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Commit 01dd3672 authored by Christoph Paasch's avatar Christoph Paasch Committed by Greg Kroah-Hartman
Browse files

tcp: Reset bytes_acked and bytes_received when disconnecting 



[ Upstream commit e858faf556d4e14c750ba1e8852783c6f9520a0e ]

If an app is playing tricks to reuse a socket via tcp_disconnect(),
bytes_acked/received needs to be reset to 0. Otherwise tcp_info will
report the sum of the current and the old connection..

Cc: Eric Dumazet <edumazet@google.com>
Fixes: 0df48c26 ("tcp: add tcpi_bytes_acked to tcp_info")
Fixes: bdd1f9ed ("tcp: add tcpi_bytes_received to tcp_info")
Signed-off-by: default avatarChristoph Paasch <cpaasch@apple.com>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 227f0246

net/ipv4/tcp.c

+2 −0
Original line number Diff line number Diff line
@@ -2312,6 +2312,8 @@ int tcp_disconnect(struct sock *sk, int flags) 
	dst_release(sk->sk_rx_dst);

	sk->sk_rx_dst = NULL;

	tcp_saved_syn_free(tp);

	tp->bytes_acked = 0;

	tp->bytes_received = 0;



	WARN_ON(inet->inet_num && !icsk->icsk_bind_hash);