X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fnetworking%2Fip-sysctl.txt;h=d3d653a5f9b923be1ab518cba040e9ccb3868f3e;hb=497ff0344432d1c4ab493ce163a87410064b8d91;hp=d99940dcfc442c7a3ae5e209c0eef4af99d3d876;hpb=695884fb8acd9857e0e7120ccb2150e30f4b8fef;p=pandora-kernel.git

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index d99940dcfc44..d3d653a5f9b9 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -187,7 +187,7 @@ tcp_cookie_size - INTEGER
 tcp_dsack - BOOLEAN
 	Allows TCP to send "duplicate" SACKs.
 
-tcp_ecn - BOOLEAN
+tcp_ecn - INTEGER
 	Enable Explicit Congestion Notification (ECN) in TCP. ECN is only
 	used when both ends of the TCP flow support it. It is useful to
 	avoid losses due to congestion (when the bottleneck router supports
@@ -280,6 +280,17 @@ tcp_max_orphans - INTEGER
 	more aggressively. Let me to remind again: each orphan eats
 	up to ~64K of unswappable memory.
 
+tcp_max_ssthresh - INTEGER
+	Limited Slow-Start for TCP with large congestion windows (cwnd) defined in
+	RFC3742. Limited slow-start is a mechanism to limit growth of the cwnd
+	on the region where cwnd is larger than tcp_max_ssthresh. TCP increases cwnd
+	by at most tcp_max_ssthresh segments, and by at least tcp_max_ssthresh/2
+	segments per RTT when the cwnd is above tcp_max_ssthresh.
+	If TCP connection increased cwnd to thousands (or tens of thousands) segments,
+	and thousands of packets were being dropped during slow-start, you can set
+	tcp_max_ssthresh to improve performance for new TCP connection.
+	Default: 0 (off)
+
 tcp_max_syn_backlog - INTEGER
 	Maximal number of remembered connection requests, which are
 	still did not receive an acknowledgment from connecting client.