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| author | Jiong Wang <jiong.wang@netronome.com> | 2019-05-25 01:25:28 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-05-25 04:58:38 +0300 |
| commit | 0b4de1ff19bf878eb38f4f668ee15c9b9eed4240 (patch) | |
| tree | 3643594fcaf5b1e760a2d899c1b3627251d8b780 /drivers/net/ethernet/netronome/nfp/bpf/main.h | |
| parent | 66d0d5a854a6625974e7de4b874e7934988b0ef8 (diff) | |
| download | linux-0b4de1ff19bf878eb38f4f668ee15c9b9eed4240.tar.xz | |
nfp: bpf: eliminate zero extension code-gen
This patch eliminate zero extension code-gen for instructions including
both alu and load/store. The only exception is for ctx load, because
offload target doesn't go through host ctx convert logic so we do
customized load and ignores zext flag set by verifier.
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/main.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.h b/drivers/net/ethernet/netronome/nfp/bpf/main.h index e54d1ac84df2..57d6ff51e980 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.h +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.h @@ -238,6 +238,8 @@ struct nfp_bpf_reg_state { #define FLAG_INSN_SKIP_PREC_DEPENDENT BIT(4) /* Instruction is optimized by the verifier */ #define FLAG_INSN_SKIP_VERIFIER_OPT BIT(5) +/* Instruction needs to zero extend to high 32-bit */ +#define FLAG_INSN_DO_ZEXT BIT(6) #define FLAG_INSN_SKIP_MASK (FLAG_INSN_SKIP_NOOP | \ FLAG_INSN_SKIP_PREC_DEPENDENT | \ |