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 9fa1e9a4c93213e984699d8c29180a1e0842925a..dd1599c1ccadd2ec8bb12192dce2d753fb548243 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2316,6 +2316,8 @@ int tcp_disconnect(struct sock *sk, int flags)
        tcp_saved_syn_free(tp);
        tp->bytes_acked = 0;
        tp->bytes_received = 0;
+       tp->data_segs_in = 0;
+       tp->data_segs_out = 0;
 
        WARN_ON(inet->inet_num && !icsk->icsk_bind_hash);