From: Robert Bradley <robert.bradley1@gmail.com>
To: cerowrt-devel@lists.bufferbloat.net
Subject: Re: [Cerowrt-devel] Raspberry Pi build
Date: Sat, 18 Aug 2012 19:07:38 +0100 [thread overview]
Message-ID: <502FD9EA.6070009@gmail.com> (raw)
In-Reply-To: <CAA93jw4KTYEOMTJP7AX6DdNUTiQrT+Kw8tbDf4CuR4CVtSAPkA@mail.gmail.com>
On 18/08/12 18:38, Dave Taht wrote:
> 2) I have no idea what wireless chip is in the pi, nor its current state. (?)
The Raspberry Pi has no built-in wireless chip, but using USB WiFi
adapters would be possible.
> 3) In order for things like fq_codel to have a hope of working well at
> the ethernet level, "Byte Queue Limits" (BQL) is *required*. I don't
> think any USB to ethernet adaptors have that yet, but I would welcome
> being wrong. And even if BQL worked over USB, we might have issues
> with the USB layer left to deal with... but BQL is easy to implement
> on native ethernet (6-8 lines of code or so)...
>
> I went looking through the source trees briefly and didn't find
> anything that jumped out at me. If you can point me to the right
> drivers I'll take a look. (and/or ask question 3 on a rasperry pi list
> for us?)
>
I did a bit of digging, and the Raspberry Pi uses the SMSC LAN9512 chip
for wired Ethernet
(http://www.smsc.com/media/Downloads_Public/Data_Sheets/9512.pdf). The
smsc95xx driver currently lacks BQL support, so that would need to be
added first.
--
Robert Bradley
next prev parent reply other threads:[~2012-08-18 18:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-18 6:01 Mark Constable
2012-08-18 17:38 ` Dave Taht
2012-08-18 18:07 ` Robert Bradley [this message]
2012-08-18 18:53 ` Dave Taht
2012-08-19 0:59 ` Robert Bradley
2012-08-22 12:15 ` Mark Constable
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