1 // SPDX-License-Identifier: GPL-2.0
6 #include <bpf/libbpf.h>
7 #include "sock_example.h"
10 #include <sys/resource.h>
17 int main(int ac, char **argv)
19 struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
20 struct bpf_object *obj;
26 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
27 setrlimit(RLIMIT_MEMLOCK, &r);
29 if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
33 map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map");
35 sock = open_raw_sock("lo");
37 assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
38 sizeof(prog_fd)) == 0);
40 f = popen("ping -4 -c5 localhost", "r");
43 for (i = 0; i < 5; i++) {
44 int key = 0, next_key;
47 while (bpf_map_get_next_key(map_fd, &key, &next_key) == 0) {
48 bpf_map_lookup_elem(map_fd, &next_key, &value);
49 printf("ip %s bytes %lld packets %lld\n",
50 inet_ntoa((struct in_addr){htonl(next_key)}),
51 value.bytes, value.packets);