arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit

[Shubham Bansal]

Hi Daniel,

Thanks for the last reply about the testing of eBPF JIT.

I have one issue though, I am not able to find what BPF_ABS and
BPF_IND instruction does exactly. It not described on this link -
https://www.kernel.org/doc/Documentation/networking/filter.txt either.
Can you please tell me where I could find the description of these
instructions please?
Best,
Shubham Bansal


On Thu, Apr 6, 2017 at 6:21 PM, Daniel Borkmann <daniel at iogearbox.net> wrote:
> On 04/06/2017 01:05 PM, Shubham Bansal wrote:
>>
>> Gentle Reminder.
>
>
> Sorry for late reply.
>
>> Anybody can tell me how to test the JIT compiler ?
>
>
> There's lib/test_bpf.c, see Documentation/networking/filter.txt +1349
> for some more information. It basically contains various test cases that
> have the purpose to test the JIT with corner cases. If you see a useful
> test missing, please send a patch for it, so all other JITs can benefit
> from this as well. For extracting disassembly from a generated test case,
> check out bpf_jit_disasm (Documentation/networking/filter.txt +486).
>
> Thanks,
> Daniel