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selftests/bpf: Test auto-load disabling logic for BPF programs

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Validate that BPF object with broken (in multiple ways) BPF program can still
be successfully loaded, if that broken BPF program is disabled.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200625232629.3444003-3-andriin@fb.com
This commit is contained in:
Andrii Nakryiko
2020-06-25 16:26:29 -07:00
committed by Alexei Starovoitov
parent d929758101
commit 5712174c5c
2 changed files with 81 additions and 0 deletions
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41
tools/testing/selftests/bpf/prog_tests/autoload.c Normal file
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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
#include <test_progs.h>
#include <time.h>
#include "test_autoload.skel.h"
void test_autoload(void)
{
int duration = 0, err;
struct test_autoload* skel;
skel = test_autoload__open_and_load();
/* prog3 should be broken */
if (CHECK(skel, "skel_open_and_load", "unexpected success\n"))
goto cleanup;
skel = test_autoload__open();
if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
goto cleanup;
/* don't load prog3 */
bpf_program__set_autoload(skel->progs.prog3, false);
err = test_autoload__load(skel);
if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
goto cleanup;
err = test_autoload__attach(skel);
if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
goto cleanup;
usleep(1);
CHECK(!skel->bss->prog1_called, "prog1", "not called\n");
CHECK(!skel->bss->prog2_called, "prog2", "not called\n");
CHECK(skel->bss->prog3_called, "prog3", "called?!\n");
cleanup:
test_autoload__destroy(skel);
}