// SPDX-License-Identifier: GPL-2.0 #include <test_progs.h> #include <linux/btf.h> #include "netif_receive_skb.skel.h" /* Demonstrate that bpf_snprintf_btf succeeds and that various data types * are formatted correctly. */ void test_snprintf_btf(void) { struct netif_receive_skb *skel; struct netif_receive_skb__bss *bss; int err, duration = 0; skel = netif_receive_skb__open(); if (CHECK(!skel, "skel_open", "failed to open skeleton\n")) return; err = netif_receive_skb__load(skel); if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err)) goto cleanup; bss = skel->bss; err = netif_receive_skb__attach(skel); if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err)) goto cleanup; /* generate receive event */ err = system("ping -c 1 127.0.0.1 > /dev/null"); if (CHECK(err, "system", "ping failed: %d\n", err)) goto cleanup; if (bss->skip) { printf("%s:SKIP:no __builtin_btf_type_id\n", __func__); test__skip(); goto cleanup; } /* * Make sure netif_receive_skb program was triggered * and it set expected return values from bpf_trace_printk()s * and all tests ran. */ if (!ASSERT_GT(bss->ret, 0, "bpf_snprintf_ret")) goto cleanup; if (CHECK(bss->ran_subtests == 0, "check if subtests ran", "no subtests ran, did BPF program run?")) goto cleanup; if (CHECK(bss->num_subtests != bss->ran_subtests, "check all subtests ran", "only ran %d of %d tests\n", bss->num_subtests, bss->ran_subtests)) goto cleanup; cleanup: netif_receive_skb__destroy(skel); }