tls_device_sk_destruct
void tls_device_sk_destruct(struct sock *sk);
smp_load_acquire(&sk->sk_destruct) != tls_device_sk_destruct)
if (sk->sk_destruct != tls_device_sk_destruct) {
smp_store_release(&sk->sk_destruct, tls_device_sk_destruct);
EXPORT_SYMBOL_GPL(tls_device_sk_destruct);