diff options
Diffstat (limited to 'drivers/staging/bcm/Qos.c')
| -rw-r--r-- | drivers/staging/bcm/Qos.c | 777 |
1 files changed, 777 insertions, 0 deletions
diff --git a/drivers/staging/bcm/Qos.c b/drivers/staging/bcm/Qos.c new file mode 100644 index 00000000000..0c742da8c6b --- /dev/null +++ b/drivers/staging/bcm/Qos.c @@ -0,0 +1,777 @@ +/** +@file Qos.C +This file contains the routines related to Quality of Service. +*/ +#include "headers.h" + +static void EThCSGetPktInfo(struct bcm_mini_adapter *Adapter, + PVOID pvEthPayload, + struct bcm_eth_packet_info *pstEthCsPktInfo); + +static bool EThCSClassifyPkt(struct bcm_mini_adapter *Adapter, + struct sk_buff *skb, + struct bcm_eth_packet_info *pstEthCsPktInfo, + struct bcm_classifier_rule *pstClassifierRule, + B_UINT8 EthCSCupport); + +static USHORT IpVersion4(struct bcm_mini_adapter *Adapter, struct iphdr *iphd, + struct bcm_classifier_rule *pstClassifierRule); + +static VOID PruneQueue(struct bcm_mini_adapter *Adapter, INT iIndex); + + +/******************************************************************* +* Function - MatchSrcIpAddress() +* +* Description - Checks whether the Source IP address from the packet +* matches with that of Queue. +* +* Parameters - pstClassifierRule: Pointer to the packet info structure. +* - ulSrcIP : Source IP address from the packet. +* +* Returns - TRUE(If address matches) else FAIL . +*********************************************************************/ +static bool MatchSrcIpAddress(struct bcm_classifier_rule *pstClassifierRule, ULONG ulSrcIP) +{ + UCHAR ucLoopIndex = 0; + + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + + ulSrcIP = ntohl(ulSrcIP); + if (0 == pstClassifierRule->ucIPSourceAddressLength) + return TRUE; + for (ucLoopIndex = 0; ucLoopIndex < (pstClassifierRule->ucIPSourceAddressLength); ucLoopIndex++) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Ip Address Mask:0x%x PacketIp:0x%x and Classification:0x%x", (UINT)pstClassifierRule->stSrcIpAddress.ulIpv4Mask[ucLoopIndex], (UINT)ulSrcIP, (UINT)pstClassifierRule->stSrcIpAddress.ulIpv6Addr[ucLoopIndex]); + if ((pstClassifierRule->stSrcIpAddress.ulIpv4Mask[ucLoopIndex] & ulSrcIP) == + (pstClassifierRule->stSrcIpAddress.ulIpv4Addr[ucLoopIndex] & pstClassifierRule->stSrcIpAddress.ulIpv4Mask[ucLoopIndex])) + return TRUE; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Ip Address Not Matched"); + return false; +} + + +/******************************************************************* +* Function - MatchDestIpAddress() +* +* Description - Checks whether the Destination IP address from the packet +* matches with that of Queue. +* +* Parameters - pstClassifierRule: Pointer to the packet info structure. +* - ulDestIP : Destination IP address from the packet. +* +* Returns - TRUE(If address matches) else FAIL . +*********************************************************************/ +static bool MatchDestIpAddress(struct bcm_classifier_rule *pstClassifierRule, ULONG ulDestIP) +{ + UCHAR ucLoopIndex = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + + ulDestIP = ntohl(ulDestIP); + if (0 == pstClassifierRule->ucIPDestinationAddressLength) + return TRUE; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination Ip Address 0x%x 0x%x 0x%x ", (UINT)ulDestIP, (UINT)pstClassifierRule->stDestIpAddress.ulIpv4Mask[ucLoopIndex], (UINT)pstClassifierRule->stDestIpAddress.ulIpv4Addr[ucLoopIndex]); + + for (ucLoopIndex = 0; ucLoopIndex < (pstClassifierRule->ucIPDestinationAddressLength); ucLoopIndex++) { + if ((pstClassifierRule->stDestIpAddress.ulIpv4Mask[ucLoopIndex] & ulDestIP) == + (pstClassifierRule->stDestIpAddress.ulIpv4Addr[ucLoopIndex] & pstClassifierRule->stDestIpAddress.ulIpv4Mask[ucLoopIndex])) + return TRUE; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination