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Date:      Tue, 28 Nov 2006 11:41:45 -0800
From:      Sam Leffler <sam@errno.com>
To:        Robert Watson <rwatson@freebsd.org>
Cc:        Munehiro Matsuda <haro@h4.dion.ne.jp>, freebsd-current@freebsd.org
Subject:   Re: LOR with netisr changes
Message-ID:  <456C90F9.5080209@errno.com>
In-Reply-To: <20061128180811.P95096@fledge.watson.org>
References:  <20061129.015826.74756053.haro@h4.dion.ne.jp> <20061128180811.P95096@fledge.watson.org>

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Robert Watson wrote:
> 
> On Wed, 29 Nov 2006, Munehiro Matsuda wrote:
> 
>> JFYI, I got following LOR started after the netisr changes:
> 
> In general, device driver locks should not be held over entry to the
> network stack.  However, things get a bit tricky in the 802.11 code due
> to lock sharing, I believe, so it could be a bit more tricky to fix that.

It's just a bug in the driver.  Driver locks should be dropped when
packets get passed up the stack.  This issue was pointed out before iwi
ever was committed but since nothing immediately comes back via the
bridge (or similar) it's been ignored.

	Sam



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