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Date: Wed, 16 Jun 2004 15:28:50 GMT
From: Mike Cambria <mcc@fid4.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: tp->snd_wl1 & snd_wl2 are not updated in the header prediction cases
X-Send-Pr-Version: www-2.3

>Number:         68013
>Category:       kern
>Synopsis:       tp->snd_wl1 & snd_wl2 are not updated in the header prediction cases
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    jeff
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun 16 15:30:24 GMT 2004
>Closed-Date:    Sun May 13 04:28:25 GMT 2007
>Last-Modified:  Sun May 13 04:28:25 GMT 2007
>Originator:     Mike Cambria
>Release:        4.8 stable
>Organization:
>Environment:
FreeBSD mcambria.fid4.com 4.8-STABLE FreeBSD 4.8-STABLE #0: Fri Dec 26 16:24:22 EST 2003     root@mcambria:/usr/obj/usr/src/sys/OPTI11  i386      
>Description:
In tcp_input.c, if we process enough data in the header prediction code -- where the step 6 never executes, and then somehow reach step 6.  snd_wnd collapses and tcp_output stops sending.  



>How-To-Repeat:
Transfer a very large file that stays in "steady state" so as to execute header prediction for a 2+ GB transfer.  Then cause header prediction to exit (e.g. pull the cable on the receiving node briefly.)
>Fix:
I believe that snd_wl1 & snd_wl2 need to be updated in the header prediction cases as well.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->patched 
State-Changed-By: yar 
State-Changed-When: Wed Aug 11 10:17:29 GMT 2004 
State-Changed-Why:  
This problem is believed to have been fixed in CURRENT 
(tcp_input.c rev. 1.180). 


Responsible-Changed-From-To: freebsd-bugs->jeff 
Responsible-Changed-By: yar 
Responsible-Changed-When: Wed Aug 11 10:17:29 GMT 2004 
Responsible-Changed-Why:  
Over to the developer who fixed this problem in CURRENT 
quite a while ago. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=68013 

From: Matteo Riondato <rionda@gufi.org>
To: Gnats PR Database <freebsd-gnats-submit@freebsd.org>
Cc: jeff@freebsd.org
Subject: Re: kern/68013 tp->snd_wl1 & snd_wl2 are not updated in the header prediction cases
Date: Sat, 9 Apr 2005 08:20:21 +0200

 --+9kyDs7IugQ0lHaC
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 This was patched long time ago, but was never merged to RELENG_4 and
 I don't know if it can still be.
 If it cannot, this PR can be closed.
 Thank you.
 Best Regards
 --=20
 Rionda aka Matteo Riondato
 Disinformato per default
 G.U.F.I. Staff Member (http://www.gufi.org)
 FreeSBIE Developer (http://www.freesbie.org)
 
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From: Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>
To: bug-followup@FreeBSD.org, mcc@fid4.com
Cc:  
Subject: Re: kern/68013: tp->snd_wl1 & snd_wl2 are not updated in the
	header prediction cases
Date: Wed, 09 May 2007 18:42:50 +0100

 This was fixed in -HEAD before 5.0 was branched, and is therefore in all
 supported releases.  As 4.x is now EoL, this PR should be closed.
State-Changed-From-To: patched->closed 
State-Changed-By: linimon 
State-Changed-When: Sun May 13 04:28:02 UTC 2007 
State-Changed-Why:  
Fixed in all supported releases of FreeBSD. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=68013 
>Unformatted:
