[PATCH V2 next-next 1/3] ARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT.

[Nicolas Schichan]

Signed-off-by: Nicolas Schichan <nschic...@freebox.fr>
---
 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 4550d24..67a2d44 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -864,6 +864,17 @@ b_epilogue:
                        else
                                OP_IMM3(ARM_AND, r_A, r_A, VLAN_TAG_PRESENT, 
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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