From: Eric Dumazet <eric.dumazet@gmail.com>
To: Chin Shi Hong <cshong87@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: ifreq flags or ioctl calls to turn an interface down?
Date: Thu, 12 May 2011 15:32:23 +0200 [thread overview]
Message-ID: <1305207143.3795.23.camel@edumazet-laptop> (raw)
In-Reply-To: <BANLkTim=DPqz+pS3DDHw=C4MGMJmu6t=GA@mail.gmail.com>
Le jeudi 12 mai 2011 à 21:27 +0800, Chin Shi Hong a écrit :
> Dear all,
>
> I am developing an application that will turn a network interface down
> (something like command "ifconfig <network interface> down".
>
> What are the ifreq flags or ioctl calls to turn a network interface down?
>
> Or is there any other way to implement this feature into my application?
Quick answer :
strace ifconfig eth2 down
...
socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
ioctl(4, SIOCGIFFLAGS, {ifr_name="eth2", ifr_flags=IFF_UP|IFF_BROADCAST|
IFF_RUNNING|IFF_MULTICAST}) = 0
ioctl(4, SIOCSIFFLAGS, {ifr_name="eth2", ifr_flags=IFF_BROADCAST|
IFF_RUNNING|IFF_MULTICAST}) = 0
prev parent reply other threads:[~2011-05-12 13:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 13:27 ifreq flags or ioctl calls to turn an interface down? Chin Shi Hong
2011-05-12 13:32 ` Eric Dumazet [this message]
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