From: John Heffner <jheffner@psc.edu>
Date: Tue, 6 Feb 2007 01:53:11 +0000 (-0800)
Subject: [TCP]: Don't apply FIN exception to full TSO segments.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=104439a8876a98eac1b6593907a3c7bc51e362fe;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[TCP]: Don't apply FIN exception to full TSO segments.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 975f4472af29..58b7111523f4 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -965,7 +965,8 @@ static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp, struct sk_buff *sk
 	u32 in_flight, cwnd;
 
 	/* Don't be strict about the congestion window for the final FIN.  */
-	if (TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN)
+	if ((TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN) &&
+	    tcp_skb_pcount(skb) == 1)
 		return 1;
 
 	in_flight = tcp_packets_in_flight(tp);