This is a note to let you know that I've just added the patch titled

tcp: fix under-evaluated ssthresh in TCP Vegas

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: tcp-fix-under-evaluated-ssthresh-in-tcp-vegas.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Wed Dec 20 18:17:52 CET 2017

From: Hoang Tran tranviethoang.vn@gmail.com Date: Wed, 27 Sep 2017 18:30:58 +0200 Subject: tcp: fix under-evaluated ssthresh in TCP Vegas

From: Hoang Tran tranviethoang.vn@gmail.com

[ Upstream commit cf5d74b85ef40c202c76d90959db4d850f301b95 ]

With the commit 76174004a0f19785 (tcp: do not slow start when cwnd equals ssthresh), the comparison to the reduced cwnd in tcp_vegas_ssthresh() would under-evaluate the ssthresh.

Signed-off-by: Hoang Tran hoang.tran@uclouvain.be Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv4/tcp_vegas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/tcp_vegas.c +++ b/net/ipv4/tcp_vegas.c @@ -158,7 +158,7 @@ EXPORT_SYMBOL_GPL(tcp_vegas_cwnd_event);

static inline u32 tcp_vegas_ssthresh(struct tcp_sock *tp) { - return min(tp->snd_ssthresh, tp->snd_cwnd-1); + return min(tp->snd_ssthresh, tp->snd_cwnd); }

static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 acked)

Patches currently in stable-queue which might be from tranviethoang.vn@gmail.com are

queue-4.14/tcp-fix-under-evaluated-ssthresh-in-tcp-vegas.patch