Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[pandora-kernel.git] / drivers / staging / bcm / Qos.c
1 /**
2 @file Qos.C
3 This file contains the routines related to Quality of Service.
4 */
5 #include "headers.h"
6
7 static void EThCSGetPktInfo(PMINI_ADAPTER Adapter,PVOID pvEthPayload,PS_ETHCS_PKT_INFO pstEthCsPktInfo);
8 static BOOLEAN EThCSClassifyPkt(PMINI_ADAPTER Adapter,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo,S_CLASSIFIER_RULE *pstClassifierRule, B_UINT8 EthCSCupport);
9
10 static USHORT   IpVersion4(PMINI_ADAPTER Adapter, struct iphdr *iphd,
11                            S_CLASSIFIER_RULE *pstClassifierRule );
12
13 static VOID PruneQueue(PMINI_ADAPTER Adapter, INT iIndex);
14
15
16 /*******************************************************************
17 * Function    - MatchSrcIpAddress()
18 *
19 * Description - Checks whether the Source IP address from the packet
20 *                               matches with that of Queue.
21 *
22 * Parameters  - pstClassifierRule: Pointer to the packet info structure.
23 *                         - ulSrcIP         : Source IP address from the packet.
24 *
25 * Returns     - TRUE(If address matches) else FAIL .
26 *********************************************************************/
27 BOOLEAN MatchSrcIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulSrcIP)
28 {
29     UCHAR       ucLoopIndex=0;
30
31     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
32
33     ulSrcIP=ntohl(ulSrcIP);
34     if(0 == pstClassifierRule->ucIPSourceAddressLength)
35         return TRUE;
36     for(ucLoopIndex=0; ucLoopIndex < (pstClassifierRule->ucIPSourceAddressLength);ucLoopIndex++)
37     {
38                 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]);
39                 if((pstClassifierRule->stSrcIpAddress.ulIpv4Mask[ucLoopIndex] & ulSrcIP)==
40                                 (pstClassifierRule->stSrcIpAddress.ulIpv4Addr[ucLoopIndex] & pstClassifierRule->stSrcIpAddress.ulIpv4Mask[ucLoopIndex] ))
41         {
42                 return TRUE;
43         }
44     }
45     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Ip Address Not Matched");
46         return FALSE;
47 }
48
49
50 /*******************************************************************
51 * Function    - MatchDestIpAddress()
52 *
53 * Description - Checks whether the Destination IP address from the packet
54 *                               matches with that of Queue.
55 *
56 * Parameters  - pstClassifierRule: Pointer to the packet info structure.
57 *                         - ulDestIP    : Destination IP address from the packet.
58 *
59 * Returns     - TRUE(If address matches) else FAIL .
60 *********************************************************************/
61 BOOLEAN MatchDestIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulDestIP)
62 {
63         UCHAR   ucLoopIndex=0;
64     PMINI_ADAPTER       Adapter = GET_BCM_ADAPTER(gblpnetdev);
65
66         ulDestIP=ntohl(ulDestIP);
67     if(0 == pstClassifierRule->ucIPDestinationAddressLength)
68         return TRUE;
69         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]);
70
71     for(ucLoopIndex=0;ucLoopIndex<(pstClassifierRule->ucIPDestinationAddressLength);ucLoopIndex++)
72     {
73                 if((pstClassifierRule->stDestIpAddress.ulIpv4Mask[ucLoopIndex] & ulDestIP)==
74                                         (pstClassifierRule->stDestIpAddress.ulIpv4Addr[ucLoopIndex] & pstClassifierRule->stDestIpAddress.ulIpv4Mask[ucLoopIndex]))
75         {
76                 return TRUE;
77         }
78     }
79         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination Ip Address Not Matched");
80     return FALSE;
81 }
82
83
84 /************************************************************************
85 * Function    - MatchTos()
86 *
87 * Description - Checks the TOS from the packet matches with that of queue.
88 *
89 * Parameters  - pstClassifierRule   : Pointer to the packet info structure.
90 *                         - ucTypeOfService: TOS from the packet.
91 *
92 * Returns     - TRUE(If address matches) else FAIL.
93 **************************************************************************/
94 BOOLEAN MatchTos(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucTypeOfService)
95 {
96
97         PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
98     if( 3 != pstClassifierRule->ucIPTypeOfServiceLength )
99         return TRUE;
100
101     if(((pstClassifierRule->ucTosMask & ucTypeOfService)<=pstClassifierRule->ucTosHigh) && ((pstClassifierRule->ucTosMask & ucTypeOfService)>=pstClassifierRule->ucTosLow))
102     {
103         return TRUE;
104     }
105     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Type Of Service Not Matched");
106     return FALSE;
107 }
108
109
110 /***************************************************************************
111 * Function    - MatchProtocol()
112 *
113 * Description - Checks the protocol from the packet matches with that of queue.
