From: hwg <hwg@rock-chips.com>
Date: Tue, 20 Aug 2013 02:27:57 +0000 (+0800)
Subject: set tcp_adv_win_scale back to 2 from 1:
X-Git-Tag: firefly_0821_release~6720
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70392e73cc761b508774814160d7daa6262574cd;p=firefly-linux-kernel-4.4.55.git

set tcp_adv_win_scale back to 2 from 1:
 solve GMS DRM network video download speed slow problem
---

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 7f4e391e4922..c266b31557c2 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -83,7 +83,7 @@ int sysctl_tcp_ecn __read_mostly = 2;
 EXPORT_SYMBOL(sysctl_tcp_ecn);
 int sysctl_tcp_dsack __read_mostly = 1;
 int sysctl_tcp_app_win __read_mostly = 31;
-int sysctl_tcp_adv_win_scale __read_mostly = 1;
+int sysctl_tcp_adv_win_scale __read_mostly = 2;
 EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);
 
 /* rfc5961 challenge ack rate limiting */