1768 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_init()
2284 		icsk->icsk_mtup.probe_size = 0;  in tcp_mtu_check_reprobe()
2328 	int probe_size;  in tcp_mtu_probe()  local
2340 		   icsk->icsk_mtup.probe_size ||  in tcp_mtu_probe()
2351 	probe_size = tcp_mtu_to_mss(sk, (icsk->icsk_mtup.search_high +  in tcp_mtu_probe()
2353 	size_needed = probe_size + (tp->reordering + 1) * tp->mss_cache;  in tcp_mtu_probe()
2359 	if (probe_size > tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_high) ||  in tcp_mtu_probe()
2385 	if (!tcp_can_coalesce_send_queue_head(sk, probe_size))  in tcp_mtu_probe()
2389 	nskb = sk_stream_alloc_skb(sk, probe_size, GFP_ATOMIC, false);  in tcp_mtu_probe()
2399 	TCP_SKB_CB(nskb)->end_seq = TCP_SKB_CB(skb)->seq + probe_size;  in tcp_mtu_probe()
2410 		copy = min_t(int, skb->len, probe_size - len);  in tcp_mtu_probe()
2438 		if (len >= probe_size)  in tcp_mtu_probe()
2452 		icsk->icsk_mtup.probe_size = tcp_mss_to_mtu(sk, nskb->len);  in tcp_mtu_probe()
3143 	if (icsk->icsk_mtup.probe_size)  in __tcp_retransmit_skb()
3144 		icsk->icsk_mtup.probe_size = 0;  in __tcp_retransmit_skb()