From 5ea96f7856a38ab9a2554b7693bbcaed77376dbf Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Mon, 29 Jul 2019 21:47:46 +0800 Subject: [PATCH] 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 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 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- net/ipv4/tcp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index cc25c8cbe15a..b7ef367fe6a1 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2594,6 +2594,8 @@ int tcp_disconnect(struct sock *sk, int flags) tcp_saved_syn_free(tp); tp->compressed_ack = 0; tp->bytes_sent = 0; + tp->bytes_acked = 0; + tp->bytes_received = 0; tp->bytes_retrans = 0; tp->dsack_dups = 0; tp->reord_seen = 0; -- GitLab