Re: [LARTC] ftp shaping and excluding ls packets

From: Andreas Unterkircher <unki@netshadow.at>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] ftp shaping and excluding ls packets
Date: Sat, 05 Nov 2005 14:00:42 +0000	[thread overview]
Message-ID: <436CBB0A.1010005@netshadow.at> (raw)
In-Reply-To: <436C0373.7080804@cfl.rr.com>

Another idea would be - if the directory which will be listed isn't too 
large - that you use netfilters connbytes match.
If less data are requested via ftp-data the will get a higher priority 
then bulk ftp-data. You can match with iptables
and put them in the desired queues.

Cheers,
Andreas

nix4me wrote:

> Toby wrote:
>
>> nix4me wrote:
>>  
>>
>>> I have examined the packets leaving and i can't seem to pin point 
>>> which are the listings.  I ran ethereal and then continually 
>>> requested lists, the only packets i see leaving are coming from port 
>>> 60000 which is the control port.
>>>   
>>
>>
>> As far as I know listings don't go through the control port, they go
>> through one of the data ports, as if you were downloading a file.
>>
>> That's why you cannot differentiate them from regular downloads, unless
>> the server software uses a different data port or different TOS flags or
>> something.
>>
>>
>> Toby
>>
>>  
>>
> Yes, I see them now.  They are indeed leaving on a shaped port range.  
> And the packets are larger than the ACK size that I am putting at the 
> head of the que.
>
> They seem to be 1450 in length.
>
> Mark
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