/* ======================================================================== Routine Description: Handle a alarm. Arguments: pAd - WLAN control block pointer Return Value: None Note: You can use different methods to handle QBSS Load alarm here. Current methods are: 1. Change 20/40 to 20-only. 2. Change channel to the clear channel. ======================================================================== */ static VOID QBSS_LoadAlarm( IN RTMP_ADAPTER *pAd) { /* suspend alarm until channel switch */ QBSS_LoadAlarmSuspend(pAd); pAd->QloadAlarmNumber ++; /* check if we have already been 20M bandwidth */ #ifdef DOT11_N_SUPPORT #ifdef DOT11N_DRAFT3 if ((pAd->CommonCfg.AddHTInfo.AddHtInfo.ExtChanOffset != 0) && (pAd->CommonCfg.AddHTInfo.AddHtInfo.RecomWidth != 0)) { MAC_TABLE *pMacTable; UINT32 StaId; DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Change to 20 bw...\n")); /* disassociate stations without D3 2040Coexistence function */ pMacTable = &pAd->MacTab; for(StaId=1; StaId<MAX_LEN_OF_MAC_TABLE; StaId++) { MAC_TABLE_ENTRY *pEntry = &pMacTable->Content[StaId]; BOOLEAN bDisconnectSta = FALSE; if (!IS_ENTRY_CLIENT(pEntry)) continue; /* End of if */ if (pEntry->Sst != SST_ASSOC) continue; /* End of if */ if (pEntry->BSS2040CoexistenceMgmtSupport) bDisconnectSta = TRUE; /* End of if */ if (bDisconnectSta) { /* send wireless event - for ageout */ RTMPSendWirelessEvent(pAd, IW_AGEOUT_EVENT_FLAG, pEntry->Addr, 0, 0); { PUCHAR pOutBuffer = NULL; NDIS_STATUS NStatus; ULONG FrameLen = 0; HEADER_802_11 DeAuthHdr; USHORT Reason; /* send out a DISASSOC request frame */ NStatus = MlmeAllocateMemory(pAd, &pOutBuffer); if (NStatus != NDIS_STATUS_SUCCESS) { DBGPRINT(RT_DEBUG_TRACE, (" MlmeAllocateMemory fail ..\n")); /*NdisReleaseSpinLock(&pAd->MacTabLock); */ continue; } Reason = REASON_DEAUTH_STA_LEAVING; MgtMacHeaderInit(pAd, &DeAuthHdr, SUBTYPE_DEAUTH, 0, pEntry->Addr, #ifdef P2P_SUPPORT pAd->ApCfg.MBSSID[pEntry->apidx].Bssid, #endif /* P2P_SUPPORT */ pAd->ApCfg.MBSSID[pEntry->apidx].Bssid); MakeOutgoingFrame(pOutBuffer, &FrameLen, sizeof(HEADER_802_11), &DeAuthHdr, 2, &Reason, END_OF_ARGS); MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen); MlmeFreeMemory(pAd, pOutBuffer); } DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Deauth the station " "%02x:%02x:%02x:%02x:%02x:%02x\n", pEntry->Addr[0], pEntry->Addr[1], pEntry->Addr[2], pEntry->Addr[3], pEntry->Addr[4], pEntry->Addr[5])); MacTableDeleteEntry(pAd, pEntry->Aid, pEntry->Addr); continue; } /* End of if */ } /* End of for */ /* for 11n */ pAd->CommonCfg.AddHTInfo.AddHtInfo.RecomWidth = 0; pAd->CommonCfg.AddHTInfo.AddHtInfo.ExtChanOffset = 0; /* always 20M */ pAd->CommonCfg.RegTransmitSetting.field.BW = BW_20; /* mark alarm flag */ pAd->FlgQloadAlarm = TRUE; QBSS_LoadAlarmResume(pAd); } else #endif /* DOT11N_DRAFT3 */ #endif /* DOT11_N_SUPPORT */ { /* we are in 20MHz bandwidth so try to switch channel */ DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Switch channel...\n")); /* send command to switch channel */ RTEnqueueInternalCmd(pAd, CMDTHREAD_CHAN_RESCAN, NULL, 0); } /* End of if */ } /* End of QBSS_LoadAlarm */
