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From: Ed Wildgoose <lists@wildgooses.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Modify the TCP Window size
Date: Sun, 25 Jul 2004 23:20:21 +0000	[thread overview]
Message-ID: <41044035.4010606@wildgooses.com> (raw)
In-Reply-To: <BAY15-F5wxkwzq3SUEE0005b539@hotmail.com>

Ricardo Leite wrote:

> Hi lartc users,
>
> When a packet arrived to a network device it was stored on a skb 
> structure and then enqueue on a network stack.
>
> One of the tests that I want to do is modify the TCP window size and 
> verify the changes on the bandwidth between two hosts.
> To do that I need to know how to modify de packet window size and 
> maybe recalculate the checksum value of the TCP packet.
>
> All I can do is read the information of the packet stored on the skb 
> structure.


I think I saw a patch in patchomatic for iptables to modify window 
size.  Perhaps have a look at that and see if it offers you some clues.  
I seem to remember the answer is in the ACK packets sent back to the server?

Ed W
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      reply	other threads:[~2004-07-25 23:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-25 11:57 [LARTC] Modify the TCP Window size Ricardo Leite
2004-07-25 23:20 ` Ed Wildgoose [this message]

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