Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
fbe33108 AS |
2 | #include <stdio.h> |
3 | #include <assert.h> | |
4 | #include <linux/bpf.h> | |
2bf3e2ef | 5 | #include <bpf/bpf.h> |
7cf245a3 | 6 | #include <bpf/libbpf.h> |
9899694a | 7 | #include "sock_example.h" |
fbe33108 AS |
8 | #include <unistd.h> |
9 | #include <arpa/inet.h> | |
10 | ||
614cd3bd AS |
11 | struct pair { |
12 | __u64 packets; | |
13 | __u64 bytes; | |
14 | }; | |
15 | ||
fbe33108 AS |
16 | int main(int ac, char **argv) |
17 | { | |
c58f9815 | 18 | struct bpf_program *prog; |
1a9b268c JK |
19 | struct bpf_object *obj; |
20 | int map_fd, prog_fd; | |
fbe33108 | 21 | char filename[256]; |
c58f9815 | 22 | int i, sock, err; |
1a9b268c | 23 | FILE *f; |
fbe33108 AS |
24 | |
25 | snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); | |
c58f9815 AN |
26 | obj = bpf_object__open_file(filename, NULL); |
27 | if (libbpf_get_error(obj)) | |
28 | return 1; | |
29 | ||
30 | prog = bpf_object__next_program(obj, NULL); | |
31 | bpf_program__set_type(prog, BPF_PROG_TYPE_SOCKET_FILTER); | |
fbe33108 | 32 | |
c58f9815 AN |
33 | err = bpf_object__load(obj); |
34 | if (err) | |
fbe33108 | 35 | return 1; |
1a9b268c | 36 | |
c58f9815 | 37 | prog_fd = bpf_program__fd(prog); |
1a9b268c | 38 | map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map"); |
fbe33108 AS |
39 | |
40 | sock = open_raw_sock("lo"); | |
41 | ||
1a9b268c JK |
42 | assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd, |
43 | sizeof(prog_fd)) == 0); | |
fbe33108 | 44 | |
5c3cf87d | 45 | f = popen("ping -4 -c5 localhost", "r"); |
fbe33108 AS |
46 | (void) f; |
47 | ||
48 | for (i = 0; i < 5; i++) { | |
49 | int key = 0, next_key; | |
614cd3bd | 50 | struct pair value; |
fbe33108 | 51 | |
1a9b268c JK |
52 | while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) { |
53 | bpf_map_lookup_elem(map_fd, &next_key, &value); | |
614cd3bd | 54 | printf("ip %s bytes %lld packets %lld\n", |
fbe33108 | 55 | inet_ntoa((struct in_addr){htonl(next_key)}), |
614cd3bd | 56 | value.bytes, value.packets); |
fbe33108 AS |
57 | key = next_key; |
58 | } | |
59 | sleep(1); | |
60 | } | |
61 | return 0; | |
62 | } |