1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2022 Bytedance */ 3 4 #include <test_progs.h> 5 #include "test_map_lookup_percpu_elem.skel.h" 6 7 void test_map_lookup_percpu_elem(void) 8 { 9 struct test_map_lookup_percpu_elem *skel; 10 __u64 key = 0, sum; 11 int ret, i, nr_cpus = libbpf_num_possible_cpus(); 12 __u64 *buf; 13 14 buf = malloc(nr_cpus*sizeof(__u64)); 15 if (!ASSERT_OK_PTR(buf, "malloc")) 16 return; 17 18 for (i = 0; i < nr_cpus; i++) 19 buf[i] = i; 20 sum = (nr_cpus - 1) * nr_cpus / 2; 21 22 skel = test_map_lookup_percpu_elem__open(); 23 if (!ASSERT_OK_PTR(skel, "test_map_lookup_percpu_elem__open")) 24 goto exit; 25 26 skel->rodata->my_pid = getpid(); 27 skel->rodata->nr_cpus = nr_cpus; 28 29 ret = test_map_lookup_percpu_elem__load(skel); 30 if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__load")) 31 goto cleanup; 32 33 ret = test_map_lookup_percpu_elem__attach(skel); 34 if (!ASSERT_OK(ret, "test_map_lookup_percpu_elem__attach")) 35 goto cleanup; 36 37 ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_array_map), &key, buf, 0); 38 ASSERT_OK(ret, "percpu_array_map update"); 39 40 ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_hash_map), &key, buf, 0); 41 ASSERT_OK(ret, "percpu_hash_map update"); 42 43 ret = bpf_map_update_elem(bpf_map__fd(skel->maps.percpu_lru_hash_map), &key, buf, 0); 44 ASSERT_OK(ret, "percpu_lru_hash_map update"); 45 46 syscall(__NR_getuid); 47 48 test_map_lookup_percpu_elem__detach(skel); 49 50 ASSERT_EQ(skel->bss->percpu_array_elem_sum, sum, "percpu_array lookup percpu elem"); 51 ASSERT_EQ(skel->bss->percpu_hash_elem_sum, sum, "percpu_hash lookup percpu elem"); 52 ASSERT_EQ(skel->bss->percpu_lru_hash_elem_sum, sum, "percpu_lru_hash lookup percpu elem"); 53 54 cleanup: 55 test_map_lookup_percpu_elem__destroy(skel); 56 exit: 57 free(buf); 58 } 59