map2_fd 215 tools/testing/selftests/bpf/test_progs.c int compare_map_keys(int map1_fd, int map2_fd) map2_fd 225 tools/testing/selftests/bpf/test_progs.c err = bpf_map_lookup_elem(map2_fd, &key, val_buf); map2_fd 230 tools/testing/selftests/bpf/test_progs.c err = bpf_map_lookup_elem(map2_fd, &next_key, val_buf); map2_fd 132 tools/testing/selftests/bpf/test_progs.h int compare_map_keys(int map1_fd, int map2_fd);