[PATCH] tcp_vegas_cong_avoid doc

[Stephen Hemminger <shemminger@xxxxxxxx>]

Patch to update sysctl documentation to include tcp_vegas.
Feel free to rewrite for better explanation.

diff -Nru a/Documentation/networking/ip-sysctl.txt 
b/Documentation/networking/ip-sysctl.txt
--- a/Documentation/networking/ip-sysctl.txt    Mon Apr 26 10:09:25 2004
+++ b/Documentation/networking/ip-sysctl.txt    Mon Apr 26 10:09:25 2004
@@ -307,6 +307,15 @@
        wired networks and throughput over wireless links.   
         Default: 0
 
+tcp_vegas_cong_avoid - BOOLEAN
+       Enable TCP Vegas congestion avoidance algorithm.
+       TCP Vegas is a sender-side only change to TCP that anticipates
+       the onset of congestion by estimating the bandwidth. TCP Vegas
+       adjusts the sending rate by modifying the congestion
+       window. TCP Vegas should provide less packet loss, but is not
+       be as aggressive as TCP Reno.
+       Default:0
+
 ip_local_port_range - 2 INTEGERS
        Defines the local port range that is used by TCP and UDP to
        choose the local port. The first number is the first, the