From: Christoph Paasch cpaasch@apple.com
[ 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: 0df48c26d841 ("tcp: add tcpi_bytes_acked to tcp_info") Fixes: bdd1f9edacb5 ("tcp: add tcpi_bytes_received to tcp_info") Signed-off-by: Christoph Paasch cpaasch@apple.com Signed-off-by: Eric Dumazet edumazet@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/tcp.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2312,6 +2312,8 @@ int tcp_disconnect(struct sock *sk, int 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);