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" ) |
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" ) |
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" ) |
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 | |