Case study

Cavium SNIC10E: reconstructing a PCIe shared-memory NIC datapath

The Cavium SNIC10E project reconstructs a PCIe BAR2 shared-memory datapath for the CN6640-SNIC10E card. Host and card drivers exchange packets through per-port rings, with PIO transmit and DPI DMA receive, while boot tooling loads OpenWrt into card RAM. The author reports bidirectional traffic on two 10 GbE ports and documents unstable simultaneous load.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-07
Evidence class: C2 code & docs, no demo or download

Stars: 55
Last commit: 2026-11-04
Language: Batchfile
License (GitHub): GPL-2.0

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Cavium CN6640-SNIC10E card; Linux or Windows 10/11 x64 for the implemented host drivers.
Prerequisites: Initial host boot provisioning needs an FT232 serial adapter and a confirmed u-boot environment write; Secure Boot must be off.
Limits: Sustained simultaneous dual-port traffic can wedge the card, requiring a host reboot.
License: GPL-2.0 License.

Cite

BibTeX

@misc{cavium-snic10e-datapath-case,
  title = {{Cavium SNIC10E: reconstructing a PCIe shared-memory NIC datapath}},
  howpublished = {\url{https://github.com/nicologiuliani6/cavium-cn6640-snic10e-octeon-ii-nic}},
  url = {https://github.com/nicologiuliani6/cavium-cn6640-snic10e-octeon-ii-nic},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/cavium-snic10e-datapath-case/}}
}

Plain text

Cavium SNIC10E: reconstructing a PCIe shared-memory NIC datapath. https://github.com/nicologiuliani6/cavium-cn6640-snic10e-octeon-ii-nic (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/cavium-snic10e-datapath-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · nicologiuliani6/cavium-cn6640-snic10e-octeon-ii-nic · Revision 142e019
docs/ARCHITECTURE.md GitHub · nicologiuliani6/cavium-cn6640-snic10e-octeon-ii-nic · Revision 142e019