On 6/1/17 11:24 AM, Alexei Starovoitov wrote: > > what problem are we trying to solve? > If we don't agree on the problem, we won't be able to agree on the > solution.
I want the ability to retrieve the BPF instructions pushed to the kernel. Not just for cgroups and VRF, but everywhere - cgroups, sockets, xdp, filters, etc. I have this stated many times, including to you at netconf in April. From that discussion and the discussion on the RFC patch I sent in February, I thought we had an agreement that saving the instructions was the first step. Quentin at 6wind has expressed a similar interest for cls_bpf and act_bpf code. I read Jakub's email as wanting the same but for XDP. The patches I referenced earlier save the original instructions and enable them to be read by userspace from an fd return by the bpf syscall. Combine that with the ID and we have a solution.
