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XDP

A collection of 5 posts

Experimental support for AF_XDP sockets in NSD

Experimental support for AF_XDP sockets in NSD

By Jannik Peters We have been developing support for AF_XDP sockets in NSD. They allow handling a higher rate of network packets than through the Linux network stack on supported hardware[1]—For a list of supported drivers (and by extension hardware) and their minimum Linux kernel version please

Journeying into XDP: XDPerimenting with DNS telemetry

Journeying into XDP: XDPerimenting with DNS telemetry

By Luuk Hendriks The XDP programs we’ve so far described in this series have been actively modifying DNS packets to perform functions such as response rate limiting (RRL), cookies and padding. This time, we’ll look into a passive BPF-program which enables us to plot graphs of DNS metrics

Journeying into XDP: Fully-fledged DNS service augmentation

Journeying into XDP: Fully-fledged DNS service augmentation

By Willem Toorop In our previous post on using eXpress Data Path (XDP) for DNS, we discussed how a new XDP rate-limiting queries feature can augment a DNS service running in user space (with common DNS software) to deal with denial of service (DoS) attacks. Journeying into XDP: Part 0Network

Journeying into XDP Part 1: Augmenting DNS

Journeying into XDP Part 1: Augmenting DNS

How can eXpress Data Path (XDP) augment existing DNS software? We share our experiences of implementing Response Rate Limiting in XDP.

Journeying into XDP: Part 0

Journeying into XDP: Part 0

Network programming using XDP has been on our radar for a while now. As tooling around this technology has vastly improved, we decided that it was time to finally get our hands dirty and see what this technology is all about.