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Date: Thu, 24 Aug 2006 23:38:40 +0400
From: Oleg Bulyzhin <oleg@freebsd.org>
To: Pyun YongHyeon <pyunyh@gmail.com>
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Cc: Michael Reifenberger <mike@Reifenberger.com>, freebsd-current@freebsd.org
Subject: Re: call for bge(4) testers
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On Thu, Aug 24, 2006 at 05:12:44AM +0400, Oleg Bulyzhin wrote:
> On Thu, Aug 24, 2006 at 10:07:46AM +0900, Pyun YongHyeon wrote:
> > 
> > I can't remember what caused this. Need more coffee. :-(
> > If my memory serve me right it's related with ioctls.
> > I guess you can easily experiment with removing MTX_RECURSE flag
> > in the driver.
> 
> I'll try tomorrow (oh, today), have to sleep a bit. :)

I've used  bge(4) today with WITNESS enabled. Yes, i've got panic about
'recursion on non-recursive mutex' when i tried to issue 'ifconfig bge0 up'
command.
Though it was easy to fix it. (look at if_bge.c rev. 1.140).

bge(4) is somewhat special cause it can handle TBI cards.
(it is using bge_ifmedia_upd() inside bge_init_locked, thus i've added
bge_ifmedia_upd_locked() in order to avoid mutex recursion).

vge(4) (which is copper only, i.e. pure miibus(4) driver) is using 
mii_mediachg() inside vge_init(), so ifmedia callbacks can be locked 'as is'.

Am i mistaken somewhere?

-- 
Oleg.