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| author |   Jiong Wang <jiong.wang@netronome.com> | 2019-01-26 12:26:05 -0500 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-01-26 13:33:01 -0800 |
| commit | a7b76c8857692b0fce063b94ed83da11c396d341 (patch) | |
| tree | 3d32a3fca06649bb2b0127b563a3a517ab91a3f2 /include/linux/filter.h | |
| parent | bpf: interpreter support for JMP32 (diff) | |
| download | linux-dev-a7b76c8857692b0fce063b94ed83da11c396d341.tar.xz linux-dev-a7b76c8857692b0fce063b94ed83da11c396d341.zip | |
bpf: JIT blinds support JMP32
This patch adds JIT blinds support for JMP32.
Like BPF_JMP_REG/IMM, JMP32 version are needed for building raw bpf insn.
They are added to both include/linux/filter.h and
tools/include/linux/filter.h.
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 'include/linux/filter.h')
| -rw-r--r-- | include/linux/filter.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index be9af6b4a9e4..e4b473f85b46 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -277,6 +277,26 @@ struct sock_reuseport; .off = OFF, \ .imm = IMM }) +/* Like BPF_JMP_REG, but with 32-bit wide operands for comparison. */ + +#define BPF_JMP32_REG(OP, DST, SRC, OFF) \ + ((struct bpf_insn) { \ + .code = BPF_JMP32 | BPF_OP(OP) | BPF_X, \ + .dst_reg = DST, \ + .src_reg = SRC, \ + .off = OFF, \ + .imm = 0 }) + +/* Like BPF_JMP_IMM, but with 32-bit wide operands for comparison. */ + +#define BPF_JMP32_IMM(OP, DST, IMM, OFF) \ + ((struct bpf_insn) { \ + .code = BPF_JMP32 | BPF_OP(OP) | BPF_K, \ + .dst_reg = DST, \ + .src_reg = 0, \ + .off = OFF, \ + .imm = IMM }) + /* Unconditional jumps, goto pc + off16 */ #define BPF_JMP_A(OFF) \ |