From 5468a8b929e6276e139405d525c963a56890b5e0 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 30 Nov 2017 21:32:56 -0800 Subject: [PATCH] nfp: bpf: encode indirect commands Add support for emitting commands with field overwrites. Signed-off-by: Jakub Kicinski Signed-off-by: Jiong Wang Signed-off-by: Daniel Borkmann --- drivers/net/ethernet/netronome/nfp/bpf/jit.c | 17 +++++++++++++---- drivers/net/ethernet/netronome/nfp/nfp_asm.h | 3 ++- 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c index 024b44089623..da4e106d3b16 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c @@ -96,7 +96,7 @@ nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) /* --- Emitters --- */ static void __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, - u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) + u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync, bool indir) { enum cmd_ctx_swap ctx; u64 insn; @@ -114,14 +114,15 @@ __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, FIELD_PREP(OP_CMD_CNT, size) | FIELD_PREP(OP_CMD_SIG, sync) | FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | + FIELD_PREP(OP_CMD_INDIR, indir) | FIELD_PREP(OP_CMD_MODE, mode); nfp_prog_push(nfp_prog, insn); } static void -emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, - u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) +emit_cmd_any(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, + swreg lreg, swreg rreg, u8 size, bool sync, bool indir) { struct nfp_insn_re_regs reg; int err; @@ -142,7 +143,15 @@ emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, return; } - __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); + __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync, + indir); +} + +static void +emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, + swreg lreg, swreg rreg, u8 size, bool sync) +{ + emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, false); } static void diff --git a/drivers/net/ethernet/netronome/nfp/nfp_asm.h b/drivers/net/ethernet/netronome/nfp/nfp_asm.h index 74d0c11ab2f9..6ff842a15e5d 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_asm.h +++ b/drivers/net/ethernet/netronome/nfp/nfp_asm.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2016 Netronome Systems, Inc. + * Copyright (C) 2016-2017 Netronome Systems, Inc. * * This software is dual licensed under the GNU General License Version 2, * June 1991 as shown in the file COPYING in the top-level directory of this @@ -209,6 +209,7 @@ enum alu_dst_ab { #define OP_CMD_CNT 0x0000e000000ULL #define OP_CMD_SIG 0x000f0000000ULL #define OP_CMD_TGT_CMD 0x07f00000000ULL +#define OP_CMD_INDIR 0x20000000000ULL #define OP_CMD_MODE 0x1c0000000000ULL struct cmd_tgt_act { -- 2.30.2