This patchset adds basic cgroup bpf operations to bpftool. Right now there is no convenient way to perform these operations. The /samples/bpf/load_sock_ops.c implements attach/detacg operations, but only for BPF_CGROUP_SOCK_OPS programs. Bps (part of bcc) implements bpf introspection, but lacks any cgroup-related specific.
I find having a tool to perform these basic operations in the kernel tree very useful, as it can be used in the corresponding bpf documentation without creating additional dependencies. And bpftool seems to be a right tool to extend with such functionality. Roman Gushchin (5): libbpf: add ability to guess program type based on section name libbpf: prefer global symbols as bpf program name source bpftool: implement cgattach command bpftool: implement cgdetach command bpftool: implement cglist command tools/bpf/bpftool/main.c | 209 ++++++++++++++++++++++++++++++++++++++++++++++- tools/lib/bpf/libbpf.c | 49 +++++++++++ 2 files changed, 257 insertions(+), 1 deletion(-) -- 2.14.3
