From owner-freebsd-hackers  Wed May 24 11:43:50 2000
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To: Duncan Barclay <dmlb@ragnet.demon.co.uk>
Subject: Re: xxx_stop and ifq->if_snd in NIC drivers 
Cc: freebsd-hackers@FreeBSD.ORG
In-reply-to: Your message of "Tue, 23 May 2000 21:48:46 BST."
		<XFMail.000523214846.dmlb@computer.my.domain> 
References: <XFMail.000523214846.dmlb@computer.my.domain>  
Date: Wed, 24 May 2000 12:42:36 -0600
From: Warner Losh <imp@village.org>
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In message <XFMail.000523214846.dmlb@computer.my.domain> Duncan Barclay writes:
: In a wireless NIC driver should one drain the output queue when the interface is
: stopped? I've been perusing /sys/dev/awi.c and the output queue is drained in
: that driver.

It depends on how the interface is stopped.  If it is being stopped a
few milliseconds before it loses power, I don't think it would make
sense to drain anything...

If it is just ifconfig down, then it likely makes sense.

Warner


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