mirror of https://gitee.com/openkylin/linux.git
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) 2017 Facebook
|
|
*/
|
|
#include <sys/resource.h>
|
|
#include <sys/socket.h>
|
|
#include <arpa/inet.h>
|
|
#include <stdint.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <bpf/bpf.h>
|
|
#include "bpf_load.h"
|
|
|
|
#define PORT_A (map_fd[0])
|
|
#define PORT_H (map_fd[1])
|
|
#define REG_RESULT_H (map_fd[2])
|
|
#define INLINE_RESULT_H (map_fd[3])
|
|
#define A_OF_PORT_A (map_fd[4]) /* Test case #0 */
|
|
#define H_OF_PORT_A (map_fd[5]) /* Test case #1 */
|
|
#define H_OF_PORT_H (map_fd[6]) /* Test case #2 */
|
|
|
|
static const char * const test_names[] = {
|
|
"Array of Array",
|
|
"Hash of Array",
|
|
"Hash of Hash",
|
|
};
|
|
|
|
#define NR_TESTS (sizeof(test_names) / sizeof(*test_names))
|
|
|
|
static void check_map_id(int inner_map_fd, int map_in_map_fd, uint32_t key)
|
|
{
|
|
struct bpf_map_info info = {};
|
|
uint32_t info_len = sizeof(info);
|
|
int ret, id;
|
|
|
|
ret = bpf_obj_get_info_by_fd(inner_map_fd, &info, &info_len);
|
|
assert(!ret);
|
|
|
|
ret = bpf_map_lookup_elem(map_in_map_fd, &key, &id);
|
|
assert(!ret);
|
|
assert(id == info.id);
|
|
}
|
|
|
|
static void populate_map(uint32_t port_key, int magic_result)
|
|
{
|
|
int ret;
|
|
|
|
ret = bpf_map_update_elem(PORT_A, &port_key, &magic_result, BPF_ANY);
|
|
assert(!ret);
|
|
|
|
ret = bpf_map_update_elem(PORT_H, &port_key, &magic_result,
|
|
BPF_NOEXIST);
|
|
assert(!ret);
|
|
|
|
ret = bpf_map_update_elem(A_OF_PORT_A, &port_key, &PORT_A, BPF_ANY);
|
|
assert(!ret);
|
|
check_map_id(PORT_A, A_OF_PORT_A, port_key);
|
|
|
|
ret = bpf_map_update_elem(H_OF_PORT_A, &port_key, &PORT_A, BPF_NOEXIST);
|
|
assert(!ret);
|
|
check_map_id(PORT_A, H_OF_PORT_A, port_key);
|
|
|
|
ret = bpf_map_update_elem(H_OF_PORT_H, &port_key, &PORT_H, BPF_NOEXIST);
|
|
assert(!ret);
|
|
check_map_id(PORT_H, H_OF_PORT_H, port_key);
|
|
}
|
|
|
|
static void test_map_in_map(void)
|
|
{
|
|
struct sockaddr_in6 in6 = { .sin6_family = AF_INET6 };
|
|
uint32_t result_key = 0, port_key;
|
|
int result, inline_result;
|
|
int magic_result = 0xfaceb00c;
|
|
int ret;
|
|
int i;
|
|
|
|
port_key = rand() & 0x00FF;
|
|
populate_map(port_key, magic_result);
|
|
|
|
in6.sin6_addr.s6_addr16[0] = 0xdead;
|
|
in6.sin6_addr.s6_addr16[1] = 0xbeef;
|
|
in6.sin6_port = port_key;
|
|
|
|
for (i = 0; i < NR_TESTS; i++) {
|
|
printf("%s: ", test_names[i]);
|
|
|
|
in6.sin6_addr.s6_addr16[7] = i;
|
|
ret = connect(-1, (struct sockaddr *)&in6, sizeof(in6));
|
|
assert(ret == -1 && errno == EBADF);
|
|
|
|
ret = bpf_map_lookup_elem(REG_RESULT_H, &result_key, &result);
|
|
assert(!ret);
|
|
|
|
ret = bpf_map_lookup_elem(INLINE_RESULT_H, &result_key,
|
|
&inline_result);
|
|
assert(!ret);
|
|
|
|
if (result != magic_result || inline_result != magic_result) {
|
|
printf("Error. result:%d inline_result:%d\n",
|
|
result, inline_result);
|
|
exit(1);
|
|
}
|
|
|
|
bpf_map_delete_elem(REG_RESULT_H, &result_key);
|
|
bpf_map_delete_elem(INLINE_RESULT_H, &result_key);
|
|
|
|
printf("Pass\n");
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
|
|
char filename[256];
|
|
|
|
assert(!setrlimit(RLIMIT_MEMLOCK, &r));
|
|
|
|
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
|
|
|
|
if (load_bpf_file(filename)) {
|
|
printf("%s", bpf_log_buf);
|
|
return 1;
|
|
}
|
|
|
|
test_map_in_map();
|
|
|
|
return 0;
|
|
}
|