// 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 = -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 = bpf_kfunc_call_test3((struct sock *)sk)->__sk_common.skc_state; return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4); } SEC("classifier") int kfunc_call_test1(struct __sk_buff *skb) { return f1(skb); } char _license[] SEC("license") = "GPL";