS_STATUS_SUCCESS) { DBGPRINT(RT_DEBUG_TRACE, ("SYNC - ScanNextChannel() allocate memory fail\n")); { pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE; Status = MLME_FAIL_NO_RESOURCE; MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_SCAN_CONF, 2, &Status); } return; } /* There is no need to send broadcast probe request if active scan is in effect. */ if ((ScanType == SCAN_ACTIVE) || (ScanType == FAST_SCAN_ACTIVE) ) SsidLen = pAd->MlmeAux.SsidLen; else SsidLen = 0; MgtMacHeaderInit(pAd, &Hdr80211, SUBTYPE_PROBE_REQ, 0, BROADCAST_ADDR, BROADCAST_ADDR); MakeOutgoingFrame(pOutBuffer, &FrameLen, sizeof(struct rt_header_802_11), &Hdr80211, 1, &SsidIe, 1, &SsidLen, SsidLen, pAd->MlmeAux.Ssid, 1, &SupRateIe, 1, &pAd->CommonCfg.SupRateLen, pAd->CommonCfg.SupRateLen, pAd->CommonCfg.SupRate, END_OF_ARGS); if (pAd->CommonCfg.ExtRateLen) { unsigned long Tmp; MakeOutgoingFrame(pOutBuffer + FrameLen, &Tmp, 1, &ExtRateIe, 1, &pAd->CommonCfg.ExtRateLen, pAd->CommonCfg.ExtRateLen, pAd->CommonCfg.ExtRate, END_OF_ARGS); FrameLen += Tmp; } if (pAd->CommonCfg.PhyMode >= PHY_11ABGN_MIXED) { unsigned long Tmp; u8 HtLen; u8 BROADCOM[4] = { 0x0, 0x90, 0x4c, 0x33 }; if (pAd->bBroadComHT == TRUE) { HtLen = pAd->MlmeAux.HtCapabilityLen + 4; MakeOutgoingFrame(pOutBuffer + FrameLen, &Tmp, 1, &WpaIe, 1, &HtLen, 4, &BROADCOM[0], pAd->MlmeAux. HtCapabilityLen, &pAd->MlmeAux. HtCapability, END_OF_ARGS); } else { HtLen = pAd->MlmeAux.HtCapabilityLen; MakeOutgoingFrame(pOutBuffer + FrameLen, &Tmp, 1, &HtCapIe, 1, &HtLen, HtLen, &pAd->CommonCfg. HtCapability, END_OF_ARGS); } FrameLen += Tmp; } MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen); MlmeFreeMemory(pAd, pOutBuffer); } /* For SCAN_CISCO_PASSIVE, do nothing and silently wait for beacon or other probe reponse */ pAd->Mlme.SyncMachine.CurrState = SCAN_LISTEN; } }