diff options
Diffstat (limited to 'net/ipv4/Kconfig')
| -rw-r--r-- | net/ipv4/Kconfig | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 84f710b7472a..69fb37854449 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -570,6 +570,27 @@ config TCP_CONG_ILLINOIS For further details see: http://www.ews.uiuc.edu/~shaoliu/tcpillinois/index.html +config TCP_CONG_DCTCP + tristate "DataCenter TCP (DCTCP)" + default n + ---help--- + DCTCP leverages Explicit Congestion Notification (ECN) in the network to + provide multi-bit feedback to the end hosts. It is designed to provide: + + - High burst tolerance (incast due to partition/aggregate), + - Low latency (short flows, queries), + - High throughput (continuous data updates, large file transfers) with + commodity, shallow-buffered switches. + + All switches in the data center network running DCTCP must support + ECN marking and be configured for marking when reaching defined switch + buffer thresholds. The default ECN marking threshold heuristic for + DCTCP on switches is 20 packets (30KB) at 1Gbps, and 65 packets + (~100KB) at 10Gbps, but might need further careful tweaking. + + For further details see: + http://simula.stanford.edu/~alizade/Site/DCTCP_files/dctcp-final.pdf + choice prompt "Default TCP congestion control" default DEFAULT_CUBIC @@ -598,9 +619,11 @@ choice config DEFAULT_WESTWOOD bool "Westwood" if TCP_CONG_WESTWOOD=y + config DEFAULT_DCTCP + bool "DCTCP" if TCP_CONG_DCTCP=y + config DEFAULT_RENO bool "Reno" - endchoice endif @@ -620,6 +643,7 @@ config DEFAULT_TCP_CONG default "westwood" if DEFAULT_WESTWOOD default "veno" if DEFAULT_VENO default "reno" if DEFAULT_RENO + default "dctcp" if DEFAULT_DCTCP default "cubic" config TCP_MD5SIG |