linux-kernel - Re: why network devices don't do reference counting? (Re: [PATCH] Module use count must be updated as bridges are created/destroyed)

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

Message-ID: <Pine.LNX.4.64.0709270017120.17414@fbirervta.pbzchgretzou.qr>
Date:	Thu, 27 Sep 2007 00:18:55 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
cc:	Oleg Verych <olecom@...wer.upol.cz>,
	Jan Beulich <jbeulich@...ell.com>,
	bridge@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: why network devices don't do reference counting? (Re: [PATCH]
 Module use count must be updated as bridges are created/destroyed)


On Sep 26 2007 14:06, Stephen Hemminger wrote:
>> >
>> > No, network devices don't do reference counting.
>> 
>> Could you explain why, please?
>> 
>> After `udevd` on boot loads lots of unused crap, i surrendered, and use
>> $(rmmod `lsmod | just first column`). Networing bravely wipes away. OK,
>> there are lots of configs: udev, hotplug, modprobe, that somebody might
>> like to fix. But it came to the end with me. I just don't care. So,
>> please answer :)
>
>For hotplug and other reasons, the network developers decided that being
>able to remove a network module at any time was a good thing. It works.

Except that for ipv6.ko, it's all opposite. After modprobe,
it already got a refcount like 8 and you're wondering how
to get rid of that.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/