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.. SPDX-License-Identifier: BSD-3-Clause
Copyright(c) 2010-2014 Intel Corporation.
Glossary
========
ACL
Access Control List
API
Application Programming Interface
ASLR
Linux* kernel Address-Space Layout Randomization
BSD
Berkeley Software Distribution
Clr
Clear
CIDR
Classless Inter-Domain Routing
Control Plane
The control plane is concerned with the routing of packets and with
providing a start or end point.
Core
A core may include several lcores or threads if the processor supports
hyperthreading.
Core Components
A set of libraries provided by the DPDK, including eal, ring, mempool,
mbuf, timers, and so on.
CPU
Central Processing Unit
CRC
Cyclic Redundancy Check
ctrlmbuf
An *mbuf* carrying control data.
Data Plane
In contrast to the control plane, the data plane in a network architecture
are the layers involved when forwarding packets. These layers must be
highly optimized to achieve good performance.
DIMM
Dual In-line Memory Module
Doxygen
A documentation generator used in the DPDK to generate the API reference.
DPDK
Data Plane Development Kit
DRAM
Dynamic Random Access Memory
EAL
The Environment Abstraction Layer (EAL) provides a generic interface that
hides the environment specifics from the applications and libraries. The
services expected from the EAL are: development kit loading and launching,
core affinity/ assignment procedures, system memory allocation/description,
PCI bus access, inter-partition communication.
FIFO
First In First Out
FPGA
Field Programmable Gate Array
GbE
Gigabit Ethernet
HW
Hardware
HPET
High Precision Event Timer; a hardware timer that provides a precise time
reference on x86 platforms.
ID
Identifier
IOCTL
Input/Output Control
I/O
Input/Output
IP
Internet Protocol
IPv4
Internet Protocol version 4
IPv6
Internet Protocol version 6
lcore
A logical execution unit of the processor, sometimes called a *hardware
thread*.
KNI
Kernel Network Interface
L1
Layer 1
L2
Layer 2
L3
Layer 3
L4
Layer 4
LAN
Local Area Network
LPM
Longest Prefix Match
master lcore
The execution unit that executes the main() function and that launches
other lcores.
mbuf
An mbuf is a data structure used internally to carry messages (mainly
network packets). The name is derived from BSD stacks. To understand the
concepts of packet buffers or mbuf, refer to *TCP/IP Illustrated, Volume 2:
The Implementation*.
MESI
Modified Exclusive Shared Invalid (CPU cache coherency protocol)
MTU
Maximum Transfer Unit
NIC
Network Interface Card
OOO
Out Of Order (execution of instructions within the CPU pipeline)
NUMA
Non-uniform Memory Access
PCI
Peripheral Connect Interface
PHY
An abbreviation for the physical layer of the OSI model.
pktmbuf
An *mbuf* carrying a network packet.
PMD
Poll Mode Driver
QoS
Quality of Service
RCU
Read-Copy-Update algorithm, an alternative to simple rwlocks.
Rd
Read
RED
Random Early Detection
RSS
Receive Side Scaling
RTE
Run Time Environment. Provides a fast and simple framework for fast packet
processing, in a lightweight environment as a Linux* application and using
Poll Mode Drivers (PMDs) to increase speed.
Rx
Reception
Slave lcore
Any *lcore* that is not the *master lcore*.
Socket
A physical CPU, that includes several *cores*.
SLA
Service Level Agreement
srTCM
Single Rate Three Color Marking
SRTD
Scheduler Round Trip Delay
SW
Software
Target
In the DPDK, the target is a combination of architecture, machine,
executive environment and toolchain. For example:
i686-native-linuxapp-gcc.
TCP
Transmission Control Protocol
TC
Traffic Class
TLB
Translation Lookaside Buffer
TLS
Thread Local Storage
trTCM
Two Rate Three Color Marking
TSC
Time Stamp Counter
Tx
Transmission
TUN/TAP
TUN and TAP are virtual network kernel devices.
VLAN
Virtual Local Area Network
Wr
Write
WRED
Weighted Random Early Detection
WRR
Weighted Round Robin
|
