netdev - Re: NIU driver: Sun x8 Express Quad Gigabit Ethernet Adapter

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:	Wed, 12 Nov 2008 22:31:43 +0100 (CET)
From:	Jesper Dangaard Brouer <hawk@...u.dk>
To:	netdev <netdev@...r.kernel.org>, linux-kernel@...r.kernel.org
Subject: Re: NIU driver: Sun x8 Express Quad Gigabit Ethernet Adapter


Hi Google,

On Wed, 12 Nov 2008, David Miller wrote:

> Guess what that does?  The packet counters live in the upper
> 32-bits and the MARK bits live in the lower 32-bits of the
> TX_CS register.
>
> So it first reads the packet counters, and as a side effect that
> clears the MARK bits in the TX_CS register.  So when we read the lower
> 32-bits the MARK bits are always seen as zero.

For the thorough reader, the TX_CS Transmit Control and Status register is 
described in table 26-15 page 761-762 in the PDF document titled: 
"UltraSPARC T2 supplement to UltraSPARC architecture 2007", downloadable 
from: 
http://opensparc-t2.sunsource.net/specs/UST2-UASuppl-current-draft-HP-EXT.pdf

Cheers,
   Jesper Brouer

--
-------------------------------------------------------------------
MSc. Master of Computer Science
Dept. of Computer Science, University of Copenhagen
Author of http://www.adsl-optimizer.dk
-------------------------------------------------------------------
--
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