netdev - Re: [PATCH v2] PPC: bpf_jit_comp: add SKF_AD

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Date:	Fri, 31 Oct 2014 10:09:43 +0400
From:	Denis Kirjanov <kirjanov@...il.com>
To:	Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:	Denis Kirjanov <kda@...ux-powerpc.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	linuxppc-dev@...abs.org, Michael Ellerman <mpe@...erman.id.au>,
	Matt Evans <matt@...abs.org>
Subject: Re: [PATCH v2] PPC: bpf_jit_comp: add SKF_AD_PKTTYPE instruction

On 10/30/14, Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:
> On Wed, Oct 29, 2014 at 11:12 PM, Denis Kirjanov <kda@...ux-powerpc.org>
> wrote:
>> Add BPF extension SKF_AD_PKTTYPE to ppc JIT to load
>> skb->pkt_type field.
>>
>> Before:
>> [   88.262622] test_bpf: #11 LD_IND_NET 86 97 99 PASS
>> [   88.265740] test_bpf: #12 LD_PKTTYPE 109 107 PASS
>>
>> After:
>> [   80.605964] test_bpf: #11 LD_IND_NET 44 40 39 PASS
>> [   80.607370] test_bpf: #12 LD_PKTTYPE 9 9 PASS
>
> if you'd only quoted #12, it would all make sense ;)
> but #11 test is not using PKTTYPE. So your patch shouldn't
> make a difference. Are these numbers with JIT on and off?

Right.

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-- 
Regards,
Denis
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