From: Andrew Morton <akpm@linux-foundation.org>
To: netdev@vger.kernel.org
Cc: bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org, aldursys@gmail.com
Subject: Re: [Bugme-new] [Bug 13830] New: 8139too - packets dropped/lost by ethernet stack
Date: Tue, 28 Jul 2009 15:26:38 -0700 [thread overview]
Message-ID: <20090728152638.eea18607.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-13830-10286@http.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
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On Sun, 26 Jul 2009 10:32:52 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=13830
>
> Summary: 8139too - packets dropped/lost by ethernet stack
> Product: Drivers
> Version: 2.5
> Kernel Version: 2.6.28, 2.6.31
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Network
> AssignedTo: drivers_network@kernel-bugs.osdl.org
> ReportedBy: aldursys@gmail.com
> Regression: No
>
>
> I'm losing receive packets with the 8139too REALTEK driver when I place the
> driver under load.
>
> Details:
>
> distribution: Ubuntu Jaunty 9.04, Ubuntu Karmic Alpha-3.
>
> eth0 Link encap:Ethernet HWaddr 00:1b:38:08:7f:d3
> inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0
> inet6 addr: fe80::21b:38ff:fe08:7fd3/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:9164 errors:94 dropped:94 overruns:94 frame:0
> TX packets:7497 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:12058463 (12.0 MB) TX bytes:792762 (792.7 KB)
> Interrupt:21 Base address:0x2000
>
> Dmesg details
>
> [ 4.357046] 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
> [ 4.357092] 8139cp 0000:05:01.0: This (id 10ec:8139 rev 10) is not an 8139C+
> compatible chip, use 8139too
> [ 4.359452] 8139too Fast Ethernet driver 0.9.28
> [ 4.359513] 8139too 0000:05:01.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
> [ 4.359527] 8139too 0000:05:01.0: setting latency timer to 64
> [ 4.360886] eth0: RealTek RTL8139 at 0x2000, 00:1b:38:08:7f:d3, IRQ 21
> [ 4.360889] eth0: Identified 8139 chip type 'RTL-8100B/8139D'
>
>
> The problem appears to goes away if I enable just the debug message at the end
> of the function in the interrupt handler (rtl8139_interrupt) which sort of
> suggests that something is coming into the driver faster than it can handle or
> it is missing a state somewhere.
>
> (I get much better throughput with the debug message on than without it).
>
> Also none of the error counters appear to be incremented by the driver itself -
> suggesting again that the higher level is expecting something the driver isn't
> providing.
>
> Bug 10682 may be related (http://bugzilla.kernel.org/show_bug.cgi?id=10682) but
> isn't exactly the same.
>
> More details at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/401891
parent reply other threads:[~2009-07-28 22:27 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <bug-13830-10286@http.bugzilla.kernel.org/>]
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