This repository provides go bindings for the bcc framework as well as low-level routines to load and use eBPF programs from .elf files.
gobpf is in early stage, but usable. Input and contributions are very much welcome.
We recommend to vendor gobpf and pin its version as the API probably undergoes change during development.
eBPF requires a recent Linux kernel. A good feature list can be found here: https://github.com/iovisor/bcc/blob/master/docs/kernel-versions.md
Install libbcc (either by package or source).
To build ELF object files for usage with the elf package, you must use distinct
sections (SEC("...")). Currently, kprobe/..., cgroup/skb, cgroup/sock
and maps/... are supported.
See tests/dummy.c for a minimal dummy and https://github.com/weaveworks/tcptracer-bpf
for a real world example.
Example code can be found in the examples/ directory, e.g.
sudo -E go run examples/perf.go
The semaphore.sh script can be used to run the tests in rkt stage1-kvm
containers on different kernel versions. To run all tests on the host system,
use go test as follows:
go test -tags integration -v \
github.com/iovisor/gobpf \
github.com/iovisor/gobpf/elf \
github.com/iovisor/gobpf/bcc