[TCP]: Add TCP Vegas congestion control module.

TCP Vegas code modified for the new TCP infrastructure.
Vegas now uses microsecond resolution timestamps for
better estimation of performance over higher speed links.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 516ffe8..6c105b6 100644 (file)
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -488,6 +488,17 @@ config TCP_CONG_HYBLA
        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.
+
 endmenu
 
 source "net/ipv4/ipvs/Kconfig"

diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
index ede7a5d..a801a97 100644 (file)
--- a/net/ipv4/Makefile
+++ b/net/ipv4/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_TCP_CONG_BIC) += tcp_bic.o
 obj-$(CONFIG_TCP_CONG_WESTWOOD) += tcp_westwood.o
 obj-$(CONFIG_TCP_CONG_HSTCP) += tcp_highspeed.o
 obj-$(CONFIG_TCP_CONG_HYBLA) += tcp_hybla.o
+obj-$(CONFIG_TCP_CONG_VEGAS) += tcp_vegas.o
 
 obj-$(CONFIG_XFRM) += xfrm4_policy.o xfrm4_state.o xfrm4_input.o \
                      xfrm4_output.o

diff --cc net/ipv4/tcp_vegas.c
Simple merge