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powerpc: bpf: Fix the broken LD_VLAN_TAG_PRESENT test
We have to return the boolean here if the tag presents or not, not just ANDing 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) Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -394,10 +394,12 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image,
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PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff,
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vlan_tci));
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if (code == (BPF_ANC | SKF_AD_VLAN_TAG))
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if (code == (BPF_ANC | SKF_AD_VLAN_TAG)) {
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PPC_ANDI(r_A, r_A, ~VLAN_TAG_PRESENT);
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else
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} else {
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PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT);
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PPC_SRWI(r_A, r_A, 12);
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}
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break;
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case BPF_ANC | SKF_AD_QUEUE:
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BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
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