24 int main(int argc, char **argv)
30 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
32 if (load_bpf_file(filename)) {
33 printf("%s", bpf_log_buf);
37 sock = open_raw_sock("lo");
39 assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd[4],
43 f = popen("ping -c5 localhost", "r");
45 f = popen("netperf -l 4 localhost", "r");
48 for (i = 0; i < 5; i++) {
49 struct flow_keys key = {}, next_key;
53 printf("IP src.port -> dst.port bytes packets\n");
54 while (bpf_get_next_key(map_fd[2], &key, &next_key) == 0) {
55 bpf_lookup_elem(map_fd[2], &next_key, &value);
56 printf("%s.%05d -> %s.%05d %12lld %12lld\n",
57 inet_ntoa((struct in_addr){htonl(next_key.src)}),
59 inet_ntoa((struct in_addr){htonl(next_key.dst)}),
61 value.bytes, value.packets);