1646f02ffSAndrii Nakryiko // SPDX-License-Identifier: GPL-2.0
2646f02ffSAndrii Nakryiko /* Copyright (c) 2020 Facebook */
3646f02ffSAndrii Nakryiko
4646f02ffSAndrii Nakryiko #include <test_progs.h>
5646f02ffSAndrii Nakryiko
6646f02ffSAndrii Nakryiko #include "test_btf_map_in_map.skel.h"
7646f02ffSAndrii Nakryiko
80ba58348SAndrii Nakryiko static int duration;
90ba58348SAndrii Nakryiko
bpf_map_id(struct bpf_map * map)100ba58348SAndrii Nakryiko static __u32 bpf_map_id(struct bpf_map *map)
110ba58348SAndrii Nakryiko {
120ba58348SAndrii Nakryiko struct bpf_map_info info;
130ba58348SAndrii Nakryiko __u32 info_len = sizeof(info);
140ba58348SAndrii Nakryiko int err;
150ba58348SAndrii Nakryiko
160ba58348SAndrii Nakryiko memset(&info, 0, info_len);
17c5a237a4SIlya Leoshkevich err = bpf_map_get_info_by_fd(bpf_map__fd(map), &info, &info_len);
180ba58348SAndrii Nakryiko if (err)
190ba58348SAndrii Nakryiko return 0;
200ba58348SAndrii Nakryiko return info.id;
210ba58348SAndrii Nakryiko }
220ba58348SAndrii Nakryiko
test_lookup_update(void)23d557ea39SMartin KaFai Lau static void test_lookup_update(void)
24646f02ffSAndrii Nakryiko {
256775dab7SDaniel Borkmann int map1_fd, map2_fd, map3_fd, map4_fd, map5_fd, map1_id, map2_id;
266775dab7SDaniel Borkmann int outer_arr_fd, outer_hash_fd, outer_arr_dyn_fd;
27646f02ffSAndrii Nakryiko struct test_btf_map_in_map *skel;
28*14bb1e8cSYonghong Song int err, key = 0, val, i;
29646f02ffSAndrii Nakryiko
30646f02ffSAndrii Nakryiko skel = test_btf_map_in_map__open_and_load();
31646f02ffSAndrii Nakryiko if (CHECK(!skel, "skel_open", "failed to open&load skeleton\n"))
32646f02ffSAndrii Nakryiko return;
33646f02ffSAndrii Nakryiko
34646f02ffSAndrii Nakryiko err = test_btf_map_in_map__attach(skel);
35646f02ffSAndrii Nakryiko if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
36646f02ffSAndrii Nakryiko goto cleanup;
37646f02ffSAndrii Nakryiko
380ba58348SAndrii Nakryiko map1_fd = bpf_map__fd(skel->maps.inner_map1);
390ba58348SAndrii Nakryiko map2_fd = bpf_map__fd(skel->maps.inner_map2);
406775dab7SDaniel Borkmann map3_fd = bpf_map__fd(skel->maps.inner_map3);
416775dab7SDaniel Borkmann map4_fd = bpf_map__fd(skel->maps.inner_map4);
426775dab7SDaniel Borkmann map5_fd = bpf_map__fd(skel->maps.inner_map5);
436775dab7SDaniel Borkmann outer_arr_dyn_fd = bpf_map__fd(skel->maps.outer_arr_dyn);
440ba58348SAndrii Nakryiko outer_arr_fd = bpf_map__fd(skel->maps.outer_arr);
450ba58348SAndrii Nakryiko outer_hash_fd = bpf_map__fd(skel->maps.outer_hash);
460ba58348SAndrii Nakryiko
476775dab7SDaniel Borkmann /* inner1 = input, inner2 = input + 1, inner3 = input + 2 */
480ba58348SAndrii Nakryiko bpf_map_update_elem(outer_arr_fd, &key, &map1_fd, 0);
490ba58348SAndrii Nakryiko bpf_map_update_elem(outer_hash_fd, &key, &map2_fd, 0);
