From: Eric Dumazet <edumazet@google.com>
Date: Fri, 31 Jan 2020 18:32:41 +0000 (-0800)
Subject: tcp: clear tp->data_segs{in|out} in tcp_disconnect()
X-Git-Tag: v5.4.19~293
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=31fceaf085978d7c2373ea25f4be641de42b69b8;p=platform%2Fkernel%2Flinux-rpi.git

tcp: clear tp->data_segs{in|out} in tcp_disconnect()

[ Upstream commit db7ffee6f3eb3683cdcaeddecc0a630a14546fe3 ]

tp->data_segs_in and tp->data_segs_out need to be cleared
in tcp_disconnect().

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

Fixes: a44d6eacdaf5 ("tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Martin KaFai Lau <kafai@fb.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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 5b251643c514..79e10d26e2ba 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2639,6 +2639,8 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->bytes_acked = 0;
 	tp->bytes_received = 0;
 	tp->bytes_retrans = 0;
+	tp->data_segs_in = 0;
+	tp->data_segs_out = 0;
 	tp->duplicate_sack[0].start_seq = 0;
 	tp->duplicate_sack[0].end_seq = 0;
 	tp->dsack_dups = 0;