Wireshark in a Multi-Core Environment Using Hardware Acceleration

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Host-based TransmitHigh-speed host-based transmit can be used for:• Retransmit of captured data• Replay of data that have been captured and stored to a file• Generation of trafficThe inter frame gap between transmitted frames can be controlled with high precision(typically better than 20 ns).A captured frame can be retransmitted without modifying the packet descriptor:• A captured frame inside a segment buffer can be skipped (on transmitted) by flipping a single bitin the standard descriptor.The adapter can be set up to:• Either generate a new Ethernet CRC for transmitted frames, or• Transmit the frames with the Ethernet CRC in the host memory:• Being the Ethernet CRC of the received frame or• An Ethernet CRC generated by a host application.Ethernet CRC generation can be configured on a per-frame basis.Frames can be transmitted at the speed supported by the PCI interface:• For 8-lane PCIe typically 10-12 Gbps.• High-speed transmit is supported for all frame sizes.Napatech - Sharkfest 200926
Napatech LibPCAP LibraryThe Napatech LipPCAP is based on the LipPCAP 0.9.8 releaseDelivered as open source ready to configure and compile.Linux and FreeBSD supportedSupport for all feed configurations supported by the NT adapters:• Packet feeds can be configured at driver load time• Feeds are configured using simple NTPL syntax.• Feeds are started and stopped through libpcapFull support for protocol filters and deduplication configuration viaNTPL scripts.Snaplen (-s) option translated to slicing in hardwareNapatech - Sharkfest 200927
Page 5 and 6: What problem does hardware accelera
Page 7 and 8: Adapter ArchitectureTime Stamp &GPS
Page 9 and 10: Merging of Streams, ContinuedThe Na
Page 11 and 12: OS Bypass, Zero CopyAll Napatech ad
Page 13 and 14: Large Host Buffers, ContinuedNapate
Page 15 and 16: Feature Details - DescriptorsPCAP d
Page 17 and 18: Programmable Adapter FiltersFilter
Page 19 and 20: Fixed SlicingAll Napatech adapters
Page 22 and 23: Multi CPU Buffer Splitting, Continu
Page 24 and 25: DeduplicationDeduplication is a fun
Page 28: Napatech LibPCAP LibraryExample. Bu

Wireshark in a Multi-Core Environment Using Hardware Acceleration

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