-
Notifications
You must be signed in to change notification settings - Fork 1
/
rxqueue.cpp
442 lines (351 loc) · 12.4 KB
/
rxqueue.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
#include "precomp.h"
#include "device.h"
#include "trace.h"
#include "adapter.h"
#include "rxqueue.h"
#include "interrupt.h"
#include "link.h"
//#define DBGPRINT_ADVANCE DBGPRINT
#define DBGPRINT_ADVANCE(...)
_Use_decl_annotations_
NTSTATUS
EvtAdapterCreateRxQueue(
_In_ NETADAPTER netAdapter,
_Inout_ NETRXQUEUE_INIT* rxQueueInit)
{
NET_EXTENSION_QUERY extension;
NTSTATUS status = STATUS_SUCCESS;
DBGPRINT("EvtAdapterCreateRxQueue\n");
IGB_ADAPTER* adapter = IgbGetAdapterContext(netAdapter);
WDF_OBJECT_ATTRIBUTES rxAttributes;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&rxAttributes, IGB_RXQUEUE);
rxAttributes.EvtDestroyCallback = EvtRxQueueDestroy;
NET_PACKET_QUEUE_CONFIG rxConfig;
NET_PACKET_QUEUE_CONFIG_INIT(
&rxConfig,
EvtRxQueueAdvance,
EvtRxQueueSetNotificationEnabled,
EvtRxQueueCancel);
rxConfig.EvtStart = EvtRxQueueStart;
rxConfig.EvtStop = EvtRxQueueStop;
const ULONG queueId = NetRxQueueInitGetQueueId(rxQueueInit);
NETPACKETQUEUE rxQueue;
GOTO_IF_NOT_NT_SUCCESS(Exit, status,
NetRxQueueCreate(rxQueueInit, &rxAttributes, &rxConfig, &rxQueue));
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
rx->QueueId = queueId;
NET_EXTENSION_QUERY_INIT(
&extension,
NET_FRAGMENT_EXTENSION_LOGICAL_ADDRESS_NAME,
NET_FRAGMENT_EXTENSION_LOGICAL_ADDRESS_VERSION_1,
NetExtensionTypeFragment);
NetRxQueueGetExtension(rxQueue, &extension, &rx->LogicalAddressExtension);
NET_EXTENSION_QUERY_INIT(
&extension,
NET_PACKET_EXTENSION_CHECKSUM_NAME,
NET_PACKET_EXTENSION_CHECKSUM_VERSION_1,
NetExtensionTypePacket);
NetRxQueueGetExtension(rxQueue, &extension, &rx->ChecksumExtension);
NET_EXTENSION_QUERY_INIT(
&extension,
NET_PACKET_EXTENSION_IEEE8021Q_NAME,
NET_PACKET_EXTENSION_IEEE8021Q_VERSION_1,
NetExtensionTypePacket);
NetRxQueueGetExtension(rxQueue, &extension, &rx->Ieee8021qExtension);
GOTO_IF_NOT_NT_SUCCESS(Exit, status,
IgbRxQueueInitialize(rxQueue, adapter));
Exit:
DBGPRINT("EvtAdapterCreateRxQueue = %x\n", status);
return status;
}
void
RxIndicateReceives(
_In_ IGB_RXQUEUE* rx)
{
DBGPRINT_ADVANCE("RxIndicateReceives\n");
NET_RING* pr = NetRingCollectionGetPacketRing(rx->Rings);
NET_RING* fr = NetRingCollectionGetFragmentRing(rx->Rings);
while (fr->BeginIndex != fr->NextIndex)
{
UINT32 const fragmentIndex = fr->BeginIndex;
union e1000_adv_rx_desc const* rxd = &rx->RxdBase[fragmentIndex];
if ((rxd->wb.upper.status_error & E1000_RXD_STAT_DD) == 0)
break;
if (pr->BeginIndex == pr->EndIndex)
break;
// If there is a packet available we are guaranteed to have a fragment as well
NT_FRE_ASSERT(fr->BeginIndex != fr->EndIndex);
NET_FRAGMENT* fragment = NetRingGetFragmentAtIndex(fr, fragmentIndex);
fragment->ValidLength = rxd->wb.upper.length;
fragment->Capacity = fragment->ValidLength;
fragment->Offset = 0;
// Link fragment and packet
UINT32 const packetIndex = pr->BeginIndex;
NET_PACKET* packet = NetRingGetPacketAtIndex(pr, packetIndex);
packet->FragmentIndex = fragmentIndex;
