netdev - [PATCH 1/2] powerpc: bpf: Use correct mask while accessing the VLAN tag

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Message-Id: <1403603969-24436-1-git-send-email-kda@linux-powerpc.org>
Date:	Tue, 24 Jun 2014 13:59:28 +0400
From:	Denis Kirjanov <kda@...ux-powerpc.org>
To:	netdev@...r.kernel.org
Cc:	linuxppc-dev@...ts.ozlabs.org,
	Denis Kirjanov <kda@...ux-powerpc.org>
Subject: [PATCH 1/2] powerpc: bpf: Use correct mask while accessing the VLAN tag

Use the proper mask which is 0xefff
---
 arch/powerpc/net/bpf_jit_comp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index 6dcdade..af0ed4d 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c
@@ -393,7 +393,7 @@ 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))
-				PPC_ANDI(r_A, r_A, VLAN_VID_MASK);
+				PPC_ANDI(r_A, r_A, ~VLAN_TAG_PRESENT);
 			else
 				PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT);
 			break;
-- 
2.0.0

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