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
BPF_PROG(test_read_cpumask,struct task_struct * task,u64 clone_flags)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
BPF_PROG(test_skb_field,struct sock * sk,struct sk_buff * skb)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