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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
#include <test_progs.h>
#include <network_helpers.h>
#include "refcounted_kptr.skel.h"
#include "refcounted_kptr_fail.skel.h"
void test_refcounted_kptr(void)
{
RUN_TESTS(refcounted_kptr);
}
void test_refcounted_kptr_fail(void)
{
RUN_TESTS(refcounted_kptr_fail);
}
void test_refcounted_kptr_wrong_owner(void)
{
LIBBPF_OPTS(bpf_test_run_opts, opts,
.data_in = &pkt_v4,
.data_size_in = sizeof(pkt_v4),
.repeat = 1,
);
struct refcounted_kptr *skel;
int ret;
skel = refcounted_kptr__open_and_load();
if (!ASSERT_OK_PTR(skel, "refcounted_kptr__open_and_load"))
return;
ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.rbtree_wrong_owner_remove_fail_a1), &opts);
ASSERT_OK(ret, "rbtree_wrong_owner_remove_fail_a1");
ASSERT_OK(opts.retval, "rbtree_wrong_owner_remove_fail_a1 retval");
ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.rbtree_wrong_owner_remove_fail_b), &opts);
ASSERT_OK(ret, "rbtree_wrong_owner_remove_fail_b");
ASSERT_OK(opts.retval, "rbtree_wrong_owner_remove_fail_b retval");
ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.rbtree_wrong_owner_remove_fail_a2), &opts);
ASSERT_OK(ret, "rbtree_wrong_owner_remove_fail_a2");
ASSERT_OK(opts.retval, "rbtree_wrong_owner_remove_fail_a2 retval");
refcounted_kptr__destroy(skel);
}
void test_percpu_hash_refcounted_kptr_refcount_leak(void)
{
struct refcounted_kptr *skel;
int cpu_nr, fd, err, key = 0;
struct bpf_map *map;
size_t values_sz;
u64 *values;
LIBBPF_OPTS(bpf_test_run_opts, opts,
.data_in = &pkt_v4,
.data_size_in = sizeof(pkt_v4),
.repeat = 1,
);
cpu_nr = libbpf_num_possible_cpus();
if (!ASSERT_GT(cpu_nr, 0, "libbpf_num_possible_cpus"))
return;
values = calloc(cpu_nr, sizeof(u64));
if (!ASSERT_OK_PTR(values, "calloc values"))
return;
skel = refcounted_kptr__open_and_load();
if (!ASSERT_OK_PTR(skel, "refcounted_kptr__open_and_load")) {
free(values);
return;
}
values_sz = cpu_nr * sizeof(u64);
memset(values, 0, values_sz);
map = skel->maps.percpu_hash;
err = bpf_map__update_elem(map, &key, sizeof(key), values, values_sz, 0);
if (!ASSERT_OK(err, "bpf_map__update_elem"))
goto out;
fd = bpf_program__fd(skel->progs.percpu_hash_refcount_leak);
err = bpf_prog_test_run_opts(fd, &opts);
if (!ASSERT_OK(err, "bpf_prog_test_run_opts"))
goto out;
if (!ASSERT_EQ(opts.retval, 2, "opts.retval"))
goto out;
err = bpf_map__update_elem(map, &key, sizeof(key), values, values_sz, 0);
if (!ASSERT_OK(err, "bpf_map__update_elem"))
goto out;
fd = bpf_program__fd(skel->progs.check_percpu_hash_refcount);
err = bpf_prog_test_run_opts(fd, &opts);
ASSERT_OK(err, "bpf_prog_test_run_opts");
ASSERT_EQ(opts.retval, 1, "opts.retval");
out:
refcounted_kptr__destroy(skel);
free(values);
}
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