diff options
Diffstat (limited to 'drivers/staging/csr/unifi_pdu_processing.c')
| -rw-r--r-- | drivers/staging/csr/unifi_pdu_processing.c | 3755 |
1 files changed, 3755 insertions, 0 deletions
diff --git a/drivers/staging/csr/unifi_pdu_processing.c b/drivers/staging/csr/unifi_pdu_processing.c new file mode 100644 index 0000000..7c7e8d4 --- /dev/null +++ b/drivers/staging/csr/unifi_pdu_processing.c @@ -0,0 +1,3755 @@ +/* + * --------------------------------------------------------------------------- + * FILE: unifi_pdu_processing.c + * + * PURPOSE: + * This file provides the PDU handling functionality before it gets sent to unfi and after + * receiving a PDU from unifi + * + * Copyright (C) 2010 by Cambridge Silicon Radio Ltd. + * + * Refer to LICENSE.txt included with this source code for details on + * the license terms. + * + * --------------------------------------------------------------------------- + */ + + +#include <linux/types.h> +#include <linux/etherdevice.h> +#include <linux/vmalloc.h> + +#include "csr_wifi_hip_unifi.h" +#include "csr_wifi_hip_conversions.h" +#include "csr_time.h" +#include "unifi_priv.h" +#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) +#include <net/iw_handler.h> +#endif +#include <net/pkt_sched.h> + +#ifdef CSR_SUPPORT_SME +static void _update_buffered_pkt_params_after_alignment(unifi_priv_t *priv, bulk_data_param_t *bulkdata, + tx_buffered_packets_t* buffered_pkt) +{ + struct sk_buff *skb ; + u32 align_offset; + + if (priv == NULL || bulkdata == NULL || buffered_pkt == NULL){ + return; + } + + skb = (struct sk_buff*)bulkdata->d[0].os_net_buf_ptr; + align_offset = (u32)(long)(bulkdata->d[0].os_data_ptr) & (CSR_WIFI_ALIGN_BYTES-1); + if(align_offset){ + skb_pull(skb,align_offset); + } + + buffered_pkt->bulkdata.os_data_ptr = bulkdata->d[0].os_data_ptr; + buffered_pkt->bulkdata.data_length = bulkdata->d[0].data_length; + buffered_pkt->bulkdata.os_net_buf_ptr = bulkdata->d[0].os_net_buf_ptr; + buffered_pkt->bulkdata.net_buf_length = bulkdata->d[0].net_buf_length; +} +#endif + +void +unifi_frame_ma_packet_req(unifi_priv_t *priv, CSR_PRIORITY priority, + CSR_RATE TransmitRate, CSR_CLIENT_TAG hostTag, + u16 interfaceTag, CSR_TRANSMISSION_CONTROL transmissionControl, + CSR_PROCESS_ID leSenderProcessId, u8 *peerMacAddress, + CSR_SIGNAL *signal) +{ + + CSR_MA_PACKET_REQUEST *req = &signal->u.MaPacketRequest; + netInterface_priv_t *interfacePriv; + u8 ba_session_idx = 0; + ba_session_tx_struct *ba_session = NULL; + u8 *ba_addr = NULL; + + interfacePriv = priv->interfacePriv[interfaceTag]; + + unifi_trace(priv, UDBG5, + "In unifi_frame_ma_packet_req, Frame for Peer: %pMF\n", + peerMacAddress); + signal->SignalPrimitiveHeader.SignalId = CSR_MA_PACKET_REQUEST_ID; + signal->SignalPrimitiveHeader.ReceiverProcessId = 0; + signal->SignalPrimitiveHeader.SenderProcessId = leSenderProcessId; + + /* Fill the MA-PACKET.req */ + req->Priority = priority; + unifi_trace(priv, UDBG3, "Tx Frame with Priority: 0x%x\n", req->Priority); + + /* A value of 0 is used for auto selection of rates. But for P2P GO case + * for action frames the rate is governed by SME. Hence instead of 0, + * the rate is filled in with the value passed here + */ + req->TransmitRate = TransmitRate; + + /* packets from netdev then no confirm required but packets from + * Nme/Sme eapol data frames requires the confirmation + */ + req->TransmissionControl = transmissionControl; + req->VirtualInterfaceIdentifier = + uf_get_vif_identifier(interfacePriv->interfaceMode,interfaceTag); + memcpy(req->Ra.x, peerMacAddress, ETH_ALEN); + + if (hostTag == 0xffffffff) { + req->HostTag = interfacePriv->tag++; + req->HostTag |= 0x40000000; + unifi_trace(priv, UDBG3, "new host tag assigned = 0x%x\n", req->HostTag); + interfacePriv->tag &= 0x0fffffff; + } else { + req->HostTag = hostTag; + unifi_trace(priv, UDBG3, "host tag got from SME = 0x%x\n", req->HostTag); + } + /* check if BA session exists for the peer MAC address on same tID */ + if(interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_AP || + interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_P2PGO){ + ba_addr = peerMacAddress; + }else{ + ba_addr = interfacePriv->bssid.a; + } + for (ba_session_idx=0; ba_session_idx < MAX_SUPPORTED_BA_SESSIONS_TX; ba_session_idx++){ + ba_session = interfacePriv->ba_session_tx[ba_session_idx]; + if (ba_session){ + if ((!memcmp(ba_session->macAddress.a, ba_addr, ETH_ALEN)) && (ba_session->tID == priority)){ + req->TransmissionControl |= CSR_ALLOW_BA; + break; + } + } + } + + unifi_trace(priv, UDBG5, "leaving unifi_frame_ma_packet_req\n"); +} + +#ifdef CSR_SUPPORT_SME + +#define TRANSMISSION_CONTROL_TRIGGER_MASK 0x0001 +#define TRANSMISSION_CONTROL_EOSP_MASK 0x0002 + +static +int frame_and_send_queued_pdu(unifi_priv_t* priv,tx_buffered_packets_t* buffered_pkt, + CsrWifiRouterCtrlStaInfo_t *staRecord,u8 moreData , u8 eosp) +{ + + CSR_SIGNAL signal; + bulk_data_param_t bulkdata; + int result; + u8 toDs, fromDs, macHeaderLengthInBytes = MAC_HEADER_SIZE; + u8 *qc; + u16 *fc = (u16*)(buffered_pkt->bulkdata.os_data_ptr); + unsigned long lock_flags; + unifi_trace(priv, UDBG3, "frame_and_send_queued_pdu with moreData: %d , EOSP: %d\n",moreData,eosp); + unifi_frame_ma_packet_req(priv, buffered_pkt->priority, buffered_pkt->rate, buffered_pkt->hostTag, + buffered_pkt->interfaceTag, buffered_pkt->transmissionControl, + buffered_pkt->leSenderProcessId, buffered_pkt->peerMacAddress.a, &signal); + bulkdata.d[0].os_data_ptr = buffered_pkt->bulkdata.os_data_ptr; + bulkdata.d[0].data_length = buffered_pkt->bulkdata.data_length; + bulkdata.d[0].os_net_buf_ptr = buffered_pkt->bulkdata.os_net_buf_ptr; + bulkdata.d[0].net_buf_length = buffered_pkt->bulkdata.net_buf_length; + bulkdata.d[1].os_data_ptr = NULL; + bulkdata.d[1].data_length = 0; + bulkdata.d[1].os_net_buf_ptr =0; + bulkdata.d[1].net_buf_length =0; + + if(moreData) { + *fc |= cpu_to_le16(IEEE802_11_FC_MOREDATA_MASK); + } else { + *fc &= cpu_to_le16(~IEEE802_11_FC_MOREDATA_MASK); + } + + if((staRecord != NULL)&& (staRecord->wmmOrQosEnabled == TRUE)) + { + unifi_trace(priv, UDBG3, "frame_and_send_queued_pdu WMM Enabled: %d \n",staRecord->wmmOrQosEnabled); + + toDs = (*fc & cpu_to_le16(IEEE802_11_FC_TO_DS_MASK))?1 : 0; + fromDs = (*fc & cpu_to_le16(IEEE802_11_FC_FROM_DS_MASK))? 1: 0; + + switch(le16_to_cpu(*fc) & IEEE80211_FC_SUBTYPE_MASK) + { + case IEEE802_11_FC_TYPE_QOS_DATA & IEEE80211_FC_SUBTYPE_MASK: + case IEEE802_11_FC_TYPE_QOS_NULL & IEEE80211_FC_SUBTYPE_MASK: + /* If both are set then the Address4 exists (only for AP) */ + if (fromDs && toDs) { + /* 6 is the size of Address4 field */ + macHeaderLengthInBytes += (QOS_CONTROL_HEADER_SIZE + 6); + } else { + macHeaderLengthInBytes += QOS_CONTROL_HEADER_SIZE; + } + + /* If order bit set then HT control field is the part of MAC header */ + if (*fc & cpu_to_le16(IEEE80211_FC_ORDER_MASK)) { + macHeaderLengthInBytes += HT_CONTROL_HEADER_SIZE; + qc = (u8*)(buffered_pkt->bulkdata.os_data_ptr + (macHeaderLengthInBytes-6)); + } else { + qc = (u8*)(buffered_pkt->bulkdata.os_data_ptr + (macHeaderLengthInBytes-2)); + } + *qc = eosp ? *qc | (1 << 4) : *qc & (~(1 << 4)); + break; + default: + if (fromDs && toDs) + macHeaderLengthInBytes += 6; + } + + } + result = ul_send_signal_unpacked(priv, &signal, &bulkdata); + if(result){ + _update_buffered_pkt_params_after_alignment(priv, &bulkdata,buffered_pkt); + } + + /* Decrement the packet counts queued in driver */ + if (result != -ENOSPC) { + /* protect entire counter updation by disabling preemption */ + if (!priv->noOfPktQueuedInDriver) { + unifi_error(priv, "packets queued in driver 0 still decrementing\n"); + } else { + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + priv->noOfPktQueuedInDriver--; + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + } + /* Sta Record is available for all unicast (except genericMgt Frames) & in other case its NULL */ + if (staRecord) { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + if (!staRecord->noOfPktQueued) { + unifi_error(priv, "packets queued in driver per station is 0 still decrementing\n"); + } else { + staRecord->noOfPktQueued--; + } + /* if the STA alive probe frame has failed then reset the saved host tag */ + if (result){ + if (staRecord->nullDataHostTag == buffered_pkt->hostTag){ + staRecord->nullDataHostTag = INVALID_HOST_TAG; + } + } + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + + } + return result; +} +#ifdef CSR_SUPPORT_SME +static +void set_eosp_transmit_ctrl(unifi_priv_t *priv, struct list_head *txList) +{ + /* dequeue the tx data packets from the appropriate queue */ + tx_buffered_packets_t *tx_q_item = NULL; + struct list_head *listHead; + struct list_head *placeHolder; + unsigned long lock_flags; + + + unifi_trace(priv, UDBG5, "entering set_eosp_transmit_ctrl\n"); + /* check for list empty */ + if (list_empty(txList)) { + unifi_warning(priv, "In set_eosp_transmit_ctrl, the list is empty\n"); + return; + } + + /* return the last node , and modify it. */ + + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_for_each_prev_safe(listHead, placeHolder, txList) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + tx_q_item->transmissionControl |= TRANSMISSION_CONTROL_EOSP_MASK; + tx_q_item->transmissionControl = (tx_q_item->transmissionControl & ~(CSR_NO_CONFIRM_REQUIRED)); + unifi_trace(priv, UDBG1, + "set_eosp_transmit_ctrl Transmission Control = 0x%x hostTag = 0x%x \n",tx_q_item->transmissionControl,tx_q_item->hostTag); + unifi_trace(priv,UDBG3,"in set_eosp_transmit_ctrl no.of buffered frames %d\n",priv->noOfPktQueuedInDriver); + break; + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + unifi_trace(priv, UDBG1,"List Empty %d\n",list_empty(txList)); + unifi_trace(priv, UDBG5, "leaving set_eosp_transmit_ctrl\n"); + return; +} + +static +void send_vif_availibility_rsp(unifi_priv_t *priv,CSR_VIF_IDENTIFIER vif,CSR_RESULT_CODE resultCode) +{ + CSR_SIGNAL signal; + CSR_MA_VIF_AVAILABILITY_RESPONSE *rsp; + bulk_data_param_t *bulkdata = NULL; + int r; + + unifi_trace(priv, UDBG3, "send_vif_availibility_rsp : invoked with resultCode = %d \n", resultCode); + + memset(&signal,0,sizeof(CSR_SIGNAL)); + rsp = &signal.u.MaVifAvailabilityResponse; + rsp->VirtualInterfaceIdentifier = vif; + rsp->ResultCode = resultCode; + signal.SignalPrimitiveHeader.SignalId = CSR_MA_VIF_AVAILABILITY_RESPONSE_ID; + signal.SignalPrimitiveHeader.ReceiverProcessId = 0; + signal.SignalPrimitiveHeader.SenderProcessId = priv->netdev_client->sender_id; + + /* Send the signal to UniFi */ + r = ul_send_signal_unpacked(priv, &signal, bulkdata); + if(r) { + unifi_error(priv,"Availibility response sending failed %x status %d\n",vif,r); + } + else { + unifi_trace(priv, UDBG3, "send_vif_availibility_rsp : status = %d \n", r); + } +} +#endif + +static +void verify_and_accomodate_tx_packet(unifi_priv_t *priv) +{ + tx_buffered_packets_t *tx_q_item; + unsigned long lock_flags; + struct list_head *listHead, *list; + struct list_head *placeHolder; + u8 i, j,eospFramedeleted=0; + u8 thresholdExcedeDueToBroadcast = TRUE; + /* it will be made it interface Specific in the future when multi interfaces are supported , + right now interface 0 is considered */ + netInterface_priv_t *interfacePriv = priv->interfacePriv[0]; + CsrWifiRouterCtrlStaInfo_t *staInfo = NULL; + + unifi_trace(priv, UDBG3, "entering verify_and_accomodate_tx_packet\n"); + + for(i = 0; i < UNIFI_MAX_CONNECTIONS; i++) { + staInfo = interfacePriv->staInfo[i]; + if (staInfo && (staInfo->noOfPktQueued >= CSR_WIFI_DRIVER_MAX_PKT_QUEUING_THRESHOLD_PER_PEER)) { + /* remove the first(oldest) packet from the all the access catogory, since data + * packets for station record crossed the threshold limit (64 for AP supporting + * 8 peers) + */ + unifi_trace(priv,UDBG3,"number of station pkts queued= %d for sta id = %d\n", staInfo->noOfPktQueued, staInfo->aid); + for(j = 0; j < MAX_ACCESS_CATOGORY; j++) { + list = &staInfo->dataPdu[j]; + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_for_each_safe(listHead, placeHolder, list) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + list_del(listHead); + thresholdExcedeDueToBroadcast = FALSE; + unifi_net_data_free(priv, &tx_q_item->bulkdata); + kfree(tx_q_item); + tx_q_item = NULL; + if (!priv->noOfPktQueuedInDriver) { + unifi_error(priv, "packets queued in driver 0 still decrementing in %s\n", __FUNCTION__); + } else { + /* protection provided by spinlock */ + priv->noOfPktQueuedInDriver--; + + } + /* Sta Record is available for all unicast (except genericMgt Frames) & in other case its NULL */ + if (!staInfo->noOfPktQueued) { + unifi_error(priv, "packets queued in driver per station is 0 still decrementing in %s\n", __FUNCTION__); + } else { + spin_lock(&priv->staRecord_lock); + staInfo->noOfPktQueued--; + spin_unlock(&priv->staRecord_lock); + } + break; + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + } + } + } + if (thresholdExcedeDueToBroadcast && interfacePriv->noOfbroadcastPktQueued > CSR_WIFI_DRIVER_MINIMUM_BROADCAST_PKT_THRESHOLD ) { + /* Remove the packets from genericMulticastOrBroadCastFrames queue + * (the max packets in driver is reached due to broadcast/multicast frames) + */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_for_each_safe(listHead, placeHolder, &interfacePriv->genericMulticastOrBroadCastFrames) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + if(eospFramedeleted){ + tx_q_item->transmissionControl |= TRANSMISSION_CONTROL_EOSP_MASK; + tx_q_item->transmissionControl = (tx_q_item->transmissionControl & ~(CSR_NO_CONFIRM_REQUIRED)); + unifi_trace(priv, UDBG1,"updating eosp for next packet hostTag:= 0x%x ",tx_q_item->hostTag); + eospFramedeleted =0; + break; + } + + if(tx_q_item->transmissionControl & TRANSMISSION_CONTROL_EOSP_MASK ){ + eospFramedeleted = 1; + } + unifi_trace(priv,UDBG1, "freeing of multicast packets ToC = 0x%x hostTag = 0x%x \n",tx_q_item->transmissionControl,tx_q_item->hostTag); + list_del(listHead); + unifi_net_data_free(priv, &tx_q_item->bulkdata); + kfree(tx_q_item); + priv->noOfPktQueuedInDriver--; + spin_lock(&priv->staRecord_lock); + interfacePriv->noOfbroadcastPktQueued--; + spin_unlock(&priv->staRecord_lock); + if(!eospFramedeleted){ + break; + } + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + } + unifi_trace(priv, UDBG3, "leaving verify_and_accomodate_tx_packet\n"); +} + +static +CsrResult enque_tx_data_pdu(unifi_priv_t *priv, bulk_data_param_t *bulkdata, + struct list_head *list, CSR_SIGNAL *signal, + u8 requeueOnSamePos) +{ + + /* queue the tx data packets on to appropriate queue */ + CSR_MA_PACKET_REQUEST *req = &signal->u.MaPacketRequest; + tx_buffered_packets_t *tx_q_item; + unsigned long lock_flags; + + unifi_trace(priv, UDBG5, "entering enque_tx_data_pdu\n"); + if(!list) { + unifi_error(priv,"List is not specified\n"); + return CSR_RESULT_FAILURE; + } + + /* Removes aged packets & adds the incoming packet */ + if (priv->noOfPktQueuedInDriver >= CSR_WIFI_DRIVER_SUPPORT_FOR_MAX_PKT_QUEUEING) { + unifi_trace(priv,UDBG3,"number of pkts queued= %d \n", priv->noOfPktQueuedInDriver); + verify_and_accomodate_tx_packet(priv); + } + + + + tx_q_item = (tx_buffered_packets_t *)kmalloc(sizeof(tx_buffered_packets_t), GFP_ATOMIC); + if (tx_q_item == NULL) { + unifi_error(priv, + "Failed to allocate %d bytes for tx packet record\n", + sizeof(tx_buffered_packets_t)); + func_exit(); + return CSR_RESULT_FAILURE; + } + + /* disable the preemption */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + INIT_LIST_HEAD(&tx_q_item->q); + /* fill the tx_q structure members */ + tx_q_item->bulkdata.os_data_ptr = bulkdata->d[0].os_data_ptr; + tx_q_item->bulkdata.data_length = bulkdata->d[0].data_length; + tx_q_item->bulkdata.os_net_buf_ptr = bulkdata->d[0].os_net_buf_ptr; + tx_q_item->bulkdata.net_buf_length = bulkdata->d[0].net_buf_length; + tx_q_item->interfaceTag = req->VirtualInterfaceIdentifier & 0xff; + tx_q_item->hostTag = req->HostTag; + tx_q_item->leSenderProcessId = signal->SignalPrimitiveHeader.SenderProcessId; + tx_q_item->transmissionControl = req->TransmissionControl; + tx_q_item->priority = req->Priority; + tx_q_item->rate = req->TransmitRate; + memcpy(tx_q_item->peerMacAddress.a, req->Ra.x, ETH_ALEN); + + + + if (requeueOnSamePos) { + list_add(&tx_q_item->q, list); + } else { + list_add_tail(&tx_q_item->q, list); + } + + /* Count of packet queued in driver */ + priv->noOfPktQueuedInDriver++; + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + unifi_trace(priv, UDBG5, "leaving enque_tx_data_pdu\n"); + return CSR_RESULT_SUCCESS; +} + +#ifdef CSR_WIFI_REQUEUE_PACKET_TO_HAL +CsrResult unifi_reque_ma_packet_request (void *ospriv, u32 host_tag, + u16 txStatus, bulk_data_desc_t *bulkDataDesc) +{ + CsrResult status = CSR_RESULT_SUCCESS; + unifi_priv_t *priv = (unifi_priv_t*)ospriv; + netInterface_priv_t *interfacePriv; + struct list_head *list = NULL; + CsrWifiRouterCtrlStaInfo_t *staRecord = NULL; + bulk_data_param_t bulkData; + CSR_SIGNAL signal; + CSR_PRIORITY priority = 0; + u16 interfaceTag = 0; + unifi_TrafficQueue priority_q; + u16 frameControl = 0, frameType = 0; + unsigned long lock_flags; + + interfacePriv = priv->interfacePriv[interfaceTag]; + + /* If the current mode is not AP or P2PGO then just return failure + * to clear the hip slot + */ + if(!((interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_AP) || + (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_P2PGO))) { + return CSR_RESULT_FAILURE; + } + + unifi_trace(priv, UDBG6, "unifi_reque_ma_packet_request: host_tag = 0x%x\n", host_tag); + + staRecord = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, + (((u8 *) bulkDataDesc->os_data_ptr) + 4), + interfaceTag); + if (NULL == staRecord) { + unifi_trace(priv, UDBG5, "unifi_reque_ma_packet_request: Invalid STA record \n"); + return CSR_RESULT_FAILURE; + } + + /* Update TIM if MA-PACKET.cfm fails with status as Tx-retry-limit or No-BSS and then just return failure + * to clear the hip slot associated with the Packet + */ + if (CSR_TX_RETRY_LIMIT == txStatus || CSR_TX_NO_BSS == txStatus) { + if (staRecord->timSet == CSR_WIFI_TIM_RESET || staRecord->timSet == CSR_WIFI_TIM_RESETTING) + { + unifi_trace(priv, UDBG2, "unifi_reque_ma_packet_request: CFM failed with Retry Limit or No BSS-->update TIM\n"); + if (!staRecord->timRequestPendingFlag) { + update_tim(priv, staRecord->aid, 1, interfaceTag, staRecord->assignedHandle); + } + else { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 1; + unifi_trace(priv, UDBG6, "unifi_reque_ma_packet_request: One more UpdateTim Request(:%d)Queued for AID %x\n", + staRecord->updateTimReqQueued, staRecord->aid); + } + } + return CSR_RESULT_FAILURE; + } + else if ((CSR_TX_LIFETIME == txStatus) || (CSR_TX_BLOCK_ACK_TIMEOUT == txStatus) || + (CSR_TX_FAIL_TRANSMISSION_VIF_INTERRUPTED == txStatus) || + (CSR_TX_REJECTED_PEER_STATION_SLEEPING == txStatus) || + (CSR_TX_REJECTED_DTIM_STARTED == txStatus)) { + /* Extract the Frame control and the frame type */ + frameControl = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(bulkDataDesc->os_data_ptr); + frameType = ((frameControl & IEEE80211_FC_TYPE_MASK) >> FRAME_CONTROL_TYPE_FIELD_OFFSET); + + /* Mgmt frames will not be re-queued for Tx + * so just return failure to clear the hip slot + */ + if (IEEE802_11_FRAMETYPE_MANAGEMENT == frameType) { + return CSR_RESULT_FAILURE; + } + else if (IEEE802_11_FRAMETYPE_DATA == frameType) { + /* QOS NULL and DATA NULL frames will not be re-queued for Tx + * so just return failure to clear the hip slot + */ + if ((((frameControl & IEEE80211_FC_SUBTYPE_MASK) >> FRAME_CONTROL_SUBTYPE_FIELD_OFFSET) == QOS_DATA_NULL) || + (((frameControl & IEEE80211_FC_SUBTYPE_MASK) >> FRAME_CONTROL_SUBTYPE_FIELD_OFFSET)== DATA_NULL )) { + return CSR_RESULT_FAILURE; + } + } + + /* Extract the Packet priority */ + if (TRUE == staRecord->wmmOrQosEnabled) { + u16 qosControl = 0; + u8 dataFrameType = 0; + + dataFrameType =((frameControl & IEEE80211_FC_SUBTYPE_MASK) >> 4); + + if (dataFrameType == QOS_DATA) { + /* QoS control field is offset from frame control by 2 (frame control) + * + 2 (duration/ID) + 2 (sequence control) + 3*ETH_ALEN or 4*ETH_ALEN + */ + if((frameControl & IEEE802_11_FC_TO_DS_MASK) && (frameControl & IEEE802_11_FC_FROM_DS_MASK)) { + qosControl= CSR_GET_UINT16_FROM_LITTLE_ENDIAN(bulkDataDesc->os_data_ptr + 30); + } + else { + qosControl = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(bulkDataDesc->os_data_ptr + 24); + } + } + + priority = (CSR_PRIORITY)(qosControl & IEEE802_11_QC_TID_MASK); + + if (priority < CSR_QOS_UP0 || priority > CSR_QOS_UP7) { + unifi_trace(priv, UDBG5, "unifi_reque_ma_packet_request: Invalid priority:%x \n", priority); + return CSR_RESULT_FAILURE; + } + } + else { + priority = CSR_CONTENTION; + } + + /* Frame Bulk data to requeue it back to HAL Queues */ + bulkData.d[0].os_data_ptr = bulkDataDesc->os_data_ptr; + bulkData.d[0].data_length = bulkDataDesc->data_length; + bulkData.d[0].os_net_buf_ptr = bulkDataDesc->os_net_buf_ptr; + bulkData.d[0].net_buf_length = bulkDataDesc->net_buf_length; + + bulkData.d[1].os_data_ptr = NULL; + bulkData.d[1].os_net_buf_ptr = NULL; + bulkData.d[1].data_length = bulkData.d[1].net_buf_length = 0; + + /* Initialize signal to zero */ + memset(&signal, 0, sizeof(CSR_SIGNAL)); + + /* Frame MA Packet Req */ + unifi_frame_ma_packet_req(priv, priority, 0, host_tag, + interfaceTag, CSR_NO_CONFIRM_REQUIRED, + priv->netdev_client->sender_id, + staRecord->peerMacAddress.a, &signal); + + /* Find the Q-Priority */ + priority_q = unifi_frame_priority_to_queue(priority); + list = &staRecord->dataPdu[priority_q]; + + /* Place the Packet on to HAL Queue */ + status = enque_tx_data_pdu(priv, &bulkData, list, &signal, TRUE); + + /* Update the Per-station queued packet counter */ + if (!status) { + spin_lock_irqsave(&priv->staRecord_lock, lock_flags); + staRecord->noOfPktQueued++; + spin_unlock_irqrestore(&priv->staRecord_lock, lock_flags); + } + } + else { + /* Packet will not be re-queued for any of the other MA Packet Tx failure + * reasons so just return failure to clear the hip slot + */ + return CSR_RESULT_FAILURE; + } + + return status; +} +#endif + +static void is_all_ac_deliver_enabled_and_moredata(CsrWifiRouterCtrlStaInfo_t *staRecord, u8 *allDeliveryEnabled, u8 *dataAvailable) +{ + u8 i; + *allDeliveryEnabled = TRUE; + for (i = 0 ;i < MAX_ACCESS_CATOGORY; i++) { + if (!IS_DELIVERY_ENABLED(staRecord->powersaveMode[i])) { + /* One is is not Delivery Enabled */ + *allDeliveryEnabled = FALSE; + break; + } + } + if (*allDeliveryEnabled) { + *dataAvailable = (!list_empty(&staRecord->dataPdu[0]) || !list_empty(&staRecord->dataPdu[1]) + ||!list_empty(&staRecord->dataPdu[2]) ||!list_empty(&staRecord->dataPdu[3]) + ||!list_empty(&staRecord->mgtFrames)); + } +} + +/* + * --------------------------------------------------------------------------- + * uf_handle_tim_cfm + * + * + * This function updates tim status in host depending confirm status from firmware + * + * Arguments: + * priv Pointer to device private context struct + * cfm CSR_MLME_SET_TIM_CONFIRM + * receiverProcessId SenderProcessID to fetch handle & timSet status + * + * --------------------------------------------------------------------------- + */ +void uf_handle_tim_cfm(unifi_priv_t *priv, CSR_MLME_SET_TIM_CONFIRM *cfm, u16 receiverProcessId) +{ + u8 handle = CSR_WIFI_GET_STATION_HANDLE_FROM_RECEIVER_ID(receiverProcessId); + u8 timSetStatus = CSR_WIFI_GET_TIMSET_STATE_FROM_RECEIVER_ID(receiverProcessId); + u16 interfaceTag = (cfm->VirtualInterfaceIdentifier & 0xff); + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + CsrWifiRouterCtrlStaInfo_t *staRecord = NULL; + /* This variable holds what TIM value we wanted to set in firmware */ + u16 timSetValue = 0; + /* Irrespective of interface the count maintained */ + static u8 retryCount = 0; + unsigned long lock_flags; + unifi_trace(priv, UDBG3, "entering %s, handle = %x, timSetStatus = %x\n", __FUNCTION__, handle, timSetStatus); + + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_warning(priv, "bad interfaceTag = %x\n", interfaceTag); + return; + } + + if ((handle != CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE) && (handle >= UNIFI_MAX_CONNECTIONS)) { + unifi_warning(priv, "bad station Handle = %x\n", handle); + return; + } + + if (handle != CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE) { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + if ((staRecord = ((CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[handle]))) == NULL) { + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + unifi_warning(priv, "uf_handle_tim_cfm: station record is NULL handle = %x\n", handle); + return; + } + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + switch(timSetStatus) + { + case CSR_WIFI_TIM_SETTING: + timSetValue = CSR_WIFI_TIM_SET; + break; + case CSR_WIFI_TIM_RESETTING: + timSetValue = CSR_WIFI_TIM_RESET; + break; + default: + unifi_warning(priv, "timSet state is %x: Debug\n", timSetStatus); + return; + } + + /* check TIM confirm for success/failures */ + switch(cfm->ResultCode) + { + case CSR_RC_SUCCESS: + if (handle != CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE) { + /* Unicast frame & station record available */ + if (timSetStatus == staRecord->timSet) { + staRecord->timSet = timSetValue; + /* fh_cmd_q can also be full at some point of time!, + * resetting count as queue is cleaned by firmware at this point + */ + retryCount = 0; + unifi_trace(priv, UDBG2, "tim (%s) successfully in firmware\n", (timSetValue)?"SET":"RESET"); + } else { + unifi_trace(priv, UDBG3, "receiver processID = %x, success: request & confirm states are not matching in TIM cfm: Debug status = %x, staRecord->timSet = %x, handle = %x\n", + receiverProcessId, timSetStatus, staRecord->timSet, handle); + } + + /* Reset TIM pending flag to send next TIM request */ + staRecord->timRequestPendingFlag = FALSE; + + /* Make sure that one more UpdateTim request is queued, if Queued its value + * should be CSR_WIFI_TIM_SET or CSR_WIFI_TIM_RESET + */ + if (0xFF != staRecord->updateTimReqQueued) + { + /* Process the UpdateTim Request which is queued while previous UpdateTim was in progress */ + if (staRecord->timSet != staRecord->updateTimReqQueued) + { + unifi_trace(priv, UDBG2, "uf_handle_tim_cfm : Processing Queued UpdateTimReq \n"); + + update_tim(priv, staRecord->aid, staRecord->updateTimReqQueued, interfaceTag, handle); + + staRecord->updateTimReqQueued = 0xFF; + } + } + } else { + + interfacePriv->bcTimSet = timSetValue; + /* fh_cmd_q can also be full at some point of time!, + * resetting count as queue is cleaned by firmware at this point + */ + retryCount = 0; + unifi_trace(priv, UDBG3, "tim (%s) successfully for broadcast frame in firmware\n", (timSetValue)?"SET":"RESET"); + + /* Reset DTIM pending flag to send next DTIM request */ + interfacePriv->bcTimSetReqPendingFlag = FALSE; + + /* Make sure that one more UpdateDTim request is queued, if Queued its value + * should be CSR_WIFI_TIM_SET or CSR_WIFI_TIM_RESET + */ + if (0xFF != interfacePriv->bcTimSetReqQueued) + { + /* Process the UpdateTim Request which is queued while previous UpdateTim was in progress */ + if (interfacePriv->bcTimSet != interfacePriv->bcTimSetReqQueued) + { + unifi_trace(priv, UDBG2, "uf_handle_tim_cfm : Processing Queued UpdateDTimReq \n"); + + update_tim(priv, 0, interfacePriv->bcTimSetReqQueued, interfaceTag, 0xFFFFFFFF); + + interfacePriv->bcTimSetReqQueued = 0xFF; + } + } + + } + break; + case CSR_RC_INVALID_PARAMETERS: + case CSR_RC_INSUFFICIENT_RESOURCE: + /* check for max retry limit & send again + * MAX_RETRY_LIMIT is not maintained for each set of transactions..Its generic + * If failure crosses this Limit, we have to take a call to FIX + */ + if (retryCount > UNIFI_MAX_RETRY_LIMIT) { + u8 moreData = FALSE; + retryCount = 0; + /* Because of continuos traffic in fh_cmd_q the tim set request is failing (exceeding retry limit) + * but if we didn't synchronize our timSet varible state with firmware then it can cause below issues + * cond 1. We want to SET tim in firmware if its fails & max retry limit reached + * -> If host set's the timSet to 1, we wont try to send(as max retry reached) update tim but + * firmware is not updated with queue(TIM) status so it wont set TIM in beacon finally host start piling + * up data & wont try to set tim in firmware (This can cause worser performance) + * cond 2. We want to reset tim in firmware it fails & reaches max retry limit + * -> If host sets the timSet to Zero, it wont try to set a TIM request unless we wont have any packets + * to be queued, so beacon unnecessarily advertizes the TIM + */ + + if(staRecord) { + if(!staRecord->wmmOrQosEnabled) { + moreData = (!list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]) || + !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO]) || + !list_empty(&staRecord->mgtFrames)); + } else { + /* Peer is QSTA */ + u8 allDeliveryEnabled = 0, dataAvailable = 0; + /* Check if all AC's are Delivery Enabled */ + is_all_ac_deliver_enabled_and_moredata(staRecord, &allDeliveryEnabled, &dataAvailable); + /*check for more data in non-delivery enabled queues*/ + moreData = (uf_is_more_data_for_non_delivery_ac(staRecord) || (allDeliveryEnabled && dataAvailable)); + + } + /* To avoid cond 1 & 2, check internal Queues status, if we have more Data then set RESET the timSet(0), + * so we are trying to be in sync with firmware & next packets before queuing atleast try to + * set TIM in firmware otherwise it SET timSet(1) + */ + if (moreData) { + staRecord->timSet = CSR_WIFI_TIM_RESET; + } else { + staRecord->timSet = CSR_WIFI_TIM_SET; + } + } else { + /* Its a broadcast frames */ + moreData = (!list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames) || + !list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)); + if (moreData) { + update_tim(priv, 0, CSR_WIFI_TIM_SET, interfaceTag, 0xFFFFFFFF); + } else { + update_tim(priv, 0, CSR_WIFI_TIM_RESET, interfaceTag, 0xFFFFFFFF); + } + } + + unifi_error(priv, "no of error's for TIM setting crossed the Limit: verify\n"); + return; + } + retryCount++; + + if (handle != CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE) { + if (timSetStatus == staRecord->timSet) { + unifi_warning(priv, "tim request failed, retry for AID = %x\n", staRecord->aid); + update_tim(priv, staRecord->aid, timSetValue, interfaceTag, handle); + } else { + unifi_trace(priv, UDBG1, "failure: request & confirm states are not matching in TIM cfm: Debug status = %x, staRecord->timSet = %x\n", + timSetStatus, staRecord->timSet); + } + } else { + unifi_warning(priv, "tim request failed, retry for broadcast frames\n"); + update_tim(priv, 0, timSetValue, interfaceTag, 0xFFFFFFFF); + } + break; + default: + unifi_warning(priv, "tim update request failed resultcode = %x\n", cfm->ResultCode); + } + + unifi_trace(priv, UDBG2, "leaving %s\n", __FUNCTION__); +} + +/* + * --------------------------------------------------------------------------- + * update_tim + * + * + * This function updates tim status in firmware for AID[1 to UNIFI_MAX_CONNECTIONS] or + * AID[0] for broadcast/multicast packets. + * + * NOTE: The LSB (least significant BYTE) of senderId while sending this MLME premitive + * has been modified(utilized) as below + * + * SenderID in signal's SignalPrimitiveHeader is 2 byte the lowe byte bitmap is below + * + * station handle(6 bits) timSet Status (2 bits) + * --------------------- ---------------------- + * 0 0 0 0 0 0 | 0 0 + * + * timSet Status can be one of below: + * + * CSR_WIFI_TIM_RESET + * CSR_WIFI_TIM_RESETTING + * CSR_WIFI_TIM_SET + * CSR_WIFI_TIM_SETTING + * + * Arguments: + * priv Pointer to device private context struct + * aid can be 1 t0 UNIFI_MAX_CONNECTIONS & 0 means multicast/broadcast + * setTim value SET(1) / RESET(0) + * interfaceTag the interfaceID on which activity going on + * handle from (0 <= handle < UNIFI_MAX_CONNECTIONS) + * + * --------------------------------------------------------------------------- + */ +void update_tim(unifi_priv_t * priv, u16 aid, u8 setTim, u16 interfaceTag, u32 handle) +{ + CSR_SIGNAL signal; + s32 r; + CSR_MLME_SET_TIM_REQUEST *req = &signal.u.MlmeSetTimRequest; + bulk_data_param_t *bulkdata = NULL; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + u8 senderIdLsb = 0; + CsrWifiRouterCtrlStaInfo_t *staRecord = NULL; + u32 oldTimSetStatus = 0, timSetStatus = 0; + + unifi_trace(priv, UDBG5, "entering the update_tim routine\n"); + + + if (handle == 0xFFFFFFFF) { + handle &= CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE; + if (setTim == interfacePriv->bcTimSet) + { + unifi_trace(priv, UDBG3, "update_tim, Drop:Hdl=%x, timval=%d, globalTim=%d\n", handle, setTim, interfacePriv->bcTimSet); + return; + } + } else if ((handle != 0xFFFFFFFF) && (handle >= UNIFI_MAX_CONNECTIONS)) { + unifi_warning(priv, "bad