diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/main.h')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.h b/drivers/net/ethernet/netronome/nfp/bpf/main.h index 8b143546ae85..654fe7823e5e 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.h +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.h @@ -263,6 +263,8 @@ struct nfp_bpf_reg_state { * @func_id: function id for call instructions * @arg1: arg1 for call instructions * @arg2: arg2 for call instructions + * @umin: copy of core verifier umin_value. + * @umax: copy of core verifier umax_value. * @off: index of first generated machine instruction (in nfp_prog.prog) * @n: eBPF instruction number * @flags: eBPF instruction extra optimization flags @@ -298,6 +300,13 @@ struct nfp_insn_meta { struct bpf_reg_state arg1; struct nfp_bpf_reg_state arg2; }; + /* We are interested in range info for some operands, + * for example, the shift amount. + */ + struct { + u64 umin; + u64 umax; + }; }; unsigned int off; unsigned short n; @@ -375,6 +384,25 @@ static inline bool is_mbpf_xadd(const struct nfp_insn_meta *meta) return (meta->insn.code & ~BPF_SIZE_MASK) == (BPF_STX | BPF_XADD); } +static inline bool is_mbpf_indir_shift(const struct nfp_insn_meta *meta) +{ + u8 code = meta->insn.code; + bool is_alu, is_shift; + u8 opclass, opcode; + + opclass = BPF_CLASS(code); + is_alu = opclass == BPF_ALU64 || opclass == BPF_ALU; + if (!is_alu) + return false; + + opcode = BPF_OP(code); + is_shift = opcode == BPF_LSH || opcode == BPF_RSH || opcode == BPF_ARSH; + if (!is_shift) + return false; + + return BPF_SRC(code) == BPF_X; +} + /** * struct nfp_prog - nfp BPF program * @bpf: backpointer to the bpf app priv structure |