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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <test_progs.h>
static int libbpf_debug_print(enum libbpf_print_level level,
const char *format, va_list args)
{
if (level != LIBBPF_DEBUG) {
vprintf(format, args);
return 0;
}
if (!strstr(format, "verifier log"))
return 0;
vprintf("%s", args);
return 0;
}
static int check_load(const char *file, enum bpf_prog_type type)
{
struct bpf_prog_load_attr attr;
struct bpf_object *obj = NULL;
int err, prog_fd;
memset(&attr, 0, sizeof(struct bpf_prog_load_attr));
attr.file = file;
attr.prog_type = type;
attr.log_level = 4;
attr.prog_flags = BPF_F_TEST_RND_HI32;
err = bpf_prog_load_xattr(&attr, &obj, &prog_fd);
bpf_object__close(obj);
return err;
}
struct scale_test_def {
const char *file;
enum bpf_prog_type attach_type;
bool fails;
};
void test_bpf_verif_scale(void)
{
struct scale_test_def tests[] = {
{ "loop3.o", BPF_PROG_TYPE_RAW_TRACEPOINT, true /* fails */ },
{ "test_verif_scale1.o", BPF_PROG_TYPE_SCHED_CLS },
{ "test_verif_scale2.o", BPF_PROG_TYPE_SCHED_CLS },
{ "test_verif_scale3.o", BPF_PROG_TYPE_SCHED_CLS },
/* full unroll by llvm */
{ "pyperf50.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "pyperf100.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "pyperf180.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
/* partial unroll. llvm will unroll loop ~150 times.
* C loop count -> 600.
* Asm loop count -> 4.
* 16k insns in loop body.
* Total of 5 such loops. Total program size ~82k insns.
*/
{ "pyperf600.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
/* no unroll at all.
* C loop count -> 600.
* ASM loop count -> 600.
* ~110 insns in loop body.
* Total of 5 such loops. Total program size ~1500 insns.
*/
{ "pyperf600_nounroll.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "loop1.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "loop2.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "loop4.o", BPF_PROG_TYPE_SCHED_CLS },
{ "loop5.o", BPF_PROG_TYPE_SCHED_CLS },
/* partial unroll. 19k insn in a loop.
* Total program size 20.8k insn.
* ~350k processed_insns
*/
{ "strobemeta.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
/* no unroll, tiny loops */
{ "strobemeta_nounroll1.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "strobemeta_nounroll2.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
{ "test_sysctl_loop1.o", BPF_PROG_TYPE_CGROUP_SYSCTL },
{ "test_sysctl_loop2.o", BPF_PROG_TYPE_CGROUP_SYSCTL },
{ "test_xdp_loop.o", BPF_PROG_TYPE_XDP },
{ "test_seg6_loop.o", BPF_PROG_TYPE_LWT_SEG6LOCAL },
};
libbpf_print_fn_t old_print_fn = NULL;
int err, i;
if (env.verifier_stats) {
test__force_log();
old_print_fn = libbpf_set_print(libbpf_debug_print);
}
for (i = 0; i < ARRAY_SIZE(tests); i++) {
const struct scale_test_def *test = &tests[i];
if (!test__start_subtest(test->file))
continue;
err = check_load(test->file, test->attach_type);
CHECK_FAIL(err && !test->fails);
}
if (env.verifier_stats)
libbpf_set_print(old_print_fn);
}
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