diff options
Diffstat (limited to 'drivers/staging/bcm/Qos.c')
| -rw-r--r-- | drivers/staging/bcm/Qos.c | 892 |
1 files changed, 892 insertions, 0 deletions
diff --git a/drivers/staging/bcm/Qos.c b/drivers/staging/bcm/Qos.c new file mode 100644 index 000000000000..75b2b879633f --- /dev/null +++ b/drivers/staging/bcm/Qos.c @@ -0,0 +1,892 @@ +/** +@file Qos.C +This file contains the routines related to Quality of Service. +*/ +#include "headers.h" + +BOOLEAN MatchSrcIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulSrcIP); +BOOLEAN MatchTos(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucTypeOfService); +BOOLEAN MatchSrcPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort); +BOOLEAN MatchDestPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushDestPort); +BOOLEAN MatchProtocol(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucProtocol); +BOOLEAN MatchDestIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulDestIP); +USHORT ClassifyPacket(PMINI_ADAPTER Adapter,struct sk_buff* skb); +void EThCSGetPktInfo(PMINI_ADAPTER Adapter,PVOID pvEthPayload,PS_ETHCS_PKT_INFO pstEthCsPktInfo); +BOOLEAN EThCSClassifyPkt(PMINI_ADAPTER Adapter,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo,S_CLASSIFIER_RULE *pstClassifierRule, B_UINT8 EthCSCupport); + +/******************************************************************* +* 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 . +*********************************************************************/ +BOOLEAN MatchSrcIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulSrcIP) +{ + UCHAR ucLoopIndex=0; + + PMINI_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 . +*********************************************************************/ +BOOLEAN MatchDestIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulDestIP) +{ + UCHAR ucLoopIndex=0; + PMINI_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. +**************************************************************************/ +BOOLEAN MatchTos(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucTypeOfService) +{ + + PMINI_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. +****************************************************************************/ +BOOLEAN MatchProtocol(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucProtocol) +{ + UCHAR ucLoopIndex=0; + PMINI_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. +***************************************************************************/ +BOOLEAN MatchSrcPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort) +{ + UCHAR ucLoopIndex=0; + + PMINI_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. +***************************************************************************/ +BOOLEAN MatchDestPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushDestPort) +{ + UCHAR ucLoopIndex=0; + PMINI_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. +*/ +USHORT IpVersion4(PMINI_ADAPTER Adapter, /**< Pointer to the driver control structure */ + struct iphdr *iphd, /**<Pointer to the IP Hdr of the packet*/ + S_CLASSIFIER_RULE *pstClassifierRule ) +{ + //IPHeaderFormat *pIpHeader=NULL; + xporthdr *xprt_hdr=NULL; + BOOLEAN bClassificationSucceed=FALSE; + + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "========>"); + + xprt_hdr=(xporthdr *)((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) + { + bClassificationSucceed = FALSE; + 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(FALSE == (bClassificationSucceed = + MatchSrcIpAddress(pstClassifierRule, iphd->saddr))) + break; + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Source IP Address Matched"); + + if(FALSE == (bClassificationSucceed = + MatchDestIpAddress(pstClassifierRule, iphd->daddr))) + break; + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination IP Address Matched"); + + if(FALSE == (bClassificationSucceed = + 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(FALSE == (bClassificationSucceed = + 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) + break; +#if 0 + //check if memory is available of src and Dest port + if(ETH_AND_IP_HEADER_LEN + L4_SRC_PORT_LEN + L4_DEST_PORT_LEN > Packet->len) + { + //This is not an erroneous condition and pkt will be checked for next classification. + bClassificationSucceed = FALSE; + break; + } +#endif + //******************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(FALSE == (bClassificationSucceed = + 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(FALSE == (bClassificationSucceed = + MatchDestPort(pstClassifierRule, + ntohs((iphd->protocol == UDP)? + xprt_hdr->uhdr.dest:xprt_hdr->thdr.dest)))) + break; + } 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; +} +/** +@ingroup tx_functions +@return Queue Index based on priority. +*/ +USHORT GetPacketQueueIndex(PMINI_ADAPTER Adapter, /**<Pointer to the driver control structure */ + struct sk_buff* Packet /**< Pointer to the Packet to be sent*/ + ) +{ + USHORT usIndex=-1; + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "=====>"); + + if(NULL==Adapter || NULL==Packet) + { + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "Got NULL Values<======"); + return -1; + } + + usIndex = ClassifyPacket(Adapter,Packet); + + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "Got Queue Index %x",usIndex); + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "GetPacketQueueIndex <=============="); + return usIndex; +} + +VOID