114 *
115 * Parameters  - pstClassifierRule: Pointer to the packet info structure.
116 *                         - ucProtocol  : Protocol from the packet.
117 *
118 * Returns     - TRUE(If address matches) else FAIL.
119 ****************************************************************************/
120 BOOLEAN MatchProtocol(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucProtocol)
121 {
122         UCHAR   ucLoopIndex=0;
123         PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
124         if(0 == pstClassifierRule->ucProtocolLength)
125         return TRUE;
126         for(ucLoopIndex=0;ucLoopIndex<pstClassifierRule->ucProtocolLength;ucLoopIndex++)
127     {
128         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol:0x%X Classification Protocol:0x%X",ucProtocol,pstClassifierRule->ucProtocol[ucLoopIndex]);
129         if(pstClassifierRule->ucProtocol[ucLoopIndex]==ucProtocol)
130         {
131                 return TRUE;
132         }
133     }
134     BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol Not Matched");
135         return FALSE;
136 }
137
138
139 /***********************************************************************
140 * Function    - MatchSrcPort()
141 *
142 * Description - Checks, Source port from the packet matches with that of queue.
143 *
144 * Parameters  - pstClassifierRule: Pointer to the packet info structure.
145 *                         - ushSrcPort  : Source port from the packet.
146 *
147 * Returns     - TRUE(If address matches) else FAIL.
148 ***************************************************************************/
149 BOOLEAN MatchSrcPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort)
150 {
151         UCHAR   ucLoopIndex=0;
152
153                 PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
154
155
156         if(0 == pstClassifierRule->ucSrcPortRangeLength)
157                 return TRUE;
158         for(ucLoopIndex=0;ucLoopIndex<pstClassifierRule->ucSrcPortRangeLength;ucLoopIndex++)
159         {
160                 if(ushSrcPort <= pstClassifierRule->usSrcPortRangeHi[ucLoopIndex] &&
161                     ushSrcPort >= pstClassifierRule->usSrcPortRangeLo[ucLoopIndex])
162                 {
163                         return TRUE;
164                 }
165         }
166                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Port: %x Not Matched ",ushSrcPort);
167         return FALSE;
168 }
169
170
171 /***********************************************************************
172 * Function    - MatchDestPort()
173 *
174 * Description - Checks, Destination port from packet matches with that of queue.
175 *
176 * Parameters  - pstClassifierRule: Pointer to the packet info structure.
177 *                         - ushDestPort : Destination port from the packet.
178 *
179 * Returns     - TRUE(If address matches) else FAIL.
180 ***************************************************************************/
181 BOOLEAN MatchDestPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushDestPort)
182 {
183         UCHAR   ucLoopIndex=0;
184                 PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
185
186         if(0 == pstClassifierRule->ucDestPortRangeLength)
187                 return TRUE;
188
189         for(ucLoopIndex=0;ucLoopIndex<pstClassifierRule->ucDestPortRangeLength;ucLoopIndex++)
190         {
191                 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]);
192
193                 if(ushDestPort <= pstClassifierRule->usDestPortRangeHi[ucLoopIndex] &&
194                     ushDestPort >= pstClassifierRule->usDestPortRangeLo[ucLoopIndex])
195                 {
196                     return TRUE;
197                 }
198         }
199                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Dest Port: %x Not Matched",ushDestPort);
200         return FALSE;
201 }
202 /**
203 @ingroup tx_functions
204 Compares IPV4 Ip address and port number
205 @return Queue Index.
206 */
207 static USHORT   IpVersion4(PMINI_ADAPTER Adapter,
208                            struct iphdr *iphd,
209                            S_CLASSIFIER_RULE *pstClassifierRule )
210 {
211         xporthdr                *xprt_hdr=NULL;
212         BOOLEAN bClassificationSucceed=FALSE;
213
214         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "========>");
215
216         xprt_hdr=(xporthdr *)((PUCHAR)iphd + sizeof(struct iphdr));
217
218         do {
219                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Trying to see Direction = %d %d",
220                         pstClassifierRule->ucDirection,
221                         pstClassifierRule->usVCID_Value);
222
223                 //Checking classifier validity
224                 if(!pstClassifierRule->bUsed || pstClassifierRule->ucDirection == DOWNLINK_DIR)
225                 {
226                         bClassificationSucceed = FALSE;
227                         break;
228                 }
229
230                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "is IPv6 check!");
231                 if(pstClassifierRule->bIpv6Protocol)
232                         break;
233
234                 //**************Checking IP header parameter**************************//
235                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Trying to match Source IP Address");
236                 if(FALSE == (bClassificationSucceed =
237                         MatchSrcIpAddress(pstClassifierRule, iphd->saddr)))
238                         break;
239                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Source IP Address Matched");
240
241                 if(FALSE == (bClassificationSucceed =
242                         MatchDestIpAddress(pstClassifierRule, iphd->daddr)))
243                         break;
244                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination IP Address Matched");
245
246                 if(FALSE == (bClassificationSucceed =
247                         MatchTos(pstClassifierRule, iphd->tos)))
248                 {
249                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "TOS Match failed\n");
250                         break;
251                 }
252                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "TOS Matched");
253
254                 if(FALSE == (bClassificationSucceed =
255                         MatchProtocol(pstClassifierRule,iphd->protocol)))
256                         break;
257                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Protocol Matched");
258
259                 //if protocol is not TCP or UDP then no need of comparing source port and destination port
260                 if(iphd->protocol!=TCP && iphd->protocol!=UDP)
261                         break;
262                 //******************Checking Transport Layer Header field if present *****************//
263                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Source Port %04x",
264                         (iphd->protocol==UDP)?xprt_hdr->uhdr.source:xprt_hdr->thdr.source);
265
266                 if(FALSE == (bClassificationSucceed =
267                         MatchSrcPort(pstClassifierRule,
268                                 ntohs((iphd->protocol == UDP)?
269                                 xprt_hdr->uhdr.source:xprt_hdr->thdr.source))))
270                         break;
271                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Src Port Matched");
272
273                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "Destination Port %04x",
274                         (iphd->protocol==UDP)?xprt_hdr->uhdr.dest:
275                         xprt_hdr->thdr.dest);
276                 if(FALSE == (bClassificationSucceed =
277                         MatchDestPort(pstClassifierRule,
278                         ntohs((iphd->protocol == UDP)?
279                         xprt_hdr->uhdr.dest:xprt_hdr->thdr.dest))))
280                         break;
281         } while(0);
282
283         if(TRUE==bClassificationSucceed)
284         {
285                 INT iMatchedSFQueueIndex = 0;
286                 iMatchedSFQueueIndex = SearchSfid(Adapter,pstClassifierRule->ulSFID);
287                 if(iMatchedSFQueueIndex >= NO_OF_QUEUES)
288                 {
289                         bClassificationSucceed = FALSE;
290                 }
291                 else
292                 {
293                         if(FALSE == Adapter->PackInfo[iMatchedSFQueueIndex].bActive)
294                         {
295                                 bClassificationSucceed = FALSE;
296                         }
297                 }
298         }
299
300         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "IpVersion4 <==========");
301
302         return bClassificationSucceed;
303 }
304
305 VOID PruneQueueAllSF(PMINI_ADAPTER Adapter)
306 {
307         UINT iIndex = 0;
308
309         for(iIndex = 0; iIndex < HiPriority; iIndex++)
310         {
311                 if(!Adapter->PackInfo[iIndex].bValid)
312                         continue;
313
314                 PruneQueue(Adapter, iIndex);
315         }
316 }
317
318
319 /**
320 @ingroup tx_functions
321 This function checks if the max queue size for a queue
322 is less than number of bytes in the queue. If so -
323 drops packets from the Head till the number of bytes is
324 less than or equal to max queue size for the queue.
