[TCP]: Add Scalable TCP congestion control module.

[~andy/linux] / net / ipv4 / Kconfig

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 05107e0dc1450ec8f45d28f1320620c06cde17ca..690e88ba24846296c8c957da52ca5966bf142584 100644 (file)
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -2,7 +2,7 @@
 # IP configuration
 #
 choice 
-       prompt "Choose IP: FIB lookup""
+       prompt "Choose IP: FIB lookup"
        depends on INET
        default IP_FIB_HASH
 
@@ -433,5 +433,95 @@ config IP_TCPDIAG
 config IP_TCPDIAG_IPV6
        def_bool (IP_TCPDIAG=y && IPV6=y) || (IP_TCPDIAG=m && IPV6)
 
+# TCP Reno is builtin (required as fallback)
+menu "TCP congestion control"
+       depends on INET
+
+config TCP_CONG_BIC
+       tristate "Binary Increase Congestion (BIC) control"
+       depends on INET
+       default y
+       ---help---
+       BIC-TCP is a sender-side only change that ensures a linear RTT
+       fairness under large windows while offering both scalability and
+       bounded TCP-friendliness. The protocol combines two schemes
+       called additive increase and binary search increase. When the
+       congestion window is large, additive increase with a large
+       increment ensures linear RTT fairness as well as good
+       scalability. Under small congestion windows, binary search
+       increase provides TCP friendliness.
+       See http://www.csc.ncsu.edu/faculty/rhee/export/bitcp/
+
+config TCP_CONG_WESTWOOD
+       tristate "TCP Westwood+"
+       depends on INET
+       default m
+       ---help---
+       TCP Westwood+ is a sender-side only modification of the TCP Reno
+       protocol stack that optimizes the performance of TCP congestion
+       control. It is based on end-to-end bandwidth estimation to set
+       congestion window and slow start threshold after a congestion
+       episode. Using this estimation, TCP Westwood+ adaptively sets a
+       slow start threshold and a congestion window which takes into
+       account the bandwidth used  at the time congestion is experienced.
+       TCP Westwood+ significantly increases fairness wrt TCP Reno in
+       wired networks and throughput over wireless links.
+
+config TCP_CONG_HTCP
+        tristate "H-TCP"
+       depends on INET
+        default m
+       ---help---
+       H-TCP is a send-side only modifications of the TCP Reno
+       protocol stack that optimizes the performance of TCP
+       congestion control for high speed network links. It uses a
+       modeswitch to change the alpha and beta parameters of TCP Reno
+       based on network conditions and in a way so as to be fair with
+       other Reno and H-TCP flows.
+
+config TCP_CONG_HSTCP
+       tristate "High Speed TCP"
+       depends on INET && EXPERIMENTAL
+       default n
+       ---help---
+       Sally Floyd's High Speed TCP (RFC 3649) congestion control.
+       A modification to TCP's congestion control mechanism for use
+       with large congestion windows. A table indicates how much to
+       increase the congestion window by when an ACK is received.
+       For more detail see http://www.icir.org/floyd/hstcp.html
+
+config TCP_CONG_HYBLA
+       tristate "TCP-Hybla congestion control algorithm"
+       depends on INET && EXPERIMENTAL
+       default n
+       ---help---
+       TCP-Hybla is a sender-side only change that eliminates penalization of
+       long-RTT, large-bandwidth connections, like when satellite legs are
+       involved, expecially when sharing a common bottleneck with normal
+       terrestrial connections.
+
+config TCP_CONG_VEGAS
+       tristate "TCP Vegas"
+       depends on INET && EXPERIMENTAL
+       default n
+       ---help---
+       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 it is
+       not as aggressive as TCP Reno.
+
+config TCP_CONG_SCALABLE
+       tristate "Scalable TCP"
+       depends on INET && EXPERIMENTAL
+       default n
+       ---help---
+       Scalable TCP is a sender-side only change to TCP which uses a
+       MIMD congestion control algorithm which has some nice scaling
+       properties, though is known to have fairness issues.
+       See http://www-lce.eng.cam.ac.uk/~ctk21/scalable/
+
+endmenu
+
 source "net/ipv4/ipvs/Kconfig"