From: Eric Dumazet <edumazet@google.com>
Date: Thu, 17 Jan 2019 19:23:35 +0000 (-0800)
Subject: tcp: do not clear srtt_us in tcp_create_openreq_child
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a0070e463f3fb303b64dea60fe2b0a2e60fce61c;p=openwrt%2Fstaging%2Fblogic.git

tcp: do not clear srtt_us in tcp_create_openreq_child

All listeners have this field cleared already, since tcp_disconnect()
clears it and newly created sockets have also a zero value here.

So a clone will inherit a zero value here.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 830e4eb558f8..977ad1c0ccca 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -479,7 +479,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
 
 	tcp_init_wl(newtp, treq->rcv_isn);
 
-	newtp->srtt_us = 0;
 	newtp->mdev_us = jiffies_to_usecs(TCP_TIMEOUT_INIT);
 	minmax_reset(&newtp->rtt_min, tcp_jiffies32, ~0U);
 	newicsk->icsk_ack.lrcvtime = tcp_jiffies32;