packet->FragmentCount = 1;
if (rx->Ieee8021qExtension.Enabled)
{
NET_PACKET_IEEE8021Q* ieee8021q = NetExtensionGetPacketIeee8021Q(&rx->Ieee8021qExtension, packetIndex);
if ((rxd->wb.upper.status_error & E1000_RXD_STAT_VP) == 0)
{
u16 vlanId = rxd->wb.upper.vlan;
ieee8021q->PriorityCodePoint = vlanId >> 13;
ieee8021q->VlanIdentifier = vlanId & 0xfff;
}
}
if (rx->ChecksumExtension.Enabled)
{
NET_PACKET_CHECKSUM* checksum = NetExtensionGetPacketChecksum(&rx->ChecksumExtension, packetIndex);
u32 ptype = rxd->wb.lower.lo_dword.data & (E1000_RXDADV_PKTTYPE_ILMASK | E1000_RXDADV_PKTTYPE_TLMASK);
packet->Layout.Layer2Type = NetPacketLayer2TypeEthernet;
if (rx->Adapter->RxIpHwChkSum)
{
if ((ptype & E1000_RXDADV_PKTTYPE_IPV4) == E1000_RXDADV_PKTTYPE_IPV4)
packet->Layout.Layer3Type = NetPacketLayer3TypeIPv4NoOptions;
else if ((ptype & E1000_RXDADV_PKTTYPE_IPV4_EX) == E1000_RXDADV_PKTTYPE_IPV4_EX)
packet->Layout.Layer3Type = NetPacketLayer3TypeIPv4WithOptions;
else if ((ptype & E1000_RXDADV_PKTTYPE_IPV6) == E1000_RXDADV_PKTTYPE_IPV6)
packet->Layout.Layer3Type = NetPacketLayer3TypeIPv6NoExtensions;
else if ((ptype & E1000_RXDADV_PKTTYPE_IPV6_EX) == E1000_RXDADV_PKTTYPE_IPV6_EX)
packet->Layout.Layer3Type = NetPacketLayer3TypeIPv6WithExtensions;
else
packet->Layout.Layer3Type = NetPacketLayer3TypeUnspecified;
if ((rxd->wb.upper.status_error & E1000_RXD_STAT_IPCS) != 0)
{
if ((rxd->wb.upper.status_error & E1000_RXDEXT_STATERR_IPE) == 0)
checksum->Layer3 = NetPacketRxChecksumEvaluationValid;
else
checksum->Layer3 = NetPacketRxChecksumEvaluationInvalid;
}
}
if (rx->Adapter->RxTcpHwChkSum && (ptype & E1000_RXDADV_PKTTYPE_TCP) == E1000_RXDADV_PKTTYPE_TCP)
{
packet->Layout.Layer4Type = NetPacketLayer4TypeTcp;
if ((rxd->wb.upper.status_error & E1000_RXD_STAT_TCPCS) != 0)
{
if ((rxd->wb.upper.status_error & E1000_RXDEXT_STATERR_TCPE) == 0)
checksum->Layer4 = NetPacketRxChecksumEvaluationValid;
else
checksum->Layer4 = NetPacketRxChecksumEvaluationInvalid;
}
}
if (rx->Adapter->RxUdpHwChkSum && (ptype & E1000_RXDADV_PKTTYPE_UDP) == E1000_RXDADV_PKTTYPE_UDP)
{
packet->Layout.Layer4Type = NetPacketLayer4TypeUdp;
if ((rxd->wb.upper.status_error & E1000_RXD_STAT_UDPCS) != 0)
{
if ((rxd->wb.upper.status_error & E1000_RXDEXT_STATERR_TCPE) == 0)
checksum->Layer4 = NetPacketRxChecksumEvaluationValid;
else
checksum->Layer4 = NetPacketRxChecksumEvaluationInvalid;
}
}
}
packet->Layout.Layer2Type = NetPacketLayer2TypeEthernet;
pr->BeginIndex = NetRingIncrementIndex(pr, pr->BeginIndex);
fr->BeginIndex = NetRingIncrementIndex(fr, fr->BeginIndex);
}
}
static
void
IgbPostRxDescriptor(
_In_ union e1000_adv_rx_desc* desc,
_In_ NET_FRAGMENT_LOGICAL_ADDRESS const* logicalAddress)
{
RtlZeroMemory(desc, sizeof(*desc));
desc->read.pkt_addr = logicalAddress->LogicalAddress;
desc->read.hdr_addr = 0;
MemoryBarrier();
}
void
RxPostBuffers(
_In_ IGB_RXQUEUE* rx)
{
DBGPRINT_ADVANCE("RxPostBuffers\n");
NET_RING* fr = NetRingCollectionGetFragmentRing(rx->Rings);
while (fr->NextIndex != fr->EndIndex)
{
UINT32 const index = fr->NextIndex;
IgbPostRxDescriptor(
