-
Notifications
You must be signed in to change notification settings - Fork 23
/
netringiterator.h
283 lines (236 loc) · 5.5 KB
/
netringiterator.h
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
#pragma once
// Copyright (C) Microsoft Corporation. All rights reserved.
#pragma once
#include <net/ringcollection.h>
typedef struct _NET_RING_ITERATOR
{
NET_RING_COLLECTION const*
Rings;
UINT32* const
IndexToSet;
UINT32
Index;
UINT32 const
End;
} NET_RING_ITERATOR;
typedef struct _NET_RING_PACKET_ITERATOR
{
NET_RING_ITERATOR
Iterator;
} NET_RING_PACKET_ITERATOR;
typedef struct _NET_RING_FRAGMENT_ITERATOR
{
NET_RING_ITERATOR
Iterator;
} NET_RING_FRAGMENT_ITERATOR;
inline
NET_RING_PACKET_ITERATOR
NetRingGetPostPackets(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypePacket];
NET_RING_PACKET_ITERATOR iterator = {
Rings, &ring->NextIndex, ring->NextIndex, ring->EndIndex,
};
return iterator;
}
inline
NET_RING_PACKET_ITERATOR
NetRingGetDrainPackets(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypePacket];
NET_RING_PACKET_ITERATOR iterator = {
Rings, &ring->BeginIndex, ring->BeginIndex, ring->NextIndex,
};
return iterator;
}
inline
NET_RING_PACKET_ITERATOR
NetRingGetAllPackets(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypePacket];
NET_RING_PACKET_ITERATOR iterator = {
Rings, &ring->BeginIndex, ring->BeginIndex, ring->EndIndex,
};
return iterator;
}
inline
NET_PACKET*
NetPacketIteratorGetPacket(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
return NetRingGetPacketAtIndex(
Iterator->Iterator.Rings->Rings[NetRingTypePacket],
Iterator->Iterator.Index);
}
inline
UINT32
NetPacketIteratorGetIndex(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
return Iterator->Iterator.Index;
}
inline
BOOLEAN
NetPacketIteratorHasAny(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
return Iterator->Iterator.Index != Iterator->Iterator.End;
}
inline
UINT32
NetPacketIteratorGetCount(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
NET_RING const* ring = Iterator->Iterator.Rings->Rings[NetRingTypePacket];
return (Iterator->Iterator.End - Iterator->Iterator.Index) & ring->ElementIndexMask;
}
inline
void
NetPacketIteratorAdvance(
_In_ NET_RING_PACKET_ITERATOR* Iterator
)
{
Iterator->Iterator.Index = NetRingIncrementIndex(
Iterator->Iterator.Rings->Rings[NetRingTypePacket],
Iterator->Iterator.Index);
}
inline
void
NetPacketIteratorAdvanceToTheEnd(
_In_ NET_RING_PACKET_ITERATOR* Iterator
)
{
Iterator->Iterator.Index = Iterator->Iterator.End;
}
inline
void
NetPacketIteratorSet(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
*Iterator->Iterator.IndexToSet
= Iterator->Iterator.Index;
}
inline
NET_RING_FRAGMENT_ITERATOR
NetPacketIteratorGetFragments(
_In_ NET_RING_PACKET_ITERATOR const* Iterator
)
{
NET_RING const* ring = Iterator->Iterator.Rings->Rings[NetRingTypeFragment];
NET_PACKET const* packet = NetPacketIteratorGetPacket(Iterator);
UINT32 const end = NetRingIncrementIndex(ring,
packet->FragmentIndex + packet->FragmentCount - 1);
NET_RING_FRAGMENT_ITERATOR iterator = {
Iterator->Iterator.Rings, NULL, packet->FragmentIndex, end,
};
return iterator;
}
inline
NET_RING_FRAGMENT_ITERATOR
NetRingGetPostFragments(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypeFragment];
NET_RING_FRAGMENT_ITERATOR iterator = {
Rings, &ring->NextIndex, ring->NextIndex, ring->EndIndex,
};
return iterator;
}
inline
NET_RING_FRAGMENT_ITERATOR
NetRingGetDrainFragments(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypeFragment];
NET_RING_FRAGMENT_ITERATOR iterator = {
Rings, &ring->BeginIndex, ring->BeginIndex, ring->NextIndex,
};
return iterator;
}
inline
NET_RING_FRAGMENT_ITERATOR
NetRingGetAllFragments(
_In_ NET_RING_COLLECTION const* Rings
)
{
NET_RING* ring = Rings->Rings[NetRingTypeFragment];
NET_RING_FRAGMENT_ITERATOR iterator = {
Rings, &ring->BeginIndex, ring->BeginIndex, ring->EndIndex,
};
return iterator;
}
inline
NET_FRAGMENT*
NetFragmentIteratorGetFragment(
_In_ NET_RING_FRAGMENT_ITERATOR const* Iterator
)
{
return NetRingGetFragmentAtIndex(
Iterator->Iterator.Rings->Rings[NetRingTypeFragment],
Iterator->Iterator.Index);
}
inline
UINT32
NetFragmentIteratorGetIndex(
_In_ NET_RING_FRAGMENT_ITERATOR const* Iterator
)
{
return Iterator->Iterator.Index;
}
inline
BOOLEAN
NetFragmentIteratorHasAny(
_In_ NET_RING_FRAGMENT_ITERATOR const* Iterator
)
{
return Iterator->Iterator.Index != Iterator->Iterator.End;
}
inline
UINT32
NetFragmentIteratorGetCount(
_In_ NET_RING_FRAGMENT_ITERATOR const* Iterator
)
{
NET_RING const* ring = Iterator->Iterator.Rings->Rings[NetRingTypeFragment];
return (Iterator->Iterator.End - Iterator->Iterator.Index) & ring->ElementIndexMask;
}
inline
void
NetFragmentIteratorAdvance(
_In_ NET_RING_FRAGMENT_ITERATOR* Iterator
)
{
Iterator->Iterator.Index = NetRingIncrementIndex(
Iterator->Iterator.Rings->Rings[NetRingTypeFragment],
Iterator->Iterator.Index);
}
inline
void
NetFragmentIteratorAdvanceToTheEnd(
_In_ NET_RING_FRAGMENT_ITERATOR* Iterator
)
{
Iterator->Iterator.Index = Iterator->Iterator.End;
}
inline
void
NetFragmentIteratorSet(
_In_ NET_RING_FRAGMENT_ITERATOR const* Iterator
)
{
*(Iterator->Iterator.IndexToSet)
= Iterator->Iterator.Index;
}