From: Kumar Gala <galak@kernel.crashing.org>
To: Scott Coulter <scott.coulter@cyclone.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Gianfar tx-babbling-errors
Date: Wed, 18 Feb 2009 11:29:03 -0600 [thread overview]
Message-ID: <6BBF4AB4-FFB0-46ED-B591-17DEC3BE547F@kernel.crashing.org> (raw)
In-Reply-To: <43EB80E07C42E1408726E4905FB96B04C076B1@CYBORG3.cyclone.com>
On Feb 18, 2009, at 11:22 AM, Scott Coulter wrote:
> Kumar,
>
>> I'm told this will occur when:
>
>> Transmitted frame > MAXFRM and MACCFG2[Huge En] = 0.
>
> In the driver it looks like the MACCFG2_HUGEFRAME only gets set if the
> mtu > DEFAULT_RX_BUFFER_SIZE (1536 in my kernel). It appears as
> though
> the mtu is set to 1500. Under what conditions would the driver
> attempt
> to send a frame larger than the mtu?
can't think of any. How about adding a BUG_ON() in the tx path to see
if the buffer size > MTU and re-run your tests.
- k
next prev parent reply other threads:[~2009-02-18 17:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-18 16:16 Gianfar tx-babbling-errors Scott Coulter
2009-02-18 17:03 ` Kumar Gala
2009-02-18 17:22 ` Scott Coulter
2009-02-18 17:29 ` Kumar Gala [this message]
2009-02-18 20:45 ` Scott Coulter
2009-02-19 16:17 ` Scott Coulter
2009-02-19 16:29 ` Kumar Gala
2009-02-19 16:38 ` Scott Coulter
2009-02-19 16:48 ` sjoyeau
2009-02-19 17:03 ` Kumar Gala
2009-02-19 17:29 ` Scott Coulter
2009-02-20 19:16 ` Haruki Dai-R35557
2009-02-20 20:59 ` Scott Coulter
2009-02-20 21:32 ` Haruki Dai-R35557
2009-02-24 16:58 ` Scott Coulter
2009-03-03 16:33 ` Scott Coulter
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