[PATCH v2] PPC: bpf_jit_comp: add SKF_AD_PKTTYPE instruction

Alexei Starovoitov alexei.starovoitov at gmail.com
Fri Oct 31 07:32:44 AEDT 2014


On Wed, Oct 29, 2014 at 11:12 PM, Denis Kirjanov <kda at linux-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?


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