1 // SPDX-License-Identifier: GPL-2.0-only
2
3 /*
4 * Copyright 2020 Google LLC.
5 */
6
7 #include <errno.h>
8 #include <linux/bpf.h>
9 #include <linux/ip.h>
10 #include <linux/udp.h>
11 #include <bpf/bpf_helpers.h>
12
13 #include "progs/cg_storage_multi.h"
14
15 struct {
16 __uint(type, BPF_MAP_TYPE_CGROUP_STORAGE);
17 __type(key, struct bpf_cgroup_storage_key);
18 __type(value, struct cgroup_value);
19 } cgroup_storage SEC(".maps");
20
21 __u32 invocations = 0;
22
23 SEC("cgroup_skb/egress")
egress1(struct __sk_buff * skb)24 int egress1(struct __sk_buff *skb)
25 {
26 struct cgroup_value *ptr_cg_storage =
27 bpf_get_local_storage(&cgroup_storage, 0);
28
29 __sync_fetch_and_add(&ptr_cg_storage->egress_pkts, 1);
30 __sync_fetch_and_add(&invocations, 1);
31
32 return 1;
33 }
34
35 SEC("cgroup_skb/egress")
egress2(struct __sk_buff * skb)36 int egress2(struct __sk_buff *skb)
37 {
38 struct cgroup_value *ptr_cg_storage =
39 bpf_get_local_storage(&cgroup_storage, 0);
40
41 __sync_fetch_and_add(&ptr_cg_storage->egress_pkts, 1);
42 __sync_fetch_and_add(&invocations, 1);
43
44 return 1;
45 }
46
47 SEC("cgroup_skb/ingress")
ingress(struct __sk_buff * skb)48 int ingress(struct __sk_buff *skb)
49 {
50 struct cgroup_value *ptr_cg_storage =
51 bpf_get_local_storage(&cgroup_storage, 0);
52
53 __sync_fetch_and_add(&ptr_cg_storage->ingress_pkts, 1);
54 __sync_fetch_and_add(&invocations, 1);
55
56 return 1;
57 }
58