netdev - Re: Converting network devices from class devices causes namespace pollution

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]

Message-ID: <m1y7mu7e4w.fsf@ebiederm.dsl.xmission.com>
Date:	Mon, 19 Feb 2007 01:19:59 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Greg KH <gregkh@...e.de>
Cc:	netdev@...r.kernel.org
Subject: Re: Converting network devices from class devices causes namespace pollution

Greg KH <gregkh@...e.de> writes:

> We need our own namespace for these devices, and we have it today
> already.  Look if you enable CONFIG_SYSFS_DEPRECATED, or on a pre-2.6.19
> machine at what shows up in the pci device directories:
> -r--r--r--  1 root root  4096 2007-02-18 13:06 vendor

Interesting.  I hadn't noticed that before.

> So, all we need to do is rename these devices back to the "net:eth0"
> name, and everything will be fine.  I'll work on fixing that tomorrow as
> it will take a bit of hacking on the kobject symlink function and the
> driver core code (but it gets us rid of a symlink in "compatiblity
> mode", which is always a nice win...)

Ok.  I'm groaning a little bit at what a nuisance this is going to be
to get support for multiple network namespaces in there after your fix
goes in, directories can be easier to deal with.  But once you figure this
part out I will figure something out.

For me the nasty case is 1 pci device that has multiple ethernet devices
coming from it (I think IB devices have this property today), each
showing up in a different network namespace, so they might all have
the same name. Ugh.

Eric
-
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