[PATCH 4.9 012/116] tcp: clear tp->delivered in tcp_disconnect()

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From: Eric Dumazet <edumazet@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Cc: Yuchung Cheng <ycheng@xxxxxxxxxx>
Cc: Neal Cardwell <ncardwell@xxxxxxxxxx>
Acked-by: Yuchung Cheng <ycheng@xxxxxxxxxx>
Acked-by: Neal Cardwell <ncardwell@xxxxxxxxxx>
Acked-by: Soheil Hassas Yeganeh <soheil@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ipv4/tcp.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2298,6 +2298,7 @@ int tcp_disconnect(struct sock *sk, int
 	tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
 	tp->snd_cwnd_cnt = 0;
 	tp->window_clamp = 0;
+	tp->delivered = 0;
 	tcp_set_ca_state(sk, TCP_CA_Open);
 	tp->is_sack_reneg = 0;
 	tcp_clear_retrans(tp);





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