2 * Copyright (c) 2017 Facebook
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
8 #include <sys/resource.h>
9 #include <sys/socket.h>
10 #include <arpa/inet.h>
19 #define PORT_A (map_fd[0])
20 #define PORT_H (map_fd[1])
21 #define REG_RESULT_H (map_fd[2])
22 #define INLINE_RESULT_H (map_fd[3])
23 #define A_OF_PORT_A (map_fd[4]) /* Test case #0 */
24 #define H_OF_PORT_A (map_fd[5]) /* Test case #1 */
25 #define H_OF_PORT_H (map_fd[6]) /* Test case #2 */
27 static const char * const test_names[] = {
33 #define NR_TESTS (sizeof(test_names) / sizeof(*test_names))
35 static void populate_map(uint32_t port_key, int magic_result)
39 ret = bpf_map_update_elem(PORT_A, &port_key, &magic_result, BPF_ANY);
42 ret = bpf_map_update_elem(PORT_H, &port_key, &magic_result,
46 ret = bpf_map_update_elem(A_OF_PORT_A, &port_key, &PORT_A, BPF_ANY);
49 ret = bpf_map_update_elem(H_OF_PORT_A, &port_key, &PORT_A, BPF_NOEXIST);
52 ret = bpf_map_update_elem(H_OF_PORT_H, &port_key, &PORT_H, BPF_NOEXIST);
56 static void test_map_in_map(void)
58 struct sockaddr_in6 in6 = { .sin6_family = AF_INET6 };
59 uint32_t result_key = 0, port_key;
60 int result, inline_result;
61 int magic_result = 0xfaceb00c;
65 port_key = rand() & 0x00FF;
66 populate_map(port_key, magic_result);
68 in6.sin6_addr.s6_addr16[0] = 0xdead;
69 in6.sin6_addr.s6_addr16[1] = 0xbeef;
70 in6.sin6_port = port_key;
72 for (i = 0; i < NR_TESTS; i++) {
73 printf("%s: ", test_names[i]);
75 in6.sin6_addr.s6_addr16[7] = i;
76 ret = connect(-1, (struct sockaddr *)&in6, sizeof(in6));
77 assert(ret == -1 && errno == EBADF);
79 ret = bpf_map_lookup_elem(REG_RESULT_H, &result_key, &result);
82 ret = bpf_map_lookup_elem(INLINE_RESULT_H, &result_key,
86 if (result != magic_result || inline_result != magic_result) {
87 printf("Error. result:%d inline_result:%d\n",
88 result, inline_result);
92 bpf_map_delete_elem(REG_RESULT_H, &result_key);
93 bpf_map_delete_elem(INLINE_RESULT_H, &result_key);
99 int main(int argc, char **argv)
101 struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
104 assert(!setrlimit(RLIMIT_MEMLOCK, &r));
106 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
108 if (load_bpf_file(filename)) {
109 printf("%s", bpf_log_buf);