&rx->RxdBase[index],
NetExtensionGetFragmentLogicalAddress(&rx->LogicalAddressExtension, index));
E1000_WRITE_REG(&rx->Adapter->Hw, E1000_RDT(rx->QueueId), index);
fr->NextIndex = NetRingIncrementIndex(fr, fr->NextIndex);
}
}
NTSTATUS
IgbRxQueueInitialize(
_In_ NETPACKETQUEUE rxQueue,
_In_ IGB_ADAPTER* adapter
)
{
NTSTATUS status = STATUS_SUCCESS;
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
DBGPRINT("IntelRxQueueInitialize\n");
rx->Adapter = adapter;
rx->InterruptHandle = adapter->MsiInterrupts > 1 ? adapter->Interrupts[rx->QueueId]->Handle : adapter->MiscInterrupt->Handle;
rx->Rings = NetRxQueueGetRingCollection(rxQueue);
// allocate descriptors
NET_RING* pr = NetRingCollectionGetPacketRing(rx->Rings);
NET_RING* fr = NetRingCollectionGetFragmentRing(rx->Rings);
rx->NumRxDesc = (USHORT)(fr->NumberOfElements > 4096 ? 4096 : fr->NumberOfElements);
ULONG rxSize;
GOTO_IF_NOT_NT_SUCCESS(Exit, status,
RtlULongMult(rx->NumRxDesc, sizeof(union e1000_adv_rx_desc), &rxSize));
UINT32 const rxdSize = pr->NumberOfElements * sizeof(union e1000_adv_rx_desc);
GOTO_IF_NOT_NT_SUCCESS(Exit, status,
WdfCommonBufferCreate(
rx->Adapter->DmaEnabler,
rxdSize,
WDF_NO_OBJECT_ATTRIBUTES,
&rx->RxdArray));
rx->RxdBase = static_cast<union e1000_adv_rx_desc*>(WdfCommonBufferGetAlignedVirtualAddress(rx->RxdArray));
rx->RxdSize = rxdSize;
Exit:
DBGPRINT("IntelRxQueueInitialize = %x\n", status);
return status;
}
void
IgbRxQueueSetInterrupt(
_In_ IGB_RXQUEUE* rx,
_In_ BOOLEAN notificationEnabled)
{
WdfInterruptAcquireLock(rx->InterruptHandle);
E1000_WRITE_REG(&rx->Adapter->Hw, notificationEnabled ? E1000_EIMS : E1000_EIMC, 1 << rx->QueueId);
E1000_WRITE_FLUSH(&rx->Adapter->Hw);
WdfInterruptReleaseLock(rx->InterruptHandle);
if (!notificationEnabled)
{
// block this thread until we're sure any outstanding DPCs are complete.
// This is to guarantee we don't return from this function call until
// any outstanding rx notification is complete.
KeFlushQueuedDpcs();
}
}
_Use_decl_annotations_
void
EvtRxQueueStart(
NETPACKETQUEUE rxQueue)
{
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
IGB_ADAPTER* adapter = rx->Adapter;
struct e1000_hw* hw = &rx->Adapter->Hw;
u32 srrctl;
DBGPRINT("EvtRxQueueStart\n");
ASSERT(rx->QueueId < IGB_MAX_RX_QUEUES);
RtlZeroMemory(rx->RxdBase, rx->RxdSize);
PHYSICAL_ADDRESS pa = WdfCommonBufferGetAlignedLogicalAddress(rx->RxdArray);
// Disable receives
u32 rctl = E1000_READ_REG(hw, E1000_RCTL);
E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
// Use advanced descriptor format without header split/replication
srrctl = E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
rctl &= ~E1000_RCTL_LPE;
rctl |= E1000_RCTL_SZ_2048;
E1000_WRITE_REG(hw, E1000_RDLEN(rx->QueueId), rx->RxdSize);
E1000_WRITE_REG(hw, E1000_RDBAH(rx->QueueId), (u32)pa.HighPart);
E1000_WRITE_REG(hw, E1000_RDBAL(rx->QueueId), (u32)pa.LowPart);
E1000_WRITE_REG(hw, E1000_SRRCTL(rx->QueueId), srrctl);
// Setup the Receive Control Register
rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
(hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
// Strip CRC bytes.
