1// SPDX-License-Identifier: GPL-2.0
2// Copyright (c) 2019 Facebook
3#include <test_progs.h>
4static int libbpf_debug_print(enum libbpf_print_level level,
5 const char *format, va_list args)
6{
7 if (level != LIBBPF_DEBUG) {
8 vprintf(format, args);
9 return 0;
10 }
11
12 if (!strstr(format, "verifier log"))
13 return 0;
14 vprintf("%s", args);
15 return 0;
16}
17
18extern int extra_prog_load_log_flags;
19
20static int check_load(const char *file, enum bpf_prog_type type)
21{
22 struct bpf_object *obj = NULL;
23 struct bpf_program *prog;
24 int err;
25
26 obj = bpf_object__open_file(file, NULL);
27 err = libbpf_get_error(obj);
28 if (err)
29 return err;
30
31 prog = bpf_object__next_program(obj, NULL);
32 if (!prog) {
33 err = -ENOENT;
34 goto err_out;
35 }
36
37 bpf_program__set_type(prog, type);
38 bpf_program__set_flags(prog, testing_prog_flags());
39 bpf_program__set_log_level(prog, 4 | extra_prog_load_log_flags);
40
41 err = bpf_object__load(obj);
42
43err_out:
44 bpf_object__close(obj);
45 return err;
46}
47
48static void scale_test(const char *file,
49 enum bpf_prog_type attach_type,
50 bool should_fail)
51{
52 libbpf_print_fn_t old_print_fn = NULL;
53 int err;
54
55 if (env.verifier_stats) {
56 test__force_log();
57 old_print_fn = libbpf_set_print(libbpf_debug_print);
58 }
59
60 err = check_load(file, type: attach_type);
61 if (should_fail)
62 ASSERT_ERR(err, "expect_error");
63 else
64 ASSERT_OK(err, "expect_success");
65
66 if (env.verifier_stats)
67 libbpf_set_print(old_print_fn);
68}
69
70void test_verif_scale1()
71{
72 scale_test("test_verif_scale1.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
73}
74
75void test_verif_scale2()
76{
77 scale_test("test_verif_scale2.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
78}
79
80void test_verif_scale3()
81{
82 scale_test("test_verif_scale3.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
83}
84
85void test_verif_scale_pyperf_global()
86{
87 scale_test("pyperf_global.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
88}
89
90void test_verif_scale_pyperf_subprogs()
91{
92 scale_test("pyperf_subprogs.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
93}
94
95void test_verif_scale_pyperf50()
96{
97 /* full unroll by llvm */
98 scale_test("pyperf50.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
99}
100
101void test_verif_scale_pyperf100()
102{
103 /* full unroll by llvm */
104 scale_test("pyperf100.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
105}
106
107void test_verif_scale_pyperf180()
108{
109 /* full unroll by llvm */
110 scale_test("pyperf180.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
111}
112
113void test_verif_scale_pyperf600()
114{
115 /* partial unroll. llvm will unroll loop ~150 times.
116 * C loop count -> 600.
117 * Asm loop count -> 4.
118 * 16k insns in loop body.
119 * Total of 5 such loops. Total program size ~82k insns.
120 */
121 scale_test("pyperf600.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
122}
123
124void test_verif_scale_pyperf600_bpf_loop(void)
125{
126 /* use the bpf_loop helper*/
127 scale_test("pyperf600_bpf_loop.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
128}
129
130void test_verif_scale_pyperf600_nounroll()
131{
132 /* no unroll at all.
133 * C loop count -> 600.
134 * ASM loop count -> 600.
135 * ~110 insns in loop body.
136 * Total of 5 such loops. Total program size ~1500 insns.
137 */
138 scale_test("pyperf600_nounroll.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
139}
140
141void test_verif_scale_pyperf600_iter()
142{
143 /* open-coded BPF iterator version */
144 scale_test("pyperf600_iter.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
145}
146
147void test_verif_scale_loop1()
148{
149 scale_test("loop1.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
150}
151
152void test_verif_scale_loop2()
153{
154 scale_test("loop2.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
155}
156
157void test_verif_scale_loop3_fail()
158{
159 scale_test("loop3.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, true /* fails */);
160}
161
162void test_verif_scale_loop4()
163{
164 scale_test("loop4.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
165}
166
167void test_verif_scale_loop5()
168{
169 scale_test("loop5.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
170}
171
172void test_verif_scale_loop6()
173{
174 scale_test("loop6.bpf.o", BPF_PROG_TYPE_KPROBE, false);
175}
176
177void test_verif_scale_strobemeta()
178{
179 /* partial unroll. 19k insn in a loop.
180 * Total program size 20.8k insn.
181 * ~350k processed_insns
182 */
183 scale_test("strobemeta.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
184}
185
186void test_verif_scale_strobemeta_bpf_loop(void)
187{
188 /* use the bpf_loop helper*/
189 scale_test("strobemeta_bpf_loop.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
190}
191
192void test_verif_scale_strobemeta_nounroll1()
193{
194 /* no unroll, tiny loops */
195 scale_test("strobemeta_nounroll1.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
196}
197
198void test_verif_scale_strobemeta_nounroll2()
199{
200 /* no unroll, tiny loops */
201 scale_test("strobemeta_nounroll2.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
202}
203
204void test_verif_scale_strobemeta_subprogs()
205{
206 /* non-inlined subprogs */
207 scale_test("strobemeta_subprogs.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
208}
209
210void test_verif_scale_sysctl_loop1()
211{
212 scale_test("test_sysctl_loop1.bpf.o", BPF_PROG_TYPE_CGROUP_SYSCTL, false);
213}
214
215void test_verif_scale_sysctl_loop2()
216{
217 scale_test("test_sysctl_loop2.bpf.o", BPF_PROG_TYPE_CGROUP_SYSCTL, false);
218}
219
220void test_verif_scale_xdp_loop()
221{
222 scale_test("test_xdp_loop.bpf.o", BPF_PROG_TYPE_XDP, false);
223}
224
225void test_verif_scale_seg6_loop()
226{
227 scale_test("test_seg6_loop.bpf.o", BPF_PROG_TYPE_LWT_SEG6LOCAL, false);
228}
229
230void test_verif_twfw()
231{
232 scale_test("twfw.bpf.o", BPF_PROG_TYPE_CGROUP_SKB, false);
233}
234

source code of linux/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c