506775dab7SDaniel Borkmann bpf_map_update_elem(outer_arr_dyn_fd, &key, &map3_fd, 0);
51646f02ffSAndrii Nakryiko skel->bss->input = 1;
52646f02ffSAndrii Nakryiko usleep(1);
530ba58348SAndrii Nakryiko bpf_map_lookup_elem(map1_fd, &key, &val);
54646f02ffSAndrii Nakryiko CHECK(val != 1, "inner1", "got %d != exp %d\n", val, 1);
550ba58348SAndrii Nakryiko bpf_map_lookup_elem(map2_fd, &key, &val);
56646f02ffSAndrii Nakryiko CHECK(val != 2, "inner2", "got %d != exp %d\n", val, 2);
576775dab7SDaniel Borkmann bpf_map_lookup_elem(map3_fd, &key, &val);
586775dab7SDaniel Borkmann CHECK(val != 3, "inner3", "got %d != exp %d\n", val, 3);
59646f02ffSAndrii Nakryiko
606775dab7SDaniel Borkmann /* inner2 = input, inner1 = input + 1, inner4 = input + 2 */
610ba58348SAndrii Nakryiko bpf_map_update_elem(outer_arr_fd, &key, &map2_fd, 0);
620ba58348SAndrii Nakryiko bpf_map_update_elem(outer_hash_fd, &key, &map1_fd, 0);
636775dab7SDaniel Borkmann bpf_map_update_elem(outer_arr_dyn_fd, &key, &map4_fd, 0);
64646f02ffSAndrii Nakryiko skel->bss->input = 3;
65646f02ffSAndrii Nakryiko usleep(1);
660ba58348SAndrii Nakryiko bpf_map_lookup_elem(map1_fd, &key, &val);
67646f02ffSAndrii Nakryiko CHECK(val != 4, "inner1", "got %d != exp %d\n", val, 4);
680ba58348SAndrii Nakryiko bpf_map_lookup_elem(map2_fd, &key, &val);
69646f02ffSAndrii Nakryiko CHECK(val != 3, "inner2", "got %d != exp %d\n", val, 3);
706775dab7SDaniel Borkmann bpf_map_lookup_elem(map4_fd, &key, &val);
716775dab7SDaniel Borkmann CHECK(val != 5, "inner4", "got %d != exp %d\n", val, 5);
726775dab7SDaniel Borkmann
736775dab7SDaniel Borkmann /* inner5 = input + 2 */
746775dab7SDaniel Borkmann bpf_map_update_elem(outer_arr_dyn_fd, &key, &map5_fd, 0);
756775dab7SDaniel Borkmann skel->bss->input = 5;
766775dab7SDaniel Borkmann usleep(1);
776775dab7SDaniel Borkmann bpf_map_lookup_elem(map5_fd, &key, &val);
786775dab7SDaniel Borkmann CHECK(val != 7, "inner5", "got %d != exp %d\n", val, 7);
79646f02ffSAndrii Nakryiko
800ba58348SAndrii Nakryiko for (i = 0; i < 5; i++) {
810ba58348SAndrii Nakryiko val = i % 2 ? map1_fd : map2_fd;
820ba58348SAndrii Nakryiko err = bpf_map_update_elem(outer_hash_fd, &key, &val, 0);
830ba58348SAndrii Nakryiko if (CHECK_FAIL(err)) {
840ba58348SAndrii Nakryiko printf("failed to update hash_of_maps on iter #%d\n", i);
850ba58348SAndrii Nakryiko goto cleanup;
860ba58348SAndrii Nakryiko }
870ba58348SAndrii Nakryiko err = bpf_map_update_elem(outer_arr_fd, &key, &val, 0);
880ba58348SAndrii Nakryiko if (CHECK_FAIL(err)) {
896775dab7SDaniel Borkmann printf("failed to update array_of_maps on iter #%d\n", i);
906775dab7SDaniel Borkmann goto cleanup;
916775dab7SDaniel Borkmann }
926775dab7SDaniel Borkmann val = i % 2 ? map4_fd : map5_fd;
