tcp: implement RFC 5961 3.2

[pandora-kernel.git] / Documentation / networking / ip-sysctl.txt

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index a4399f5..3b979c6 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -524,6 +524,11 @@ tcp_thin_dupack - BOOLEAN
        Documentation/networking/tcp-thin.txt
        Default: 0
 
+tcp_challenge_ack_limit - INTEGER
+       Limits number of Challenge ACK sent per second, as recommended
+       in RFC 5961 (Improving TCP's Robustness to Blind In-Window Attacks)
+       Default: 100
+
 UDP variables:
 
 udp_mem - vector of 3 INTEGERs: min, pressure, max