kern/177400: jme(4): JMC25x 1000baseT establishment issues

[Lawrence Chen]

>Number:         177400
>Category:       kern
>Synopsis:       jme(4): JMC25x 1000baseT establishment issues
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 26 20:30:01 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Lawrence Chen
>Release:        FreeBSD 9.1-RELEASE amd64
>Organization:
>Environment:
System: FreeBSD dbox.lhaven.homeip.net 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec  4 09:23:10 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

FreeBSD cbox.lhaven.homeip.net 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec  4 09:23:10 UTC 2012     root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

Both machines are Shuttle XS36V.

	
>Description:
	Possible fix for known 1000baseT link establishment issues with JMC25x
>How-To-Repeat:
	Reboot system connected to a green 'gigabit' ethernet switch,
	sometimes it acts like there's no link ever, other times there'll be
	some connectivity eventually after a while.
>Fix:

	Not sure, but from what I found in Internet searches, suggesting
	that a patch to the LInux driver addresses this defect.

	http://thefrozenfire.com/2011/09/jmicron-jmc250-gigabit-nic-speed-issue-in-linux/

	http://thread.gmane.org/gmane.linux.network/211814
>Release-Note:
>Audit-Trail:
>Unformatted: