1 // SPDX-License-Identifier: GPL-2.0
6 #include <bpf/libbpf.h>
7 #include "sock_example.h"
11 int main(int ac
, char **argv
)
13 struct bpf_object
*obj
;
19 snprintf(filename
, sizeof(filename
), "%s_kern.o", argv
[0]);
21 if (bpf_prog_load(filename
, BPF_PROG_TYPE_SOCKET_FILTER
,
25 map_fd
= bpf_object__find_map_fd_by_name(obj
, "my_map");
27 sock
= open_raw_sock("lo");
29 assert(setsockopt(sock
, SOL_SOCKET
, SO_ATTACH_BPF
, &prog_fd
,
30 sizeof(prog_fd
)) == 0);
32 f
= popen("ping -4 -c5 localhost", "r");
35 for (i
= 0; i
< 5; i
++) {
36 long long tcp_cnt
, udp_cnt
, icmp_cnt
;
40 assert(bpf_map_lookup_elem(map_fd
, &key
, &tcp_cnt
) == 0);
43 assert(bpf_map_lookup_elem(map_fd
, &key
, &udp_cnt
) == 0);
46 assert(bpf_map_lookup_elem(map_fd
, &key
, &icmp_cnt
) == 0);
48 printf("TCP %lld UDP %lld ICMP %lld bytes\n",
49 tcp_cnt
, udp_cnt
, icmp_cnt
);