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selftests: bpf: functional and min/max reasoning unit tests for JMP32

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This patch adds unit tests for new JMP32 instructions.

This patch also added the new BPF_JMP32_REG and BPF_JMP32_IMM macros to
samples/bpf/bpf_insn.h so that JMP32 insn builders are available to tests
under 'samples' directory.

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>
This commit is contained in:
Jiong Wang
2019-01-26 12:26:13 -05:00
committed by Alexei Starovoitov
parent 461448398a
commit 6ea848b5ce
2 changed files with 782 additions and 24 deletions
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20
samples/bpf/bpf_insn.h
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@@ -164,6 +164,16 @@ struct bpf_insn;
.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) \
@@ -174,6 +184,16 @@ struct bpf_insn;
.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 })
/* Raw code statement block */
#define BPF_RAW_INSN(CODE, DST, SRC, OFF, IMM) \