325 */
326 static VOID PruneQueue(PMINI_ADAPTER Adapter, INT iIndex)
327 {
328         struct sk_buff* PacketToDrop=NULL;
329         struct net_device_stats *netstats;
330
331         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "=====> Index %d",iIndex);
332
333         if(iIndex == HiPriority)
334                 return;
335
336         if(!Adapter || (iIndex < 0) || (iIndex > HiPriority))
337                 return;
338
339         /* To Store the netdevice statistic */
340         netstats = &Adapter->dev->stats;
341
342         spin_lock_bh(&Adapter->PackInfo[iIndex].SFQueueLock);
343
344         while(1)
345 //      while((UINT)Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost >
346 //              SF_MAX_ALLOWED_PACKETS_TO_BACKUP)
347         {
348                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "uiCurrentBytesOnHost:%x uiMaxBucketSize :%x",
349                 Adapter->PackInfo[iIndex].uiCurrentBytesOnHost,
350                 Adapter->PackInfo[iIndex].uiMaxBucketSize);
351
352                 PacketToDrop = Adapter->PackInfo[iIndex].FirstTxQueue;
353
354                 if(PacketToDrop == NULL)
355                         break;
356                 if((Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost < SF_MAX_ALLOWED_PACKETS_TO_BACKUP) &&
357                         ((1000*(jiffies - *((B_UINT32 *)(PacketToDrop->cb)+SKB_CB_LATENCY_OFFSET))/HZ) <= Adapter->PackInfo[iIndex].uiMaxLatency))
358                         break;
359
360                 if(PacketToDrop)
361                 {
362                         if (netif_msg_tx_err(Adapter))
363                                 pr_info(PFX "%s: tx queue %d overlimit\n", 
364                                         Adapter->dev->name, iIndex);
365
366                         netstats->tx_dropped++;
367
368                         DEQUEUEPACKET(Adapter->PackInfo[iIndex].FirstTxQueue,
369                                                 Adapter->PackInfo[iIndex].LastTxQueue);
370                         /// update current bytes and packets count
371                         Adapter->PackInfo[iIndex].uiCurrentBytesOnHost -=
372                                 PacketToDrop->len;
373                         Adapter->PackInfo[iIndex].uiCurrentPacketsOnHost--;
374                         /// update dropped bytes and packets counts
375                         Adapter->PackInfo[iIndex].uiDroppedCountBytes += PacketToDrop->len;
376                         Adapter->PackInfo[iIndex].uiDroppedCountPackets++;
377                         dev_kfree_skb(PacketToDrop);
378
379                 }
380
381                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "Dropped Bytes:%x Dropped Packets:%x",
382                         Adapter->PackInfo[iIndex].uiDroppedCountBytes,
383                         Adapter->PackInfo[iIndex].uiDroppedCountPackets);
384
385                 atomic_dec(&Adapter->TotalPacketCount);
386         }
387
388         spin_unlock_bh(&Adapter->PackInfo[iIndex].SFQueueLock);
389
390         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "TotalPacketCount:%x",
391                 atomic_read(&Adapter->TotalPacketCount));
392         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, PRUNE_QUEUE, DBG_LVL_ALL, "<=====");
393 }
394
395 VOID flush_all_queues(PMINI_ADAPTER Adapter)
396 {
397         INT             iQIndex;
398         UINT    uiTotalPacketLength;
399         struct sk_buff*                 PacketToDrop=NULL;
400
401         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "=====>");
402
403 //      down(&Adapter->data_packet_queue_lock);
404         for(iQIndex=LowPriority; iQIndex<HiPriority; iQIndex++)
405         {
406                 struct net_device_stats *netstats = &Adapter->dev->stats;
407
408                 spin_lock_bh(&Adapter->PackInfo[iQIndex].SFQueueLock);
409                 while(Adapter->PackInfo[iQIndex].FirstTxQueue)
410                 {
411                         PacketToDrop = Adapter->PackInfo[iQIndex].FirstTxQueue;
412                         if(PacketToDrop)
413                         {
414                                 uiTotalPacketLength = PacketToDrop->len;
415                                 netstats->tx_dropped++;
416                         }
417                         else
418                                 uiTotalPacketLength = 0;
419
420                         DEQUEUEPACKET(Adapter->PackInfo[iQIndex].FirstTxQueue,
421                                                 Adapter->PackInfo[iQIndex].LastTxQueue);
422
423                         /* Free the skb */
424                         dev_kfree_skb(PacketToDrop);
425
426                         /// update current bytes and packets count
427                         Adapter->PackInfo[iQIndex].uiCurrentBytesOnHost -= uiTotalPacketLength;
428                         Adapter->PackInfo[iQIndex].uiCurrentPacketsOnHost--;
429
430                         /// update dropped bytes and packets counts
431                         Adapter->PackInfo[iQIndex].uiDroppedCountBytes += uiTotalPacketLength;
432                         Adapter->PackInfo[iQIndex].uiDroppedCountPackets++;
433
434                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "Dropped Bytes:%x Dropped Packets:%x",