Ip Address Not Matched"); + return false; +} + + +/************************************************************************ +* Function - MatchTos() +* +* Description - Checks the TOS from the packet matches with that of queue. +* +* Parameters - pstClassifierRule : Pointer to the packet info structure. +* - ucTypeOfService: TOS from the packet. +* +* Returns - TRUE(If address matches) else FAIL. +**************************************************************************/ +static bool MatchTos(struct bcm_classifier_rule *pstClassifierRule, UCHAR ucTypeOfService) +{ + + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + if (3 != pstClassifierRule->ucIPTypeOfServiceLength) + return TRUE; + + if (((pstClassifierRule->ucTosMask & ucTypeOfService) <= pstClassifierRule->ucTosHigh) && ((pstClassifierRule->ucTosMask & ucTypeOfService) >= pstClassifierRule->ucTosLow)) + return TRUE; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Type Of Service Not Matched"); + return false; +} + + +/*************************************************************************** +* Function - MatchProtocol() +* +* Description - Checks the protocol from the packet matches with that of queue. +* +* Parameters - pstClassifierRule: Pointer to the packet info structure. +* - ucProtocol : Protocol from the packet. +* +* Returns - TRUE(If address matches) else FAIL. +****************************************************************************/ +bool MatchProtocol(struct bcm_classifier_rule *pstClassifierRule, UCHAR ucProtocol) +{ + UCHAR ucLoopIndex = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + if (0 == pstClassifierRule->ucProtocolLength) + return TRUE; + for (ucLoopIndex = 0; ucLoopIndex < pstClassifierRule->ucProtocolLength; ucLoopIndex++) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol:0x%X Classification Protocol:0x%X", ucProtocol, pstClassifierRule->ucProtocol[ucLoopIndex]); + if (pstClassifierRule->ucProtocol[ucLoopIndex] == ucProtocol) + return TRUE; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol Not Matched"); + return false; +} + + +/*********************************************************************** +* Function - MatchSrcPort() +* +* Description - Checks, Source port from the packet matches with that of queue. +* +* Parameters - pstClassifierRule: Pointer to the packet info structure. +* - ushSrcPort : Source port from the packet. +* +* Returns - TRUE(If address matches) else FAIL. +***************************************************************************/ +bool MatchSrcPort(struct bcm_classifier_rule *pstClassifierRule, USHORT ushSrcPort) +{ + UCHAR ucLoopIndex = 0; + + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + + + if (0 == pstClassifierRule->ucSrcPortRangeLength) + return TRUE; + for (ucLoopIndex = 0; ucLoopIndex < pstClassifierRule->ucSrcPortRangeLength; ucLoopIndex++) { + if (ushSrcPort <= pstClassifierRule->usSrcPortRangeHi[ucLoopIndex] && + ushSrcPort >= pstClassifierRule->usSrcPortRangeLo[ucLoopIndex]) + return TRUE; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Port: %x Not Matched ", ushSrcPort); + return false; +} + + +/*********************************************************************** +* Function - MatchDestPort() +* +* Description - Checks, Destination port from packet matches with that of queue. +* +* Parameters - pstClassifierRule: Pointer to the packet info structure. +* - ushDestPort : Destination port from the packet. +* +* Returns - TRUE(If address matches) else FAIL. +***************************************************************************/ +bool MatchDestPort(struct bcm_classifier_rule *pstClassifierRule, USHORT ushDestPort) +{ + UCHAR ucLoopIndex = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + + if (0 == pstClassifierRule->ucDestPortRangeLength) + return