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Message-Id: <1437481000-22835-2-git-send-email-nschichan@freebox.fr>
Date: Tue, 21 Jul 2015 14:16:38 +0200
From: Nicolas Schichan <nschichan@...ebox.fr>
To: "David S. Miller" <davem@...emloft.net>,
Daniel Borkmann <dborkman@...hat.com>,
Nicolas Schichan <nschichan@...ebox.fr>,
Mircea Gherzan <mgherzan@...il.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Cc: Russell King <linux@....linux.org.uk>,
Alexei Starovoitov <ast@...mgrid.com>
Subject: [PATCH V2 next-next 1/3] ARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT.
Signed-off-by: Nicolas Schichan <nschichan@...ebox.fr>
---
arch/arm/net/bpf_jit_32.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index 4550d24..67a2d44 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -864,6 +864,17 @@ b_epilogue:
else
OP_IMM3(ARM_AND, r_A, r_A, VLAN_TAG_PRESENT, ctx);
break;
+ case BPF_ANC | SKF_AD_PKTTYPE:
+ ctx->seen |= SEEN_SKB;
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
+ __pkt_type_offset[0]) != 1);
+ off = PKT_TYPE_OFFSET();
+ emit(ARM_LDRB_I(r_A, r_skb, off), ctx);
+ emit(ARM_AND_I(r_A, r_A, PKT_TYPE_MAX), ctx);
+#ifdef __BIG_ENDIAN_BITFIELD
+ emit(ARM_LSR_I(r_A, r_A, 5), ctx);
+#endif
+ break;
case BPF_ANC | SKF_AD_QUEUE:
ctx->seen |= SEEN_SKB;
BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
--
1.9.1
--
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