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| author | Jiong Wang | 2019-01-26 18:26:05 +0100 |
|---|---|---|
| committer | Alexei Starovoitov | 2019-01-26 22:33:01 +0100 |
| commit | a7b76c8857692b0fce063b94ed83da11c396d341 (patch) | |
| tree | 3d32a3fca06649bb2b0127b563a3a517ab91a3f2 /tools/include/linux | |
| parent | bpf: interpreter support for JMP32 (diff) | |
| download | kernel-qcow2-linux-a7b76c8857692b0fce063b94ed83da11c396d341.tar.gz kernel-qcow2-linux-a7b76c8857692b0fce063b94ed83da11c396d341.tar.xz kernel-qcow2-linux-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 'tools/include/linux')
| -rw-r--r-- | tools/include/linux/filter.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/include/linux/filter.h b/tools/include/linux/filter.h index af55acf73e75..cce0b02c0e28 100644 --- a/tools/include/linux/filter.h +++ b/tools/include/linux/filter.h @@ -199,6 +199,16 @@ .off = OFF, \ .imm = 0 }) +/* 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 }) + /* Conditional jumps against immediates, if (dst_reg 'op' imm32) goto pc + off16 */ #define BPF_JMP_IMM(OP, DST, IMM, OFF) \ @@ -209,6 +219,16 @@ .off = OFF, \ .imm = IMM }) +/* 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) \ |