upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-04-15 14:29:58 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
224508 commits 29 branches 224 tags 2.1 GiB
Commit graph

9 commits

Author SHA1 Message Date
Hiren Panchasara
e04310d59b Set slow start threshold more accurately on loss to be flightsize/2 instead of 
cwnd/2 as recommended by RFC5681. (spotted by mmacy at nextbsd dot org)

Restore pre-r307901 behavior of aligning ssthresh/cwnd on mss boundary. (spotted
by slawa at zxy dot spb dot ru)

Tested by:	    dim, Slawa <slawa at zxy dot spb dot ru>
MFC after:	    1 month
X-MFC with:	    r307901
Sponsored by:	    Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D8349
 2016-11-01 21:08:37 +00:00
Hiren Panchasara
4e7f755377 FreeBSD tcp stack used to inform respective congestion control module about the 
loss event but not use or obay the recommendations i.e. values set by it in some
cases.

Here is an attempt to solve that confusion by following relevant RFCs/drafts.
Stack only sets congestion window/slow start threshold values when there is no
CC module availalbe to take that action. All CC modules are inspected and
updated when needed to take appropriate action on loss.

tcp_stacks/fastpath module has been updated to adapt these changes.

Note: Probably, the most significant change would be to not bring congestion
window down to 1MSS on a loss signaled by 3-duplicate acks and letting
respective CC decide that value.

In collaboration with:	Matt Macy <mmacy at nextbsd dot org>
Discussed on:		transport@ mailing list
Reviewed by:		jtl
MFC after:		1 month
Sponsored by:		Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D8225
 2016-10-25 05:45:47 +00:00
Hiren Panchasara
dd13b7d387 Undo r307899. It needs a bit more work and proper commit log. 2016-10-25 05:07:51 +00:00
Hiren Panchasara
95d8236011 In Collaboration with: Matt Macy <mmacy at nextbsd dot com> 
Reviewed by:		    jtl
Sponsored by:		    Limelight Networks
Differential Revision:	    https://reviews.freebsd.org/D8225
 2016-10-25 05:03:33 +00:00
Pedro F. Giffuni
a4641f4eaa sys/net*: minor spelling fixes. 
No functional change.
 2016-05-03 18:05:43 +00:00
Gleb Smirnoff
4644fda3f7 Rename netinet/tcp_cc.h to netinet/cc/cc.h. 
Discussed with:	lstewart
 2016-01-27 17:59:39 +00:00
Gleb Smirnoff
2de3e790f5 - Rename cc.h to more meaningful tcp_cc.h. 
- Declare it a kernel only include, which it already is.
- Don't include tcp.h implicitly from tcp_cc.h
 2016-01-21 22:34:51 +00:00
Gleb Smirnoff
b66d74c138 Cleanup TCP files from unnecessary interface related includes. 2016-01-21 22:24:20 +00:00
Hiren Panchasara
64807b300f 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@sfc.wide.ad.jp> and
		Lars Eggert <lars@netapp.com>
		with help and modifications from
		hiren
Differential Revision:	https://reviews.freebsd.org/D604
Reviewed by:	gnn
 2015-01-12 08:33:04 +00:00