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Table of Contents
Rev 6.9.1
Table of Contents
Document Revision History.................................................................................................................. 6
About This Manual ................................................................................................................................ 8
1
2
Introduction to VMA ...................................................................................................................... 10
1.1
VMA Overview ...................................................................................................................... 10
1.2
Basic Features ...................................................................................................................... 10
1.3
Target Applications ............................................................................................................... 10
1.4
Advanced VMA Features ...................................................................................................... 11
VMA Library Architecture ............................................................................................................. 12
2.1
Top-Level .............................................................................................................................. 12
2.2
Socket Types ........................................................................................................................ 12
3
Installing VMA ............................................................................................................................... 13
4
Configuring VMA ........................................................................................................................... 13
4.1
4.2
Configuring libvma.conf ........................................................................................................ 13
4.1.1
Configuring Target Application or Process ............................................................. 13
4.1.2
Configuring Socket Transport Control .................................................................... 14
4.1.3
Example of VMA Configuration............................................................................... 15
VMA Configuration Parameters ............................................................................................ 15
4.2.1
Configuration Parameter Values ............................................................................ 17
4.2.2
Beta Level Features Configuration Parameters ..................................................... 28
5
Using sockperf with VMA ............................................................................................................. 30
6
Example Running sockperf Ping-pong Test .............................................................................. 31
7
VMA Extra API ............................................................................................................................... 31
7.1
Overview of the VMA Extra API ............................................................................................ 31
7.2
Using VMA Extra API ........................................................................................................... 32
7.3
Control Off-load Capabilities During Run-Time .................................................................... 33
7.4
8
7.3.1
Adding libvma.conf Rules During Run-Time........................................................... 33
7.3.2
Creating Sockets as Off-loaded or Not-Off-loaded ................................................. 33
Packet Filtering ..................................................................................................................... 33
7.4.1
Zero Copy recvfrom() .............................................................................................. 34
7.4.2
Freeing Zero Copied Packet Buffers ...................................................................... 35
Debugging, Troubleshooting, and Monitoring ........................................................................... 37
8.1
Monitoring – the vma_stats Utility......................................................................................... 37
8.1.1
8.2
Examples ................................................................................................................ 38
Debugging ............................................................................................................................ 42
8.2.1
VMA Logs ............................................................................................................... 42
8.2.2
Ethernet Counters ................................................................................................... 42
3