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Note: File does not exist in v3.1.
 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
11int main(int ac, char **argv)
12{
13	char filename[256];
14	FILE *f;
15	int i, sock;
16
17	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
18
19	if (load_bpf_file(filename)) {
20		printf("%s", bpf_log_buf);
21		return 1;
22	}
23
24	sock = open_raw_sock("lo");
25
26	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
27			  sizeof(prog_fd[0])) == 0);
28
29	f = popen("ping -c5 localhost", "r");
30	(void) f;
31
32	for (i = 0; i < 5; i++) {
33		long long tcp_cnt, udp_cnt, icmp_cnt;
34		int key;
35
36		key = IPPROTO_TCP;
37		assert(bpf_map_lookup_elem(map_fd[0], &key, &tcp_cnt) == 0);
38
39		key = IPPROTO_UDP;
40		assert(bpf_map_lookup_elem(map_fd[0], &key, &udp_cnt) == 0);
41
42		key = IPPROTO_ICMP;
43		assert(bpf_map_lookup_elem(map_fd[0], &key, &icmp_cnt) == 0);
44
45		printf("TCP %lld UDP %lld ICMP %lld bytes\n",
46		       tcp_cnt, udp_cnt, icmp_cnt);
47		sleep(1);
48	}
49
50	return 0;
51}