tcp: clear tp->delivered in tcp_disconnect()

[ Upstream commit 2fbdd56251b5c62f96589f39eded277260de7267 ]

tp->delivered needs to be cleared in tcp_disconnect().

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

Fixes: ddf1af6fa00e ("tcp: new delivery accounting")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@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 554ec2f..5b25164 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2618,6 +2618,7 @@ int tcp_disconnect(struct sock *sk, int flags)
        tp->snd_cwnd = TCP_INIT_CWND;
        tp->snd_cwnd_cnt = 0;
        tp->window_clamp = 0;
+       tp->delivered = 0;
        tp->delivered_ce = 0;
        tcp_set_ca_state(sk, TCP_CA_Open);
        tp->is_sack_reneg = 0;