// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2022 Bytedance */

#include <test_progs.h>
#include "test_map_lookup_percpu_elem.skel.h"

void test_map_lookup_percpu_elem(void)
{
        struct test_map_lookup_percpu_elem *skel;
        __u64 key = 0, sum;
        int ret, i, nr_cpus = libbpf_num_possible_cpus();
        __u64 *buf;

        buf = malloc(nr_cpus*sizeof(__u64));
        if (!ASSERT_OK_PTR(buf, "malloc"))
                return;

        for (i = 0; i < nr_cpus; i++)
                buf[i] = i;
        sum = (nr_cpus - 1) * nr_cpus / 2;

        skel = test_map_lookup_percpu_elem__open();
        if (!ASSERT_OK_PTR(skel, "test_map_lookup_percpu_elem__open"))
                goto exit;

        skel->rodata->my_pid = getpid();
        skel->rodata->nr_cpus = nr_cpus;

        ret = test_map_lookup_percpu_elem__load(skel);
        if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__load"))
                goto cleanup;

        ret = test_map_lookup_percpu_elem__attach(skel);
        if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__attach"))
                goto cleanup;

        ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_array_map), &key, buf, 0);
        ASSERT_OK(ret, "percpu_array_map update");

        ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_hash_map), &key, buf, 0);
        ASSERT_OK(ret, "percpu_hash_map update");

        ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_lru_hash_map), &key, buf, 0);
        ASSERT_OK(ret, "percpu_lru_hash_map update");

        syscall(__NR_getuid);

        test_map_lookup_percpu_elem__detach(skel);

        ASSERT_EQ(skel->bss->percpu_array_elem_sum, sum, "percpu_array lookup percpu elem");
        ASSERT_EQ(skel->bss->percpu_hash_elem_sum, sum, "percpu_hash lookup percpu elem");
        ASSERT_EQ(skel->bss->percpu_lru_hash_elem_sum, sum, "percpu_lru_hash lookup percpu elem");

cleanup:
        test_map_lookup_percpu_elem__destroy(skel);
exit:
        free(buf);
}