435                                         Adapter->PackInfo[iQIndex].uiDroppedCountBytes,
436                                         Adapter->PackInfo[iQIndex].uiDroppedCountPackets);
437                         atomic_dec(&Adapter->TotalPacketCount);
438                 }
439                 spin_unlock_bh(&Adapter->PackInfo[iQIndex].SFQueueLock);
440         }
441 //      up(&Adapter->data_packet_queue_lock);
442         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, DUMP_INFO, DBG_LVL_ALL, "<=====");
443 }
444
445 USHORT ClassifyPacket(PMINI_ADAPTER Adapter,struct sk_buff* skb)
446 {
447         INT                     uiLoopIndex=0;
448         S_CLASSIFIER_RULE *pstClassifierRule = NULL;
449         S_ETHCS_PKT_INFO stEthCsPktInfo;
450         PVOID pvEThPayload = NULL;
451         struct iphdr            *pIpHeader = NULL;
452         INT       uiSfIndex=0;
453         USHORT  usIndex=Adapter->usBestEffortQueueIndex;
454         BOOLEAN bFragmentedPkt=FALSE,bClassificationSucceed=FALSE;
455         USHORT  usCurrFragment =0;
456
457         PTCP_HEADER pTcpHeader;
458         UCHAR IpHeaderLength;
459         UCHAR TcpHeaderLength;
460
461         pvEThPayload = skb->data;
462         *((UINT32*) (skb->cb) +SKB_CB_TCPACK_OFFSET ) = 0;
463         EThCSGetPktInfo(Adapter,pvEThPayload,&stEthCsPktInfo);
464
465         switch(stEthCsPktInfo.eNwpktEthFrameType)
466         {
467                 case eEth802LLCFrame:
468                 {
469                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802LLCFrame\n");
470             pIpHeader = pvEThPayload + sizeof(ETH_CS_802_LLC_FRAME);
471                         break;
472                 }
473
474                 case eEth802LLCSNAPFrame:
475                 {
476                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802LLC SNAP Frame\n");
477                         pIpHeader = pvEThPayload + sizeof(ETH_CS_802_LLC_SNAP_FRAME);
478                         break;
479                 }
480                 case eEth802QVLANFrame:
481                 {
482                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : 802.1Q VLANFrame\n");
483                         pIpHeader = pvEThPayload + sizeof(ETH_CS_802_Q_FRAME);
484                         break;
485                 }
486                 case eEthOtherFrame:
487                 {
488                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : ETH Other Frame\n");
489                         pIpHeader = pvEThPayload + sizeof(ETH_CS_ETH2_FRAME);
490                         break;
491                 }
492                 default:
493                 {
494                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "ClassifyPacket : Unrecognized ETH Frame\n");
495                         pIpHeader = pvEThPayload + sizeof(ETH_CS_ETH2_FRAME);
496                         break;
497                 }
498         }
499
500         if(stEthCsPktInfo.eNwpktIPFrameType == eIPv4Packet)
501         {
502                 usCurrFragment = (ntohs(pIpHeader->frag_off) & IP_OFFSET);
503                 if((ntohs(pIpHeader->frag_off) & IP_MF) || usCurrFragment)
504                         bFragmentedPkt = TRUE;
505
506                 if(bFragmentedPkt)
507                 {
508                                 //Fragmented  Packet. Get Frag Classifier Entry.
509                         pstClassifierRule = GetFragIPClsEntry(Adapter,pIpHeader->id, pIpHeader->saddr);
510                         if(pstClassifierRule)
511                         {
512                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,"It is next Fragmented pkt");
513                                         bClassificationSucceed=TRUE;
514                         }
515                         if(!(ntohs(pIpHeader->frag_off) & IP_MF))
516                         {
517                                 //Fragmented Last packet . Remove Frag Classifier Entry
518                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,"This is the last fragmented Pkt");
519                                 DelFragIPClsEntry(Adapter,pIpHeader->id, pIpHeader->saddr);
520                         }
521                 }
522         }
523
524         for(uiLoopIndex = MAX_CLASSIFIERS - 1; uiLoopIndex >= 0; uiLoopIndex--)
525         {
526                 if(bClassificationSucceed)
527                         break;
528                 //Iterate through all classifiers which are already in order of priority
529                 //to classify the packet until match found
530                 do
531                 {
532                         if(FALSE==Adapter->astClassifierTable[uiLoopIndex].bUsed)
533                         {
534                                 bClassificationSucceed=FALSE;
535                                 break;
536                         }
537                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "Adapter->PackInfo[%d].bvalid=True\n",uiLoopIndex);
538
539                         if(0 == Adapter->astClassifierTable[uiLoopIndex].ucDirection)
540                         {
541                                 bClassificationSucceed=FALSE;//cannot be processed for classification.
