1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */ |
3 | |
4 | #include <vmlinux.h> |
5 | #include <bpf/bpf_tracing.h> |
6 | #include <bpf/bpf_helpers.h> |
7 | #include "bpf_misc.h" |
8 | |
9 | #include "nested_trust_common.h" |
10 | |
11 | char _license[] SEC("license" ) = "GPL" ; |
12 | |
13 | struct { |
14 | __uint(type, BPF_MAP_TYPE_SK_STORAGE); |
15 | __uint(map_flags, BPF_F_NO_PREALLOC); |
16 | __type(key, int); |
17 | __type(value, u64); |
18 | } sk_storage_map SEC(".maps" ); |
19 | |
20 | SEC("tp_btf/task_newtask" ) |
21 | __success |
22 | int BPF_PROG(test_read_cpumask, struct task_struct *task, u64 clone_flags) |
23 | { |
24 | bpf_cpumask_test_cpu(0, task->cpus_ptr); |
25 | return 0; |
26 | } |
27 | |
28 | SEC("tp_btf/tcp_probe" ) |
29 | __success |
30 | int BPF_PROG(test_skb_field, struct sock *sk, struct sk_buff *skb) |
31 | { |
32 | bpf_sk_storage_get(&sk_storage_map, skb->sk, 0, 0); |
33 | return 0; |
34 | } |
35 | |