39. 术语¶
- ACL
- 访问控制列表
- API
- 应用程序编程接口
- ASLR
- Linux内核地址空间布局
- BSD
- 伯克利软件
- Clr
- Clear
- CIDR
- 无类别域间路由
- Control Plane
- 控制面
- Core
- 如果处理器支持超线程，则内核可能包含多个内核或线程。
- Core Components
- DPDK提供的一组库，包括 eal, ring, mempool, mbuf, timers等扥。
- CPU
- Central Processing Unit
- CRC
- Cyclic Redundancy Check
- ctrlmbuf
- 携带控制数据的 mbuf 。
- Data Plane
- 数据面，在网络架构层中对应于控制面，负责转发报文。这层必须具有很高的性能。
- DIMM
- Dual In-line Memory Module
- Doxygen
- DPDK中用于生成API参考的文档生成器。
- 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 和 TAP 是虚拟的网络内核设备。
- VLAN
- Virtual Local Area Network
- Wr
- Write
- WRED
- 加权随机早丢弃
- WRR
- 加权轮询