diff options
| author | Jiong Wang <jiong.wang@netronome.com> | 2017-11-30 21:32:53 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2017-12-01 20:59:20 +0100 |
| commit | 29fe46efba5c3e1ac0f857a03a29f6bf0d0c5592 (patch) | |
| tree | 7fd071ab984451140e6c07c16f0ba52fc77111ad /drivers | |
| parent | 1266f5d6559e30e9afdebfff60d60ab86a8da77b (diff) | |
nfp: bpf: don't do ld/shifts combination if shifts are jump destination
If any of the shift insns in the ld/shift sequence is jump destination,
don't do combination.
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/jit.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c index f2317b764222..54915a3b8a7e 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c @@ -2181,6 +2181,10 @@ static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) if (next1.imm != 0x20 || next2.imm != 0x20) continue; + if (meta2->flags & FLAG_INSN_IS_JUMP_DST || + meta3->flags & FLAG_INSN_IS_JUMP_DST) + continue; + meta2->skip = true; meta3->skip = true; } |