/* ======================================================================== Routine Description: Handle a alarm. Arguments: pAd - WLAN control block pointer Return Value: None Note: You can use different methods to handle QBSS Load alarm here. Current methods are: 1. Change 20/40 to 20-only. 2. Change channel to the clear channel. ======================================================================== */ static VOID QBSS_LoadAlarm( IN struct rtmp_adapter *pAd) { /* suspend alarm until channel switch */ QBSS_LoadAlarmSuspend(pAd); pAd->QloadAlarmNumber ++; /* check if we have already been 20M bandwidth */ if ((pAd->CommonCfg.AddHTInfo.AddHtInfo.ExtChanOffset != 0) && (pAd->CommonCfg.AddHTInfo.AddHtInfo.RecomWidth != 0)) { struct mt7612u_mac_table *pMacTable; uint32_t StaId; DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Change to 20 bw...\n")); /* disassociate stations without D3 2040Coexistence function */ pMacTable = &pAd->MacTab; for(StaId=1; StaId<MAX_LEN_OF_MAC_TABLE; StaId++) { MAC_TABLE_ENTRY *pEntry = &pMacTable->Content[StaId]; bool bDisconnectSta = false; if (!IS_ENTRY_CLIENT(pEntry)) continue; if (pEntry->Sst != SST_ASSOC) continue; if (pEntry->BSS2040CoexistenceMgmtSupport) bDisconnectSta = true; if (bDisconnectSta) { /* send wireless event - for ageout */ RTMPSendWirelessEvent(pAd, IW_AGEOUT_EVENT_FLAG, pEntry->Addr, 0, 0); { u8 *pOutBuffer = NULL; int NStatus; ULONG FrameLen = 0; HEADER_802_11 DeAuthHdr; unsigned short Reason; /* send out a DISASSOC request frame */ pOutBuffer = kmalloc(MGMT_DMA_BUFFER_SIZE, GFP_ATOMIC); if (pOutBuffer == NULL) { DBGPRINT(RT_DEBUG_TRACE, (" kmalloc fail ..\n")); /*NdisReleaseSpinLock(&pAd->MacTabLock); */ continue; } Reason = REASON_DEAUTH_STA_LEAVING; MgtMacHeaderInit(pAd, &DeAuthHdr, SUBTYPE_DEAUTH, 0, pEntry->Addr, pAd->ApCfg.MBSSID[pEntry->apidx].wdev.if_addr, pAd->ApCfg.MBSSID[pEntry->apidx].wdev.bssid); MakeOutgoingFrame(pOutBuffer, &FrameLen, sizeof(HEADER_802_11), &DeAuthHdr, 2, &Reason, END_OF_ARGS); MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen); kfree(pOutBuffer); } DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Deauth the station " "%02x:%02x:%02x:%02x:%02x:%02x\n", PRINT_MAC(pEntry->Addr))); MacTableDeleteEntry(pAd, pEntry->wcid, pEntry->Addr); continue; } } /* for 11n */ pAd->CommonCfg.AddHTInfo.AddHtInfo.RecomWidth = 0; pAd->CommonCfg.AddHTInfo.AddHtInfo.ExtChanOffset = 0; /* always 20M */ pAd->CommonCfg.RegTransmitSetting.field.BW = BW_20; /* mark alarm flag */ pAd->FlgQloadAlarm = true; QBSS_LoadAlarmResume(pAd); } else { /* we are in 20MHz bandwidth so try to switch channel */ DBGPRINT(RT_DEBUG_TRACE, ("qbss> Alarm! Switch channel...\n")); /* send command to switch channel */ RTEnqueueInternalCmd(pAd, CMDTHREAD_CHAN_RESCAN, NULL, 0); } }