diff options
Diffstat (limited to 'drivers/staging/bcm/LeakyBucket.c')
| -rw-r--r-- | drivers/staging/bcm/LeakyBucket.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/drivers/staging/bcm/LeakyBucket.c b/drivers/staging/bcm/LeakyBucket.c deleted file mode 100644 index d6b55f993b57..000000000000 --- a/drivers/staging/bcm/LeakyBucket.c +++ /dev/null @@ -1,364 +0,0 @@ -/********************************************************************** -* LEAKYBUCKET.C -* This file contains the routines related to Leaky Bucket Algorithm. -***********************************************************************/ -#include "headers.h" - -/** - * UpdateTokenCount() - Calculates the token count for each channel - * and updates the same in Adapter structure - * @Adapter: Pointer to the Adapter structure. - * - * Return: None - */ -static VOID UpdateTokenCount(register struct bcm_mini_adapter *Adapter) -{ - ULONG liCurrentTime; - INT i = 0; - struct timeval tv; - struct bcm_packet_info *curr_pi; - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "=====>\n"); - if (NULL == Adapter) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, - DBG_LVL_ALL, "Adapter found NULL!\n"); - return; - } - - do_gettimeofday(&tv); - for (i = 0; i < NO_OF_QUEUES; i++) { - curr_pi = &Adapter->PackInfo[i]; - - if (TRUE == curr_pi->bValid && (1 == curr_pi->ucDirection)) { - liCurrentTime = ((tv.tv_sec - - curr_pi->stLastUpdateTokenAt.tv_sec)*1000 + - (tv.tv_usec - curr_pi->stLastUpdateTokenAt.tv_usec) / - 1000); - if (0 != liCurrentTime) { - curr_pi->uiCurrentTokenCount += (ULONG) - ((curr_pi->uiMaxAllowedRate) * - ((ULONG)((liCurrentTime)))/1000); - memcpy(&curr_pi->stLastUpdateTokenAt, &tv, - sizeof(struct timeval)); - curr_pi->liLastUpdateTokenAt = liCurrentTime; - if (curr_pi->uiCurrentTokenCount >= - curr_pi->uiMaxBucketSize) { - curr_pi->uiCurrentTokenCount = - curr_pi->uiMaxBucketSize; - } - } - } - } - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "<=====\n"); -} - - -/** - * IsPacketAllowedForFlow() - This function checks whether the given - * packet from the specified queue can be allowed for transmission by - * checking the token count. - * @Adapter: Pointer to the Adpater structure. - * @iQIndex: The queue Identifier. - * @ulPacketLength: Number of bytes to be transmitted. - * - * Returns: The number of bytes allowed for transmission. - */ -static ULONG GetSFTokenCount(struct bcm_mini_adapter *Adapter, struct bcm_packet_info *psSF) -{ - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "IsPacketAllowedForFlow ===>"); - - /* Validate the parameters */ - if (NULL == Adapter || (psSF < Adapter->PackInfo && - (uintptr_t)psSF > (uintptr_t) &Adapter->PackInfo[HiPriority])) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "IPAFF: Got wrong Parameters:Adapter: %p, QIndex: %zd\n", - Adapter, (psSF-Adapter->PackInfo)); - return 0; - } - - if (false != psSF->bValid && psSF->ucDirection) { - if (0 != psSF->uiCurrentTokenCount) { - return psSF->uiCurrentTokenCount; - } else { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, - DBG_LVL_ALL, - "Not enough tokens in queue %zd Available %u\n", - psSF-Adapter->PackInfo, psSF->uiCurrentTokenCount); - psSF->uiPendedLast = 1; - } - } else { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "IPAFF: Queue %zd not valid\n", - psSF-Adapter->PackInfo); - } - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TOKEN_COUNTS, DBG_LVL_ALL, - "IsPacketAllowedForFlow <==="); - return 0; -} - -/** -@ingroup tx_functions -This function despatches packet from the specified queue. -@return Zero(success) or Negative value(failure) -*/ -static INT SendPacketFromQueue(struct bcm_mini_adapter *Adapter,/**<Logical Adapter*/ - struct bcm_packet_info *psSF, /**<Queue identifier*/ - struct sk_buff *Packet) /**<Pointer to the packet to be sent*/ -{ - INT Status = STATUS_FAILURE; - UINT uiIndex = 0, PktLen = 0; - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, SEND_QUEUE, DBG_LVL_ALL, - "=====>"); - if (!Adapter || !Packet || !psSF) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, SEND_QUEUE, DBG_LVL_ALL, - "Got NULL Adapter or Packet"); - return -EINVAL; - } - - if (psSF->liDrainCalculated == 0) - psSF->liDrainCalculated = jiffies; - /* send the packet to the fifo.. */ - PktLen = Packet->len; - Status = SetupNextSend(Adapter, Packet, psSF->usVCID_Value); - if (Status == 0) { - for (uiIndex = 0; uiIndex < MIBS_MAX_HIST_ENTRIES; uiIndex++) { - if ((PktLen <= MIBS_PKTSIZEHIST_RANGE*(uiIndex+1)) && - (PktLen > MIBS_PKTSIZEHIST_RANGE*(uiIndex))) - Adapter->aTxPktSizeHist[uiIndex]++; - } - } - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, SEND_QUEUE, DBG_LVL_ALL, - "<====="); - return Status; -} - -static void get_data_packet(struct bcm_mini_adapter *ad, - struct bcm_packet_info *ps_sf) -{ - int packet_len; - struct sk_buff *qpacket; - - if (!ps_sf->ucDirection) - return; - - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "UpdateTokenCount "); - if (ad->IdleMode || ad->bPreparingForLowPowerMode) - return; /* in idle mode */ - - /* Check for Free Descriptors */ - if (atomic_read(&ad->CurrNumFreeTxDesc) <= - MINIMUM_PENDING_DESCRIPTORS) { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - " No Free Tx Descriptor(%d) is available for Data pkt..", - atomic_read(&ad->CurrNumFreeTxDesc)); - return; - } - - spin_lock_bh(&ps_sf->SFQueueLock); - qpacket = ps_sf->FirstTxQueue; - - if (qpacket) { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "Dequeuing Data Packet"); - - if (ps_sf->bEthCSSupport) - packet_len = qpacket->len; - else - packet_len = qpacket->len - ETH_HLEN; - - packet_len <<= 3; - if (packet_len <= GetSFTokenCount(ad, ps_sf)) { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, "Allowed bytes %d", - (packet_len >> 3)); - - DEQUEUEPACKET(ps_sf->FirstTxQueue, ps_sf->LastTxQueue); - ps_sf->uiCurrentBytesOnHost -= (qpacket->len); - ps_sf->uiCurrentPacketsOnHost--; - atomic_dec(&ad->TotalPacketCount); - spin_unlock_bh(&ps_sf->SFQueueLock); - - SendPacketFromQueue(ad, ps_sf, qpacket); - ps_sf->uiPendedLast = false; - } else { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, "For Queue: %zd\n", - ps_sf - ad->PackInfo); - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, - "\nAvailable Tokens = %d required = %d\n", - ps_sf->uiCurrentTokenCount, - packet_len); - /* - this part indicates that because of - non-availability of the tokens - pkt has not been send out hence setting the - pending flag indicating the host to send it out - first next iteration. - */ - ps_sf->uiPendedLast = TRUE; - spin_unlock_bh(&ps_sf->SFQueueLock); - } - } else { - spin_unlock_bh(&ps_sf->SFQueueLock); - } -} - -static void send_control_packet(struct bcm_mini_adapter *ad, - struct bcm_packet_info *ps_sf) -{ - char *ctrl_packet = NULL; - INT status = 0; - - if ((atomic_read(&ad->CurrNumFreeTxDesc) > 0) && - (atomic_read(&ad->index_rd_txcntrlpkt) != - atomic_read(&ad->index_wr_txcntrlpkt))) { - ctrl_packet = ad->txctlpacket - [(atomic_read(&ad->index_rd_txcntrlpkt)%MAX_CNTRL_PKTS)]; - if (ctrl_packet) { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, - "Sending Control packet"); - status = SendControlPacket(ad, ctrl_packet); - if (STATUS_SUCCESS == status) { - spin_lock_bh(&ps_sf->SFQueueLock); - ps_sf->NumOfPacketsSent++; - ps_sf->uiSentBytes += ((struct