1#include <stdio.h>
 2#include <assert.h>
 3#include <linux/bpf.h>
 4#include "libbpf.h"
 5#include "bpf_load.h"
 
 6#include <unistd.h>
 7#include <arpa/inet.h>
 8
 9int main(int ac, char **argv)
10{
11	char filename[256];
12	FILE *f;
13	int i, sock;
14
15	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
16
17	if (load_bpf_file(filename)) {
18		printf("%s", bpf_log_buf);
19		return 1;
20	}
21
22	sock = open_raw_sock("lo");
23
24	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
25			  sizeof(prog_fd[0])) == 0);
26
27	f = popen("ping -c5 localhost", "r");
28	(void) f;
29
30	for (i = 0; i < 5; i++) {
31		long long tcp_cnt, udp_cnt, icmp_cnt;
32		int key;
33
34		key = IPPROTO_TCP;
35		assert(bpf_lookup_elem(map_fd[0], &key, &tcp_cnt) == 0);
36
37		key = IPPROTO_UDP;
38		assert(bpf_lookup_elem(map_fd[0], &key, &udp_cnt) == 0);
39
40		key = IPPROTO_ICMP;
41		assert(bpf_lookup_elem(map_fd[0], &key, &icmp_cnt) == 0);
42
43		printf("TCP %lld UDP %lld ICMP %lld bytes\n",
44		       tcp_cnt, udp_cnt, icmp_cnt);
45		sleep(1);
46	}
47
48	return 0;
49}

 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
10int main(int ac, char **argv)
11{
12	char filename[256];
13	FILE *f;
14	int i, sock;
15
16	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
17
18	if (load_bpf_file(filename)) {
19		printf("%s", bpf_log_buf);
20		return 1;
21	}
22
23	sock = open_raw_sock("lo");
24
25	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
26			  sizeof(prog_fd[0])) == 0);
27
28	f = popen("ping -c5 localhost", "r");
29	(void) f;
30
31	for (i = 0; i < 5; i++) {
32		long long tcp_cnt, udp_cnt, icmp_cnt;
33		int key;
34
35		key = IPPROTO_TCP;
36		assert(bpf_map_lookup_elem(map_fd[0], &key, &tcp_cnt) == 0);
37
38		key = IPPROTO_UDP;
39		assert(bpf_map_lookup_elem(map_fd[0], &key, &udp_cnt) == 0);
40
41		key = IPPROTO_ICMP;
42		assert(bpf_map_lookup_elem(map_fd[0], &key, &icmp_cnt) == 0);
43
44		printf("TCP %lld UDP %lld ICMP %lld bytes\n",
45		       tcp_cnt, udp_cnt, icmp_cnt);
46		sleep(1);
47	}
48
49	return 0;
50}