linux-kernel - Re: nic enumeration

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Message-ID: <AANLkTik4JOoNFSoML98j8LPJhJjVpWd8om-OYMGp3s9V@mail.gmail.com>
Date:	Fri, 9 Jul 2010 10:10:58 -0700
From:	Steve Fink <sphink@...il.com>
To:	"Loke, Chetan" <Chetan.Loke@...scout.com>
Cc:	Florian Weimer <fweimer@....de>, linux-net@...r.kernel.org,
	Matt Domsch <Matt_Domsch@...l.com>,
	Michael Di Domenico <mdidomenico4@...il.com>,
	linux-kernel@...r.kernel.org, kay.sievers@...y.org
Subject: Re: nic enumeration

On Fri, Jul 9, 2010 at 9:27 AM, Loke, Chetan <Chetan.Loke@...scout.com> wrote:
> Ok, no renaming, I would like a reference. And symlink just doesn't work
> w/ the udevadm trigger business. We've tried that already.
>
> What needs to be changed in udev etc to create a soft link? Any place
> where I should start digging and gotchas to lookout for?

By "soft link", I assume you're talking figuratively? Soft (symbolic)
links are a filesystem concept, implemented by filesystem-specific
logic that knows how to read a filename out of an inode and restart
lookup. In order for something similar to work for network devices,
somebody would have had to explicitly implement similar functionality.
(Symlinks are a big headache and source of security holes -- access
control, loops, pointing to nonexistent files, etc. -- so there's a
good reason to NOT have an equivalent for network devices.)

But perhaps there *is* an equivalent: what about (ab)using bridges?
Create a set of bridges and bind each one to a single NIC. You can
name the bridges whatever you want, and set up the mapping through
arbitrary logic.
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