netdev - Re: BUG: sky2: hw csum failure with dual-port copper NIC on SMP

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] [day] [month] [year] [list]

Message-ID: <473B1626.20507@cybernetics.com>
Date:	Wed, 14 Nov 2007 10:37:10 -0500
From:	Tony Battersby <tonyb@...ernetics.com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	netdev@...r.kernel.org
Subject: Re: BUG: sky2: hw csum failure with dual-port copper NIC on SMP

>> Do you want the test program I am using? It is a pretty basic
>> send()/recv() program, ~650 lines of C.
>>
>> Tony
>>
>>     
>
> Not really, iperf drives the problem fine.
>
>   

Thanks for the tip; I hadn't tried iperf before today.  I can reproduce
the problem with "iperf -s" on the system with the dual-port SysKonnect
NIC and "iperf -c host -t 120" on the two Intel PRO/1000 (e1000 driver)
client systems.  The problem doesn't seem to happen the other way around
though (running the server on the two Intel PRO/1000 systems and two
iperf clients on the SysKonnect system).  So the problem appears to be
triggered by recv() on the SysKonnect side but not send().

Tony

-
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