station Handle = %x\n", handle); + return; + } + + if (setTim) { + timSetStatus = CSR_WIFI_TIM_SETTING; + } else { + timSetStatus = CSR_WIFI_TIM_RESETTING; + } + + if (handle != CSR_WIFI_BROADCAST_OR_MULTICAST_HANDLE) { + if ((staRecord = ((CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[handle]))) == NULL) { + unifi_warning(priv, "station record is NULL in update_tim: handle = %x :debug\n", handle); + return; + } + /* In case of signal sending failed, revert back to old state */ + oldTimSetStatus = staRecord->timSet; + staRecord->timSet = timSetStatus; + } + + /* pack senderID LSB */ + senderIdLsb = CSR_WIFI_PACK_SENDER_ID_LSB_FOR_TIM_REQ(handle, timSetStatus); + + /* initialize signal to zero */ + memset(&signal, 0, sizeof(CSR_SIGNAL)); + + /* Frame the MLME-SET-TIM request */ + signal.SignalPrimitiveHeader.SignalId = CSR_MLME_SET_TIM_REQUEST_ID; + signal.SignalPrimitiveHeader.ReceiverProcessId = 0; + CSR_COPY_UINT16_TO_LITTLE_ENDIAN(((priv->netdev_client->sender_id & 0xff00) | senderIdLsb), + (u8*)&signal.SignalPrimitiveHeader.SenderProcessId); + + /* set The virtual interfaceIdentifier, aid, tim value */ + req->VirtualInterfaceIdentifier = uf_get_vif_identifier(interfacePriv->interfaceMode,interfaceTag); + req->AssociationId = aid; + req->TimValue = setTim; + + + unifi_trace(priv, UDBG2, "update_tim:AID %x,senderIdLsb = 0x%x, handle = 0x%x, timSetStatus = %x, sender proceesID = %x \n", + aid,senderIdLsb, handle, timSetStatus, signal.SignalPrimitiveHeader.SenderProcessId); + + /* Send the signal to UniFi */ + r = ul_send_signal_unpacked(priv, &signal, bulkdata); + if (r) { + /* No need to free bulk data, as TIM request doesn't carries any data */ + unifi_error(priv, "Error queueing CSR_MLME_SET_TIM_REQUEST signal\n"); + if (staRecord) { + staRecord->timSet = oldTimSetStatus ; + } + else + { + /* MLME_SET_TIM.req sending failed here for AID0, so revert back our bcTimSet status */ + interfacePriv->bcTimSet = !setTim; + } + } + else { + /* Update tim request pending flag and ensure no more TIM set requests are send + for the same station until TIM confirm is received */ + if (staRecord) { + staRecord->timRequestPendingFlag = TRUE; + } + else + { + /* Update tim request (for AID 0) pending flag and ensure no more DTIM set requests are send + * for the same station until TIM confirm is received + */ + interfacePriv->bcTimSetReqPendingFlag = TRUE; + } + } + unifi_trace(priv, UDBG5, "leaving the update_tim routine\n"); +} + +static +void process_peer_active_transition(unifi_priv_t * priv, + CsrWifiRouterCtrlStaInfo_t *staRecord, + u16 interfaceTag) +{ + int r,i; + u8 spaceAvail[4] = {TRUE,TRUE,TRUE,TRUE}; + tx_buffered_packets_t * buffered_pkt = NULL; + unsigned long lock_flags; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + unifi_trace(priv, UDBG5, "entering process_peer_active_transition\n"); + + if(IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag)) { + /* giving more priority to multicast packets so delaying unicast packets*/ + unifi_trace(priv,UDBG2, "Multicast transmission is going on so resume unicast transmission after DTIM over\n"); + + /* As station is active now, even though AP is not able to send frames to it + * because of DTIM, it needs to reset the TIM here + */ + if (!staRecord->timRequestPendingFlag){ + if((staRecord->timSet == CSR_WIFI_TIM_SET) || (staRecord->timSet == CSR_WIFI_TIM_SETTING)){ + update_tim(priv, staRecord->aid, 0, interfaceTag, staRecord->assignedHandle); + } + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 0; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + return; + } + while((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->mgtFrames))) { + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,0,FALSE)) == -ENOSPC) { + unifi_trace(priv, UDBG2, "p_p_a_t:(ENOSPC) Mgt Frame queueing \n"); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->mgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[3]=(u8)(staRecord->assignedHandle); + spaceAvail[3] = FALSE; + break; + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + if (!staRecord->timRequestPendingFlag) { + if (staRecord->txSuspend) { + if(staRecord->timSet == CSR_WIFI_TIM_SET) { + update_tim(priv,staRecord->aid,0,interfaceTag, staRecord->assignedHandle); + } + return; + } + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 0; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + for(i=3;i>=0;i--) { + if(!spaceAvail[i]) + continue; + unifi_trace(priv, UDBG6, "p_p_a_t:data pkt sending for AC %d \n",i); + while((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->dataPdu[i]))) { + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,0,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->dataPdu[i]); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[i]=(u8)(staRecord->assignedHandle); + break; + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + } + if (!staRecord->timRequestPendingFlag){ + if((staRecord->timSet == CSR_WIFI_TIM_SET) || (staRecord->timSet == CSR_WIFI_TIM_SETTING)) { + unifi_trace(priv, UDBG3, "p_p_a_t:resetting tim .....\n"); + update_tim(priv,staRecord->aid,0,interfaceTag, staRecord->assignedHandle); + } + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 0; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + unifi_trace(priv, UDBG5, "leaving process_peer_active_transition\n"); +} + + + +void uf_process_ma_pkt_cfm_for_ap(unifi_priv_t *priv,u16 interfaceTag, const CSR_MA_PACKET_CONFIRM *pkt_cfm) +{ + netInterface_priv_t *interfacePriv; + u8 i; + CsrWifiRouterCtrlStaInfo_t *staRecord = NULL; + interfacePriv = priv->interfacePriv[interfaceTag]; + + + if(pkt_cfm->HostTag == interfacePriv->multicastPduHostTag) { + unifi_trace(priv,UDBG2,"CFM for marked Multicast Tag = %x\n",interfacePriv->multicastPduHostTag); + interfacePriv->multicastPduHostTag = 0xffffffff; + resume_suspended_uapsd(priv,interfaceTag); + resume_unicast_buffered_frames(priv,interfaceTag); + if(list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames) && + list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)) { + unifi_trace(priv,UDBG1,"Resetting multicastTIM"); + if (!interfacePriv->bcTimSetReqPendingFlag) + { + update_tim(priv,0,CSR_WIFI_TIM_RESET,interfaceTag, 0xFFFFFFFF); + } + else + { + /* Cache the DTimSet value so that it will processed immidiatly after + * completing the current setDTim Request + */ + interfacePriv->bcTimSetReqQueued = CSR_WIFI_TIM_RESET; + unifi_trace(priv, UDBG2, "uf_process_ma_pkt_cfm_for_ap : One more UpdateDTim Request(%d) Queued \n", + interfacePriv->bcTimSetReqQueued); + } + + } + return; + } + + /* Check if it is a Confirm for null data frame used + * for probing station activity + */ + for(i =0; i < UNIFI_MAX_CONNECTIONS; i++) { + staRecord = (CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[i]); + if (staRecord && (staRecord->nullDataHostTag == pkt_cfm->HostTag)) { + + unifi_trace(priv, UDBG1, "CFM for Inactive probe Null frame (tag = %x, status = %d)\n", + pkt_cfm->HostTag, + pkt_cfm->TransmissionStatus + ); + staRecord->nullDataHostTag = INVALID_HOST_TAG; + + if(pkt_cfm->TransmissionStatus == CSR_TX_RETRY_LIMIT){ + CsrTime now; + CsrTime inactive_time; + + unifi_trace(priv, UDBG1, "Nulldata to probe STA ALIVE Failed with retry limit\n"); + /* Recheck if there is some activity after null data is sent. + * + * If still there is no activity then send a disconnected indication + * to SME to delete the station record. + */ + if (staRecord->activity_flag){ + return; + } + now = CsrTimeGet(NULL); + + if (staRecord->lastActivity > now) + { + /* simple timer wrap (for 1 wrap) */ + inactive_time = CsrTimeAdd((CsrTime)CsrTimeSub(CSR_SCHED_TIME_MAX, staRecord->lastActivity), + now); + } + else + { + inactive_time = (CsrTime)CsrTimeSub(now, staRecord->lastActivity); + } + + if (inactive_time >= STA_INACTIVE_TIMEOUT_VAL) + { + struct list_head send_cfm_list; + u8 j; + + /* The SME/NME may be waiting for confirmation for requested frames to this station. + * Though this is --VERY UNLIKELY-- in case of station in active mode. But still as a + * a defensive check, it loops through buffered frames for this station and if confirmation + * is requested, send auto confirmation with failure status. Also flush the frames so + * that these are not processed again in PEER_DEL_REQ handler. + */ + INIT_LIST_HEAD(&send_cfm_list); + + uf_prepare_send_cfm_list_for_queued_pkts(priv, + &send_cfm_list, + &(staRecord->mgtFrames)); + + uf_flush_list(priv, &(staRecord->mgtFrames)); + + for(j = 0; j < MAX_ACCESS_CATOGORY; j++){ + uf_prepare_send_cfm_list_for_queued_pkts(priv, + &send_cfm_list, + &(staRecord->dataPdu[j])); + + uf_flush_list(priv,&(staRecord->dataPdu[j])); + } + + send_auto_ma_packet_confirm(priv, staRecord->interfacePriv, &send_cfm_list); + + + + unifi_warning(priv, "uf_process_ma_pkt_cfm_for_ap: Router Disconnected IND Peer (%x-%x-%x-%x-%x-%x)\n", + staRecord->peerMacAddress.a[0], + staRecord->peerMacAddress.a[1], + staRecord->peerMacAddress.a[2], + staRecord->peerMacAddress.a[3], + staRecord->peerMacAddress.a[4], + staRecord->peerMacAddress.a[5]); + + CsrWifiRouterCtrlConnectedIndSend(priv->CSR_WIFI_SME_IFACEQUEUE, + 0, + staRecord->interfacePriv->InterfaceTag, + staRecord->peerMacAddress, + CSR_WIFI_ROUTER_CTRL_PEER_DISCONNECTED); + } + + } + else if (pkt_cfm->TransmissionStatus == CSR_TX_SUCCESSFUL) + { + staRecord->activity_flag = TRUE; + } + } + } +} + +#endif +u16 uf_get_vif_identifier (CsrWifiRouterCtrlMode mode, u16 tag) +{ + switch(mode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_STA: + case CSR_WIFI_ROUTER_CTRL_MODE_P2PCLI: + return (0x02<<8|tag); + + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + return (0x03<<8|tag); + + case CSR_WIFI_ROUTER_CTRL_MODE_IBSS: + return (0x01<<8|tag); + + case CSR_WIFI_ROUTER_CTRL_MODE_MONITOR: + return (0x04<<8|tag); + case CSR_WIFI_ROUTER_CTRL_MODE_AMP: + return (0x05<<8|tag); + default: + return tag; + } +} + +#ifdef CSR_SUPPORT_SME + +/* + * --------------------------------------------------------------------------- + * update_macheader + * + * + * These functions updates mac header for intra BSS packet + * routing. + * NOTE: This function always has to be called in rx context which + * is in bh thread context since GFP_KERNEL is used. In soft IRQ/ Interrupt + * context shouldn't be used + * + * Arguments: + * priv Pointer to device private context struct + * skb Socket buffer containing data packet to transmit + * newSkb Socket buffer containing data packet + Mac header if no sufficient headroom in skb + * priority to append QOS control header in Mac header + * bulkdata if newSkb allocated then bulkdata updated to send to unifi + * interfaceTag the interfaceID on which activity going on + * macHeaderLengthInBytes no. of bytes of mac header in received frame + * qosDestination used to append Qos control field + * + * Returns: + * Zero on success or -1 on error. + * --------------------------------------------------------------------------- + */ + +static int update_macheader(unifi_priv_t *priv, struct sk_buff *skb, + struct sk_buff *newSkb, CSR_PRIORITY *priority, + bulk_data_param_t *bulkdata, u16 interfaceTag, + u8 macHeaderLengthInBytes, + u8 qosDestination) +{ + + u16 *fc = NULL; + u8 direction = 0, toDs, fromDs; + u8 *bufPtr = NULL; + u8 sa[ETH_ALEN], da[ETH_ALEN]; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + int headroom; + u8 macHeaderBuf[IEEE802_11_DATA_FRAME_MAC_HEADER_SIZE] = {0}; + + unifi_trace(priv, UDBG5, "entering the update_macheader function\n"); + + /* temporary buffer for the Mac header storage */ + memcpy(macHeaderBuf, skb->data, macHeaderLengthInBytes); + + /* remove the Macheader from the skb */ + skb_pull(skb, macHeaderLengthInBytes); + + /* get the skb headroom for skb_push check */ + headroom = skb_headroom(skb); + + /* pointer to frame control field */ + fc = (u16*) macHeaderBuf; + + toDs = (*fc & cpu_to_le16(IEEE802_11_FC_TO_DS_MASK))?1 : 0; + fromDs = (*fc & cpu_to_le16(IEEE802_11_FC_FROM_DS_MASK))? 1: 0; + unifi_trace(priv, UDBG5, "In update_macheader function, fromDs = %x, toDs = %x\n", fromDs, toDs); + direction = ((fromDs | (toDs << 1)) & 0x3); + + /* Address1 or 3 from the macheader */ + memcpy(da, macHeaderBuf+4+toDs*12, ETH_ALEN); + /* Address2, 3 or 4 from the mac header */ + memcpy(sa, macHeaderBuf+10+fromDs*(6+toDs*8), ETH_ALEN); + + unifi_trace(priv, UDBG3, "update_macheader:direction = %x\n", direction); + /* update the toDs, fromDs & address fields in Mac header */ + switch(direction) + { + case 2: + /* toDs = 1 & fromDs = 0 , toAp when frames received from peer + * while sending this packet to Destination the Mac header changed + * as fromDs = 1 & toDs = 0, fromAp + */ + *fc &= cpu_to_le16(~IEEE802_11_FC_TO_DS_MASK); + *fc |= cpu_to_le16(IEEE802_11_FC_FROM_DS_MASK); + /* Address1: MAC address of the actual destination (4 = 2+2) */ + memcpy(macHeaderBuf + 4, da, ETH_ALEN); + /* Address2: The MAC address of the AP (10 = 2+2+6) */ + memcpy(macHeaderBuf + 10, &interfacePriv->bssid, ETH_ALEN); + /* Address3: MAC address of the actual source from mac header (16 = 2+2+6+6) */ + memcpy(macHeaderBuf + 16, sa, ETH_ALEN); + break; + case 3: + unifi_trace(priv, UDBG3, "when both the toDs & fromDS set, NOT SUPPORTED\n"); + break; + default: + unifi_trace(priv, UDBG3, "problem in decoding packet in update_macheader \n"); + return -1; + } + + /* frameType is Data always, Validation is done before calling this function */ + + /* check for the souce station type */ + switch(le16_to_cpu(*fc) & IEEE80211_FC_SUBTYPE_MASK) + { + case IEEE802_11_FC_TYPE_QOS_DATA & IEEE80211_FC_SUBTYPE_MASK: + /* No need to modify the qos control field */ + if (!qosDestination) { + + /* If source Sta is QOS enabled & if this bit set, then HTC is supported by + * peer station & htc field present in macHeader + */ + if (*fc & cpu_to_le16(IEEE80211_FC_ORDER_MASK)) { + /* HT control field present in Mac header + * 6 = sizeof(qosControl) + sizeof(htc) + */ + macHeaderLengthInBytes -= 6; + } else { + macHeaderLengthInBytes -= 2; + } + /* Destination STA is non qos so change subtype to DATA */ + *fc &= cpu_to_le16(~IEEE80211_FC_SUBTYPE_MASK); + *fc |= cpu_to_le16(IEEE802_11_FC_TYPE_DATA); + /* remove the qos control field & HTC(if present). new macHeaderLengthInBytes is less than old + * macHeaderLengthInBytes so no need to verify skb headroom + */ + if (headroom < macHeaderLengthInBytes) { + unifi_trace(priv, UDBG1, " sufficient headroom not there to push updated mac header \n"); + return -1; + } + bufPtr = (u8 *) skb_push(skb, macHeaderLengthInBytes); + + /* update bulk data os_data_ptr */ + bulkdata->d[0].os_data_ptr = skb->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)skb; + bulkdata->d[0].data_length = skb->len; + + } else { + /* pointing to QOS control field */ + u8 qc; + if (*fc & cpu_to_le16(IEEE80211_FC_ORDER_MASK)) { + qc = *((u8*)(macHeaderBuf + (macHeaderLengthInBytes - 4 - 2))); + } else { + qc = *((u8*)(macHeaderBuf + (macHeaderLengthInBytes - 2))); + } + + if ((qc & IEEE802_11_QC_TID_MASK) > 7) { + *priority = 7; + } else { + *priority = qc & IEEE802_11_QC_TID_MASK; + } + + unifi_trace(priv, UDBG1, "Incoming packet priority from QSTA is %x\n", *priority); + + if (headroom < macHeaderLengthInBytes) { + unifi_trace(priv, UDBG3, " sufficient headroom not there to push updated mac header \n"); + return -1; + } + bufPtr = (u8 *) skb_push(skb, macHeaderLengthInBytes); + } + break; + default: + { + bulk_data_param_t data_ptrs; + CsrResult csrResult; + unifi_trace(priv, UDBG5, "normal Data packet, NO QOS \n"); + + if (qosDestination) { + u8 qc = 0; + unifi_trace(priv, UDBG3, "destination is QOS station \n"); + + /* Set Ma-Packet.req UP to UP0 */ + *priority = CSR_QOS_UP0; + + /* prepare the qos control field */ + qc |= CSR_QOS_UP0; + /* no Amsdu is in ap buffer so eosp is left 0 */ + if (da[0] & 0x1) { + /* multicast/broadcast frames, no acknowledgement needed */ + qc |= 1 << 5; + } + + /* update new Mac header Length with 2 = sizeof(qos control) */ + macHeaderLengthInBytes += 2; + + /* received DATA frame but destiantion is QOS station so update subtype to QOS*/ + *fc &= cpu_to_le16(~IEEE80211_FC_SUBTYPE_MASK); + *fc |= cpu_to_le16(IEEE802_11_FC_TYPE_QOS_DATA); + + /* appendQosControlOffset = macHeaderLengthInBytes - 2, since source sta is not QOS */ + macHeaderBuf[macHeaderLengthInBytes - 2] = qc; + /* txopLimit is 0 */ + macHeaderBuf[macHeaderLengthInBytes - 1] = 0; + if (headroom < macHeaderLengthInBytes) { + csrResult = unifi_net_data_malloc(priv, &data_ptrs.d[0], skb->len + macHeaderLengthInBytes); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, " failed to allocate request_data. in update_macheader func\n"); + return -1; + } + newSkb = (struct sk_buff *)(data_ptrs.d[0].os_net_buf_ptr); + newSkb->len = skb->len + macHeaderLengthInBytes; + + memcpy((void*)data_ptrs.d[0].os_data_ptr + macHeaderLengthInBytes, + skb->data, skb->len); + + bulkdata->d[0].os_data_ptr = newSkb->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)newSkb; + bulkdata->d[0].data_length = newSkb->len; + + bufPtr = (u8*)data_ptrs.d[0].os_data_ptr; + + /* The old skb will not be used again */ + kfree_skb(skb); + } else { + /* skb headroom is sufficient to append Macheader */ + bufPtr = (u8*)skb_push(skb, macHeaderLengthInBytes); + bulkdata->d[0].os_data_ptr = skb->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)skb; + bulkdata->d[0].data_length = skb->len; + } + } else { + unifi_trace(priv, UDBG3, "destination is not a QSTA\n"); + if (headroom < macHeaderLengthInBytes) { + csrResult = unifi_net_data_malloc(priv, &data_ptrs.d[0], skb->len + macHeaderLengthInBytes); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, " failed to allocate request_data. in update_macheader func\n"); + return -1; + } + newSkb = (struct sk_buff *)(data_ptrs.d[0].os_net_buf_ptr); + newSkb->len = skb->len + macHeaderLengthInBytes; + + memcpy((void*)data_ptrs.d[0].os_data_ptr + macHeaderLengthInBytes, + skb->data, skb->len); + + bulkdata->d[0].os_data_ptr = newSkb->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)newSkb; + bulkdata->d[0].data_length = newSkb->len; + + bufPtr = (u8*)data_ptrs.d[0].os_data_ptr; + + /* The old skb will not be used again */ + kfree_skb(skb); + } else { + /* skb headroom is sufficient to append Macheader */ + bufPtr = (u8*)skb_push(skb, macHeaderLengthInBytes); + bulkdata->d[0].os_data_ptr = skb->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)skb; + bulkdata->d[0].data_length = skb->len; + } + } + } + } + + /* prepare the complete skb, by pushing the MAC header to the begining of the skb->data */ + unifi_trace(priv, UDBG5, "updated Mac Header: %d \n",macHeaderLengthInBytes); + memcpy(bufPtr, macHeaderBuf, macHeaderLengthInBytes); + + unifi_trace(priv, UDBG5, "leaving the update_macheader function\n"); + return 0; +} +/* + * --------------------------------------------------------------------------- + * uf_ap_process_data_pdu + * + * + * Takes care of intra BSS admission control & routing packets within BSS + * + * Arguments: + * priv Pointer to device private context struct + * skb Socket buffer containing data packet to transmit + * ehdr ethernet header to fetch priority of packet + * srcStaInfo source stations record for connection verification + * packed_signal + * signal_len + * signal MA-PACKET.indication signal + * bulkdata if newSkb allocated then bulkdata updated to send to unifi + * macHeaderLengthInBytes no. of bytes of mac header in received frame + * + * Returns: + * Zero on success(ap processing complete) or -1 if packet also have to be sent to NETDEV. + * --------------------------------------------------------------------------- + */ +int +uf_ap_process_data_pdu(unifi_priv_t *priv, struct sk_buff *skb, + struct ethhdr *ehdr, CsrWifiRouterCtrlStaInfo_t * srcStaInfo, + const CSR_SIGNAL *signal, + bulk_data_param_t *bulkdata, + u8 macHeaderLengthInBytes) +{ + const CSR_MA_PACKET_INDICATION *ind = &(signal->u.MaPacketIndication); + u16 interfaceTag = (ind->VirtualInterfaceIdentifier & 0x00ff); + struct sk_buff *newSkb = NULL; + /* pointer to skb or private skb created using skb_copy() */ + struct sk_buff *skbPtr = skb; + u8 sendToNetdev = FALSE; + u8 qosDestination = FALSE; + CSR_PRIORITY priority = CSR_CONTENTION; + CsrWifiRouterCtrlStaInfo_t *dstStaInfo = NULL; + netInterface_priv_t *interfacePriv; + + unifi_trace(priv, UDBG5, "entering uf_ap_process_data_pdu %d\n",macHeaderLengthInBytes); + /* InterfaceTag validation from MA_PACKET.indication */ + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_trace(priv, UDBG1, "Interface Tag is Invalid in uf_ap_process_data_pdu\n"); + unifi_net_data_free(priv, &bulkdata->d[0]); + return 0; + } + interfacePriv = priv->interfacePriv[interfaceTag]; + + if((interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_P2PGO) && + (interfacePriv->intraBssEnabled == FALSE)) { + unifi_trace(priv, UDBG2, "uf_ap_process_data_pdu:P2P GO intrabssEnabled?= %d\n", interfacePriv->intraBssEnabled); + + /*In P2P GO case, if intraBSS distribution Disabled then don't do IntraBSS routing */ + /* If destination in our BSS then drop otherwise give packet to netdev */ + dstStaInfo = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, ehdr->h_dest, interfaceTag); + if (dstStaInfo) { + unifi_net_data_free(priv, &bulkdata->d[0]); + return 0; + } + /* May be associated P2PCLI trying to send the packets on backbone (Netdev) */ + return -1; + } + + if(!memcmp(ehdr->h_dest, interfacePriv->bssid.a, ETH_ALEN)) { + /* This packet will be given to the TCP/IP stack since this packet is for us(AP) + * No routing needed */ + unifi_trace(priv, UDBG4, "destination address is csr_ap\n"); + return -1; + } + + /* fetch the destination record from staion record database */ + dstStaInfo = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, ehdr->h_dest, interfaceTag); + + /* AP mode processing, & if packet is unicast */ + if(!dstStaInfo) { + if (!(ehdr->h_dest[0] & 0x1)) { + /* destination not in station record & its a unicast packet, so pass the packet to network stack */ + unifi_trace(priv, UDBG3, "unicast frame & destination record not exist, send to netdev proto = %x\n", htons(skb->protocol)); + return -1; + } else { + /* packet is multicast/broadcast */ + /* copy the skb to skbPtr, send skb to netdev & skbPtr to multicast/broad cast list */ + unifi_trace(priv, UDBG5, "skb_copy, in uf_ap_process_data_pdu, protocol = %x\n", htons(skb->protocol)); + skbPtr = skb_copy(skb, GFP_KERNEL); + if(skbPtr == NULL) { + /* We don't have memory to don't send the frame in BSS*/ + unifi_notice(priv, "broacast/multicast frame can't be sent in BSS No memeory: proto = %x\n", htons(skb->protocol)); + return -1; + } + sendToNetdev = TRUE; + } + } else { + + /* validate the Peer & Destination Station record */ + if (uf_process_station_records_for_sending_data(priv, interfaceTag, srcStaInfo, dstStaInfo)) { + unifi_notice(priv, "uf_ap_process_data_pdu: station record validation failed \n"); + interfacePriv->stats.rx_errors++; + unifi_net_data_free(priv, &bulkdata->d[0]); + return 0; + } + } + + /* BroadCast packet received and it's been sent as non QOS packets. + * Since WMM spec not mandates broadcast/multicast to be sent as QOS data only, + * if all Peers are QSTA + */ + if(sendToNetdev) { + /* BroadCast packet and it's been sent as non QOS packets */ + qosDestination = FALSE; + } else if(dstStaInfo && (dstStaInfo->wmmOrQosEnabled == TRUE)) { + qosDestination = TRUE; + } + + unifi_trace(priv, UDBG3, "uf_ap_process_data_pdu QoS destination = %s\n", (qosDestination)? "TRUE": "FALSE"); + + /* packet is allowed to send to unifi, update the Mac header */ + if (update_macheader(priv, skbPtr, newSkb, &priority, bulkdata, interfaceTag, macHeaderLengthInBytes, qosDestination)) { + interfacePriv->stats.rx_errors++; + unifi_notice(priv, "(Packet Drop) failed to update the Mac header in uf_ap_process_data_pdu\n"); + if (sendToNetdev) { + /* Free's the skb_copy(skbPtr) data since packet processing failed */ + bulkdata->d[0].os_data_ptr = skbPtr->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)skbPtr; + bulkdata->d[0].data_length = skbPtr->len; + unifi_net_data_free(priv, &bulkdata->d[0]); + } + return -1; + } + + unifi_trace(priv, UDBG3, "Mac Header updated...calling uf_process_ma_packet_req \n"); + + /* Packet is ready to send to unifi ,transmissionControl = 0x0004, confirmation is not needed for data packets */ + if (uf_process_ma_packet_req(priv, ehdr->h_dest, 0xffffffff, interfaceTag, CSR_NO_CONFIRM_REQUIRED, (CSR_RATE)0,priority, priv->netdev_client->sender_id, bulkdata)) { + if (sendToNetdev) { + unifi_trace(priv, UDBG1, "In uf_ap_process_data_pdu, (Packet Drop) uf_process_ma_packet_req failed. freeing skb_copy data (original data sent to Netdev)\n"); + /* Free's the skb_copy(skbPtr) data since packet processing failed */ + bulkdata->d[0].os_data_ptr = skbPtr->data; + bulkdata->d[0].os_net_buf_ptr = (unsigned char*)skbPtr; + bulkdata->d[0].data_length = skbPtr->len; + unifi_net_data_free(priv, &bulkdata->d[0]); + } else { + /* This free's the skb data */ + unifi_trace(priv, UDBG1, "In uf_ap_process_data_pdu, (Packet Drop). Unicast data so freeing original skb \n"); + unifi_net_data_free(priv, &bulkdata->d[0]); + } + } + unifi_trace(priv, UDBG5, "leaving uf_ap_process_data_pdu\n"); + + if (sendToNetdev) { + /* The packet is multicast/broadcast, so after AP processing packet has to + * be sent to netdev, if peer port state is open + */ + unifi_trace(priv, UDBG4, "Packet will be routed to NetDev\n"); + return -1; + } + /* Ap handled the packet & its a unicast packet, no need to send to netdev */ + return 0; +} + +#endif + +CsrResult uf_process_ma_packet_req(unifi_priv_t *priv, + u8 *peerMacAddress, + CSR_CLIENT_TAG hostTag, + u16 interfaceTag, + CSR_TRANSMISSION_CONTROL transmissionControl, + CSR_RATE TransmitRate, + CSR_PRIORITY priority, + CSR_PROCESS_ID leSenderProcessId, + bulk_data_param_t *bulkdata) +{ + CsrResult status = CSR_RESULT_SUCCESS; + CSR_SIGNAL signal; + int result; +#ifdef CSR_SUPPORT_SME + CsrWifiRouterCtrlStaInfo_t *staRecord = NULL; + const u8 *macHdrLocation = bulkdata->d[0].os_data_ptr; + CsrWifiPacketType pktType; + int frameType = 0; + u8 queuePacketDozing = FALSE; + u32 priority_q; + u16 frmCtrl; + struct list_head * list = NULL; /* List to which buffered PDUs are to be enqueued*/ + u8 setBcTim=FALSE; + netInterface_priv_t *interfacePriv; + u8 requeueOnSamePos = FALSE; + u32 handle = 0xFFFFFFFF; + unsigned long lock_flags; + + unifi_trace(priv, UDBG5, + "entering uf_process_ma_packet_req, peer: %pMF\n", + peerMacAddress); + + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_error(priv, "interfaceTag >= CSR_WIFI_NUM_INTERFACES, interfacetag = %d\n", interfaceTag); + return CSR_RESULT_FAILURE; + } + interfacePriv = priv->interfacePriv[interfaceTag]; + + + /* fetch the station record for corresponding peer mac address */ + if ((staRecord = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, peerMacAddress, interfaceTag))) { + handle = staRecord->assignedHandle; + } + + /* Frame ma-packet.req, this is saved/transmitted depend on queue state */ + unifi_frame_ma_packet_req(priv, priority, TransmitRate, hostTag, + interfaceTag, transmissionControl, leSenderProcessId, + peerMacAddress, &signal); + + /* Since it's common path between STA & AP mode, in case of STA packet + * need not to be queued but in AP case we have to queue PDU's in + * different scenarios + */ + switch(interfacePriv->interfaceMode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + /* For this mode processing done below */ + break; + default: + /* In case of STA/IBSS/P2PCLI/AMP, no checks needed send the packet down & return */ + unifi_trace(priv, UDBG5, "In %s, interface mode is %x \n", __FUNCTION__, interfacePriv->interfaceMode); + if (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_NONE) { + unifi_warning(priv, "In %s, interface mode NONE \n", __FUNCTION__); + } + if ((result = ul_send_signal_unpacked(priv, &signal, bulkdata))) { + status = CSR_RESULT_FAILURE; + } + return status; + } + + /* -----Only AP/P2pGO mode handling falls below----- */ + + /* convert priority to queue */ + priority_q = unifi_frame_priority_to_queue((CSR_PRIORITY) priority); + + /* check the powersave status of the peer */ + if (staRecord && (staRecord->currentPeerState == + CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE)) { + /* Peer is dozing & packet have to be delivered, so buffer the packet & + * update the TIM + */ + queuePacketDozing = TRUE; + } + + /* find the type of frame unicast or mulicast/broadcast */ + if (*peerMacAddress & 0x1) { + /* Multicast/broadCast data are always triggered by vif_availability.ind + * at the DTIM + */ + pktType = CSR_WIFI_MULTICAST_PDU; + } else { + pktType = CSR_WIFI_UNICAST_PDU; + } + + /* Fetch the frame control field from mac header & check for frame type */ + frmCtrl = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(macHdrLocation); + + /* Processing done according to Frame/Packet type */ + frameType = ((frmCtrl & 0x000c) >> FRAME_CONTROL_TYPE_FIELD_OFFSET); + switch(frameType) + { + case IEEE802_11_FRAMETYPE_MANAGEMENT: + + switch(pktType) + { + case CSR_WIFI_UNICAST_PDU: + unifi_trace(priv, UDBG5, "management unicast PDU in uf_process_ma_packet_req \n"); + /* push the packet in to the queue with appropriate mgt list */ + if (!staRecord) { + /* push the packet to the unifi if list is empty (if packet lost how to re-enque) */ + if (list_empty(&interfacePriv->genericMgtFrames)) { +#ifdef CSR_SUPPORT_SME + if(!(IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag))) { +#endif + + unifi_trace(priv, UDBG3, "genericMgtFrames list is empty uf_process_ma_packet_req \n"); + result = ul_send_signal_unpacked(priv, &signal, bulkdata); + /* reque only on ENOSPC */ + if(result == -ENOSPC) { + /* requeue the failed packet to genericMgtFrame with same position */ + unifi_trace(priv, UDBG1, "(ENOSPC) Sending genericMgtFrames Failed so buffering\n"); + list = &interfacePriv->genericMgtFrames; + requeueOnSamePos = TRUE; + } +#ifdef CSR_SUPPORT_SME + }else{ + list = &interfacePriv->genericMgtFrames; + unifi_trace(priv, UDBG3, "genericMgtFrames queue empty and dtim started\n hosttag is 0x%x,\n",signal.u.MaPacketRequest.HostTag); + update_eosp_to_head_of_broadcast_list_head(priv,interfaceTag); + } +#endif + } else { + /* Queue the packet to genericMgtFrame of unifi_priv_t data structure */ + list = &interfacePriv->genericMgtFrames; + unifi_trace(priv, UDBG2, "genericMgtFrames queue not empty\n"); + } + } else { + /* check peer power state */ + if (queuePacketDozing || !list_empty(&staRecord->mgtFrames) || IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag)) { + /* peer is in dozing mode, so queue packet in mgt frame list of station record */ + /*if multicast traffic is going on, buffer the unicast packets*/ + list = &staRecord->mgtFrames; + + unifi_trace(priv, UDBG1, "staRecord->MgtFrames list empty? = %s, handle = %d, queuePacketDozing = %d\n", + (list_empty(&staRecord->mgtFrames))? "YES": "NO", staRecord->assignedHandle, queuePacketDozing); + if(IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag)){ + update_eosp_to_head_of_broadcast_list_head(priv,interfaceTag); + } + + } else { + unifi_trace(priv, UDBG5, "staRecord->mgtFrames list is empty uf_process_ma_packet_req \n"); + result = ul_send_signal_unpacked(priv, &signal, bulkdata); + if(result == -ENOSPC) { + /* requeue the failed packet to staRecord->mgtFrames with same position */ + list = &staRecord->mgtFrames; + requeueOnSamePos = TRUE; + unifi_trace(priv, UDBG1, "(ENOSPC) Sending MgtFrames Failed handle = %d so buffering\n",staRecord->assignedHandle); + priv->pausedStaHandle[0]=(u8)(staRecord->assignedHandle); + } else if (result) { + status = CSR_RESULT_FAILURE; + } + } + } + break; + case CSR_WIFI_MULTICAST_PDU: + unifi_trace(priv, UDBG5, "management multicast/broadcast PDU in uf_process_ma_packet_req 'QUEUE it' \n"); + /* Queue the packet to genericMulticastOrBroadCastMgtFrames of unifi_priv_t data structure + * will be sent when we receive VIF AVAILABILITY from firmware as part of DTIM + */ + + list = &interfacePriv->genericMulticastOrBroadCastMgtFrames; + if((interfacePriv->interfaceMode != CSR_WIFI_ROUTER_CTRL_MODE_IBSS) && + (list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames))) { + setBcTim=TRUE; + } + break; + default: + unifi_error(priv, "condition never meets: packet type unrecognized\n"); + } + break; + case IEEE802_11_FRAMETYPE_DATA: + switch(pktType) + { + case CSR_WIFI_UNICAST_PDU: + unifi_trace(priv, UDBG5, "data unicast PDU in uf_process_ma_packet_req \n"); + /* check peer power state, list status & peer port status */ + if(!staRecord) { + unifi_error(priv, "In %s unicast but staRecord = NULL\n", __FUNCTION__); + return CSR_RESULT_FAILURE; + } else if (queuePacketDozing || isRouterBufferEnabled(priv,priority_q)|| !list_empty(&staRecord->dataPdu[priority_q]) || IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag)) { + /* peer is in dozing mode, so queue packet in mgt frame list of station record */ + /* if multicast traffic is going on, buffet the unicast packets */ + unifi_trace(priv, UDBG2, "Enqueued to staRecord->dataPdu[%d] queuePacketDozing=%d,\ + Buffering enabled = %d \n", priority_q,queuePacketDozing,isRouterBufferEnabled(priv,priority_q)); + list = &staRecord->dataPdu[priority_q]; + } else { + unifi_trace(priv, UDBG5, "staRecord->dataPdu[%d] list is empty uf_process_ma_packet_req \n", priority_q); + /* Pdu allowed to send to unifi */ + result = ul_send_signal_unpacked(priv, &signal, bulkdata); + if(result == -ENOSPC) { + /* requeue the failed packet to staRecord->dataPdu[priority_q] with same position */ + unifi_trace(priv, UDBG1, "(ENOSPC) Sending Unicast DataPDU to queue %d Failed so buffering\n",priority_q); + requeueOnSamePos = TRUE; + list = &staRecord->dataPdu[priority_q]; + priv->pausedStaHandle[priority_q]=(u8)(staRecord->assignedHandle); + if(!isRouterBufferEnabled(priv,priority_q)) { + unifi_error(priv,"Buffering Not enabled for queue %d \n",priority_q); + } + } else if (result) { + status = CSR_RESULT_FAILURE; + } + } + break; + case CSR_WIFI_MULTICAST_PDU: + unifi_trace(priv, UDBG5, "data multicast/broadcast PDU in uf_process_ma_packet_req \n"); + /* Queue the packet to genericMulticastOrBroadCastFrames list of unifi_priv_t data structure + * will be sent when we receive VIF AVAILABILITY from firmware as part of DTIM + */ + list = &interfacePriv->genericMulticastOrBroadCastFrames; + if(list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)) { + setBcTim = TRUE; + } + break; + default: + unifi_error(priv, "condition never meets: packet type un recognized\n"); + } + break; + default: + unifi_error(priv, "unrecognized frame type\n"); + } + if(list) { + status = enque_tx_data_pdu(priv, bulkdata,list, &signal,requeueOnSamePos); + /* Record no. of packet queued for each peer */ + if (staRecord && (pktType == CSR_WIFI_UNICAST_PDU) && (!status)) { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staRecord->noOfPktQueued++; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + else if ((pktType == CSR_WIFI_MULTICAST_PDU) && (!status)) + { + /* If broadcast Tim is set && queuing is successfull, then only update TIM */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + interfacePriv->noOfbroadcastPktQueued++; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + } + /* If broadcast Tim is set && queuing is successfull, then only update TIM */ + if(setBcTim && !status) { + unifi_trace(priv, UDBG3, "tim set due to broadcast pkt\n"); + if (!interfacePriv->bcTimSetReqPendingFlag) + { + update_tim(priv,0,CSR_WIFI_TIM_SET,interfaceTag, handle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + interfacePriv->bcTimSetReqQueued = CSR_WIFI_TIM_SET; + unifi_trace(priv, UDBG2, "uf_process_ma_packet_req : One more UpdateDTim Request(:%d) Queued \n", + interfacePriv->bcTimSetReqQueued); + } + } else if(staRecord && staRecord->currentPeerState == + CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE) { + if(staRecord->timSet == CSR_WIFI_TIM_RESET || staRecord->timSet == CSR_WIFI_TIM_RESETTING) { + if(!staRecord->wmmOrQosEnabled) { + if(!list_empty(&staRecord->mgtFrames) || + !list_empty(&staRecord->dataPdu[3]) || + !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION])) { + unifi_trace(priv, UDBG3, "tim set due to unicast pkt & peer in powersave\n"); + if (!staRecord->timRequestPendingFlag){ + update_tim(priv,staRecord->aid,1,interfaceTag, handle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 1; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + } + } else { + /* Check for non delivery enable(i.e trigger enable), all delivery enable & legacy AC for TIM update in firmware */ + u8 allDeliveryEnabled = 0, dataAvailable = 0; + /* Check if all AC's are Delivery Enabled */ + is_all_ac_deliver_enabled_and_moredata(staRecord, &allDeliveryEnabled, &dataAvailable); + if (uf_is_more_data_for_non_delivery_ac(staRecord) || (allDeliveryEnabled && dataAvailable) + || (!list_empty(&staRecord->mgtFrames))) { + if (!staRecord->timRequestPendingFlag) { + update_tim(priv,staRecord->aid,1,interfaceTag, handle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 1; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + } + } + } + } + + if((list) && (pktType == CSR_WIFI_UNICAST_PDU && !queuePacketDozing) && !(isRouterBufferEnabled(priv,priority_q)) && !(IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag))) { + unifi_trace(priv, UDBG2, "buffering cleared for queue = %d So resending buffered frames\n",priority_q); + uf_send_buffered_frames(priv, priority_q); + } + unifi_trace(priv, UDBG5, "leaving uf_process_ma_packet_req \n"); + return status; +#else +#ifdef CSR_NATIVE_LINUX + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_error(priv, "interfaceTag >= CSR_WIFI_NUM_INTERFACES, interfacetag = %d\n", interfaceTag); + return CSR_RESULT_FAILURE; + } + /* Frame ma-packet.req, this is saved/transmitted depend on queue state */ + unifi_frame_ma_packet_req(priv, priority, TransmitRate, hostTag, interfaceTag, + transmissionControl, leSenderProcessId, + peerMacAddress, &signal); + result = ul_send_signal_unpacked(priv, &signal, bulkdata); + if (result) { + return CSR_RESULT_FAILURE; + } +#endif + return status; +#endif +} + +#ifdef CSR_SUPPORT_SME +s8 uf_get_protection_bit_from_interfacemode(unifi_priv_t *priv, u16 interfaceTag, const u8 *daddr) +{ + s8 protection = 0; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + switch(interfacePriv->interfaceMode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_STA: + case CSR_WIFI_ROUTER_CTRL_MODE_P2PCLI: + case CSR_WIFI_ROUTER_CTRL_MODE_AMP: + case CSR_WIFI_ROUTER_CTRL_MODE_IBSS: + protection = interfacePriv->protect; + break; + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + { + CsrWifiRouterCtrlStaInfo_t *dstStaInfo = NULL; + if (daddr[0] & 0x1) { + unifi_trace(priv, UDBG3, "broadcast/multicast packet in send_ma_pkt_request\n"); + /* In this mode, the protect member of priv structure has an information of how + * AP/P2PGO has started, & the member updated in set mode request for AP/P2PGO + */ + protection = interfacePriv->protect; + } else { + /* fetch the destination record from staion record database */ + dstStaInfo = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, daddr, interfaceTag); + if (!dstStaInfo) { + unifi_trace(priv, UDBG3, "peer not found in station record in send_ma_pkt_request\n"); + return -1; + } + protection = dstStaInfo->protection; + } + } + break; + default: + unifi_trace(priv, UDBG2, "mode unknown in send_ma_pkt_request\n"); + } + return protection; +} +#endif +#ifdef CSR_SUPPORT_SME +u8 send_multicast_frames(unifi_priv_t *priv, u16 interfaceTag) +{ + int r; + tx_buffered_packets_t * buffered_pkt = NULL; + u8 moreData = FALSE; + u8 pduSent =0; + unsigned long lock_flags; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + u32 hostTag = 0xffffffff; + + func_enter(); + if(!isRouterBufferEnabled(priv,UNIFI_TRAFFIC_Q_VO)) { + while((interfacePriv->dtimActive)&& (buffered_pkt=dequeue_tx_data_pdu(priv,&interfacePriv->genericMulticastOrBroadCastMgtFrames))) { + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK); + moreData = (buffered_pkt->transmissionControl & TRANSMISSION_CONTROL_EOSP_MASK)?FALSE:TRUE; + + + unifi_trace(priv,UDBG2,"DTIM Occurred for interface:sending Mgt packet %d\n",interfaceTag); + + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,NULL,moreData,FALSE)) == -ENOSPC) { + unifi_trace(priv,UDBG1,"frame_and_send_queued_pdu failed with ENOSPC for host tag = %x\n", buffered_pkt->hostTag); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &interfacePriv->genericMulticastOrBroadCastMgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + break; + } else { + unifi_trace(priv,UDBG1,"send_multicast_frames: Send genericMulticastOrBroadCastMgtFrames (%x, %x)\n", + buffered_pkt->hostTag, + r); + if(r) { + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + if(!moreData) { + + interfacePriv->dtimActive = FALSE; + if(!r) { + hostTag = buffered_pkt->hostTag; + pduSent++; + } else { + send_vif_availibility_rsp(priv,uf_get_vif_identifier(interfacePriv->interfaceMode,interfaceTag),CSR_RC_UNSPECIFIED_FAILURE); + } + } + /* Buffered frame sent successfully */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + interfacePriv->noOfbroadcastPktQueued--; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + kfree(buffered_pkt); + } + + } + } + if(!isRouterBufferEnabled(priv,UNIFI_TRAFFIC_Q_CONTENTION)) { + while((interfacePriv->dtimActive)&& (buffered_pkt=dequeue_tx_data_pdu(priv,&interfacePriv->genericMulticastOrBroadCastFrames))) { + buffered_pkt->transmissionControl |= TRANSMISSION_CONTROL_TRIGGER_MASK; + moreData = (buffered_pkt->transmissionControl & TRANSMISSION_CONTROL_EOSP_MASK)?FALSE:TRUE; + + + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,NULL,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &interfacePriv->genericMulticastOrBroadCastFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + break; + } else { + if(r) { + unifi_trace(priv,UDBG1,"send_multicast_frames: Send genericMulticastOrBroadCastFrame failed (%x, %x)\n", + buffered_pkt->hostTag, + r); + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + if(!moreData) { + interfacePriv->dtimActive = FALSE; + if(!r) { + pduSent ++; + hostTag = buffered_pkt->hostTag; + } else { + send_vif_availibility_rsp(priv,uf_get_vif_identifier(interfacePriv->interfaceMode,interfaceTag),CSR_RC_UNSPECIFIED_FAILURE); + } + } + /* Buffered frame sent successfully */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + interfacePriv->noOfbroadcastPktQueued--; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + kfree(buffered_pkt); + } + } + } + if((interfacePriv->dtimActive == FALSE)) { + /* Record the host Tag*/ + unifi_trace(priv,UDBG2,"send_multicast_frames: Recorded hostTag of EOSP packet: = 0x%x\n",hostTag); + interfacePriv->multicastPduHostTag = hostTag; + } + return pduSent; +} +#endif +void uf_process_ma_vif_availibility_ind(unifi_priv_t *priv,u8 *sigdata, + u32 siglen) +{ +#ifdef CSR_SUPPORT_SME + CSR_SIGNAL signal; + CSR_MA_VIF_AVAILABILITY_INDICATION *ind; + int r; + u16 interfaceTag; + u8 pduSent =0; + CSR_RESULT_CODE resultCode = CSR_RC_SUCCESS; + netInterface_priv_t *interfacePriv; + + func_enter(); + unifi_trace(priv, UDBG3, + "uf_process_ma_vif_availibility_ind: Process signal 0x%.4X\n", + *((u16*)sigdata)); + + r = read_unpack_signal(sigdata, &signal); + if (r) { + unifi_error(priv, + "uf_process_ma_vif_availibility_ind: Received unknown signal 0x%.4X.\n", + CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata)); + func_exit(); + return; + } + ind = &signal.u.MaVifAvailabilityIndication; + interfaceTag=ind->VirtualInterfaceIdentifier & 0xff; + + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_error(priv, "in vif_availability_ind interfaceTag is wrong\n"); + return; + } + + interfacePriv = priv->interfacePriv[interfaceTag]; + + if(ind->Multicast) { + if(list_empty(&interfacePriv->genericMulticastOrBroadCastFrames) && + list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames)) { + /* This condition can occur because of a potential race where the + TIM is not yet reset as host is waiting for confirm but it is sent + by firmware and DTIM occurs*/ + unifi_notice(priv,"ma_vif_availibility_ind recevied for multicast but queues are empty%d\n",interfaceTag); + send_vif_availibility_rsp(priv,ind->VirtualInterfaceIdentifier,CSR_RC_NO_BUFFERED_BROADCAST_MULTICAST_FRAMES); + interfacePriv->dtimActive = FALSE; + if(interfacePriv->multicastPduHostTag == 0xffffffff) { + unifi_notice(priv,"ma_vif_availibility_ind recevied for multicast but queues are empty%d\n",interfaceTag); + /* This may be an extra request in very rare race conditions but it is fine as it would atleast remove the potential lock up */ + if (!interfacePriv->bcTimSetReqPendingFlag) + { + update_tim(priv,0,CSR_WIFI_TIM_RESET,interfaceTag, 0xFFFFFFFF); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + interfacePriv->bcTimSetReqQueued = CSR_WIFI_TIM_RESET; + unifi_trace(priv, UDBG2, "uf_process_ma_vif_availibility_ind : One more UpdateDTim Request(%d) Queued \n", + interfacePriv->bcTimSetReqQueued); + } + } + return; + } + if(interfacePriv->dtimActive) { + unifi_trace(priv,UDBG2,"DTIM Occurred for already active DTIM interface %d\n",interfaceTag); + return; + } else { + unifi_trace(priv,UDBG2,"DTIM Occurred for interface %d\n",interfaceTag); + if(list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)) { + set_eosp_transmit_ctrl(priv,&interfacePriv->genericMulticastOrBroadCastMgtFrames); + } else { + set_eosp_transmit_ctrl(priv,&interfacePriv->genericMulticastOrBroadCastFrames); + } + } + interfacePriv->dtimActive = TRUE; + pduSent = send_multicast_frames(priv,interfaceTag); + } + else { + unifi_error(priv,"Interface switching is not supported %d\n",interfaceTag); + resultCode = CSR_RC_NOT_SUPPORTED; + send_vif_availibility_rsp(priv,ind->VirtualInterfaceIdentifier,CSR_RC_NOT_SUPPORTED); + } +#endif +} +#ifdef CSR_SUPPORT_SME + +#define GET_ACTIVE_INTERFACE_TAG(priv) 0 + +static u8 uf_is_more_data_for_delivery_ac(unifi_priv_t *priv, CsrWifiRouterCtrlStaInfo_t *staRecord) +{ + s8 i; + + for(i=UNIFI_TRAFFIC_Q_VO; i >= UNIFI_TRAFFIC_Q_BK; i--) + { + if(((staRecord->powersaveMode[i]==CSR_WIFI_AC_DELIVERY_ONLY_ENABLE) + ||(staRecord->powersaveMode[i]==CSR_WIFI_AC_TRIGGER_AND_DELIVERY_ENABLED)) + &&(!list_empty(&staRecord->dataPdu[i]))) { + unifi_trace(priv,UDBG2,"uf_is_more_data_for_delivery_ac: Data Available AC = %d\n", i); + return TRUE; + } + } + + unifi_trace(priv,UDBG2,"uf_is_more_data_for_delivery_ac: Data NOT Available \n"); + return FALSE; +} + +static u8 uf_is_more_data_for_usp_delivery(unifi_priv_t *priv, CsrWifiRouterCtrlStaInfo_t *staRecord, unifi_TrafficQueue queue) +{ + s8 i; + + for(i = queue; i >= UNIFI_TRAFFIC_Q_BK; i--) + { + if(((staRecord->powersaveMode[i]==CSR_WIFI_AC_DELIVERY_ONLY_ENABLE) + ||(staRecord->powersaveMode[i]==CSR_WIFI_AC_TRIGGER_AND_DELIVERY_ENABLED)) + &&(!list_empty(&staRecord->dataPdu[i]))) { + unifi_trace(priv,UDBG2,"uf_is_more_data_for_usp_delivery: Data Available AC = %d\n", i); + return TRUE; + } + } + + unifi_trace(priv,UDBG2,"uf_is_more_data_for_usp_delivery: Data NOT Available \n"); + return FALSE; +} + +/* + * --------------------------------------------------------------------------- + * uf_send_buffered_data_from_delivery_ac + * + * This function takes care of + * -> Parsing the delivery enabled queue & sending frame down to HIP + * -> Setting EOSP=1 when USP to be terminated + * -> Depending on MAX SP length services the USP + * + * NOTE:This function always called from uf_handle_uspframes_delivery(), Dont + * call this function from any other location in code + * + * Arguments: + * priv Pointer to device private context struct + * vif interface specific HIP vif instance + * staInfo peer for which UAPSD to be scheduled + * queue AC from which Data to be sent in USP + * txList access category for processing list + * --------------------------------------------------------------------------- + */ +void uf_send_buffered_data_from_delivery_ac(unifi_priv_t *priv, + CsrWifiRouterCtrlStaInfo_t * staInfo, + u8 queue, + struct list_head *txList) +{ + + u16 interfaceTag = GET_ACTIVE_INTERFACE_TAG(priv); + tx_buffered_packets_t * buffered_pkt = NULL; + unsigned long lock_flags; + u8 eosp=FALSE; + s8 r =0; + u8 moreData = FALSE; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + unifi_trace(priv, UDBG2, "++uf_send_buffered_data_from_delivery_ac, active=%x\n", staInfo->uapsdActive); + + if (queue > UNIFI_TRAFFIC_Q_VO) + { + return; + } + while((buffered_pkt=dequeue_tx_data_pdu(priv, txList))) { + if((IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag))) { + unifi_trace(priv, UDBG2, "uf_send_buffered_data_from_delivery_ac: DTIM Active, suspend UAPSD, staId: 0x%x\n", + staInfo->aid); + + /* Once resume called, the U-APSD delivery operation will resume */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->uspSuspend = TRUE; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + /* re-queueing the packet as DTIM started */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q,txList); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + break; + } + + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + + + if((staInfo->wmmOrQosEnabled == TRUE)&&(staInfo->uapsdActive == TRUE)) { + + buffered_pkt->transmissionControl = TRANSMISSION_CONTROL_TRIGGER_MASK; + + /* Check All delivery enables Ac for more data, because caller of this + * function not aware about last packet + * (First check in moreData fetching helps in draining out Mgt frames Q) + */ + moreData = (!list_empty(txList) || uf_is_more_data_for_usp_delivery(priv, staInfo, queue)); + + if(staInfo->noOfSpFramesSent == (staInfo->maxSpLength - 1)) { + moreData = FALSE; + } + + if(moreData == FALSE) { + eosp = TRUE; + buffered_pkt->transmissionControl = + (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + } + } else { + /* Non QoS and non U-APSD */ + unifi_warning(priv, "uf_send_buffered_data_from_delivery_ac: non U-APSD !!! \n"); + } + + unifi_trace(priv,UDBG2,"uf_send_buffered_data_from_delivery_ac : MoreData:%d, EOSP:%d\n",moreData,eosp); + + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staInfo,moreData,eosp)) == -ENOSPC) { + + unifi_trace(priv, UDBG2, "uf_send_buffered_data_from_delivery_ac: UASPD suspended, ENOSPC in hipQ=%x\n", queue); + + /* Once resume called, the U-APSD delivery operation will resume */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->uspSuspend = TRUE; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q,txList); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[queue]=(u8)(staInfo->assignedHandle); + break; + } else { + if(r){ + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->noOfSpFramesSent++; + if((!moreData) || (staInfo->noOfSpFramesSent == staInfo->maxSpLength)) { + unifi_trace(priv, UDBG2, "uf_send_buffered_data_from_delivery_ac: Terminating USP\n"); + staInfo->uapsdActive = FALSE; + staInfo->uspSuspend = FALSE; + staInfo->noOfSpFramesSent = 0; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + break; + } + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + } + unifi_trace(priv, UDBG2, "--uf_send_buffered_data_from_delivery_ac, active=%x\n", staInfo->uapsdActive); +} + +void uf_send_buffered_data_from_ac(unifi_priv_t *priv, + CsrWifiRouterCtrlStaInfo_t * staInfo, + u8 queue, + struct list_head *txList) +{ + tx_buffered_packets_t * buffered_pkt = NULL; + unsigned long lock_flags; + u8 eosp=FALSE; + u8 moreData = FALSE; + s8 r =0; + + func_enter(); + + unifi_trace(priv,UDBG2,"uf_send_buffered_data_from_ac :\n"); + + while(!isRouterBufferEnabled(priv,queue) && + ((buffered_pkt=dequeue_tx_data_pdu(priv, txList))!=NULL)){ + + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + + unifi_trace(priv,UDBG3,"uf_send_buffered_data_from_ac : MoreData:%d, EOSP:%d\n",moreData,eosp); + + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staInfo,moreData,eosp)) == -ENOSPC) { + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q,txList); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + if(staInfo != NULL){ + priv->pausedStaHandle[queue]=(u8)(staInfo->assignedHandle); + } + unifi_trace(priv,UDBG3," uf_send_buffered_data_from_ac: PDU sending failed .. no space for queue %d \n",queue); + } else { + if(r){ + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + + func_exit(); + +} + +void uf_send_buffered_frames(unifi_priv_t *priv,unifi_TrafficQueue q) +{ + u16 interfaceTag = GET_ACTIVE_INTERFACE_TAG(priv); + u32 startIndex=0,endIndex=0; + CsrWifiRouterCtrlStaInfo_t * staInfo = NULL; + u8 queue; + u8 moreData = FALSE; + + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + if(!((interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_AP) || + (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_P2PGO))) + return; + func_enter(); + + queue = (q<=3)?q:0; + + if(interfacePriv->dtimActive) { + /* this function updates dtimActive*/ + send_multicast_frames(priv,interfaceTag); + if(!interfacePriv->dtimActive) { + moreData = (!list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames) || + !list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)); + if(!moreData) { + if (!interfacePriv->bcTimSetReqPendingFlag) + { + update_tim(priv,0,CSR_WIFI_TIM_RESET,interfaceTag, 0XFFFFFFFF); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + interfacePriv->bcTimSetReqQueued = CSR_WIFI_TIM_RESET; + unifi_trace(priv, UDBG2, "uf_send_buffered_frames : One more UpdateDTim Request(%d) Queued \n", + interfacePriv->bcTimSetReqQueued); + } + } + } else { + moreData = (!list_empty(&interfacePriv->genericMulticastOrBroadCastMgtFrames) || + !list_empty(&interfacePriv->genericMulticastOrBroadCastFrames)); + if(!moreData) { + /* This should never happen but if it happens, we need a way out */ + unifi_error(priv,"ERROR: No More Data but DTIM is active sending Response\n"); + send_vif_availibility_rsp(priv,uf_get_vif_identifier(interfacePriv->interfaceMode,interfaceTag),CSR_RC_NO_BUFFERED_BROADCAST_MULTICAST_FRAMES); + interfacePriv->dtimActive = FALSE; + } + } + func_exit(); + return; + } + if(priv->pausedStaHandle[queue] > 7) { + priv->pausedStaHandle[queue] = 0; + } + + if(queue == UNIFI_TRAFFIC_Q_VO) { + + + unifi_trace(priv,UDBG2,"uf_send_buffered_frames : trying mgt from queue=%d\n",queue); + for(startIndex= 0; startIndex < UNIFI_MAX_CONNECTIONS;startIndex++) { + staInfo = CsrWifiRouterCtrlGetStationRecordFromHandle(priv,startIndex,interfaceTag); + if(!staInfo ) { + continue; + } else if((staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE) + &&(staInfo->uapsdActive == FALSE) ) { + continue; + } + + if((staInfo != NULL)&&(staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE) + &&(staInfo->uapsdActive == FALSE)){ + /*Non-UAPSD case push the management frames out*/ + if(!list_empty(&staInfo->mgtFrames)){ + uf_send_buffered_data_from_ac(priv,staInfo, UNIFI_TRAFFIC_Q_VO, &staInfo->mgtFrames); + } + } + + if(isRouterBufferEnabled(priv,queue)) { + unifi_notice(priv,"uf_send_buffered_frames : No space Left for queue = %d\n",queue); + break; + } + } + /*push generic management frames out*/ + if(!list_empty(&interfacePriv->genericMgtFrames)) { + unifi_trace(priv,UDBG2,"uf_send_buffered_frames : trying generic mgt from queue=%d\n",queue); + uf_send_buffered_data_from_ac(priv,staInfo, UNIFI_TRAFFIC_Q_VO, &interfacePriv->genericMgtFrames); + } + } + + + unifi_trace(priv,UDBG2,"uf_send_buffered_frames : Resume called for Queue=%d\n",queue); + unifi_trace(priv,UDBG2,"uf_send_buffered_frames : start=%d end=%d\n",startIndex,endIndex); + + startIndex = priv->pausedStaHandle[queue]; + endIndex = (startIndex + UNIFI_MAX_CONNECTIONS -1) % UNIFI_MAX_CONNECTIONS; + + while(startIndex != endIndex) { + staInfo = CsrWifiRouterCtrlGetStationRecordFromHandle(priv,startIndex,interfaceTag); + if(!staInfo) { + startIndex ++; + if(startIndex >= UNIFI_MAX_CONNECTIONS) { + startIndex = 0; + } + continue; + } else if((staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE) + &&(staInfo->uapsdActive == FALSE)) { + startIndex ++; + if(startIndex >= UNIFI_MAX_CONNECTIONS) { + startIndex = 0; + } + continue; + } + /* Peer is active or U-APSD is active so send PDUs to the peer */ + unifi_trace(priv,UDBG2,"uf_send_buffered_frames : trying data from queue=%d\n",queue); + + + if((staInfo != NULL)&&(staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE) + &&(staInfo->uapsdActive == FALSE)) { + if(!list_empty(&staInfo->dataPdu[queue])) { + + /*Non-UAPSD case push the AC frames out*/ + uf_send_buffered_data_from_ac(priv, staInfo, queue, (&staInfo->dataPdu[queue])); + } + } + startIndex ++; + if(startIndex >= UNIFI_MAX_CONNECTIONS) { + startIndex = 0; + } + } + if(isRouterBufferEnabled(priv,queue)) { + priv->pausedStaHandle[queue] = endIndex; + } else { + priv->pausedStaHandle[queue] = 0; + } + + /* U-APSD might have stopped because of ENOSPC in lib_hip (pause activity). + * So restart it if U-APSD was active with any of the station + */ + unifi_trace(priv, UDBG4, "csrWifiHipSendBufferedFrames: UAPSD Resume Q=%x\n", queue); + resume_suspended_uapsd(priv, interfaceTag); + func_exit(); +} + + +u8 uf_is_more_data_for_non_delivery_ac(CsrWifiRouterCtrlStaInfo_t *staRecord) +{ + u8 i; + + for(i=0;i<=3;i++) + { + if(((staRecord->powersaveMode[i]==CSR_WIFI_AC_TRIGGER_ONLY_ENABLED) + ||(staRecord->powersaveMode[i]==CSR_WIFI_AC_LEGACY_POWER_SAVE)) + &&(!list_empty(&staRecord->dataPdu[i]))){ + + return TRUE; + } + } + + if(((staRecord->powersaveMode[UNIFI_TRAFFIC_Q_VO]==CSR_WIFI_AC_TRIGGER_ONLY_ENABLED) + ||(staRecord->powersaveMode[UNIFI_TRAFFIC_Q_VO]==CSR_WIFI_AC_LEGACY_POWER_SAVE)) + &&(!list_empty(&staRecord->mgtFrames))){ + + return TRUE; + } + + + + return FALSE; +} + + +int uf_process_station_records_for_sending_data(unifi_priv_t *priv,u16 interfaceTag, + CsrWifiRouterCtrlStaInfo_t *srcStaInfo, + CsrWifiRouterCtrlStaInfo_t *dstStaInfo) +{ + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + unifi_trace(priv, UDBG5, "entering uf_process_station_records_for_sending_data\n"); + + if (srcStaInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_DISCONNECTED) { + unifi_error(priv, "Peer State not connected AID = %x, handle = %x, control port state = %x\n", + srcStaInfo->aid, srcStaInfo->assignedHandle, srcStaInfo->peerControlledPort->port_action); + return -1; + } + switch (interfacePriv->interfaceMode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + unifi_trace(priv, UDBG5, "mode is AP/P2PGO\n"); + break; + default: + unifi_warning(priv, "mode is nor AP neither P2PGO, packet cant be xmit\n"); + return -1; + } + + switch(dstStaInfo->peerControlledPort->port_action) + { + case CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_DISCARD: + case CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_CLOSED_BLOCK: + unifi_trace(priv, UDBG5, "destination port is closed/blocked, discarding the packet\n"); + return -1; + default: + unifi_trace(priv, UDBG5, "destination port state is open\n"); + } + + /* port state is open, destination station record is valid, Power save state is + * validated in uf_process_ma_packet_req function + */ + unifi_trace(priv, UDBG5, "leaving uf_process_station_records_for_sending_data\n"); + return 0; +} + + +/* + * --------------------------------------------------------------------------- + * uf_handle_uspframes_delivery + * + * This function takes care of handling USP session for peer, when + * -> trigger frame from peer + * -> suspended USP to be processed (resumed) + * + * NOTE: uf_send_buffered_data_from_delivery_ac() always called from this function, Dont + * make a direct call to uf_send_buffered_data_from_delivery_ac() from any other part of + * code + * + * Arguments: + * priv Pointer to device private context struct + * staInfo peer for which UAPSD to be scheduled + * interfaceTag virtual interface tag + * --------------------------------------------------------------------------- + */ +static void uf_handle_uspframes_delivery(unifi_priv_t * priv, CsrWifiRouterCtrlStaInfo_t *staInfo, u16 interfaceTag) +{ + + s8 i; + u8 allDeliveryEnabled = 0, dataAvailable = 0; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + unsigned long lock_flags; + + unifi_trace(priv, UDBG2, " ++ uf_handle_uspframes_delivery, uapsd active=%x, suspended?=%x\n", + staInfo->uapsdActive, staInfo->uspSuspend); + + /* Check for Buffered frames according to priority order & deliver it + * 1. AC_VO delivery enable & Mgt frames available + * 2. Process remaining Ac's from order AC_VO to AC_BK + */ + + /* USP initiated by WMMPS enabled peer & SET the status flag to TRUE */ + if (!staInfo->uspSuspend && staInfo->uapsdActive) + { + unifi_notice(priv, "uf_handle_uspframes_delivery: U-APSD already active! STA=%x:%x:%x:%x:%x:%x\n", + staInfo->peerMacAddress.a[0], staInfo->peerMacAddress.a[1], + staInfo->peerMacAddress.a[2], staInfo->peerMacAddress.a[3], + staInfo->peerMacAddress.a[4], staInfo->peerMacAddress.a[5]); + return; + } + + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->uapsdActive = TRUE; + staInfo->uspSuspend = FALSE; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + if(((staInfo->powersaveMode[UNIFI_TRAFFIC_Q_VO]==CSR_WIFI_AC_TRIGGER_AND_DELIVERY_ENABLED)|| + (staInfo->powersaveMode[UNIFI_TRAFFIC_Q_VO]==CSR_WIFI_AC_DELIVERY_ONLY_ENABLE)) + && (!list_empty(&staInfo->mgtFrames))) { + + /* Management queue has data && UNIFI_TRAFFIC_Q_VO is delivery enable */ + unifi_trace(priv, UDBG4, "uf_handle_uspframes_delivery: Sending buffered management frames\n"); + uf_send_buffered_data_from_delivery_ac(priv, staInfo, UNIFI_TRAFFIC_Q_VO, &staInfo->mgtFrames); + } + + if (!uf_is_more_data_for_delivery_ac(priv, staInfo)) { + /* All delivery enable AC's are empty, so QNULL to be sent to terminate the USP + * NOTE: If we have sent Mgt frame also, we must send QNULL followed to terminate USP + */ + if (!staInfo->uspSuspend) { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->uapsdActive = FALSE; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + unifi_trace(priv, UDBG2, "uf_handle_uspframes_delivery: sending QNull for trigger\n"); + uf_send_qos_null(priv, interfaceTag, staInfo->peerMacAddress.a, (CSR_PRIORITY) staInfo->triggerFramePriority, staInfo); + staInfo->triggerFramePriority = CSR_QOS_UP0; + } else { + unifi_trace(priv, UDBG2, "uf_handle_uspframes_delivery: MgtQ xfer suspended\n"); + } + } else { + for(i = UNIFI_TRAFFIC_Q_VO; i >= UNIFI_TRAFFIC_Q_BK; i--) { + if(((staInfo->powersaveMode[i]==CSR_WIFI_AC_DELIVERY_ONLY_ENABLE) + ||(staInfo->powersaveMode[i]==CSR_WIFI_AC_TRIGGER_AND_DELIVERY_ENABLED)) + && (!list_empty(&staInfo->dataPdu[i]))) { + /* Deliver Data according to AC priority (from VO to BK) as part of USP */ + unifi_trace(priv, UDBG4, "uf_handle_uspframes_delivery: Buffered data frames from Queue (%d) for USP\n", i); + uf_send_buffered_data_from_delivery_ac(priv, staInfo, i, &staInfo->dataPdu[i]); + } + + if ((!staInfo->uapsdActive) || + (staInfo->uspSuspend && IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag))) { + /* If DTIM active found on one AC, No need to parse the remaining AC's + * as USP suspended. Break out of loop + */ + unifi_trace(priv, UDBG2, "uf_handle_uspframes_delivery: suspend=%x, DTIM=%x, USP terminated=%s\n", + staInfo->uspSuspend, IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag), + staInfo->uapsdActive?"NO":"YES"); + break; + } + } + } + + /* Depending on the USP status, update the TIM accordingly for delivery enabled AC only + * (since we are not manipulating any Non-delivery list(AC)) + */ + is_all_ac_deliver_enabled_and_moredata(staInfo, &allDeliveryEnabled, &dataAvailable); + if ((allDeliveryEnabled && !dataAvailable)) { + if ((staInfo->timSet != CSR_WIFI_TIM_RESET) || (staInfo->timSet != CSR_WIFI_TIM_RESETTING)) { + staInfo->updateTimReqQueued = (u8) CSR_WIFI_TIM_RESET; + unifi_trace(priv, UDBG4, " --uf_handle_uspframes_delivery, UAPSD timset\n"); + if (!staInfo->timRequestPendingFlag) { + update_tim(priv, staInfo->aid, 0, interfaceTag, staInfo->assignedHandle); + } + } + } + unifi_trace(priv, UDBG2, " --uf_handle_uspframes_delivery, uapsd active=%x, suspend?=%x\n", + staInfo->uapsdActive, staInfo->uspSuspend); +} + +void uf_process_wmm_deliver_ac_uapsd(unifi_priv_t * priv, + CsrWifiRouterCtrlStaInfo_t * srcStaInfo, + u16 qosControl, + u16 interfaceTag) +{ + CSR_PRIORITY priority; + unifi_TrafficQueue priority_q; + unsigned long lock_flags; + + unifi_trace(priv, UDBG2, "++uf_process_wmm_deliver_ac_uapsd: uapsdactive?=%x\n", srcStaInfo->uapsdActive); + /* If recceived Frames trigger Frame and Devlivery enabled AC has data + * then transmit from High priorty delivery enabled AC + */ + priority = (CSR_PRIORITY)(qosControl & IEEE802_11_QC_TID_MASK); + priority_q = unifi_frame_priority_to_queue((CSR_PRIORITY) priority); + + if((srcStaInfo->powersaveMode[priority_q]==CSR_WIFI_AC_TRIGGER_ONLY_ENABLED) + ||(srcStaInfo->powersaveMode[priority_q]==CSR_WIFI_AC_TRIGGER_AND_DELIVERY_ENABLED)) { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + srcStaInfo->triggerFramePriority = priority; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + unifi_trace(priv, UDBG2, "uf_process_wmm_deliver_ac_uapsd: trigger frame, Begin U-APSD, triggerQ=%x\n", priority_q); + uf_handle_uspframes_delivery(priv, srcStaInfo, interfaceTag); + } + unifi_trace(priv, UDBG2, "--uf_process_wmm_deliver_ac_uapsd: uapsdactive?