Re: [PATCH v6 net-next 4/6] bpf: enable bpf syscall on x64 and i386

From: Daniel Borkmann
Date: Tue Aug 26 2014 - 04:01:08 EST

On 08/26/2014 09:46 AM, Ingo Molnar wrote:
* Alexei Starovoitov <ast@xxxxxxxxxxxx> wrote:
On Mon, Aug 25, 2014 at 8:52 PM, Stephen Hemminger
<stephen@xxxxxxxxxxxxxxxxxx> wrote:
Per discussion at Kernel Summit. Every new syscall requires
a manual page and test programs. We have had too many new syscalls
that are DOA.

There is verifier testsuite that is testing eBPF verifier from userspace
via bpf syscall. Also there are multiple examples and libbpf.
I think test coverage for bpf syscall is quite substantial already.

This is in tools/bpf/, right?

No, it contains a BPF JIT disasm, bpf assembler and a debugger, but the
last two are for the 'classic' BPF interface only. There's a test suite
for BPF/eBPF in general under lib/test_bpf.c, but so far it tests only
the current code w/o eBPF verifier.

That said, I think Alexei is referring to the examples et al from the
bigger previous proposed patch set.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at