[PATCH V3 net-next 1/3] ARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT.
From: Nicolas Schichan
Date: Mon Jul 27 2015 - 09:07:11 EST
Signed-off-by: Nicolas Schichan <nschichan@xxxxxxxxxx>
---
arch/arm/net/bpf_jit_32.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index c011e22..6ff248c 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -895,6 +895,17 @@ b_epilogue:
OP_IMM3(ARM_AND, r_A, r_A, 0x1, ctx);
}
break;
+ case BPF_ANC | SKF_AD_PKTTYPE:
+ ctx->seen |= SEEN_SKB;
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
+ __pkt_type_offset[0]) != 1);
+ off = PKT_TYPE_OFFSET();
+ emit(ARM_LDRB_I(r_A, r_skb, off), ctx);
+ emit(ARM_AND_I(r_A, r_A, PKT_TYPE_MAX), ctx);
+#ifdef __BIG_ENDIAN_BITFIELD
+ emit(ARM_LSR_I(r_A, r_A, 5), ctx);
+#endif
+ break;
case BPF_ANC | SKF_AD_QUEUE:
ctx->seen |= SEEN_SKB;
BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
--
1.9.1
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