Re: link up and don on ether async notification

From: Stephen Hemminger
Date: Thu May 31 2007 - 17:05:22 EST

On Thu, 31 May 2007 22:56:13 +0200
mbartolo <mb4rt0l0@xxxxxxxxx> wrote:

> Hi boys,
> Is some mechanism which can I use to notify user space program
> asynochronously that link on my ethernet device is is down or up ? ( I can't
> use polling like ethtool - i think that control every second state of link on
> ethernet through some of ioctl is no good).

Use netlink to monitor the device. read source in iproute2/ip/ipmon.c to get
the general idea.

> Is good idea to use inotify on file /sys/class/net/eth0/carrier ?

Please NO

> thanks for suggestion

Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
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