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PPC: bpf_jit_comp: add SKF_AD_PKTTYPE instruction

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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

CC: Alexei Starovoitov<alexei.starovoitov@gmail.com>
CC: Michael Ellerman<mpe@ellerman.id.au>
Cc: Matt Evans <matt@ozlabs.org>
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>

v2: Added test rusults
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis Kirjanov
2014-10-30 09:12:15 +03:00
committed by David S. Miller
parent 547f2735c2
commit 4e23576113
3 changed files with 13 additions and 0 deletions
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1
arch/powerpc/include/asm/ppc-opcode.h
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@@ -204,6 +204,7 @@
#define PPC_INST_ERATSX_DOT 0x7c000127
/* Misc instructions for BPF compiler */
#define PPC_INST_LBZ 0x88000000
#define PPC_INST_LD 0xe8000000
#define PPC_INST_LHZ 0xa0000000
#define PPC_INST_LHBRX 0x7c00062c