netdev - RE: [RFC PATCH] netlink: Increase netlink dump skb message size

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]

Date:	Tue, 26 Apr 2011 14:58:57 -0700
From:	"Rose, Gregory V" <gregory.v.rose@...el.com>
To:	Ben Hutchings <bhutchings@...arflare.com>,
	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [RFC PATCH] netlink: Increase netlink dump skb message size

> -----Original Message-----
> From: Ben Hutchings [mailto:bhutchings@...arflare.com]
> Sent: Tuesday, April 26, 2011 12:07 PM
> To: Rose, Gregory V; Eric Dumazet
> Cc: David Miller; netdev@...r.kernel.org
> Subject: RE: [RFC PATCH] netlink: Increase netlink dump skb message size
> 
> On Tue, 2011-04-26 at 09:24 -0700, Rose, Gregory V wrote:
> > > -----Original Message-----
> > > From: Eric Dumazet [mailto:eric.dumazet@...il.com]
> > > Sent: Tuesday, April 26, 2011 9:21 AM
> > > To: Rose, Gregory V
> > > Cc: David Miller; netdev@...r.kernel.org; bhutchings@...arflare.com
> > > Subject: RE: [RFC PATCH] netlink: Increase netlink dump skb message
> size
> > >
> > > Le mardi 26 avril 2011 à 09:12 -0700, Rose, Gregory V a écrit :
> > >
> > > > I'm fine with however you folks want to approach this, just give me
> some
> > > direction.
> > >
> > > I would just try following patch :
> >
> > I'll test it out, it's certainly a lot simpler.  Perhaps I was getting a
> bit too fancy.
> >
> > Ben would want to make sure it works for 127 VFs, my device does 63.
> 
> I haven't been working on SR-IOV myself so I'll pass this on to a
> colleague.  Thanks, Eric.

Eric's patch works fine for the case of 63 VFs.  For most dumps it's allocating quite a bit more memory than necessary but that's not a big issue since it's transient and not held for long.

- Greg