netdev - Re: [PATCH net-next] test_bpf: add tests related to BPF

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Date:	Wed, 13 May 2015 13:36:29 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Daniel Borkmann <daniel@...earbox.net>, davem@...emloft.net
CC:	netdev@...r.kernel.org, Nicolas Schichan <nschichan@...ebox.fr>
Subject: Re: [PATCH net-next] test_bpf: add tests related to BPF_MAXINSNS

On 5/13/15 4:12 AM, Daniel Borkmann wrote:
> Couple of torture test cases related to the bug fixed in 0b59d8806a31
> ("ARM: net: delegate filter to kernel interpreter when imm_offset()
> return value can't fit into 12bits.").
>
> I've added a helper to allocate and fill the insn space. Output on
> x86_64 from my laptop:
>
> test_bpf: #233 BPF_MAXINSNS: Maximum possible literals jited:0 7 PASS
> test_bpf: #234 BPF_MAXINSNS: Single literal jited:0 8 PASS
> test_bpf: #235 BPF_MAXINSNS: Run/add until end jited:0 11553 PASS
> test_bpf: #236 BPF_MAXINSNS: Too many instructions PASS
> test_bpf: #237 BPF_MAXINSNS: Very long jump jited:0 9 PASS
> test_bpf: #238 BPF_MAXINSNS: Ctx heavy transformations jited:0 20329 20398 PASS
> test_bpf: #239 BPF_MAXINSNS: Call heavy transformations jited:0 32178 32475 PASS
> test_bpf: #240 BPF_MAXINSNS: Jump heavy test jited:0 10518 PASS
>
> test_bpf: #233 BPF_MAXINSNS: Maximum possible literals jited:1 4 PASS
> test_bpf: #234 BPF_MAXINSNS: Single literal jited:1 4 PASS
> test_bpf: #235 BPF_MAXINSNS: Run/add until end jited:1 1625 PASS
> test_bpf: #236 BPF_MAXINSNS: Too many instructions PASS
> test_bpf: #237 BPF_MAXINSNS: Very long jump jited:1 8 PASS
> test_bpf: #238 BPF_MAXINSNS: Ctx heavy transformations jited:1 3301 3174 PASS
> test_bpf: #239 BPF_MAXINSNS: Call heavy transformations jited:1 24107 23491 PASS
> test_bpf: #240 BPF_MAXINSNS: Jump heavy test jited:1 8651 PASS
>
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Cc: Alexei Starovoitov <ast@...mgrid.com>
> Cc: Nicolas Schichan <nschichan@...ebox.fr>

Nice tests!
Acked-by: Alexei Starovoitov <ast@...mgrid.com>

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