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>

1 files 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);