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.
+
endmenu
source "net/ipv4/ipvs/Kconfig"