svn commit: r277054 - in head: share/man/man4 sys/modules/cc sys/modules/cc/cc_dctcp sys/netinet sys/netinet/cc

[Midori Kato]

Hi Pedro,

Thank you for your mention about the patent problem.
Thanks to Hiren and Lars support, we have already discuss patent with
microsoft people. But I am not sure that we must care about Linux because
we worked on our implementation without linux. Let's wait and see if redhat
people say about it.

Again, thank you for your interest to dctcp implementation :)

Regards,
-- Midori


2015-01-13 1:06 GMT+09:00 Pedro Giffuni <pfg at freebsd.org>:

>
> On 12/01/2015 03:33 a.m., Hiren Panchasara wrote:
>
>> Author: hiren
>> Date: Mon Jan 12 08:33:04 2015
>> New Revision: 277054
>> URL: https://svnweb.freebsd.org/changeset/base/277054
>>
>> Log:
>>    DCTCP (Data Center TCP) implementation.
>>       DCTCP congestion control algorithm aims to maximise throughput and
>> minimise
>>    latency in data center networks by utilising the proportion of Explicit
>>    Congestion Notification (ECN) marked packets received from capable
>> hardware as a
>>    congestion signal.
>>       Highlights:
>>    Implemented as a mod_cc(4) module.
>>    ECN (Explicit congestion notification) processing is done differently
>> from
>>    RFC3168.
>>    Takes one-sided DCTCP into consideration where only one of the sides
>> is using
>>    DCTCP and other is using standard ECN.
>>       IETF draft: http://tools.ietf.org/html/draft-bensley-tcpm-dctcp-00
>>    Thesis report by Midori Kato: https://eggert.org/students/
>> kato-thesis.pdf
>>       Submitted by:     Midori Kato <katoon at sfc.wide.ad.jp> and
>>                 Lars Eggert <lars at netapp.com>
>>                 with help and modifications from
>>                 hiren
>>    Differential Revision:       https://reviews.freebsd.org/D604
>>    Reviewed by: gnn
>>
>
> Missing
>
> RelNotes=    yes
>
> Huge thank you!
>
> FWIW, I thought the linux guys wouldn't take it over some GPL vs patent
> issue but apparently redhat pushed some muscle and just did it:
>
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=
> e3118e8359bb7c59555aca60c725106e6d78c5ce
>
> Not that I care much what they do ;).
>
> Pedro.
>
>