netdev - [PATCH net] tcp: clear tp->total_retrans in tcp

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Message-Id: <20200131171447.102357-1-edumazet@google.com>
Date:   Fri, 31 Jan 2020 09:14:47 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Neal Cardwell <ncardwell@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        SeongJae Park <sjpark@...zon.de>
Subject: [PATCH net] tcp: clear tp->total_retrans in tcp_disconnect()

total_retrans needs to be cleared in tcp_disconnect().

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

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: SeongJae Park <sjpark@...zon.de>
---
 net/ipv4/tcp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 484485ae74c26eb43d49d972e068bcf5d0e33d58..dd57f1e3618160c1e51d6ff54afa984292614e5c 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2626,6 +2626,7 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tcp_set_ca_state(sk, TCP_CA_Open);
 	tp->is_sack_reneg = 0;
 	tcp_clear_retrans(tp);
+	tp->total_retrans = 0;
 	inet_csk_delack_init(sk);
 	/* Initialize rcv_mss to TCP_MIN_MSS to avoid division by 0
 	 * issue in __tcp_select_window()
-- 
2.25.0.341.g760bfbb309-goog