1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include <linux/btf.h>
4 #include "netif_receive_skb.skel.h"
5
6 /* Demonstrate that bpf_snprintf_btf succeeds and that various data types
7 * are formatted correctly.
8 */
test_snprintf_btf(void)9 void test_snprintf_btf(void)
10 {
11 struct netif_receive_skb *skel;
12 struct netif_receive_skb__bss *bss;
13 int err, duration = 0;
14
15 skel = netif_receive_skb__open();
16 if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
17 return;
18
19 err = netif_receive_skb__load(skel);
20 if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
21 goto cleanup;
22
23 bss = skel->bss;
24
25 err = netif_receive_skb__attach(skel);
26 if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
27 goto cleanup;
28
29 /* generate receive event */
30 err = system("ping -c 1 127.0.0.1 > /dev/null");
31 if (CHECK(err, "system", "ping failed: %d\n", err))
32 goto cleanup;
33
34 if (bss->skip) {
35 printf("%s:SKIP:no __builtin_btf_type_id\n", __func__);
36 test__skip();
37 goto cleanup;
38 }
39
40 /*
41 * Make sure netif_receive_skb program was triggered
42 * and it set expected return values from bpf_trace_printk()s
43 * and all tests ran.
44 */
45 if (!ASSERT_GT(bss->ret, 0, "bpf_snprintf_ret"))
46 goto cleanup;
47
48 if (CHECK(bss->ran_subtests == 0, "check if subtests ran",
49 "no subtests ran, did BPF program run?"))
50 goto cleanup;
51
52 if (CHECK(bss->num_subtests != bss->ran_subtests,
53 "check all subtests ran",
54 "only ran %d of %d tests\n", bss->num_subtests,
55 bss->ran_subtests))
56 goto cleanup;
57
58 cleanup:
59 netif_receive_skb__destroy(skel);
60 }
61