542                                 break;                                          // it is a down link connection
543                         }
544
545                         pstClassifierRule = &Adapter->astClassifierTable[uiLoopIndex];
546
547                         uiSfIndex = SearchSfid(Adapter,pstClassifierRule->ulSFID);
548                         if (uiSfIndex >= NO_OF_QUEUES) {
549                                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "Queue Not Valid. SearchSfid for this classifier Failed\n");
550                                 break;
551                         }
552
553                         if(Adapter->PackInfo[uiSfIndex].bEthCSSupport)
554                         {
555
556                                 if(eEthUnsupportedFrame==stEthCsPktInfo.eNwpktEthFrameType)
557                                 {
558                                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  " ClassifyPacket : Packet Not a Valid Supported Ethernet Frame \n");
559                                         bClassificationSucceed = FALSE;
560                                         break;
561                                 }
562
563
564
565                                 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);
566                                 bClassificationSucceed = EThCSClassifyPkt(Adapter,skb,&stEthCsPktInfo,pstClassifierRule, Adapter->PackInfo[uiSfIndex].bEthCSSupport);
567
568                                 if(!bClassificationSucceed)
569                                 {
570                                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ClassifyPacket : Ethernet CS Classification Failed\n");
571                                         break;
572                                 }
573                         }
574
575                         else // No ETH Supported on this SF
576                         {
577                                 if(eEthOtherFrame != stEthCsPktInfo.eNwpktEthFrameType)
578                                 {
579                                         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");
580                                         bClassificationSucceed = FALSE;
581                                         break;
582                                 }
583                         }
584
585                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "Proceeding to IP CS Clasification");
586
587                         if(Adapter->PackInfo[uiSfIndex].bIPCSSupport)
588                         {
589
590                                 if(stEthCsPktInfo.eNwpktIPFrameType == eNonIPPacket)
591                                 {
592                                         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  " ClassifyPacket : Packet is Not an IP Packet \n");
593                                         bClassificationSucceed = FALSE;
594                                         break;
595                                 }
596                                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "Dump IP Header : \n");
597                                 DumpFullPacket((PUCHAR)pIpHeader,20);
598
599                                 if(stEthCsPktInfo.eNwpktIPFrameType == eIPv4Packet)
600                                         bClassificationSucceed = IpVersion4(Adapter,pIpHeader,pstClassifierRule);
601                                 else if(stEthCsPktInfo.eNwpktIPFrameType == eIPv6Packet)
602                                         bClassificationSucceed = IpVersion6(Adapter,pIpHeader,pstClassifierRule);
603                         }
604
605                 }while(0);
606         }
607
608         if(bClassificationSucceed == TRUE)
609         {
610                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "CF id : %d, SF ID is =%lu",pstClassifierRule->uiClassifierRuleIndex, pstClassifierRule->ulSFID);
611
612                 //Store The matched Classifier in SKB
613                 *((UINT32*)(skb->cb)+SKB_CB_CLASSIFICATION_OFFSET) = pstClassifierRule->uiClassifierRuleIndex;
614                 if((TCP == pIpHeader->protocol ) && !bFragmentedPkt && (ETH_AND_IP_HEADER_LEN + TCP_HEADER_LEN <= skb->len) )
615                 {
616                          IpHeaderLength   = pIpHeader->ihl;
617                          pTcpHeader = (PTCP_HEADER)(((PUCHAR)pIpHeader)+(IpHeaderLength*4));
618                          TcpHeaderLength  = GET_TCP_HEADER_LEN(pTcpHeader->HeaderLength);
619
620                         if((pTcpHeader->ucFlags & TCP_ACK) &&
621                            (ntohs(pIpHeader->tot_len) == (IpHeaderLength*4)+(TcpHeaderLength*4)))
622                         {
623                         *((UINT32*) (skb->cb) +SKB_CB_TCPACK_OFFSET ) = TCP_ACK;
624                         }
625                 }
626
627                 usIndex = SearchSfid(Adapter, pstClassifierRule->ulSFID);
628                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL, "index is   =%d", usIndex);
629
630                 //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.