TRUE; + + for (ucLoopIndex = 0; ucLoopIndex < pstClassifierRule->ucDestPortRangeLength; ucLoopIndex++) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Matching Port:0x%X 0x%X 0x%X", ushDestPort, pstClassifierRule->usDestPortRangeLo[ucLoopIndex], pstClassifierRule->usDestPortRangeHi[ucLoopIndex]); + + if (ushDestPort <= pstClassifierRule->usDestPortRangeHi[ucLoopIndex] && + ushDestPort >= pstClassifierRule->usDestPortRangeLo[ucLoopIndex]) + return TRUE; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Dest Port: %x Not Matched", ushDestPort); + return false; +} +/** +@ingroup tx_functions +Compares IPV4 Ip address and port number +@return Queue Index. +*/ +static USHORT IpVersion4(struct bcm_mini_adapter *Adapter, + struct iphdr *iphd, + struct bcm_classifier_rule *pstClassifierRule) +{ + struct bcm_transport_header *xprt_hdr = NULL; + bool bClassificationSucceed = false; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "========>"); + + xprt_hdr = (struct bcm_transport_header *)((PUCHAR)iphd + sizeof(struct iphdr)); + + do { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Trying to see Direction = %d %d", + pstClassifierRule->ucDirection, + pstClassifierRule->usVCID_Value); + + //Checking classifier validity + if (!pstClassifierRule->bUsed || pstClassifierRule->ucDirection == DOWNLINK_DIR) + break; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "is IPv6 check!"); + if (pstClassifierRule->bIpv6Protocol) + break; + + //**************Checking IP header parameter**************************// + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Trying to match Source IP Address"); + if (!MatchSrcIpAddress(pstClassifierRule, iphd->saddr)) + break; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Source IP Address Matched"); + + if (!MatchDestIpAddress(pstClassifierRule, iphd->daddr)) + break; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination IP Address Matched"); + + if (!MatchTos(pstClassifierRule, iphd->tos)) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "TOS Match failed\n"); + break; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "TOS Matched"); + + if (!MatchProtocol(pstClassifierRule, iphd->protocol)) + break; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol Matched"); + + //if protocol is not TCP or UDP then no need of comparing source port and destination port + if (iphd->protocol != TCP && iphd->protocol != UDP) { + bClassificationSucceed = TRUE; + break; + } + //******************Checking Transport Layer Header field if present *****************// + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Source Port %04x", + (iphd->protocol == UDP) ? xprt_hdr->uhdr.source : xprt_hdr->thdr.source); + + if (!MatchSrcPort(pstClassifierRule, + ntohs((iphd->protocol == UDP) ? + xprt_hdr->uhdr.source : xprt_hdr->thdr.source))) + break; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Port Matched"); + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination Port %04x", + (iphd->protocol == UDP) ? xprt_hdr->uhdr.dest : + xprt_hdr->thdr.dest); + if (!MatchDestPort(pstClassifierRule, + ntohs((iphd->protocol == UDP) ? + xprt_hdr->uhdr.dest : xprt_hdr->thdr.dest))) + break; + bClassificationSucceed = TRUE; + } while (0); + + if (TRUE == bClassificationSucceed) { + INT iMatchedSFQueueIndex = 0; + iMatchedSFQueueIndex = SearchSfid(Adapter, pstClassifierRule->ulSFID); + if (iMatchedSFQueueIndex >= NO_OF_QUEUES) + bClassificationSucceed = false; + else if (false == Adapter->PackInfo[iMatchedSFQueueIndex].bActive) + bClassificationSucceed = false; + } + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "IpVersion4 <=========="); + + return bClassificationSucceed; +} + +VOID PruneQueueAllSF(struct bcm_mini_adapter *Adapter) +{ + UINT iIndex = 0; + + for (iIndex = 0; iIndex < HiPriority; iIndex++) { + if (!Adapter->PackInfo[iIndex].bValid) + continue; + + PruneQueue(Adapter, iIndex); + } +} + + +/** +@ingroup tx_functions +This function checks if the max queue size for a queue +is less than number of bytes in the queue. If so - +drops packets from the Head till the number of bytes is +less than or equal to max queue size for the queue. +*/ +static VOID PruneQueue(struct bcm_mini_adapter *Adapter, INT iIndex) +{ + struct sk_buff* PacketToDrop = NULL; + struct net_device_stats *netstats; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "=====> Index %d", iIndex); + + if (iIndex == HiPriority) + return; + + if (!Adapter || (iIndex < 0) || (iIndex > HiPriority)) + return; + + /* To Store the netdevice statistic */ + netstats = &Adapter->dev->stats; + + spin_lock_bh(&Adapter->PackInfo[iIndex].SFQueueLock); + + while (1) { +// while((UINT)Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost > +// SF_MAX_ALLOWED_PACKETS_TO_BACKUP) { + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "uiCurrentBytesOnHost:%x uiMaxBucketSize :%x", + Adapter->PackInfo[iIndex].uiCurrentBytesOnHost, + Adapter->PackInfo[iIndex].uiMaxBucketSize); + + PacketToDrop = Adapter->PackInfo[iIndex].FirstTxQueue; + + if (PacketToDrop == NULL) + break; + if ((Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost < SF_MAX_ALLOWED_PACKETS_TO_BACKUP) && + ((1000*(jiffies - *((B_UINT32 *)(PacketToDrop->cb)+SKB_CB_LATENCY_OFFSET))/HZ) <= Adapter->PackInfo[iIndex].uiMaxLatency)) + break; + + if (PacketToDrop) { + if (netif_msg_tx_err(Adapter)) + pr_info(PFX "%s: tx queue %d overlimit\n", + Adapter->dev->name, iIndex); + + netstats->tx_dropped++; + + DEQUEUEPACKET(Adapter->PackInfo[iIndex].FirstTxQueue, + Adapter->PackInfo[iIndex].LastTxQueue); + /// update current bytes and packets count + Adapter->PackInfo[iIndex].uiCurrentBytesOnHost -= + PacketToDrop->len; + Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost--; + /// update dropped bytes and packets counts + Adapter->PackInfo[iIndex].uiDroppedCountBytes += PacketToDrop->len; + Adapter->PackInfo[iIndex].uiDroppedCountPackets++; + dev_kfree_skb(PacketToDrop); + + } + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "Dropped Bytes:%x Dropped Packets:%x", + Adapter->PackInfo[iIndex].uiDroppedCountBytes, + Adapter->PackInfo[iIndex].uiDroppedCountPackets); + + atomic_dec(&Adapter->TotalPacketCount); + } + + spin_unlock_bh(&Adapter->PackInfo[iIndex].SFQueueLock); + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "TotalPacketCount:%x", + atomic_read(&Adapter->TotalPacketCount)); + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "<====="); +} + +VOID flush_all_queues(struct bcm_mini_adapter *Adapter) +{ + INT iQIndex; + UINT uiTotalPacketLength; + struct sk_buff* PacketToDrop = NULL; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "=====>"); + +// down(&Adapter->data_packet_queue_lock); + for (iQIndex = LowPriority; iQIndex < HiPriority; iQIndex++) { + struct net_device_stats *netstats = &Adapter->dev->stats; + + spin_lock_bh(&Adapter->PackInfo[iQIndex].SFQueueLock); + while (Adapter->PackInfo[iQIndex].FirstTxQueue) { + PacketToDrop = Adapter->PackInfo[iQIndex].FirstTxQueue; + if (PacketToDrop) { + uiTotalPacketLength = PacketToDrop->len; + netstats->tx_dropped++; + } else + uiTotalPacketLength = 0; + + DEQUEUEPACKET(Adapter->PackInfo[iQIndex].FirstTxQueue, + Adapter->PackInfo[iQIndex].LastTxQueue); + + /* Free the skb */ + dev_kfree_skb(PacketToDrop); + + /// update current bytes and packets count + Adapter->PackInfo[iQIndex].uiCurrentBytesOnHost -= uiTotalPacketLength; + Adapter->PackInfo[iQIndex].uiCurrentPacketsOnHost--; + + /// update dropped bytes and packets counts + Adapter->PackInfo[iQIndex].uiDroppedCountBytes += uiTotalPacketLength; + Adapter->PackInfo[iQIndex].uiDroppedCountPackets++; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "Dropped Bytes:%x Dropped Packets:%x", + Adapter->PackInfo[iQIndex].uiDroppedCountBytes, + Adapter->PackInfo[iQIndex].uiDroppedCountPackets); + atomic_dec(&Adapter->TotalPacketCount); + } + spin_unlock_bh(&Adapter->PackInfo[iQIndex].SFQueueLock); + } +// up(&Adapter->data_packet_queue_lock); + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "<====="); +} + +USHORT ClassifyPacket(struct bcm_mini_adapter *Adapter, struct sk_buff* skb) +{ + INT uiLoopIndex = 0; + struct bcm_classifier_rule *pstClassifierRule = NULL; + struct bcm_eth_packet_info stEthCsPktInfo; + PVOID pvEThPayload = NULL; + struct iphdr *pIpHeader = NULL; + INT uiSfIndex = 0; + USHORT usIndex = Adapter->usBestEffortQueueIndex; + bool bFragmentedPkt = false, bClassificationSucceed = false; + USHORT usCurrFragment = 0; + + struct bcm_tcp_header *pTcpHeader; + UCHAR IpHeaderLength; + UCHAR TcpHeaderLength; + + pvEThPayload = skb->data; + *((UINT32*) (skb->cb) +SKB_CB_TCPACK_OFFSET) = 0; + EThCSGetPktInfo(Adapter, pvEThPayload, &stEthCsPktInfo); + + switch (stEthCsPktInfo.eNwpktEthFrameType) { + case eEth802LLCFrame: + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802LLCFrame\n"); + pIpHeader = pvEThPayload + sizeof(struct bcm_eth_llc_frame); + break; + case eEth802LLCSNAPFrame: + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802LLC SNAP Frame\n"); + pIpHeader = pvEThPayload + sizeof(struct bcm_eth_llc_snap_frame); + break; + case eEth802QVLANFrame: + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802.1Q VLANFrame\n"); + pIpHeader = pvEThPayload + sizeof(struct bcm_eth_q_frame); + break; + case eEthOtherFrame: + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : ETH Other Frame\n"); + pIpHeader = pvEThPayload + sizeof(struct bcm_ethernet2_frame); + break; + default: + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : Unrecognized ETH Frame\n"); + pIpHeader = pvEThPayload + sizeof(struct bcm_ethernet2_frame); + break; + } + + if (stEthCsPktInfo.eNwpktIPFrameType == eIPv4Packet) { + usCurrFragment = (ntohs(pIpHeader->frag_off) & IP_OFFSET); + if ((ntohs(pIpHeader->frag_off) & IP_MF) || usCurrFragment) + bFragmentedPkt = TRUE; + + if (bFragmentedPkt) { + //Fragmented Packet. Get Frag Classifier Entry. + pstClassifierRule = GetFragIPClsEntry(Adapter, pIpHeader->id, pIpHeader->saddr); + if (pstClassifierRule) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "It is next Fragmented pkt"); + bClassificationSucceed = TRUE; + } + if (!(ntohs(pIpHeader->frag_off) & IP_MF)) { + //Fragmented Last packet . Remove Frag Classifier Entry + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "This is the last fragmented Pkt"); + DelFragIPClsEntry(Adapter, pIpHeader->id, pIpHeader->saddr); + } + } + } + + for (uiLoopIndex = MAX_CLASSIFIERS - 1; uiLoopIndex >= 0; uiLoopIndex--) { + if (bClassificationSucceed) + break; + //Iterate through all classifiers which are already in order of priority + //to classify the packet until match found + do { + if (false == Adapter->astClassifierTable[uiLoopIndex].bUsed) { + bClassificationSucceed = false; + break; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Adapter->PackInfo[%d].bvalid=True\n", uiLoopIndex); + + if (0 == Adapter->astClassifierTable[uiLoopIndex].ucDirection) { + bClassificationSucceed = false;//cannot be processed for classification. + break; // it is a down link connection + } + + pstClassifierRule = &Adapter->astClassifierTable[uiLoopIndex]; + + uiSfIndex = SearchSfid(Adapter, pstClassifierRule->ulSFID); + if (uiSfIndex >= NO_OF_QUEUES) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Queue Not Valid. SearchSfid for this classifier Failed\n"); + break; + } + + if (Adapter->PackInfo[uiSfIndex].bEthCSSupport) { + + if (eEthUnsupportedFrame == stEthCsPktInfo.eNwpktEthFrameType) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, " ClassifyPacket : Packet Not a Valid Supported Ethernet Frame\n"); + bClassificationSucceed = false; + break; + } + + + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Performing ETH CS Classification on Classifier Rule ID : %x Service Flow ID : %lx\n", pstClassifierRule->uiClassifierRuleIndex, Adapter->PackInfo[uiSfIndex].ulSFID); + bClassificationSucceed = EThCSClassifyPkt(Adapter, skb, &stEthCsPktInfo, pstClassifierRule, Adapter->PackInfo[uiSfIndex].bEthCSSupport); + + if (!bClassificationSucceed) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : Ethernet CS Classification Failed\n"); + break; + } + } else { // No ETH Supported on this SF + if (eEthOtherFrame != stEthCsPktInfo.eNwpktEthFrameType) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, " ClassifyPacket : Packet Not a 802.3 Ethernet Frame... hence not allowed over non-ETH CS SF\n"); + bClassificationSucceed = false; + break; + } + } + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Proceeding to IP CS Clasification"); + + if (Adapter->PackInfo[uiSfIndex].bIPCSSupport) { + + if (stEthCsPktInfo.eNwpktIPFrameType == eNonIPPacket) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, " ClassifyPacket : Packet is Not an IP Packet\n"); + bClassificationSucceed = false; + break; + } + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Dump IP Header :\n"); + DumpFullPacket((PUCHAR)pIpHeader, 20); + + if (stEthCsPktInfo.eNwpktIPFrameType == eIPv4Packet) + bClassificationSucceed = IpVersion4(Adapter, pIpHeader, pstClassifierRule); + else if (stEthCsPktInfo.eNwpktIPFrameType == eIPv6Packet) + bClassificationSucceed = IpVersion6(Adapter, pIpHeader, pstClassifierRule); + } + + } while (0); + } + + if (bClassificationSucceed == TRUE) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "CF id : %d, SF ID is =%lu", pstClassifierRule->uiClassifierRuleIndex, pstClassifierRule->ulSFID); + + //Store The matched Classifier in SKB + *((UINT32*)(skb->cb)+SKB_CB_CLASSIFICATION_OFFSET) = pstClassifierRule->uiClassifierRuleIndex; + if ((TCP == pIpHeader->protocol) && !bFragmentedPkt && (ETH_AND_IP_HEADER_LEN + TCP_HEADER_LEN <= skb->len)) { + IpHeaderLength = pIpHeader->ihl; + pTcpHeader = (struct bcm_tcp_header *)(((PUCHAR)pIpHeader)+(IpHeaderLength*4)); + TcpHeaderLength = GET_TCP_HEADER_LEN(pTcpHeader->HeaderLength); + + if ((pTcpHeader->ucFlags & TCP_ACK) && + (ntohs(pIpHeader->tot_len) == (IpHeaderLength*4)+(TcpHeaderLength*4))) + *((UINT32*) (skb->cb) + SKB_CB_TCPACK_OFFSET) = TCP_ACK; + } + + usIndex = SearchSfid(Adapter, pstClassifierRule->ulSFID); + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "index is =%d", usIndex); + + //If this is the first fragment of a Fragmented pkt, add this CF. Only This CF should be used for all other fragment of this Pkt. + if (bFragmentedPkt && (usCurrFragment == 0)) { + //First Fragment of Fragmented Packet. Create Frag CLS Entry + struct bcm_fragmented_packet_info stFragPktInfo; + stFragPktInfo.bUsed = TRUE; + stFragPktInfo.ulSrcIpAddress = pIpHeader->saddr; + stFragPktInfo.usIpIdentification = pIpHeader->id; + stFragPktInfo.pstMatchedClassifierEntry = pstClassifierRule; + stFragPktInfo.bOutOfOrderFragment = false; + AddFragIPClsEntry(Adapter, &stFragPktInfo); + } + + + } + + if (bClassificationSucceed) + return usIndex; + else + return INVALID_QUEUE_INDEX; +} + +static bool EthCSMatchSrcMACAddress(struct bcm_classifier_rule *pstClassifierRule, PUCHAR Mac) +{ + UINT i = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + if (pstClassifierRule->ucEthCSSrcMACLen == 0) + return TRUE; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s\n", __func__); + for (i = 0; i < MAC_ADDRESS_SIZE; i++) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "SRC