1 #include <linux/bpf.h>
2 #include <bpf/bpf_helpers.h>
3 #include <bpf/bpf_endian.h>
4
5 struct {
6 __uint(type, BPF_MAP_TYPE_SOCKMAP);
7 __uint(max_entries, 20);
8 __type(key, int);
9 __type(value, int);
10 } sock_map_rx SEC(".maps");
11
12 struct {
13 __uint(type, BPF_MAP_TYPE_SOCKMAP);
14 __uint(max_entries, 20);
15 __type(key, int);
16 __type(value, int);
17 } sock_map_tx SEC(".maps");
18
19 struct {
20 __uint(type, BPF_MAP_TYPE_SOCKMAP);
21 __uint(max_entries, 20);
22 __type(key, int);
23 __type(value, int);
24 } sock_map_msg SEC(".maps");
25
26 SEC("sk_skb")
prog_skb_verdict(struct __sk_buff * skb)27 int prog_skb_verdict(struct __sk_buff *skb)
28 {
29 return SK_DROP;
30 }
31
32 char _license[] SEC("license") = "GPL";
33