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

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>

1 files changed, 20 insertions, 0 deletions

diff --git a/samples/bpf/bpf_insn.h b/samples/bpf/bpf_insn.h
index 20dc5cefec84..544237980582 100644
--- a/samples/bpf/bpf_insn.h
+++ b/samples/bpf/bpf_insn.h
@@ -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)                  \