[PATCH net-next 4/6] net/bpf_jit: PPC: split VLAN_PRESENT bit handling from VLAN_TCI
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From: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Date: 2017-01-04 01:18:32
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netdev
Subsystem:
bpf jit for powerpc (32-bit and 64-bit), bpf [general] (safe dynamic programs and tools), linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Hari Bathini, Christophe Leroy, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Madhavan Srinivasan, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2018-11-10 · [PATCH net-next 4/6] net/bpf_jit: PPC: split VLAN_PRESENT bit handling from VLAN_TCI · Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> --- arch/powerpc/net/bpf_jit_comp.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c
index 7e706f36e364..22ae63fb9b7d 100644
--- a/arch/powerpc/net/bpf_jit_comp.c
+++ b/arch/powerpc/net/bpf_jit_comp.c@@ -377,18 +377,19 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, hash)); break; case BPF_ANC | SKF_AD_VLAN_TAG: - case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); - BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000); 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_TAG_PRESENT); - } else { - PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT); - PPC_SRWI(r_A, r_A, 12); - } +#ifdef VLAN_TAG_PRESENT + PPC_ANDI(r_A, r_A, ~VLAN_TAG_PRESENT); +#endif + break; + case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: + PPC_LBZ_OFFS(r_A, r_skb, PKT_VLAN_PRESENT_OFFSET()); + if (PKT_VLAN_PRESENT_BIT) + PPC_SRWI(r_A, r_A, PKT_VLAN_PRESENT_BIT); + PPC_ANDI(r_A, r_A, 1); break; case BPF_ANC | SKF_AD_QUEUE: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
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