Enable kernel support for eBPF
The Linux kernel has had support for extended BPF for a while now.
It would be nice if this was usable on Alpine to do e.g. monitoring and
packet modification.
Alpine currently doesn’t support the bpf() syscall.
It’s also not possible to create or access /sys/fs/bpf (bpffs).
Required options:
https://github.com/iovisor/bcc/blob/master/INSTALL.md\#kernel-configuration
Some more info:
https://www.kernel.org/doc/Documentation/networking/filter.txt
https://opensource.com/article/17/9/intro-ebpf
(from redmine: issue id 7984, created on 2017-10-06)