=%x\n", srcStaInfo->uapsdActive); +} + + +void uf_send_qos_null(unifi_priv_t * priv,u16 interfaceTag, const u8 *da,CSR_PRIORITY priority,CsrWifiRouterCtrlStaInfo_t * srcStaInfo) +{ + bulk_data_param_t bulkdata; + CsrResult csrResult; + struct sk_buff *skb, *newSkb = NULL; + CsrWifiMacAddress peerAddress; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + CSR_TRANSMISSION_CONTROL transmissionControl = (TRANSMISSION_CONTROL_EOSP_MASK | TRANSMISSION_CONTROL_TRIGGER_MASK); + int r; + CSR_SIGNAL signal; + u32 priority_q; + CSR_RATE transmitRate = 0; + + + func_enter(); + /* Send a Null Frame to Peer, + * 32= size of mac header */ + csrResult = unifi_net_data_malloc(priv, &bulkdata.d[0], MAC_HEADER_SIZE + QOS_CONTROL_HEADER_SIZE); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, " failed to allocate request_data. in uf_send_qos_null func\n"); + return ; + } + skb = (struct sk_buff *)(bulkdata.d[0].os_net_buf_ptr); + skb->len = 0; + bulkdata.d[0].os_data_ptr = skb->data; + bulkdata.d[0].os_net_buf_ptr = (unsigned char*)skb; + bulkdata.d[0].net_buf_length = bulkdata.d[0].data_length = skb->len; + bulkdata.d[1].os_data_ptr = NULL; + bulkdata.d[1].os_net_buf_ptr = NULL; + bulkdata.d[1].net_buf_length = bulkdata.d[1].data_length = 0; + + /* For null frames protection bit should not be set in MAC header, so passing value 0 below for protection field */ + + if (prepare_and_add_macheader(priv, skb, newSkb, priority, &bulkdata, interfaceTag, da, interfacePriv->bssid.a, 0)) { + unifi_error(priv, "failed to create MAC header\n"); + unifi_net_data_free(priv, &bulkdata.d[0]); + return; + } + memcpy(peerAddress.a, ((u8 *) bulkdata.d[0].os_data_ptr) + 4, ETH_ALEN); + /* convert priority to queue */ + priority_q = unifi_frame_priority_to_queue((CSR_PRIORITY) priority); + + /* Frame ma-packet.req, this is saved/transmitted depend on queue state + * send the null frame at data rate of 1 Mb/s for AP or 6 Mb/s for P2PGO + */ + switch (interfacePriv->interfaceMode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + transmitRate = 2; + break; + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + transmitRate = 12; + break; + default: + transmitRate = 0; + } + unifi_frame_ma_packet_req(priv, priority, transmitRate, 0xffffffff, interfaceTag, + transmissionControl, priv->netdev_client->sender_id, + peerAddress.a, &signal); + + r = ul_send_signal_unpacked(priv, &signal, &bulkdata); + if(r) { + unifi_error(priv, "failed to send QOS data null packet result: %d\n",r); + unifi_net_data_free(priv, &bulkdata.d[0]); + } + + func_exit(); + return; + +} +void uf_send_nulldata(unifi_priv_t * priv,u16 interfaceTag, const u8 *da,CSR_PRIORITY priority,CsrWifiRouterCtrlStaInfo_t * srcStaInfo) +{ + bulk_data_param_t bulkdata; + CsrResult csrResult; + struct sk_buff *skb, *newSkb = NULL; + CsrWifiMacAddress peerAddress; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + CSR_TRANSMISSION_CONTROL transmissionControl = 0; + int r; + CSR_SIGNAL signal; + u32 priority_q; + CSR_RATE transmitRate = 0; + CSR_MA_PACKET_REQUEST *req = &signal.u.MaPacketRequest; + unsigned long lock_flags; + + func_enter(); + /* Send a Null Frame to Peer, size = 24 for MAC header */ + csrResult = unifi_net_data_malloc(priv, &bulkdata.d[0], MAC_HEADER_SIZE); + + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_error(priv, "uf_send_nulldata: Failed to allocate memory for NULL frame\n"); + return ; + } + skb = (struct sk_buff *)(bulkdata.d[0].os_net_buf_ptr); + skb->len = 0; + bulkdata.d[0].os_data_ptr = skb->data; + bulkdata.d[0].os_net_buf_ptr = (unsigned char*)skb; + bulkdata.d[0].net_buf_length = bulkdata.d[0].data_length = skb->len; + bulkdata.d[1].os_data_ptr = NULL; + bulkdata.d[1].os_net_buf_ptr = NULL; + bulkdata.d[1].net_buf_length = bulkdata.d[1].data_length = 0; + + /* For null frames protection bit should not be set in MAC header, so passing value 0 below for protection field */ + if (prepare_and_add_macheader(priv, skb, newSkb, priority, &bulkdata, interfaceTag, da, interfacePriv->bssid.a, 0)) { + unifi_error(priv, "uf_send_nulldata: Failed to create MAC header\n"); + unifi_net_data_free(priv, &bulkdata.d[0]); + return; + } + memcpy(peerAddress.a, ((u8 *) bulkdata.d[0].os_data_ptr) + 4, ETH_ALEN); + /* convert priority to queue */ + priority_q = unifi_frame_priority_to_queue((CSR_PRIORITY) priority); + transmissionControl &= ~(CSR_NO_CONFIRM_REQUIRED); + + /* Frame ma-packet.req, this is saved/transmitted depend on queue state + * send the null frame at data rate of 1 Mb/s for AP or 6 Mb/s for P2PGO + */ + switch (interfacePriv->interfaceMode) + { + case CSR_WIFI_ROUTER_CTRL_MODE_AP: + transmitRate = 2; + break; + case CSR_WIFI_ROUTER_CTRL_MODE_P2PGO: + transmitRate = 12; + break; + default: + transmitRate = 0; + } + unifi_frame_ma_packet_req(priv, priority, transmitRate, INVALID_HOST_TAG, interfaceTag, + transmissionControl, priv->netdev_client->sender_id, + peerAddress.a, &signal); + + /* Save host tag to check the status on reception of MA packet confirm */ + srcStaInfo->nullDataHostTag = req->HostTag; + unifi_trace(priv, UDBG1, "uf_send_nulldata: STA AID = %d hostTag = %x\n", srcStaInfo->aid, req->HostTag); + + r = ul_send_signal_unpacked(priv, &signal, &bulkdata); + + if(r == -ENOSPC) { + unifi_trace(priv, UDBG1, "uf_send_nulldata: ENOSPC Requeue the Null frame\n"); + enque_tx_data_pdu(priv, &bulkdata, &srcStaInfo->dataPdu[priority_q], &signal, 1); + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + srcStaInfo->noOfPktQueued++; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + + } + if(r && r != -ENOSPC){ + unifi_error(priv, "uf_send_nulldata: Failed to send Null frame Error = %d\n",r); + unifi_net_data_free(priv, &bulkdata.d[0]); + srcStaInfo->nullDataHostTag = INVALID_HOST_TAG; + } + + func_exit(); + return; +} + +u8 uf_check_broadcast_bssid(unifi_priv_t *priv, const bulk_data_param_t *bulkdata) +{ + u8 *bssid = NULL; + static const CsrWifiMacAddress broadcast_address = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}}; + u8 toDs, fromDs; + + toDs = (((bulkdata->d[0].os_data_ptr)[1]) & 0x01) ? 1 : 0; + fromDs =(((bulkdata->d[0].os_data_ptr)[1]) & 0x02) ? 1 : 0; + + if (toDs && fromDs) + { + unifi_trace(priv, UDBG6, "Address 4 present, Don't try to find BSSID\n"); + bssid = NULL; + } + else if((toDs == 0) && (fromDs ==0)) + { + /* BSSID is Address 3 */ + bssid = (u8 *) (bulkdata->d[0].os_data_ptr + 4 + (2 * ETH_ALEN)); + } + else if(toDs) + { + /* BSSID is Address 1 */ + bssid = (u8 *) (bulkdata->d[0].os_data_ptr + 4); + } + else if(fromDs) + { + /* BSSID is Address 2 */ + bssid = (u8 *) (bulkdata->d[0].os_data_ptr + 4 + ETH_ALEN); + } + + if (memcmp(broadcast_address.a, bssid, ETH_ALEN)== 0) + { + return TRUE; + } + else + { + return FALSE; + } +} + + +u8 uf_process_pm_bit_for_peer(unifi_priv_t * priv, CsrWifiRouterCtrlStaInfo_t * srcStaInfo, + u8 pmBit,u16 interfaceTag) +{ + u8 moreData = FALSE; + u8 powerSaveChanged = FALSE; + unsigned long lock_flags; + + unifi_trace(priv, UDBG3, "entering uf_process_pm_bit_for_peer\n"); + if (pmBit) { + priv->allPeerDozing |= (0x01 << (srcStaInfo->assignedHandle)); + } else { + priv->allPeerDozing &= ~(0x01 << (srcStaInfo->assignedHandle)); + } + if(pmBit) { + if(srcStaInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE) { + + /* disable the preemption */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + srcStaInfo->currentPeerState =CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE; + powerSaveChanged = TRUE; + /* enable the preemption */ + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } else { + return powerSaveChanged; + } + } else { + if(srcStaInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE) { + /* disable the preemption */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + srcStaInfo->currentPeerState = CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE; + powerSaveChanged = TRUE; + /* enable the preemption */ + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + }else { + return powerSaveChanged; + } + } + + + if(srcStaInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE) { + unifi_trace(priv,UDBG3, "Peer with AID = %d is active now\n",srcStaInfo->aid); + process_peer_active_transition(priv,srcStaInfo,interfaceTag); + } else { + unifi_trace(priv,UDBG3, "Peer with AID = %d is in PS Now\n",srcStaInfo->aid); + /* Set TIM if needed */ + if(!srcStaInfo->wmmOrQosEnabled) { + moreData = (!list_empty(&srcStaInfo->mgtFrames) || + !list_empty(&srcStaInfo->dataPdu[UNIFI_TRAFFIC_Q_VO])|| + !list_empty(&srcStaInfo->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION])); + if(moreData && (srcStaInfo->timSet == CSR_WIFI_TIM_RESET)) { + unifi_trace(priv, UDBG3, "This condition should not occur\n"); + if (!srcStaInfo->timRequestPendingFlag){ + update_tim(priv,srcStaInfo->aid,1,interfaceTag, srcStaInfo->assignedHandle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + srcStaInfo->updateTimReqQueued = 1; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", srcStaInfo->updateTimReqQueued, + srcStaInfo->aid); + } + + } + } else { + u8 allDeliveryEnabled = 0, dataAvailable = 0; + unifi_trace(priv, UDBG5, "Qos in AP Mode\n"); + /* Check if all AC's are Delivery Enabled */ + is_all_ac_deliver_enabled_and_moredata(srcStaInfo, &allDeliveryEnabled, &dataAvailable); + /*check for more data in non-delivery enabled queues*/ + moreData = (uf_is_more_data_for_non_delivery_ac(srcStaInfo) || (allDeliveryEnabled && dataAvailable)); + + if(moreData && (srcStaInfo->timSet == CSR_WIFI_TIM_RESET)) { + if (!srcStaInfo->timRequestPendingFlag){ + update_tim(priv,srcStaInfo->aid,1,interfaceTag, srcStaInfo->assignedHandle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + srcStaInfo->updateTimReqQueued = 1; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", srcStaInfo->updateTimReqQueued, + srcStaInfo->aid); + } + } + } + } + unifi_trace(priv, UDBG3, "leaving uf_process_pm_bit_for_peer\n"); + return powerSaveChanged; +} + + + +void uf_process_ps_poll(unifi_priv_t *priv,u8* sa,u8* da,u8 pmBit,u16 interfaceTag) +{ + CsrWifiRouterCtrlStaInfo_t *staRecord = + CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, sa, interfaceTag); + tx_buffered_packets_t * buffered_pkt = NULL; + CsrWifiMacAddress peerMacAddress; + unsigned long lock_flags; + s8 r =0; + u8 moreData = FALSE; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + + unifi_trace(priv, UDBG3, "entering uf_process_ps_poll\n"); + if(!staRecord) { + memcpy(peerMacAddress.a,sa,ETH_ALEN); + unifi_trace(priv, UDBG3, "In uf_process_ps_poll, sta record not found:unexpected frame addr = %x:%x:%x:%x:%x:%x\n", + sa[0], sa[1],sa[2], sa[3], sa[4],sa[5]); + CsrWifiRouterCtrlUnexpectedFrameIndSend(priv->CSR_WIFI_SME_IFACEQUEUE,0,interfaceTag,peerMacAddress); + return; + } + + uf_process_pm_bit_for_peer(priv,staRecord,pmBit,interfaceTag); + + /* Update station last activity time */ + staRecord->activity_flag = TRUE; + + /* This should not change the PM bit as PS-POLL has PM bit always set */ + if(!pmBit) { + unifi_notice (priv," PM bit reset in PS-POLL\n"); + return; + } + + if(IS_DTIM_ACTIVE(interfacePriv->dtimActive,interfacePriv->multicastPduHostTag)) { + /* giving more priority to multicast packets so dropping ps-poll*/ + unifi_notice (priv," multicast transmission is going on so don't take action on PS-POLL\n"); + return; + } + + if(!staRecord->wmmOrQosEnabled) { + if((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->mgtFrames))) { + buffered_pkt->transmissionControl |= TRANSMISSION_CONTROL_TRIGGER_MASK; + moreData = (!list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]) || + !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO]) || + !list_empty(&staRecord->mgtFrames)); + + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->mgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + unifi_trace(priv, UDBG1, "(ENOSPC) PS-POLL received : PDU sending failed \n"); + priv->pausedStaHandle[3]=(u8)(staRecord->assignedHandle); + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } else if((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO]))) { + buffered_pkt->transmissionControl |= TRANSMISSION_CONTROL_TRIGGER_MASK; + moreData = (!list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]) || + !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO])); + + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO]); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[3]=(u8)(staRecord->assignedHandle); + unifi_trace(priv, UDBG1, "(ENOSPC) PS-POLL received : PDU sending failed \n"); + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } else if((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]))) { + buffered_pkt->transmissionControl |= TRANSMISSION_CONTROL_TRIGGER_MASK; + moreData = !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]); + + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[0]=(u8)(staRecord->assignedHandle); + unifi_trace(priv, UDBG1, "(ENOSPC) PS-POLL received : PDU sending failed \n"); + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } else { + /* Actually since we have sent an ACK, there + * there is no need to send a NULL frame*/ + } + moreData = (!list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_VO]) || + !list_empty(&staRecord->dataPdu[UNIFI_TRAFFIC_Q_CONTENTION]) || + !list_empty(&staRecord->mgtFrames)); + if(!moreData && (staRecord->timSet == CSR_WIFI_TIM_SET)) { + unifi_trace(priv, UDBG3, "more data = NULL, set tim to 0 in uf_process_ps_poll\n"); + if (!staRecord->timRequestPendingFlag){ + update_tim(priv,staRecord->aid,0,interfaceTag, staRecord->assignedHandle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 0; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + } + } else { + + u8 allDeliveryEnabled = 0, dataAvailable = 0; + unifi_trace(priv, UDBG3,"Qos Support station.Processing PS-Poll\n"); + + /*Send Data From Management Frames*/ + /* Priority orders for delivering the buffered packets are + * 1. Deliver the Management frames if there + * 2. Other access catagory frames which are non deliver enable including UNIFI_TRAFFIC_Q_VO + * priority is from VO->BK + */ + + /* Check if all AC's are Delivery Enabled */ + is_all_ac_deliver_enabled_and_moredata(staRecord, &allDeliveryEnabled, &dataAvailable); + + if (allDeliveryEnabled) { + unifi_trace(priv, UDBG3, "uf_process_ps_poll: All ACs are delivery enable so Sending QOS Null in response of Ps-poll\n"); + uf_send_qos_null(priv,interfaceTag,sa,CSR_QOS_UP0,staRecord); + return; + } + + if (!list_empty(&staRecord->mgtFrames)) { + if ((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->mgtFrames))) { + /* We dont have packets in non delivery enabled UNIFI_TRAFFIC_Q_VO, So we are looking in management + * queue of the station record + */ + moreData = uf_is_more_data_for_non_delivery_ac(staRecord); + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + + /* Last parameter is EOSP & its false always for PS-POLL processing */ + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->mgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[0]=(u8)(staRecord->assignedHandle); + unifi_trace(priv, UDBG1, "(ENOSPC) PS-POLL received : PDU sending failed \n"); + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } else { + unifi_error(priv, "uf_process_ps_poll: Mgt frame list empty!! \n"); + } + + } else { + s8 i; + /* We dont have buffered packet in mangement frame queue (1 failed), So proceed with condition 2 + * UNIFI_TRAFFIC_Q_VO -> VI -> BE -> BK + */ + for(i= 3; i>=0; i--) { + if (!IS_DELIVERY_ENABLED(staRecord->powersaveMode[i])) { + /* Send One packet, if queue is NULL then continue */ + if((buffered_pkt=dequeue_tx_data_pdu(priv, &staRecord->dataPdu[i]))) { + moreData = uf_is_more_data_for_non_delivery_ac(staRecord); + + buffered_pkt->transmissionControl |= (TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + + /* Last parameter is EOSP & its false always for PS-POLL processing */ + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staRecord,moreData,FALSE)) == -ENOSPC) { + /* Clear the trigger bit transmission control*/ + buffered_pkt->transmissionControl &= ~(TRANSMISSION_CONTROL_TRIGGER_MASK | TRANSMISSION_CONTROL_EOSP_MASK); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staRecord->dataPdu[i]); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[0]=(u8)(staRecord->assignedHandle); + unifi_trace(priv, UDBG1, "(ENOSPC) PS-POLL received : PDU sending failed \n"); + } else { + if(r) { + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + break; + } + } + } + } + /* Check if all AC's are Delivery Enabled */ + is_all_ac_deliver_enabled_and_moredata(staRecord, &allDeliveryEnabled, &dataAvailable); + /*check for more data in non-delivery enabled queues*/ + moreData = (uf_is_more_data_for_non_delivery_ac(staRecord) || (allDeliveryEnabled && dataAvailable)); + if(!moreData && (staRecord->timSet == CSR_WIFI_TIM_SET)) { + unifi_trace(priv, UDBG3, "more data = NULL, set tim to 0 in uf_process_ps_poll\n"); + if (!staRecord->timRequestPendingFlag){ + update_tim(priv,staRecord->aid,0,interfaceTag, staRecord->assignedHandle); + } + else + { + /* Cache the TimSet value so that it will processed immidiatly after + * completing the current setTim Request + */ + staRecord->updateTimReqQueued = 0; + unifi_trace(priv, UDBG6, "update_tim : One more UpdateTim Request (Tim value:%d) Queued for AID %x\n", staRecord->updateTimReqQueued, + staRecord->aid); + } + + } + } + + unifi_trace(priv, UDBG3, "leaving uf_process_ps_poll\n"); +} + + + +void add_to_send_cfm_list(unifi_priv_t * priv, + tx_buffered_packets_t *tx_q_item, + struct list_head *frames_need_cfm_list) +{ + tx_buffered_packets_t *send_cfm_list_item = NULL; + + send_cfm_list_item = (tx_buffered_packets_t *) kmalloc(sizeof(tx_buffered_packets_t), GFP_ATOMIC); + + if(send_cfm_list_item == NULL){ + unifi_warning(priv, "%s: Failed to allocate memory for new list item \n"); + return; + } + + INIT_LIST_HEAD(&send_cfm_list_item->q); + + send_cfm_list_item->hostTag = tx_q_item->hostTag; + send_cfm_list_item->interfaceTag = tx_q_item->interfaceTag; + send_cfm_list_item->transmissionControl = tx_q_item->transmissionControl; + send_cfm_list_item->leSenderProcessId = tx_q_item->leSenderProcessId; + send_cfm_list_item->rate = tx_q_item->rate; + memcpy(send_cfm_list_item->peerMacAddress.a, tx_q_item->peerMacAddress.a, ETH_ALEN); + send_cfm_list_item->priority = tx_q_item->priority; + + list_add_tail(&send_cfm_list_item->q, frames_need_cfm_list); +} + +void uf_prepare_send_cfm_list_for_queued_pkts(unifi_priv_t * priv, + struct list_head *frames_need_cfm_list, + struct list_head * list) +{ + tx_buffered_packets_t *tx_q_item = NULL; + struct list_head *listHead; + struct list_head *placeHolder; + unsigned long lock_flags; + + func_enter(); + + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + + /* Search through the list and if confirmation required for any frames, + add it to the send_cfm list */ + list_for_each_safe(listHead, placeHolder, list) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + + if(!tx_q_item) { + unifi_error(priv, "Entry should exist, otherwise it is a (BUG)\n"); + continue; + } + + /* check if confirmation is requested and if the sender ID + is not netdevice client then save the entry in the list for need cfms */ + if (!(tx_q_item->transmissionControl & CSR_NO_CONFIRM_REQUIRED) && + (tx_q_item->leSenderProcessId != priv->netdev_client->sender_id)){ + unifi_trace(priv, UDBG1, "%s: SenderProcessID=%x host tag=%x transmission control=%x\n", + __FUNCTION__, + tx_q_item->leSenderProcessId, + tx_q_item->hostTag, + tx_q_item->transmissionControl); + + add_to_send_cfm_list(priv, tx_q_item, frames_need_cfm_list); + } + } + + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + + func_exit(); +} + + + +void uf_flush_list(unifi_priv_t * priv, struct list_head * list) +{ + tx_buffered_packets_t *tx_q_item; + struct list_head *listHead; + struct list_head *placeHolder; + unsigned long lock_flags; + + unifi_trace(priv, UDBG5, "entering the uf_flush_list \n"); + + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + /* go through list, delete & free memory */ + list_for_each_safe(listHead, placeHolder, list) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + + if(!tx_q_item) { + unifi_error(priv, "entry should exists, otherwise crashes (bug)\n"); + } + unifi_trace(priv, UDBG5, + "proccess_tx: in uf_flush_list peerMacAddress=%02X%02X%02X%02X%02X%02X senderProcessId=%x\n", + tx_q_item->peerMacAddress.a[0], tx_q_item->peerMacAddress.a[1], + tx_q_item->peerMacAddress.a[2], tx_q_item->peerMacAddress.a[3], + tx_q_item->peerMacAddress.a[4], tx_q_item->peerMacAddress.a[5], + tx_q_item->leSenderProcessId); + + list_del(listHead); + /* free the allocated memory */ + unifi_net_data_free(priv, &tx_q_item->bulkdata); + kfree(tx_q_item); + tx_q_item = NULL; + if (!priv->noOfPktQueuedInDriver) { + unifi_error(priv, "packets queued in driver 0 still decrementing in %s\n", __FUNCTION__); + } else { + priv->noOfPktQueuedInDriver--; + } + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); +} + +tx_buffered_packets_t *dequeue_tx_data_pdu(unifi_priv_t *priv, struct list_head *txList) +{ + /* dequeue the tx data packets from the appropriate queue */ + tx_buffered_packets_t *tx_q_item = NULL; + struct list_head *listHead; + struct list_head *placeHolder; + unsigned long lock_flags; + + unifi_trace(priv, UDBG5, "entering dequeue_tx_data_pdu\n"); + /* check for list empty */ + if (list_empty(txList)) { + unifi_trace(priv, UDBG5, "In dequeue_tx_data_pdu, the list is empty\n"); + return NULL; + } + + /* Verification, if packet count is negetive */ + if (priv->noOfPktQueuedInDriver == 0xFFFF) { + unifi_warning(priv, "no packet available in queue: debug"); + return NULL; + } + + /* return first node after header, & delete from the list && atleast one item exist */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_for_each_safe(listHead, placeHolder, txList) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + list_del(listHead); + break; + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + + if (tx_q_item) { + unifi_trace(priv, UDBG5, + "proccess_tx: In dequeue_tx_data_pdu peerMacAddress=%02X%02X%02X%02X%02X%02X senderProcessId=%x\n", + tx_q_item->peerMacAddress.a[0], tx_q_item->peerMacAddress.a[1], + tx_q_item->peerMacAddress.a[2], tx_q_item->peerMacAddress.a[3], + tx_q_item->peerMacAddress.a[4], tx_q_item->peerMacAddress.a[5], + tx_q_item->leSenderProcessId); + } + + unifi_trace(priv, UDBG5, "leaving dequeue_tx_data_pdu\n"); + return tx_q_item; +} +/* generic function to get the station record handler */ +CsrWifiRouterCtrlStaInfo_t *CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(unifi_priv_t *priv, + const u8 *peerMacAddress, + u16 interfaceTag) +{ + u8 i; + netInterface_priv_t *interfacePriv; + unsigned long lock_flags; + + if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { + unifi_error(priv, "interfaceTag is not proper, interfaceTag = %d\n", interfaceTag); + return NULL; + } + + interfacePriv = priv->interfacePriv[interfaceTag]; + + /* disable the preemption untill station record is fetched */ + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + + for (i = 0; i < UNIFI_MAX_CONNECTIONS; i++) { + if (interfacePriv->staInfo[i]!= NULL) { + if (!memcmp(((CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[i]))->peerMacAddress.a, peerMacAddress, ETH_ALEN)) { + /* enable the preemption as station record is fetched */ + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + unifi_trace(priv, UDBG5, "peer entry found in station record\n"); + return ((CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[i])); + } + } + } + /* enable the preemption as station record is fetched */ + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + unifi_trace(priv, UDBG5, "peer entry not found in station record\n"); + return NULL; +} +/* generic function to get the station record handler from the handle */ +CsrWifiRouterCtrlStaInfo_t * CsrWifiRouterCtrlGetStationRecordFromHandle(unifi_priv_t *priv, + u32 handle, + u16 interfaceTag) +{ + netInterface_priv_t *interfacePriv; + + if ((handle >= UNIFI_MAX_CONNECTIONS) || (interfaceTag >= CSR_WIFI_NUM_INTERFACES)) { + unifi_error(priv, "handle/interfaceTag is not proper, handle = %d, interfaceTag = %d\n", handle, interfaceTag); + return NULL; + } + interfacePriv = priv->interfacePriv[interfaceTag]; + return ((CsrWifiRouterCtrlStaInfo_t *) (interfacePriv->staInfo[handle])); +} + +/* Function to do inactivity */ +void uf_check_inactivity(unifi_priv_t *priv, u16 interfaceTag, CsrTime currentTime) +{ + u32 i; + CsrWifiRouterCtrlStaInfo_t *staInfo; + CsrTime elapsedTime; /* Time in microseconds */ + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + CsrWifiMacAddress peerMacAddress; + unsigned long lock_flags; + + if (interfacePriv == NULL) { + unifi_trace(priv, UDBG3, "uf_check_inactivity: Interface priv is NULL \n"); + return; + } + + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + /* Go through the list of stations to check for inactivity */ + for(i = 0; i < UNIFI_MAX_CONNECTIONS; i++) { + staInfo = CsrWifiRouterCtrlGetStationRecordFromHandle(priv, i, interfaceTag); + if(!staInfo ) { + continue; + } + + unifi_trace(priv, UDBG3, "Running Inactivity handler Time %xus station's last activity %xus\n", + currentTime, staInfo->lastActivity); + + + elapsedTime = (currentTime >= staInfo->lastActivity)? + (currentTime - staInfo->lastActivity): + (~((u32)0) - staInfo->lastActivity + currentTime); + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + if (elapsedTime > MAX_INACTIVITY_INTERVAL) { + memcpy((u8*)&peerMacAddress, (u8*)&staInfo->peerMacAddress, sizeof(CsrWifiMacAddress)); + + /* Indicate inactivity for the station */ + unifi_trace(priv, UDBG3, "Station %x:%x:%x:%x:%x:%x inactive since %xus\n sending Inactive Ind\n", + peerMacAddress.a[0], peerMacAddress.a[1], + peerMacAddress.a[2], peerMacAddress.a[3], + peerMacAddress.a[4], peerMacAddress.a[5], + elapsedTime); + + CsrWifiRouterCtrlStaInactiveIndSend(priv->CSR_WIFI_SME_IFACEQUEUE, 0, interfaceTag, peerMacAddress); + } + } + + interfacePriv->last_inactivity_check = currentTime; +} + +/* Function to update activity of a station */ +void uf_update_sta_activity(unifi_priv_t *priv, u16 interfaceTag, const u8 *peerMacAddress) +{ + CsrTime elapsedTime, currentTime; /* Time in microseconds */ + CsrTime timeHi; /* Not used - Time in microseconds */ + CsrWifiRouterCtrlStaInfo_t *staInfo; + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + unsigned long lock_flags; + + if (interfacePriv == NULL) { + unifi_trace(priv, UDBG3, "uf_check_inactivity: Interface priv is NULL \n"); + return; + } + + currentTime = CsrTimeGet(&timeHi); + + + staInfo = CsrWifiRouterCtrlGetStationRecordFromPeerMacAddress(priv, peerMacAddress, interfaceTag); + + if (staInfo == NULL) { + unifi_trace(priv, UDBG4, "Sta does not exist yet"); + return; + } + + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + /* Update activity */ + staInfo->lastActivity = currentTime; + + /* See if inactivity handler needs to be run + * Here it is theoretically possible that the counter may have wrapped around. But + * since we just want to know when to run the inactivity handler it does not really matter. + * Especially since this is data path it makes sense in keeping it simple and avoiding + * 64 bit handling */ + elapsedTime = (currentTime >= interfacePriv->last_inactivity_check)? + (currentTime - interfacePriv->last_inactivity_check): + (~((u32)0) - interfacePriv->last_inactivity_check + currentTime); + + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + + /* Check if it is time to run the inactivity handler */ + if (elapsedTime > INACTIVITY_CHECK_INTERVAL) { + uf_check_inactivity(priv, interfaceTag, currentTime); + } +} +void resume_unicast_buffered_frames(unifi_priv_t *priv, u16 interfaceTag) +{ + + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + u8 i; + int j; + tx_buffered_packets_t * buffered_pkt = NULL; + u8 hipslotFree[4] = {TRUE,TRUE,TRUE,TRUE}; + int r; + unsigned long lock_flags; + + func_enter(); + while(!isRouterBufferEnabled(priv,3) && + ((buffered_pkt=dequeue_tx_data_pdu(priv,&interfacePriv->genericMgtFrames))!=NULL)) { + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,NULL,0,FALSE)) == -ENOSPC) { + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &interfacePriv->genericMgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + hipslotFree[3]=FALSE; + break; + }else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + for(i = 0; i < UNIFI_MAX_CONNECTIONS; i++) { + CsrWifiRouterCtrlStaInfo_t *staInfo = interfacePriv->staInfo[i]; + if(!hipslotFree[0] && !hipslotFree[1] && !hipslotFree[2] && !hipslotFree[3]) { + unifi_trace(priv, UDBG3, "(ENOSPC) in resume_unicast_buffered_frames:: hip slots are full \n"); + break; + } + if (staInfo && (staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE)) { + while((( TRUE == hipslotFree[3] ) && (buffered_pkt=dequeue_tx_data_pdu(priv, &staInfo->mgtFrames)))) { + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staInfo,0,FALSE)) == -ENOSPC) { + unifi_trace(priv, UDBG3, "(ENOSPC) in resume_unicast_buffered_frames:: hip slots are full for voice queue\n"); + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staInfo->mgtFrames); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[3]=(u8)(staInfo->assignedHandle); + hipslotFree[3] = FALSE; + break; + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + + for(j=3;j>=0;j--) { + if(!hipslotFree[j]) + continue; + + while((buffered_pkt=dequeue_tx_data_pdu(priv, &staInfo->dataPdu[j]))) { + buffered_pkt->transmissionControl &= + ~(TRANSMISSION_CONTROL_TRIGGER_MASK|TRANSMISSION_CONTROL_EOSP_MASK); + if((r=frame_and_send_queued_pdu(priv,buffered_pkt,staInfo,0,FALSE)) == -ENOSPC) { + /* Enqueue at the head of the queue */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_add(&buffered_pkt->q, &staInfo->dataPdu[j]); + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + priv->pausedStaHandle[j]=(u8)(staInfo->assignedHandle); + hipslotFree[j]=FALSE; + break; + } else { + if(r){ + unifi_trace (priv, UDBG1, " HIP validation failure : PDU sending failed \n"); + /* the PDU failed where we can't do any thing so free the storage */ + unifi_net_data_free(priv, &buffered_pkt->bulkdata); + } + kfree(buffered_pkt); + } + } + } + } + } + func_exit(); +} +void update_eosp_to_head_of_broadcast_list_head(unifi_priv_t *priv,u16 interfaceTag) +{ + + netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; + unsigned long lock_flags; + struct list_head *listHead; + struct list_head *placeHolder; + tx_buffered_packets_t *tx_q_item; + + func_enter(); + if (interfacePriv->noOfbroadcastPktQueued) { + + /* Update the EOSP to the HEAD of b/c list + * beacuse we have received any mgmt packet so it should not hold for long time + * peer may time out. + */ + spin_lock_irqsave(&priv->tx_q_lock,lock_flags); + list_for_each_safe(listHead, placeHolder, &interfacePriv->genericMulticastOrBroadCastFrames) { + tx_q_item = list_entry(listHead, tx_buffered_packets_t, q); + tx_q_item->transmissionControl |= TRANSMISSION_CONTROL_EOSP_MASK; + tx_q_item->transmissionControl = (tx_q_item->transmissionControl & ~(CSR_NO_CONFIRM_REQUIRED)); + unifi_trace(priv, UDBG1,"updating eosp for list Head hostTag:= 0x%x ",tx_q_item->hostTag); + break; + } + spin_unlock_irqrestore(&priv->tx_q_lock,lock_flags); + } + func_exit(); +} + +/* + * --------------------------------------------------------------------------- + * resume_suspended_uapsd + * + * This function takes care processing packets of Unscheduled Service Period, + * which been suspended earlier due to DTIM/HIP ENOSPC scenarios + * + * Arguments: + * priv Pointer to device private context struct + * interfaceTag For which resume should happen + * --------------------------------------------------------------------------- + */ +void resume_suspended_uapsd(unifi_priv_t* priv,u16 interfaceTag) +{ + + u8 startIndex; + CsrWifiRouterCtrlStaInfo_t * staInfo = NULL; + unsigned long lock_flags; + + unifi_trace(priv, UDBG2, "++resume_suspended_uapsd: \n"); + for(startIndex= 0; startIndex < UNIFI_MAX_CONNECTIONS;startIndex++) { + staInfo = CsrWifiRouterCtrlGetStationRecordFromHandle(priv,startIndex,interfaceTag); + + if(!staInfo || !staInfo->wmmOrQosEnabled) { + continue; + } else if((staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_POWER_SAVE) + &&staInfo->uapsdActive && staInfo->uspSuspend) { + /* U-APSD Still active & previously suspended either ENOSPC of FH queues OR + * due to DTIM activity + */ + uf_handle_uspframes_delivery(priv, staInfo, interfaceTag); + } else { + unifi_trace(priv, UDBG2, "resume_suspended_uapsd: PS state=%x, uapsdActive?=%x, suspend?=%x\n", + staInfo->currentPeerState, staInfo->uapsdActive, staInfo->uspSuspend); + if (staInfo->currentPeerState == CSR_WIFI_ROUTER_CTRL_PEER_CONNECTED_ACTIVE) + { + spin_lock_irqsave(&priv->staRecord_lock,lock_flags); + staInfo->uapsdActive = FALSE; + staInfo->uspSuspend = FALSE; + spin_unlock_irqrestore(&priv->staRecord_lock,lock_flags); + } + } + } + unifi_trace(priv, UDBG2, "--resume_suspended_uapsd:\n"); +} + +#endif |