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From: Marcel Holtmann <marcel@holtmann.org>
To: Adar Dembo <adar@vmware.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	"Gregory A. Smith" <gasmith@vmware.com>
Subject: Re: Wireless netlink events delivered out-of-order
Date: Mon, 30 Aug 2010 20:15:23 -0400	[thread overview]
Message-ID: <1283213723.6841.109.camel@localhost.localdomain> (raw)
In-Reply-To: <6E637B430FD37A4AB921E6D15291BCAB02485032FA@EXCH-MBX-4.vmware.com>

Hi Adar,

> I asked this question on the linux-wireless IRC channel last week but I don't think anyone was around at the time, so here it is over e-mail.
> 
> We have a userlevel application that uses a netlink socket to figure out when networking interfaces on the system go up or down. It does so by looking at all RTM_NEWLINK messages that arrive on the socket and examining their ifi_flags fields. We interpret the presence of both IFF_UP and IFF_RUNNING to mean that an interface has gone up, while the lack thereof to mean that an interface is down.

I would look for IFF_LOWER_UP actually. Using only IFF_RUNNING is a
pretty bad idea.

Regards

Marcel



      reply	other threads:[~2010-08-31  0:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-30 22:20 Wireless netlink events delivered out-of-order Adar Dembo
2010-08-31  0:15 ` Marcel Holtmann [this message]

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