netdev - Re: [PATCH net-next-2.6] net: dummy: add auto

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Mon, 06 Dec 2010 12:36:46 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	opurdila@...acom.com
Cc:	netdev@...r.kernel.org, ddvlad@...edu.org,
	lucian.grijincu@...il.com
Subject: Re: [PATCH net-next-2.6] net: dummy: add auto_up module parameter

From: Octavian Purdila <opurdila@...acom.com>
Date: Tue, 30 Nov 2010 17:57:27 +0200

> Add auto_up module parameter to automatically bring up the created
> devices. This is useful when using the dummy driver for testing net
> device register / unregister performance.
> 
> Signed-off-by: Octavian Purdila <opurdila@...acom.com>

Registering a new netdevice with IFF_UP set is an error.  You can't
set IFF_UP without also doing all of the other work, callbacks, and
state changes which are made by dev_open()'s code paths.

If, as you say, your interests are in testing register/unregister
performance, you can do that by making the appropriate calls in a loop
from userspace.

I honestly don't see what you hope to gain with this change, and
anyways since the registration state is basically illegal you'll need
to find another way to do this.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html