936775dab7SDaniel Borkmann err = bpf_map_update_elem(outer_arr_dyn_fd, &key, &val, 0);
946775dab7SDaniel Borkmann if (CHECK_FAIL(err)) {
956775dab7SDaniel Borkmann printf("failed to update array_of_maps (dyn) on iter #%d\n", i);
960ba58348SAndrii Nakryiko goto cleanup;
970ba58348SAndrii Nakryiko }
980ba58348SAndrii Nakryiko }
990ba58348SAndrii Nakryiko
1000ba58348SAndrii Nakryiko map1_id = bpf_map_id(skel->maps.inner_map1);
1010ba58348SAndrii Nakryiko map2_id = bpf_map_id(skel->maps.inner_map2);
1020ba58348SAndrii Nakryiko CHECK(map1_id == 0, "map1_id", "failed to get ID 1\n");
1030ba58348SAndrii Nakryiko CHECK(map2_id == 0, "map2_id", "failed to get ID 2\n");
1040ba58348SAndrii Nakryiko
105646f02ffSAndrii Nakryiko cleanup:
106646f02ffSAndrii Nakryiko test_btf_map_in_map__destroy(skel);
107646f02ffSAndrii Nakryiko }
108d557ea39SMartin KaFai Lau
test_diff_size(void)109d557ea39SMartin KaFai Lau static void test_diff_size(void)
110d557ea39SMartin KaFai Lau {
111d557ea39SMartin KaFai Lau struct test_btf_map_in_map *skel;
112d557ea39SMartin KaFai Lau int err, inner_map_fd, zero = 0;
113d557ea39SMartin KaFai Lau
114d557ea39SMartin KaFai Lau skel = test_btf_map_in_map__open_and_load();
115d557ea39SMartin KaFai Lau if (CHECK(!skel, "skel_open", "failed to open&load skeleton\n"))
116d557ea39SMartin KaFai Lau return;
117d557ea39SMartin KaFai Lau
118d557ea39SMartin KaFai Lau inner_map_fd = bpf_map__fd(skel->maps.sockarr_sz2);
119d557ea39SMartin KaFai Lau err = bpf_map_update_elem(bpf_map__fd(skel->maps.outer_sockarr), &zero,
120d557ea39SMartin KaFai Lau &inner_map_fd, 0);
121d557ea39SMartin KaFai Lau CHECK(err, "outer_sockarr inner map size check",
122d557ea39SMartin KaFai Lau "cannot use a different size inner_map\n");
123d557ea39SMartin KaFai Lau
124d557ea39SMartin KaFai Lau inner_map_fd = bpf_map__fd(skel->maps.inner_map_sz2);
125d557ea39SMartin KaFai Lau err = bpf_map_update_elem(bpf_map__fd(skel->maps.outer_arr), &zero,
126d557ea39SMartin KaFai Lau &inner_map_fd, 0);
127d557ea39SMartin KaFai Lau CHECK(!err, "outer_arr inner map size check",
128d557ea39SMartin KaFai Lau "incorrectly updated with a different size inner_map\n");
129d557ea39SMartin KaFai Lau
130d557ea39SMartin KaFai Lau test_btf_map_in_map__destroy(skel);
131d557ea39SMartin KaFai Lau }
132d557ea39SMartin KaFai Lau
test_btf_map_in_map(void)133d557ea39SMartin KaFai Lau void test_btf_map_in_map(void)
134d557ea39SMartin KaFai Lau {
135d557ea39SMartin KaFai Lau if (test__start_subtest("lookup_update"))
136d557ea39SMartin KaFai Lau test_lookup_update();
137d557ea39SMartin KaFai Lau
138d557ea39SMartin KaFai Lau if (test__start_subtest("diff_size"))
139d557ea39SMartin KaFai Lau test_diff_size();
140d557ea39SMartin KaFai Lau }
141