From 709f6c58d4dcd2b300c914ec17b297acae4cb998 Mon Sep 17 00:00:00 2001
From: Alexei Starovoitov <ast@plumgrid.com>
Date: Tue, 16 Sep 2014 12:35:35 -0700
Subject: sparc: bpf_jit: add SKF_AD_PKTTYPE support to JIT
commit 233577a22089 ("net: filter: constify detection of pkt_type_offset")
allows us to implement simple PKTTYPE support in sparc JIT
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/net/bpf_jit_comp.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
(limited to 'arch/sparc')
diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c
index b2ad9dc..2dde48b 100644
--- a/arch/sparc/net/bpf_jit_comp.c
+++ b/arch/sparc/net/bpf_jit_comp.c
@@ -579,16 +579,11 @@ void bpf_jit_compile(struct bpf_prog *fp)
case BPF_ANC | SKF_AD_PROTOCOL:
emit_skb_load16(protocol, r_A);
break;
-#if 0
- /* GCC won't let us take the address of
- * a bit field even though we very much
- * know what we are doing here.
- */
case BPF_ANC | SKF_AD_PKTTYPE:
- __emit_skb_load8(pkt_type, r_A);
+ __emit_skb_load8(__pkt_type_offset, r_A);
+ emit_andi(r_A, PKT_TYPE_MAX, r_A);
emit_alu_K(SRL, 5);
break;
-#endif
case BPF_ANC | SKF_AD_IFINDEX:
emit_skb_loadptr(dev, r_A);
emit_cmpi(r_A, 0);
--
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