bcm_leader *)ctrl_packet)->PLength; - ps_sf->uiSentPackets++; - atomic_dec(&ad->TotalPacketCount); - ps_sf->uiCurrentBytesOnHost -= ((struct bcm_leader *)ctrl_packet)->PLength; - ps_sf->uiCurrentPacketsOnHost--; - atomic_inc(&ad->index_rd_txcntrlpkt); - spin_unlock_bh(&ps_sf->SFQueueLock); - } else { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, - "SendControlPacket Failed\n"); - } - } else { - BCM_DEBUG_PRINT(ad, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, - " Control Pkt is not available, Indexing is wrong...."); - } - } -} - -/** - * CheckAndSendPacketFromIndex() - This function dequeues the - * data/control packet from the specified queue for transmission. - * @Adapter: Pointer to the driver control structure. - * @iQIndex: The queue Identifier. - * - * Returns: None. - */ -static VOID CheckAndSendPacketFromIndex(struct bcm_mini_adapter *Adapter, - struct bcm_packet_info *psSF) -{ - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "%zd ====>", (psSF-Adapter->PackInfo)); - if ((psSF != &Adapter->PackInfo[HiPriority]) && - Adapter->LinkUpStatus && - atomic_read(&psSF->uiPerSFTxResourceCount)) { /* Get data packet */ - - get_data_packet(Adapter, psSF); - } else { - send_control_packet(Adapter, psSF); - } -} - - -/** - * transmit_packets() - This function transmits the packets from - * different queues, if free descriptors are available on target. - * @Adapter: Pointer to the Adapter structure. - * - * Returns: None. - */ -VOID transmit_packets(struct bcm_mini_adapter *Adapter) -{ - UINT uiPrevTotalCount = 0; - int iIndex = 0; - - bool exit_flag = TRUE; - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "=====>"); - - if (NULL == Adapter) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "Got NULL Adapter"); - return; - } - if (Adapter->device_removed == TRUE) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "Device removed"); - return; - } - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "\nUpdateTokenCount ====>\n"); - - UpdateTokenCount(Adapter); - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "\nPruneQueueAllSF ====>\n"); - - PruneQueueAllSF(Adapter); - - uiPrevTotalCount = atomic_read(&Adapter->TotalPacketCount); - - for (iIndex = HiPriority; iIndex >= 0; iIndex--) { - if (!uiPrevTotalCount || (TRUE == Adapter->device_removed)) - break; - - if (Adapter->PackInfo[iIndex].bValid && - Adapter->PackInfo[iIndex].uiPendedLast && - Adapter->PackInfo[iIndex].uiCurrentBytesOnHost) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, - "Calling CheckAndSendPacketFromIndex.."); - CheckAndSendPacketFromIndex(Adapter, - &Adapter->PackInfo[iIndex]); - uiPrevTotalCount--; - } - } - - while (uiPrevTotalCount > 0 && !Adapter->device_removed) { - exit_flag = TRUE; - /* second iteration to parse non-pending queues */ - for (iIndex = HiPriority; iIndex >= 0; iIndex--) { - if (!uiPrevTotalCount || - (TRUE == Adapter->device_removed)) - break; - - if (Adapter->PackInfo[iIndex].bValid && - Adapter->PackInfo[iIndex].uiCurrentBytesOnHost && - !Adapter->PackInfo[iIndex].uiPendedLast) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, - TX_PACKETS, DBG_LVL_ALL, - "Calling CheckAndSendPacketFromIndex.."); - CheckAndSendPacketFromIndex(Adapter, &Adapter->PackInfo[iIndex]); - uiPrevTotalCount--; - exit_flag = false; - } - } - - if (Adapter->IdleMode || Adapter->bPreparingForLowPowerMode) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, "In Idle Mode\n"); - break; - } - if (exit_flag == TRUE) - break; - } /* end of inner while loop */ - - update_per_cid_rx(Adapter); - Adapter->txtransmit_running = 0; - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "<======"); -} |