[Cerowrt-devel] cerowrt 3.8.8-4 released

Dave Taht dave.taht at gmail.com
Sun Jun 2 14:12:49 EDT 2013

I note that 3.8.X has been kind of a disappointing kernel series
(notably the ADSL bug) and I'm not intending to ship a cero based on it.
Please feel free to keep hacking cero forward or reverting to Modena.

Also, after my very long trip around the eu...


I'm taking a *vacation*. This will be my last read email for at least a

In addition to the ongoing evals of other ath9k based boards...

I have a ton of boards like these on order or backorder:



On Sun, Jun 2, 2013 at 11:00 AM, Maciej Soltysiak <maciej at soltysiak.com>wrote:

> Hi Dave,
> I installed 3.8.8-4 more than a month ago but it took me this long to give
> up  trying to get DLNA working.
> For some reason those DLNA discovery (SSDP) multicasts seem not forward
> between se00 and sw00 or sw10 so the devices cannot find themselves. This
> is supposed to be done by minissdpd.

Have you tried disabling the firewall rules entirely?

> I know previously we've had it broken but you fixed it by adding some
> missing config in the kernel for IGMP I believe.
> But I'm unable to find the cause this time.
I am puzzled. IGMP was working in 3.7

> Would you suggest I have a go with a more recent cero release or does
> anything come to mind when I describe the issue?
> Best regards,
> Maciej Soltysiak
> On Wed, Apr 24, 2013 at 10:55 AM, Dave Taht <dave.taht at gmail.com> wrote:
>> + Refresh to openwrt barrier breaker head
>>    this now contains nearly all the patches formerly separately in
>> cerowrt!
>>    ++ fq_codel is on by default on ALL interfaces with default quantum of
>> 300
>>         (yes, openwrt has obsoleted pfifo_fast!)
>>    ++ unaligned access patches, etc, etc
>>    + dhcp-pd SERVER support
>>  the usual multitude of other openwrt fixes... all tested extensively
>> at the battlemesh conference.
>> + Update to dnsmasq 2.67test2
>> Toke got really busy in building his own version of cero and adding
>> + AQM scripts and gui
>> + tahoe-lafs added (untested)
>> + uftp4 updated
>> - no upnp/ssdp fix because I'm clueless
>> Yep, "AQM" gui now. /deep hat tip to toke for writing that. No need to
>> fiddle with any scripts now....
>> I guess of largest import here, underlying the gui, is that I had a
>> chance to deeply look at simple_qos.sh. There are several bugs in it,
>> that appear actually in the underlying tc subsystem.On ingress, the
>> priority queue was not being used properly, and a few other things
>> were odd in ipv6.
>> Out of frustration with that, and based on the data we'd got back from
>> cablelabs, I wrote the simplest possible rate limited fq_codel
>> implementation, using a reduced number of flows and a single tier of
>> htb only - and that works surprisingly well.
>> It's called "Simplest" in the new AQM screen. Give it a shot.
>> Secondly, the exercise of writing that and comparing it to the simple_qos
>> script
>> .... seems to have exposed a bug in htb at low bandwidths.
>> http://snapon.lab.bufferbloat.net/~d/dsl384k-htb-bug.svg
>> Here I was trying at 384k up and 8Mbit down, and the middle portion of
>> the upload graph there is kind of... impossible. At higher rates I
>> haven't seen this happen.
>> --
>> Dave Täht
>> Fixing bufferbloat with cerowrt:
>> http://www.teklibre.com/cerowrt/subscribe.html
>> _______________________________________________
>> Cerowrt-devel mailing list
>> Cerowrt-devel at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/cerowrt-devel

Dave Täht

Fixing bufferbloat with cerowrt:
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