43 lines
948 B
C
43 lines
948 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (c) 2021 Facebook */
|
||
|
|
#include <linux/bpf.h>
|
||
|
|
#include <bpf/bpf_helpers.h>
|
||
|
|
#include "bpf_tcp_helpers.h"
|
||
|
|
|
||
|
|
extern const int bpf_prog_active __ksym;
|
||
|
|
extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
|
||
|
|
__u32 c, __u64 d) __ksym;
|
||
|
|
extern struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym;
|
||
|
|
int active_res = -1;
|
||
|
|
int sk_state_res = -1;
|
||
|
|
|
||
|
|
int __noinline f1(struct __sk_buff *skb)
|
||
|
|
{
|
||
|
|
struct bpf_sock *sk = skb->sk;
|
||
|
|
int *active;
|
||
|
|
|
||
|
|
if (!sk)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
sk = bpf_sk_fullsock(sk);
|
||
|
|
if (!sk)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
active = (int *)bpf_per_cpu_ptr(&bpf_prog_active,
|
||
|
|
bpf_get_smp_processor_id());
|
||
|
|
if (active)
|
||
|
|
active_res = *active;
|
||
|
|
|
||
|
|
sk_state_res = bpf_kfunc_call_test3((struct sock *)sk)->sk_state;
|
||
|
|
|
||
|
|
return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4);
|
||
|
|
}
|
||
|
|
|
||
|
|
SEC("tc")
|
||
|
|
int kfunc_call_test1(struct __sk_buff *skb)
|
||
|
|
{
|
||
|
|
return f1(skb);
|
||
|
|
}
|
||
|
|
|
||
|
|
char _license[] SEC("license") = "GPL";
|