* [PATCH net-next] sparc: bpf_jit: add SKF_AD_PKTTYPE support to JIT
@ 2014-09-16 19:35 Alexei Starovoitov
2014-09-19 19:34 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Alexei Starovoitov @ 2014-09-16 19:35 UTC (permalink / raw)
To: David S. Miller; +Cc: Daniel Borkmann, Hannes Frederic Sowa, netdev
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>
---
arch/sparc/net/bpf_jit_comp.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c
index b2ad9dc5425e..2dde48bdcc42 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);
--
1.7.9.5
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