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 */ 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 (CHECK(bss->ret <= 0, 46 "bpf_snprintf_btf: got return value", 47 "ret <= 0 %ld test %d\n", bss->ret, bss->ran_subtests)) 48 goto cleanup; 49 50 if (CHECK(bss->ran_subtests == 0, "check if subtests ran", 51 "no subtests ran, did BPF program run?")) 52 goto cleanup; 53 54 if (CHECK(bss->num_subtests != bss->ran_subtests, 55 "check all subtests ran", 56 "only ran %d of %d tests\n", bss->num_subtests, 57 bss->ran_subtests)) 58 goto cleanup; 59 60 cleanup: 61 netif_receive_skb__destroy(skel); 62 } 63