631                 if(bFragmentedPkt && (usCurrFragment == 0))
632                 {
633                         //First Fragment of Fragmented Packet. Create Frag CLS Entry
634                         S_FRAGMENTED_PACKET_INFO stFragPktInfo;
635                         stFragPktInfo.bUsed = TRUE;
636                         stFragPktInfo.ulSrcIpAddress = pIpHeader->saddr;
637                         stFragPktInfo.usIpIdentification = pIpHeader->id;
638                         stFragPktInfo.pstMatchedClassifierEntry = pstClassifierRule;
639                         stFragPktInfo.bOutOfOrderFragment = FALSE;
640                         AddFragIPClsEntry(Adapter,&stFragPktInfo);
641                 }
642
643
644         }
645
646         if(bClassificationSucceed)
647                 return usIndex;
648         else
649                 return INVALID_QUEUE_INDEX;
650 }
651
652 static BOOLEAN EthCSMatchSrcMACAddress(S_CLASSIFIER_RULE *pstClassifierRule,PUCHAR Mac)
653 {
654         UINT i=0;
655     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
656         if(pstClassifierRule->ucEthCSSrcMACLen==0)
657                 return TRUE;
658         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "%s \n",__FUNCTION__);
659         for(i=0;i<MAC_ADDRESS_SIZE;i++)
660         {
661                 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]);
662                 if((pstClassifierRule->au8EThCSSrcMAC[i] & pstClassifierRule->au8EThCSSrcMACMask[i])!=
663                         (Mac[i] & pstClassifierRule->au8EThCSSrcMACMask[i]))
664                         return FALSE;
665         }
666         return TRUE;
667 }
668
669 static BOOLEAN EthCSMatchDestMACAddress(S_CLASSIFIER_RULE *pstClassifierRule,PUCHAR Mac)
670 {
671         UINT i=0;
672     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
673         if(pstClassifierRule->ucEthCSDestMACLen==0)
674                 return TRUE;
675         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "%s \n",__FUNCTION__);
676         for(i=0;i<MAC_ADDRESS_SIZE;i++)
677         {
678                 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]);
679                 if((pstClassifierRule->au8EThCSDestMAC[i] & pstClassifierRule->au8EThCSDestMACMask[i])!=
680                         (Mac[i] & pstClassifierRule->au8EThCSDestMACMask[i]))
681                         return FALSE;
682         }
683         return TRUE;
684 }
685
686 static BOOLEAN EthCSMatchEThTypeSAP(S_CLASSIFIER_RULE *pstClassifierRule,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo)
687 {
688     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
689         if((pstClassifierRule->ucEtherTypeLen==0)||
690                 (pstClassifierRule->au8EthCSEtherType[0] == 0))
691                 return TRUE;
692
693         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]);
694         if(pstClassifierRule->au8EthCSEtherType[0] == 1)
695         {
696                 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]);
697
698                 if(memcmp(&pstEthCsPktInfo->usEtherType,&pstClassifierRule->au8EthCSEtherType[1],2)==0)
699                         return TRUE;
700                 else
701                         return FALSE;
702         }
703
704         if(pstClassifierRule->au8EthCSEtherType[0] == 2)
705         {
706                 if(eEth802LLCFrame != pstEthCsPktInfo->eNwpktEthFrameType)
707                         return FALSE;
708
709                 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]);
710                 if(pstEthCsPktInfo->ucDSAP == pstClassifierRule->au8EthCSEtherType[2])
711                         return TRUE;
712                 else
713                         return FALSE;
714
715         }
716
717         return FALSE;
718
719 }
720
721 static BOOLEAN EthCSMatchVLANRules(S_CLASSIFIER_RULE *pstClassifierRule,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo)
722 {
723         BOOLEAN bClassificationSucceed = FALSE;
724         USHORT usVLANID;
725         B_UINT8 uPriority = 0;
726     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
727
728         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);
729
730         /* In case FW didn't receive the TLV, the priority field should be ignored */
731         if(pstClassifierRule->usValidityBitMap & (1<<PKT_CLASSIFICATION_USER_PRIORITY_VALID))
732         {
733                 if(pstEthCsPktInfo->eNwpktEthFrameType!=eEth802QVLANFrame)
734                                 return FALSE;
735
736                 uPriority = (ntohs(*(USHORT *)(skb->data + sizeof(ETH_HEADER_STRUC))) & 0xF000) >> 13;
737
738                 if((uPriority >= pstClassifierRule->usUserPriority[0]) && (uPriority <= pstClassifierRule->usUserPriority[1]))
739                                 bClassificationSucceed = TRUE;
740
741                 if(!bClassificationSucceed)
742                         return FALSE;
743         }
744
745         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS 802.1 D  User Priority Rule Matched\n");
746
747         bClassificationSucceed = FALSE;
748
749         if(pstClassifierRule->usValidityBitMap & (1<<PKT_CLASSIFICATION_VLANID_VALID))
750         {
