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1 #include <stdio.h>
2 #include <assert.h>
3 #include <linux/bpf.h>
4 #include "libbpf.h"
5 #include "bpf_load.h"
6 #include "sock_example.h"
7 #include <unistd.h>
8 #include <arpa/inet.h>
9 #include <sys/resource.h>
10
11 struct pair {
12 __u64 packets;
13 __u64 bytes;
14 };
15
16 int main(int ac, char **argv)
17 {
18 struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
19 char filename[256];
20 FILE *f;
21 int i, sock;
22
23 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
24 setrlimit(RLIMIT_MEMLOCK, &r);
25
26 if (load_bpf_file(filename)) {
27 printf("%s", bpf_log_buf);
28 return 1;
29 }
30
31 sock = open_raw_sock("lo");
32
33 assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
34 sizeof(prog_fd[0])) == 0);
35
36 f = popen("ping -c5 localhost", "r");
37 (void) f;
38
39 for (i = 0; i < 5; i++) {
40 int key = 0, next_key;
41 struct pair value;
42
43 while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) {
44 bpf_map_lookup_elem(map_fd[0], &next_key, &value);
45 printf("ip %s bytes %lld packets %lld\n",
46 inet_ntoa((struct in_addr){htonl(next_key)}),
47 value.bytes, value.packets);
48 key = next_key;
49 }
50 sleep(1);
51 }
52 return 0;
53 }