Implement libbpf bpf_program API

[grantseltzer]

We should expose all of the bpf_program api, just being careful about what is deprecated and/or discouraged when 1.0 is released.

• [ ] bpf_program__set_ifindex
• [ ] bpf_program__name
• [ ] bpf_program__section_name
• [ ] bpf_program__autoload
• [x] bpf_program__set_autoload
• [x] bpf_program__fd
• [x] bpf_program__pin
• [x] bpf_program__unpin
• [ ] bpf_program__unload
• [x] bpf_program__attach
• [x] bpf_program__attach_perf_event
• [ ] bpf_program__attach_perf_event_opts
• [x] bpf_program__attach_kprobe
• [ ] bpf_program__attach_kprobe_opts
• [x] bpf_program__attach_uprobe
• [ ] bpf_program__attach_uprobe_opts
• [x] bpf_program__attach_tracepoint
• [ ] bpf_program__attach_tracepoint_opts
• [x] bpf_program__attach_raw_tracepoint
• [ ] bpf_program__attach_trace
• [ ] bpf_program__attach_trace_opts
• [x] bpf_program__attach_lsm
• [x] bpf_program__attach_cgroup
• [x] bpf_program__attach_netns
• [x] bpf_program__attach_xdp
• [ ] bpf_program__attach_freplace
• [x] bpf_program__attach_iter
• [x] bpf_program__type
• [x] bpf_program__set_type
• [ ] bpf_program__expected_attach_type
• [x] bpf_program__set_expected_attach_type
• [x] bpf_program__set_attach_target

Low-level API:

• [ ] bpf_prog_get_info_by_fd

[saschagrunert]

Hey folks, is anyone already working on the XDP API bits? I would require it for a PoC so I can probably contribute from this perspective.

[grantseltzer]

Hi @saschagrunert! No one currently has the XDP api on their plate, you're more than welcome to contribute and I'd be happy to help in any way I can!

[rafaeldtinoco]

BTW, there is a generic attachment interface now, right ?

It is tied to bpf_program__attach_cgroup and some other attachments.

[rafaeldtinoco]

bpf_program__attach_cgroup PR: https://github.com/aquasecurity/libbpfgo/pull/196