if (!tcp_skb_is_last(sk, skb)) nonagle = TCP_NAGLE_PUSH; if (!tcp_snd_test(sk, skb, cur_mss, nonagle) || tcp_write_xmit(sk, cur_mss, nonagle))
if (tcp_write_xmit(sk, cur_mss, nonagle))
void __tcp_push_pending_frames(struct sock *sk, struct tcp_sock *tp,			       unsigned int cur_mss, int nonagle){	struct sk_buff *skb = sk->sk_send_head;	if (skb) {		if (!tcp_skb_is_last(sk, skb))			nonagle = TCP_NAGLE_PUSH;		if (!tcp_snd_test(sk, skb, cur_mss, nonagle) ||		    tcp_write_xmit(sk, cur_mss, nonagle))			tcp_check_probe_timer(sk, tp);	}}