netdev - Re: SO_TIMESTAMPING fix and design decisions

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: <20090920095242.5cd42f1a@pundit>
Date:	Sun, 20 Sep 2009 09:52:42 +0200
From:	Christopher Zimmermann <madroach@...web.de>
To:	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: SO_TIMESTAMPING fix and design decisions

On Sat, 19 Sep 2009 15:09:21 -0700
Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com> wrote:

> > hardware timestamps only work for the Intel igb driver. I have 
> > access to two test machines with NICs supported by this driver.
> 
> Intel's 82599, supported by ixgbe, also has the same IEEE 1588
> timestamping support in hardware.  We haven't implemented the support
> yet in ixgbe, but the hardware is there and does work.  If you were
> curious of the interface, the datasheet for the hardware is available on
> our SourceForge site (e1000.sf.net).

hi! thanks for the reply.

I already got the documentation for the 82576 cards I have access to. I 
won't be able to afford another pair.

What do you think about my idea to expose the relevant registers to 
userspace? I believe it would not be too difficult for userspace to 
configure the timestamps this way and would allow way more flexibility. 
Of course I would #DEFINE the constants used to set the registers.

Christopher Zimmermann

Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)