1// SPDX-License-Identifier: GPL-2.0
 2#include <stdio.h>
 3#include <assert.h>
 4#include <linux/bpf.h>
 5#include <bpf/bpf.h>
 6#include <bpf/libbpf.h>
 7#include "sock_example.h"
 8#include <unistd.h>
 9#include <arpa/inet.h>
10
11int main(int ac, char **argv)
12{
13	struct bpf_object *obj;
14	struct bpf_program *prog;
15	int map_fd, prog_fd;
16	char filename[256];
17	int i, sock, err;
18	FILE *f;
 
19
20	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
21
22	obj = bpf_object__open_file(filename, NULL);
23	if (libbpf_get_error(obj))
24		return 1;
25
26	prog = bpf_object__next_program(obj, NULL);
27	bpf_program__set_type(prog, BPF_PROG_TYPE_SOCKET_FILTER);
28
29	err = bpf_object__load(obj);
30	if (err)
31		return 1;
32
33	prog_fd = bpf_program__fd(prog);
34	map_fd = bpf_object__find_map_fd_by_name(obj, "my_map");
35
36	sock = open_raw_sock("lo");
37
38	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
39			  sizeof(prog_fd)) == 0);
40
41	f = popen("ping -4 -c5 localhost", "r");
42	(void) f;
43
44	for (i = 0; i < 5; i++) {
45		long long tcp_cnt, udp_cnt, icmp_cnt;
46		int key;
47
48		key = IPPROTO_TCP;
49		assert(bpf_map_lookup_elem(map_fd, &key, &tcp_cnt) == 0);
50
51		key = IPPROTO_UDP;
52		assert(bpf_map_lookup_elem(map_fd, &key, &udp_cnt) == 0);
53
54		key = IPPROTO_ICMP;
55		assert(bpf_map_lookup_elem(map_fd, &key, &icmp_cnt) == 0);
56
57		printf("TCP %lld UDP %lld ICMP %lld bytes\n",
58		       tcp_cnt, udp_cnt, icmp_cnt);
59		sleep(1);
60	}
61
62	return 0;
63}

 
 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}