13-15 November 2018
America/Vancouver timezone

eBPF Debugging Infrastructure - Current Techniques and Additional Proposals

15 Nov 2018, 11:20
20m
Pavillion-Ballroom-C (Sheraton Vancouver Wall Center)

Pavillion-Ballroom-C

Sheraton Vancouver Wall Center

58

Speaker

Quentin Monnet (Netronome)

Description

eBPF (extended Berkeley Packet Filter), in particular with its driver-level hook XDP (eXpress Data Path), has increased in importance over the past few years. As a result, the ability to rapidly debug and diagnose problems is becoming more relevant. This talk will cover common issues faced and techniques to diagnose them, including the use of bpftool for map and program introspection, the use of disassembly to inspect generated assembly code and other methods such as using debug prints and how to apply these techniques when eBPF programs are offloaded to the hardware.

The talk will also explore where the current gaps in debugging infrastructure are and suggest some of the next steps to improve this, for example, integrations with tools such as strace, valgrind or even the LLDB debugger.

Presentation Materials

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