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sparc: bpf_jit: add SKF_AD_PKTTYPE support to JIT

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commit 233577a220 ("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>
This commit is contained in:
Alexei Starovoitov 2014-09-16 12:35:35 -07:00 committed by David S. Miller
parent bf3c228d36
commit 709f6c58d4
1 changed files with 2 additions and 7 deletions
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9
arch/sparc/net/bpf_jit_comp.c
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@ -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);