License cleanup: add SPDX GPL-2.0 license identifier to files with no license
[linux-2.6-block.git] / samples / bpf / sockex2_user.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <stdio.h>
3 #include <assert.h>
4 #include <linux/bpf.h>
5 #include "libbpf.h"
6 #include "bpf_load.h"
7 #include "sock_example.h"
8 #include <unistd.h>
9 #include <arpa/inet.h>
10 #include <sys/resource.h>
11
12 struct pair {
13         __u64 packets;
14         __u64 bytes;
15 };
16
17 int main(int ac, char **argv)
18 {
19         struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
20         char filename[256];
21         FILE *f;
22         int i, sock;
23
24         snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
25         setrlimit(RLIMIT_MEMLOCK, &r);
26
27         if (load_bpf_file(filename)) {
28                 printf("%s", bpf_log_buf);
29                 return 1;
30         }
31
32         sock = open_raw_sock("lo");
33
34         assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
35                           sizeof(prog_fd[0])) == 0);
36
37         f = popen("ping -c5 localhost", "r");
38         (void) f;
39
40         for (i = 0; i < 5; i++) {
41                 int key = 0, next_key;
42                 struct pair value;
43
44                 while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) {
45                         bpf_map_lookup_elem(map_fd[0], &next_key, &value);
46                         printf("ip %s bytes %lld packets %lld\n",
47                                inet_ntoa((struct in_addr){htonl(next_key)}),
48                                value.bytes, value.packets);
49                         key = next_key;
50                 }
51                 sleep(1);
52         }
53         return 0;
54 }