openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

sparc: bpf_jit: add support for BPF_LD(X) | BPF_LEN instructions 

BPF_LD | BPF_W | BPF_LEN instruction is occasionally used by tcpdump
and present in 11 tests in lib/test_bpf.c
Teach sparc JIT compiler to emit it.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexei Starovoitov 2014-09-23 14:36:11 -07:00 committed by David S. Miller
parent 0a29b3dafb
commit cec0831519
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/sparc/net/bpf_jit_comp.c
View File

@ -624,7 +624,12 @@ void bpf_jit_compile(struct bpf_prog *fp)
emit_and(r_A, r_TMP, r_A);
}
break;
case BPF_LD | BPF_W | BPF_LEN:
emit_skb_load32(len, r_A);
break;
case BPF_LDX | BPF_W | BPF_LEN:
emit_skb_load32(len, r_X);
break;
case BPF_LD | BPF_IMM:
emit_loadimm(K, r_A);
break;