Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[platform/kernel/linux-rpi.git] / samples / bpf / sockex1_user.c
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
11 int 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 }