release/5.2.39/tcp-clear-tp-segs_-in-out-in-tcp_disconnect.patch

From d808aff1bfadb4c157a06576269bb721f7aa1f0f Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Fri, 31 Jan 2020 10:44:50 -0800
Subject: [PATCH] tcp: clear tp->segs_{in|out} in tcp_disconnect()

commit 784f8344de750a41344f4bbbebb8507a730fc99c upstream.

tp->segs_in and tp->segs_out need to be cleared in tcp_disconnect().

tcp_disconnect() is rarely used, but it is worth fixing it.

Fixes: 2efd055c53c0 ("tcp: add tcpi_segs_in and tcpi_segs_out to tcp_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Marcelo Ricardo Leitner <mleitner@redhat.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 0c4ca9db7fb3..cad86a28d193 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2625,6 +2625,8 @@ int tcp_disconnect(struct sock *sk, int flags)
 	sk->sk_rx_dst = NULL;
 	tcp_saved_syn_free(tp);
 	tp->compressed_ack = 0;
+	tp->segs_in = 0;
+	tp->segs_out = 0;
 	tp->bytes_sent = 0;
 	tp->bytes_acked = 0;
 	tp->bytes_received = 0;
-- 
2.7.4