tcp: refactor F-RTO

[cascardo/linux.git] / Documentation / networking / ip-sysctl.txt

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 17953e2..8a977a0 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -239,23 +239,6 @@ tcp_frto - INTEGER
        interacts badly with the packet counting of the SACK enabled TCP
        flow.
 
-tcp_frto_response - INTEGER
-       When F-RTO has detected that a TCP retransmission timeout was
-       spurious (i.e, the timeout would have been avoided had TCP set a
-       longer retransmission timeout), TCP has several options what to do
-       next. Possible values are:
-               0 Rate halving based; a smooth and conservative response,
-                 results in halved cwnd and ssthresh after one RTT
-               1 Very conservative response; not recommended because even
-                 though being valid, it interacts poorly with the rest of
-                 Linux TCP, halves cwnd and ssthresh immediately
-               2 Aggressive response; undoes congestion control measures
-                 that are now known to be unnecessary (ignoring the
-                 possibility of a lost retransmission that would require
-                 TCP to be more cautious), cwnd and ssthresh are restored
-                 to the values prior timeout
-       Default: 0 (rate halving based)
-
 tcp_keepalive_time - INTEGER
        How often TCP sends out keepalive messages when keepalive is enabled.
        Default: 2hours.