MAC[%x] = %x ClassifierRuleSrcMAC = %x Mask : %x\n", i, Mac[i], pstClassifierRule->au8EThCSSrcMAC[i], pstClassifierRule->au8EThCSSrcMACMask[i]); + if ((pstClassifierRule->au8EThCSSrcMAC[i] & pstClassifierRule->au8EThCSSrcMACMask[i]) != + (Mac[i] & pstClassifierRule->au8EThCSSrcMACMask[i])) + return false; + } + return TRUE; +} + +static bool EthCSMatchDestMACAddress(struct bcm_classifier_rule *pstClassifierRule, PUCHAR Mac) +{ + UINT i = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + if (pstClassifierRule->ucEthCSDestMACLen == 0) + return TRUE; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s\n", __func__); + for (i = 0; i < MAC_ADDRESS_SIZE; i++) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "SRC MAC[%x] = %x ClassifierRuleSrcMAC = %x Mask : %x\n", i, Mac[i], pstClassifierRule->au8EThCSDestMAC[i], pstClassifierRule->au8EThCSDestMACMask[i]); + if ((pstClassifierRule->au8EThCSDestMAC[i] & pstClassifierRule->au8EThCSDestMACMask[i]) != + (Mac[i] & pstClassifierRule->au8EThCSDestMACMask[i])) + return false; + } + return TRUE; +} + +static bool EthCSMatchEThTypeSAP(struct bcm_classifier_rule *pstClassifierRule, struct sk_buff* skb, struct bcm_eth_packet_info *pstEthCsPktInfo) +{ + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + if ((pstClassifierRule->ucEtherTypeLen == 0) || + (pstClassifierRule->au8EthCSEtherType[0] == 0)) + return TRUE; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s SrcEtherType:%x CLS EtherType[0]:%x\n", __func__, pstEthCsPktInfo->usEtherType, pstClassifierRule->au8EthCSEtherType[0]); + if (pstClassifierRule->au8EthCSEtherType[0] == 1) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s CLS EtherType[1]:%x EtherType[2]:%x\n", __func__, pstClassifierRule->au8EthCSEtherType[1], pstClassifierRule->au8EthCSEtherType[2]); + + if (memcmp(&pstEthCsPktInfo->usEtherType, &pstClassifierRule->au8EthCSEtherType[1], 2) == 0) + return TRUE; + else + return false; + } + + if (pstClassifierRule->au8EthCSEtherType[0] == 2) { + if (eEth802LLCFrame != pstEthCsPktInfo->eNwpktEthFrameType) + return false; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s EthCS DSAP:%x EtherType[2]:%x\n", __func__, pstEthCsPktInfo->ucDSAP, pstClassifierRule->au8EthCSEtherType[2]); + if (pstEthCsPktInfo->ucDSAP == pstClassifierRule->au8EthCSEtherType[2]) + return TRUE; + else + return false; + + } + + return false; + +} + +static bool EthCSMatchVLANRules(struct bcm_classifier_rule *pstClassifierRule, struct sk_buff* skb, struct bcm_eth_packet_info *pstEthCsPktInfo) +{ + bool bClassificationSucceed = false; + USHORT usVLANID; + B_UINT8 uPriority = 0; + struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(gblpnetdev); + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s CLS UserPrio:%x CLS VLANID:%x\n", __func__, ntohs(*((USHORT *)pstClassifierRule->usUserPriority)), pstClassifierRule->usVLANID); + + /* In case FW didn't receive the TLV, the priority field should be ignored */ + if (pstClassifierRule->usValidityBitMap & (1<<PKT_CLASSIFICATION_USER_PRIORITY_VALID)) { + if (pstEthCsPktInfo->eNwpktEthFrameType != eEth802QVLANFrame) + return false; + + uPriority = (ntohs(*(USHORT *)(skb->data + sizeof(struct bcm_eth_header))) & 0xF000) >> 13; + + if ((uPriority >= pstClassifierRule->usUserPriority[0]) && (uPriority <= pstClassifierRule->usUserPriority[1])) + bClassificationSucceed = TRUE; + + if (!bClassificationSucceed) + return false; + } + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS 802.1 D User Priority Rule Matched\n"); + + bClassificationSucceed = false; + + if (pstClassifierRule->usValidityBitMap & (1<<PKT_CLASSIFICATION_VLANID_VALID)) { + if (pstEthCsPktInfo->eNwpktEthFrameType != eEth802QVLANFrame) + return false; + + usVLANID = ntohs(*(USHORT *)(skb->data + sizeof(struct bcm_eth_header))) & 0xFFF; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s Pkt VLANID %x Priority: %d\n", __func__, usVLANID, uPriority); + + if (usVLANID == ((pstClassifierRule->usVLANID & 0xFFF0) >> 4)) + bClassificationSucceed = TRUE; + + if (!bClassificationSucceed) + return false; + } + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS 802.1 Q VLAN ID Rule Matched\n"); + + return TRUE; +} + + +static bool EThCSClassifyPkt(struct bcm_mini_adapter *Adapter, struct sk_buff* skb, + struct bcm_eth_packet_info *pstEthCsPktInfo, + struct bcm_classifier_rule *pstClassifierRule, + B_UINT8 EthCSCupport) +{ + bool bClassificationSucceed = false; + bClassificationSucceed = EthCSMatchSrcMACAddress(pstClassifierRule, ((struct bcm_eth_header *)(skb->data))->au8SourceAddress); + if (!bClassificationSucceed) + return false; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS SrcMAC Matched\n"); + + bClassificationSucceed = EthCSMatchDestMACAddress(pstClassifierRule, ((struct bcm_eth_header *)(skb->data))->au8DestinationAddress); + if (!bClassificationSucceed) + return false; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS DestMAC Matched\n"); + + //classify on ETHType/802.2SAP TLV + bClassificationSucceed = EthCSMatchEThTypeSAP(pstClassifierRule, skb, pstEthCsPktInfo); + if (!bClassificationSucceed) + return false; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS EthType/802.2SAP Matched\n"); + + //classify on 802.1VLAN Header Parameters + + bClassificationSucceed = EthCSMatchVLANRules(pstClassifierRule, skb, pstEthCsPktInfo); + if (!bClassificationSucceed) + return false; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ETH CS 802.1 VLAN Rules Matched\n"); + + return bClassificationSucceed; +} + +static void EThCSGetPktInfo(struct bcm_mini_adapter *Adapter, PVOID pvEthPayload, + struct bcm_eth_packet_info *pstEthCsPktInfo) +{ + USHORT u16Etype = ntohs(((struct bcm_eth_header *)pvEthPayload)->u16Etype); + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "EthCSGetPktInfo : Eth Hdr Type : %X\n", u16Etype); + if (u16Etype > 0x5dc) { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "EthCSGetPktInfo : ETH2 Frame\n"); + //ETH2 Frame + if (u16Etype == ETHERNET_FRAMETYPE_802QVLAN) { + //802.1Q VLAN Header + pstEthCsPktInfo->eNwpktEthFrameType = eEth802QVLANFrame; + u16Etype = ((struct bcm_eth_q_frame *)pvEthPayload)->EthType; + //((ETH_CS_802_Q_FRAME*)pvEthPayload)->UserPriority + } else { + pstEthCsPktInfo->eNwpktEthFrameType = eEthOtherFrame; + u16Etype = ntohs(u16Etype); + } + } else { + //802.2 LLC + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "802.2 LLC Frame\n"); + pstEthCsPktInfo->eNwpktEthFrameType = eEth802LLCFrame; + pstEthCsPktInfo->ucDSAP = ((struct bcm_eth_llc_frame *)pvEthPayload)->DSAP; + if (pstEthCsPktInfo->ucDSAP == 0xAA && ((struct bcm_eth_llc_frame *)pvEthPayload)->SSAP == 0xAA) { + //SNAP Frame + pstEthCsPktInfo->eNwpktEthFrameType = eEth802LLCSNAPFrame; + u16Etype = ((struct bcm_eth_llc_snap_frame *)pvEthPayload)->usEtherType; + } + } + if (u16Etype == ETHERNET_FRAMETYPE_IPV4) + pstEthCsPktInfo->eNwpktIPFrameType = eIPv4Packet; + else if (u16Etype == ETHERNET_FRAMETYPE_IPV6) + pstEthCsPktInfo->eNwpktIPFrameType = eIPv6Packet; + else + pstEthCsPktInfo->eNwpktIPFrameType = eNonIPPacket; + + pstEthCsPktInfo->usEtherType = ((struct bcm_eth_header *)pvEthPayload)->u16Etype; + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "EthCsPktInfo->eNwpktIPFrameType : %x\n", pstEthCsPktInfo->eNwpktIPFrameType); + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "EthCsPktInfo->eNwpktEthFrameType : %x\n", pstEthCsPktInfo->eNwpktEthFrameType); + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "EthCsPktInfo->usEtherType : %x\n", pstEthCsPktInfo->usEtherType); +} + + + |