751                 if(pstEthCsPktInfo->eNwpktEthFrameType!=eEth802QVLANFrame)
752                                 return FALSE;
753
754                 usVLANID = ntohs(*(USHORT *)(skb->data + sizeof(ETH_HEADER_STRUC))) & 0xFFF;
755
756                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "%s  Pkt VLANID %x Priority: %d\n",__FUNCTION__,usVLANID, uPriority);
757
758                 if(usVLANID == ((pstClassifierRule->usVLANID & 0xFFF0) >> 4))
759                         bClassificationSucceed = TRUE;
760
761                 if(!bClassificationSucceed)
762                         return FALSE;
763         }
764
765         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS 802.1 Q VLAN ID Rule Matched\n");
766
767         return TRUE;
768 }
769
770
771 static BOOLEAN EThCSClassifyPkt(PMINI_ADAPTER Adapter,struct sk_buff* skb,
772                                 PS_ETHCS_PKT_INFO pstEthCsPktInfo,
773                                 S_CLASSIFIER_RULE *pstClassifierRule,
774                                 B_UINT8 EthCSCupport)
775 {
776         BOOLEAN bClassificationSucceed = FALSE;
777         bClassificationSucceed = EthCSMatchSrcMACAddress(pstClassifierRule,((ETH_HEADER_STRUC *)(skb->data))->au8SourceAddress);
778         if(!bClassificationSucceed)
779                 return FALSE;
780         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS SrcMAC Matched\n");
781
782         bClassificationSucceed = EthCSMatchDestMACAddress(pstClassifierRule,((ETH_HEADER_STRUC*)(skb->data))->au8DestinationAddress);
783         if(!bClassificationSucceed)
784                 return FALSE;
785         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS DestMAC Matched\n");
786
787         //classify on ETHType/802.2SAP TLV
788         bClassificationSucceed = EthCSMatchEThTypeSAP(pstClassifierRule,skb,pstEthCsPktInfo);
789         if(!bClassificationSucceed)
790                 return FALSE;
791
792         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS EthType/802.2SAP Matched\n");
793
794         //classify on 802.1VLAN Header Parameters
795
796         bClassificationSucceed = EthCSMatchVLANRules(pstClassifierRule,skb,pstEthCsPktInfo);
797         if(!bClassificationSucceed)
798                 return FALSE;
799         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "ETH CS 802.1 VLAN Rules Matched\n");
800
801         return bClassificationSucceed;
802 }
803
804 static void EThCSGetPktInfo(PMINI_ADAPTER Adapter,PVOID pvEthPayload,
805                             PS_ETHCS_PKT_INFO pstEthCsPktInfo)
806 {
807         USHORT u16Etype = ntohs(((ETH_HEADER_STRUC*)pvEthPayload)->u16Etype);
808
809         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "EthCSGetPktInfo : Eth Hdr Type : %X\n",u16Etype);
810         if(u16Etype > 0x5dc)
811         {
812                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "EthCSGetPktInfo : ETH2 Frame \n");
813                 //ETH2 Frame
814                 if(u16Etype == ETHERNET_FRAMETYPE_802QVLAN)
815                 {
816                         //802.1Q VLAN Header
817                         pstEthCsPktInfo->eNwpktEthFrameType = eEth802QVLANFrame;
818                         u16Etype = ((ETH_CS_802_Q_FRAME*)pvEthPayload)->EthType;
819                         //((ETH_CS_802_Q_FRAME*)pvEthPayload)->UserPriority
820                 }
821                 else
822                 {
823                         pstEthCsPktInfo->eNwpktEthFrameType = eEthOtherFrame;
824                         u16Etype = ntohs(u16Etype);
825                 }
826
827         }
828         else
829         {
830                 //802.2 LLC
831                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "802.2 LLC Frame \n");
832                 pstEthCsPktInfo->eNwpktEthFrameType = eEth802LLCFrame;
833                 pstEthCsPktInfo->ucDSAP = ((ETH_CS_802_LLC_FRAME*)pvEthPayload)->DSAP;
834                 if(pstEthCsPktInfo->ucDSAP == 0xAA && ((ETH_CS_802_LLC_FRAME*)pvEthPayload)->SSAP == 0xAA)
835                 {
836                         //SNAP Frame
837                         pstEthCsPktInfo->eNwpktEthFrameType = eEth802LLCSNAPFrame;
838                         u16Etype = ((ETH_CS_802_LLC_SNAP_FRAME*)pvEthPayload)->usEtherType;
839                 }
840         }
841         if(u16Etype == ETHERNET_FRAMETYPE_IPV4)
842                 pstEthCsPktInfo->eNwpktIPFrameType = eIPv4Packet;
843         else if(u16Etype == ETHERNET_FRAMETYPE_IPV6)
844                 pstEthCsPktInfo->eNwpktIPFrameType = eIPv6Packet;
845         else
846                 pstEthCsPktInfo->eNwpktIPFrameType = eNonIPPacket;
847
848         pstEthCsPktInfo->usEtherType = ((ETH_HEADER_STRUC*)pvEthPayload)->u16Etype;
849         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "EthCsPktInfo->eNwpktIPFrameType : %x\n",pstEthCsPktInfo->eNwpktIPFrameType);
850         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "EthCsPktInfo->eNwpktEthFrameType : %x\n",pstEthCsPktInfo->eNwpktEthFrameType);
851         BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, IPV4_DBG, DBG_LVL_ALL,  "EthCsPktInfo->usEtherType : %x\n",pstEthCsPktInfo->usEtherType);
852 }
853
854
855