Commit 38d7e444 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

tcp: call tcp_measure_rcv_mss() for ooo packets 



tcp_measure_rcv_mss() is used to update icsk->icsk_ack.rcv_mss
(tcpi_rcv_mss in tcp_info) and tp->scaling_ratio.

Calling it from tcp_data_queue_ofo() makes sure these
fields are updated, and permits a better tuning
of sk->sk_rcvbuf, in the case a new flow receives many ooo
packets.

Fixes: dfa2f048 ("tcp: get rid of sysctl_tcp_adv_win_scale")
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250711114006.480026-5-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent f5fda1a8

net/ipv4/tcp_input.c

+1 −0
Original line number Diff line number Diff line
@@ -4923,6 +4923,7 @@ static void tcp_data_queue_ofo(struct sock *sk, struct sk_buff *skb) 
		return;

	}



	tcp_measure_rcv_mss(sk, skb);

	/* Disable header prediction. */

	tp->pred_flags = 0;

	inet_csk_schedule_ack(sk);