We have to return the boolean here if the tag presents
or not, not jusr ORing the TCI with the mask which results to:
[ 709.412097] test_bpf: #18 LD_VLAN_TAG_PRESENT
[ 709.412245] ret 4096 != 1
[ 709.412332] ret 4096 != 1
[ 709.412333] FAIL (2 times)
---
arch/powerpc/net/bpf_jit_comp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index af0ed4d..a3d8f58 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -394,8 +394,10 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32
*image,
vlan_tci));
if (code == (BPF_ANC | SKF_AD_VLAN_TAG))
PPC_ANDI(r_A, r_A, ~VLAN_TAG_PRESENT);
- else
+ else {
PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT);
+ PPC_SRWI(r_A, r_A, 12);
+ }
break;
case BPF_ANC | SKF_AD_QUEUE:
BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
--
2.0.0
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