netdev - Re: [PATCH] [next-next-2.6] net: configurable device name hash

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: <20091111.183626.202530131.davem@davemloft.net>
Date:	Wed, 11 Nov 2009 18:36:26 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	opurdila@...acom.com
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH] [next-next-2.6] net: configurable device name hash

From: Octavian Purdila <opurdila@...acom.com>
Date: Wed, 11 Nov 2009 23:47:41 +0200

> We could use a similar function that will work in the per namespace
> initialization context, but this might upset net namespace folks
> since we will get a large hash for every namespace.

Use kzalloc(), that's sufficient for a 64K or so hash table which is
way more than you ever will need.

Use the GFP_* flags that will silently (ie. without a log message)
fail, and divide by two until you successfully allocate the table if
you're worried about memory fragmentation at allocation time.

This is so straightforward, I can't believe we're talking so much
about how to implement this, it's a 15 minute hack :-)
--
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