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Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001// SPDX-License-Identifier: GPL-2.0
Alexei Starovoitovfbe33102014-12-01 15:06:39 -08002#include <stdio.h>
3#include <assert.h>
4#include <linux/bpf.h>
Jakub Kicinski2bf3e2e2018-05-14 22:35:02 -07005#include <bpf/bpf.h>
Toke Høiland-Jørgensen7cf245a2020-01-20 14:06:49 +01006#include <bpf/libbpf.h>
Joe Stringer98996942016-12-08 18:46:20 -08007#include "sock_example.h"
Alexei Starovoitovfbe33102014-12-01 15:06:39 -08008#include <unistd.h>
9#include <arpa/inet.h>
William Tueb88d582016-06-21 21:05:58 -070010#include <sys/resource.h>
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080011
Alexei Starovoitov614cd3b2015-03-13 11:57:43 -070012struct pair {
13 __u64 packets;
14 __u64 bytes;
15};
16
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080017int main(int ac, char **argv)
18{
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080019 struct bpf_object *obj;
20 int map_fd, prog_fd;
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080021 char filename[256];
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080022 int i, sock;
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080023 FILE *f;
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080024
25 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
26
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080027 if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
28 &obj, &prog_fd))
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080029 return 1;
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080030
31 map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map");
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080032
33 sock = open_raw_sock("lo");
34
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080035 assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
36 sizeof(prog_fd)) == 0);
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080037
Jakub Kicinski5c3cf872019-02-27 19:04:10 -080038 f = popen("ping -4 -c5 localhost", "r");
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080039 (void) f;
40
41 for (i = 0; i < 5; i++) {
42 int key = 0, next_key;
Alexei Starovoitov614cd3b2015-03-13 11:57:43 -070043 struct pair value;
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080044
Jakub Kicinski1a9b2682019-02-27 19:04:13 -080045 while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) {
46 bpf_map_lookup_elem(map_fd, &next_key, &value);
Alexei Starovoitov614cd3b2015-03-13 11:57:43 -070047 printf("ip %s bytes %lld packets %lld\n",
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080048 inet_ntoa((struct in_addr){htonl(next_key)}),
Alexei Starovoitov614cd3b2015-03-13 11:57:43 -070049 value.bytes, value.packets);
Alexei Starovoitovfbe33102014-12-01 15:06:39 -080050 key = next_key;
51 }
52 sleep(1);
53 }
54 return 0;
55}