[PATCH V3 net-next 2/3] ARM: net: add support for BPF_ANC | SKF_AD_PAY_OFFSET in ARM JIT.

From: Nicolas Schichan
Date: Mon Jul 27 2015 - 09:07:50 EST


Signed-off-by: Nicolas Schichan <nschichan@xxxxxxxxxx>
---
arch/arm/net/bpf_jit_32.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index 6ff248c..3c73caf 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -915,6 +915,14 @@ b_epilogue:
off = offsetof(struct sk_buff, queue_mapping);
emit(ARM_LDRH_I(r_A, r_skb, off), ctx);
break;
+ case BPF_ANC | SKF_AD_PAY_OFFSET:
+ ctx->seen |= SEEN_SKB | SEEN_CALL;
+
+ emit(ARM_MOV_R(ARM_R0, r_skb), ctx);
+ emit_mov_i(ARM_R3, (unsigned int)skb_get_poff, ctx);
+ emit_blx_r(ARM_R3, ctx);
+ emit(ARM_MOV_R(r_A, ARM_R0), ctx);
+ break;
case BPF_LDX | BPF_W | BPF_ABS:
/*
* load a 32bit word from struct seccomp_data.
--
1.9.1

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