PruneQueueAllSF(PMINI_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. +*/ +VOID PruneQueue(PMINI_ADAPTER Adapter,/**<Pointer to the driver control structure*/ + INT iIndex/**<Queue Index*/ + ) +{ + struct sk_buff* PacketToDrop=NULL; + struct net_device_stats* netstats=NULL; + + 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 = &((PLINUX_DEP_DATA)Adapter->pvOsDepData)->netstats; + + 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(netstats) + netstats->tx_dropped++; + atomic_inc(&Adapter->TxDroppedPacketCount); + 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++; + bcm_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); + Adapter->bcm_jiffies = jiffies; + } + + 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(PMINI_ADAPTER Adapter) +{ + INT iQIndex; + UINT uiTotalPacketLength; + struct sk_buff* PacketToDrop=NULL; + struct net_device_stats* netstats=NULL; + + BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "=====>"); + /* To Store the netdevice statistic */ + netstats = &((PLINUX_DEP_DATA)Adapter->pvOsDepData)->netstats; + +// down(&Adapter->data_packet_queue_lock); + for(iQIndex=LowPriority; iQIndex<HiPriority; iQIndex++) + { + 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++; + atomic_inc(&Adapter->TxDroppedPacketCount); + } + else + uiTotalPacketLength = 0; + + DEQUEUEPACKET(Adapter->PackInfo[iQIndex].FirstTxQueue, + Adapter->PackInfo[iQIndex].LastTxQueue); + + /* Free the skb */ + bcm_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(PMINI_ADAPTER Adapter,struct sk_buff* skb) +{ + INT uiLoopIndex=0; + S_CLASSIFIER_RULE *pstClassifierRule = NULL; + S_ETHCS_PKT_INFO stEthCsPktInfo; + PVOID pvEThPayload = NULL; + struct iphdr *pIpHeader = NULL; + INT uiSfIndex=0; + USHORT usIndex=Adapter->usBestEffortQueueIndex; + BOOLEAN bFragmentedPkt=FALSE,bClassificationSucceed=FALSE; + USHORT usCurrFragment =0; + + PTCP_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(ETH_CS_802_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(ETH_CS_802_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(ETH_CS_802_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(ETH_CS_ETH2_FRAME); + break; + } + default: + { + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : Unrecognized ETH Frame\n"); + pIpHeader = pvEThPayload + sizeof(ETH_CS_ETH2_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 (Adapter->device_removed) + { + bClassificationSucceed = FALSE; + break; + } + + 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 = (PTCP_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 + S_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 BOOLEAN EthCSMatchSrcMACAddress(S_CLASSIFIER_RULE *pstClassifierRule,PUCHAR Mac) +{ + UINT i=0; + PMINI_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",__FUNCTION__); + 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 BOOLEAN EthCSMatchDestMACAddress(S_CLASSIFIER_RULE *pstClassifierRule,PUCHAR Mac) +{ + UINT i=0; + PMINI_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",__FUNCTION__); + 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 BOOLEAN EthCSMatchEThTypeSAP(S_CLASSIFIER_RULE *pstClassifierRule,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo) +{ + PMINI_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",__FUNCTION__,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",__FUNCTION__,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",__FUNCTION__,pstEthCsPktInfo->ucDSAP,pstClassifierRule->au8EthCSEtherType[2]); + if(pstEthCsPktInfo->ucDSAP == pstClassifierRule->au8EthCSEtherType[2]) + return TRUE; + else + return FALSE; + + } + + return FALSE; + +} + +static BOOLEAN EthCSMatchVLANRules(S_CLASSIFIER_RULE *pstClassifierRule,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo) +{ + BOOLEAN bClassificationSucceed = FALSE; + USHORT usVLANID; + B_UINT8 uPriority = 0; + PMINI_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",__FUNCTION__,ntohs(*((USHORT *)pstClassifierRule->usUserPriority)),pstClassifierRule->usVLANID); + + /* In case FW didn't recieve 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(ETH_HEADER_STRUC))) & 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(ETH_HEADER_STRUC))) & 0xFFF; + + BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "%s Pkt VLANID %x Priority: %d\n",__FUNCTION__,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; +} + + +BOOLEAN EThCSClassifyPkt(PMINI_ADAPTER Adapter,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo,S_CLASSIFIER_RULE *pstClassifierRule, B_UINT8 EthCSCupport) +{ + BOOLEAN bClassificationSucceed = FALSE; + bClassificationSucceed = EthCSMatchSrcMACAddress(pstClassifierRule,((ETH_HEADER_STRUC *)(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,((ETH_HEADER_STRUC*)(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; +} + +void EThCSGetPktInfo(PMINI_ADAPTER Adapter,PVOID pvEthPayload,PS_ETHCS_PKT_INFO pstEthCsPktInfo) +{ + USHORT u16Etype = ntohs(((ETH_HEADER_STRUC*)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 = ((ETH_CS_802_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 = ((ETH_CS_802_LLC_FRAME*)pvEthPayload)->DSAP; + if(pstEthCsPktInfo->ucDSAP == 0xAA && ((ETH_CS_802_LLC_FRAME*)pvEthPayload)->SSAP == 0xAA) + { + //SNAP Frame + pstEthCsPktInfo->eNwpktEthFrameType = eEth802LLCSNAPFrame; + u16Etype = ((ETH_CS_802_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 = ((ETH_HEADER_STRUC*)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); +} + + + |