glossary.rst revision 97f17497
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30
31Glossary
32========
33
34
35ACL
36   Access Control List
37
38API
39   Application Programming Interface
40
41ASLR
42   Linux* kernel Address-Space Layout Randomization
43
44BSD
45   Berkeley Software Distribution
46
47Clr
48   Clear
49
50CIDR
51   Classless Inter-Domain Routing
52
53Control Plane
54   The control plane is concerned with the routing of packets and with
55   providing a start or end point.
56
57Core
58   A core may include several lcores or threads if the processor supports
59   hyperthreading.
60
61Core Components
62   A set of libraries provided by the DPDK, including eal, ring, mempool,
63   mbuf, timers, and so on.
64
65CPU
66   Central Processing Unit
67
68CRC
69   Cyclic Redundancy Check
70
71ctrlmbuf
72   An *mbuf* carrying control data.
73
74Data Plane
75   In contrast to the control plane, the data plane in a network architecture
76   are the layers involved when forwarding packets.  These layers must be
77   highly optimized to achieve good performance.
78
79DIMM
80   Dual In-line Memory Module
81
82Doxygen
83   A documentation generator used in the DPDK to generate the API reference.
84
85DPDK
86   Data Plane Development Kit
87
88DRAM
89   Dynamic Random Access Memory
90
91EAL
92   The Environment Abstraction Layer (EAL) provides a generic interface that
93   hides the environment specifics from the applications and libraries.  The
94   services expected from the EAL are: development kit loading and launching,
95   core affinity/ assignment procedures, system memory allocation/description,
96   PCI bus access, inter-partition communication.
97
98FIFO
99   First In First Out
100
101FPGA
102   Field Programmable Gate Array
103
104GbE
105   Gigabit Ethernet
106
107HW
108   Hardware
109
110HPET
111   High Precision Event Timer; a hardware timer that provides a precise time
112   reference on x86 platforms.
113
114ID
115   Identifier
116
117IOCTL
118   Input/Output Control
119
120I/O
121   Input/Output
122
123IP
124   Internet Protocol
125
126IPv4
127   Internet Protocol version 4
128
129IPv6
130   Internet Protocol version 6
131
132lcore
133   A logical execution unit of the processor, sometimes called a *hardware
134   thread*.
135
136KNI
137   Kernel Network Interface
138
139L1
140   Layer 1
141
142L2
143   Layer 2
144
145L3
146   Layer 3
147
148L4
149   Layer 4
150
151LAN
152   Local Area Network
153
154LPM
155   Longest Prefix Match
156
157master lcore
158   The execution unit that executes the main() function and that launches
159   other lcores.
160
161mbuf
162   An mbuf is a data structure used internally to carry messages (mainly
163   network packets).  The name is derived from BSD stacks.  To understand the
164   concepts of packet buffers or mbuf, refer to *TCP/IP Illustrated, Volume 2:
165   The Implementation*.
166
167MESI
168   Modified Exclusive Shared Invalid (CPU cache coherency protocol)
169
170MTU
171   Maximum Transfer Unit
172
173NIC
174   Network Interface Card
175
176OOO
177   Out Of Order (execution of instructions within the CPU pipeline)
178
179NUMA
180   Non-uniform Memory Access
181
182PCI
183   Peripheral Connect Interface
184
185PHY
186   An abbreviation for the physical layer of the OSI model.
187
188pktmbuf
189   An *mbuf* carrying a network packet.
190
191PMD
192   Poll Mode Driver
193
194QoS
195   Quality of Service
196
197RCU
198   Read-Copy-Update algorithm, an alternative to simple rwlocks.
199
200Rd
201   Read
202
203RED
204   Random Early Detection
205
206RSS
207   Receive Side Scaling
208
209RTE
210   Run Time Environment. Provides a fast and simple framework for fast packet
211   processing, in a lightweight environment as a Linux* application and using
212   Poll Mode Drivers (PMDs) to increase speed.
213
214Rx
215   Reception
216
217Slave lcore
218   Any *lcore* that is not the *master lcore*.
219
220Socket
221   A physical CPU, that includes several *cores*.
222
223SLA
224   Service Level Agreement
225
226srTCM
227   Single Rate Three Color Marking
228
229SRTD
230   Scheduler Round Trip Delay
231
232SW
233   Software
234
235Target
236   In the DPDK, the target is a combination of architecture, machine,
237   executive environment and toolchain.  For example:
238   i686-native-linuxapp-gcc.
239
240TCP
241   Transmission Control Protocol
242
243TC
244   Traffic Class
245
246TLB
247   Translation Lookaside Buffer
248
249TLS
250   Thread Local Storage
251
252trTCM
253   Two Rate Three Color Marking
254
255TSC
256   Time Stamp Counter
257
258Tx
259   Transmission
260
261TUN/TAP
262   TUN and TAP are virtual network kernel devices.
263
264VLAN
265   Virtual Local Area Network
266
267Wr
268   Write
269
270WRED
271   Weighted Random Early Detection
272
273WRR
274   Weighted Round Robin
275