rctl |= E1000_RCTL_SECRC;
// Make sure VLAN Filters are off
rctl &= ~E1000_RCTL_VFE;
// Don't store bad packets
rctl &= ~E1000_RCTL_SBP;
// Enable this Queue
u32 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(rx->QueueId));
rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
rxdctl &= 0xFFF00000;
rxdctl |= /*IGB_RX_PTHRESH*/8;
rxdctl |= /*IGB_RX_HTHRESH*/8 << 8;
rxdctl |= /*IGB_RX_WTHRESH*/1 << 16;
E1000_WRITE_REG(hw, E1000_RXDCTL(rx->QueueId), rxdctl);
WdfSpinLockAcquire(adapter->Lock);
adapter->RxQueues[rx->QueueId] = rxQueue;
WdfSpinLockRelease(adapter->Lock);
// Enable Receives
E1000_WRITE_REG(hw, E1000_RCTL, rctl);
// Heads & tails?
E1000_WRITE_REG(hw, E1000_RDH(rx->QueueId), 0);
E1000_WRITE_REG(hw, E1000_RDT(rx->QueueId), rx->NumRxDesc - 1);
}
_Use_decl_annotations_
VOID
EvtRxQueueStop(
NETPACKETQUEUE rxQueue)
{
DBGPRINT("EvtRxQueueStop\n");
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
ASSERT(rx->QueueId < IGB_MAX_RX_QUEUES);
WdfSpinLockAcquire(rx->Adapter->Lock);
IgbRxQueueSetInterrupt(rx, false);
rx->Adapter->RxQueues[rx->QueueId] = WDF_NO_HANDLE;
WdfSpinLockRelease(rx->Adapter->Lock);
}
_Use_decl_annotations_
VOID
EvtRxQueueDestroy(
_In_ WDFOBJECT rxQueue)
{
DBGPRINT("EvtRxQueueDestroy\n");
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
if (rx->RxdArray)
WdfObjectDelete(rx->RxdArray);
rx->RxdArray = NULL;
}
_Use_decl_annotations_
VOID
EvtRxQueueSetNotificationEnabled(
_In_ NETPACKETQUEUE rxQueue,
_In_ BOOLEAN notificationEnabled)
{
DBGPRINT_ADVANCE("EvtRxQueueSetNotificationEnabled\n");
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
IgbRxQueueSetInterrupt(rx, notificationEnabled);
}
_Use_decl_annotations_
VOID
EvtRxQueueAdvance(
_In_ NETPACKETQUEUE rxQueue)
{
DBGPRINT_ADVANCE("EvtRxQueueAdvance\n");
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
RxIndicateReceives(rx);
RxPostBuffers(rx);
DBGPRINT_ADVANCE("EvtRxQueueAdvance done\n");
}
_Use_decl_annotations_
VOID
EvtRxQueueCancel(
_In_ NETPACKETQUEUE rxQueue)
{
DBGPRINT("EvtRxQueueCancel\n");
IGB_RXQUEUE* rx = IgbGetRxQueueContext(rxQueue);
struct e1000_hw* hw = &rx->Adapter->Hw;
WdfSpinLockAcquire(rx->Adapter->Lock);
// Disable the queue
u32 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(rx->QueueId));
rxdctl &= ~E1000_RXDCTL_QUEUE_ENABLE;
E1000_WRITE_REG(hw, E1000_RXDCTL(rx->QueueId), rxdctl);
WdfSpinLockRelease(rx->Adapter->Lock);
// try (but not very hard) to grab anything that may have been
// indicated during rx disable. advance will continue to be called
// after cancel until all packets are returned to the framework.
RxIndicateReceives(rx);
DBGPRINT("EvtRxQueueCancel - in the middle\n");
NET_RING* pr = NetRingCollectionGetPacketRing(rx->Rings);
while (pr->BeginIndex != pr->EndIndex)
{
NET_PACKET* packet = NetRingGetPacketAtIndex(pr, pr->BeginIndex);
packet->Ignore = 1;
pr->BeginIndex = NetRingIncrementIndex(pr, pr->BeginIndex);
}
NET_RING* fr = NetRingCollectionGetFragmentRing(rx->Rings);
fr->BeginIndex = fr->EndIndex;
DBGPRINT("EvtRxQueueCancel - done\n");
}