Merge tag 'xfs-5.12-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
[linux-2.6-microblaze.git] / samples / bpf / sockex2_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 #include <sys/resource.h>
11
12 struct pair {
13         __u64 packets;
14         __u64 bytes;
15 };
16
17 int main(int ac, char **argv)
18 {
19         struct bpf_object *obj;
20         int map_fd, prog_fd;
21         char filename[256];
22         int i, sock;
23         FILE *f;
24
25         snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
26
27         if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
28                           &obj, &prog_fd))
29                 return 1;
30
31         map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map");
32
33         sock = open_raw_sock("lo");
34
35         assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
36                           sizeof(prog_fd)) == 0);
37
38         f = popen("ping -4 -c5 localhost", "r");
39         (void) f;
40
41         for (i = 0; i < 5; i++) {
42                 int key = 0, next_key;
43                 struct pair value;
44
45                 while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) {
46                         bpf_map_lookup_elem(map_fd, &next_key, &value);
47                         printf("ip %s bytes %lld packets %lld\n",
48                                inet_ntoa((struct in_addr){htonl(next_key)}),
49                                value.bytes, value.packets);
50                         key = next_key;
51                 }
52                 sleep(1);
53         }
54         return 0;
55 }