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authorDenis Kirjanov <kda@linux-powerpc.org>2014-06-25 21:34:57 +0400
committerDavid S. Miller <davem@davemloft.net>2014-06-27 16:14:12 -0700
commitdba63115ce0c888fcb4cdec3f8a4ba97d144afaf (patch)
tree6929f44335831f391ee1e2cb1ccad9ee5a12ebfc /arch/powerpc/net
parent3fc60aa097b8eb0f701c5bf755bc8f7d3ffeb0bd (diff)
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>
Diffstat (limited to 'arch/powerpc/net')
-rw-r--r--arch/powerpc/net/bpf_jit_comp.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index 892167b0a4bc..82e82cadcde5 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -394,10 +394,12 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image,
PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff,
vlan_tci));
- if (code == (BPF_ANC | SKF_AD_VLAN_TAG))
+ 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,