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List:       netfilter-devel
Subject:    Re: QUEUE, large udp message failure
From:       Russell Miller <rmiller () duskglow ! com>
Date:       2004-05-06 20:28:09
Message-ID: 200405061528.16034.rmiller () duskglow ! com
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On Thursday 06 May 2004 14:45, Scott MacKay wrote:

> Where PACKET_SIZE_MAX is 64000.  I have a normal
> ipq_read() loop using the readBuffer and it normally
> works fine, allowing me to do my stuff with the
> packet.
> The problem comes in when I get a large message
> (tested was 24000 bytes).  ipq_read fails.  I added
> some debug and it seems to be in
> ipq_netlink_recvfrom() where the recvfrom() fails with
> errno=105.  Is there some artifical cap on the size of
> a message which can be passed to the QUEUE target?
>
Don't know if this helps, but:

The payload size can be as high as 65536 bytes.  If your buffer is not large 
enough to receive the payload, ipq_read will return with ENOBUFS, which means 
your buffer is not large enough.  I bet if you set PACKET_SIZE_MAX to 65536, 
that problem goes away.

- --Russell

> -Scott
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- -- 

Russell Miller - rmiller@duskglow.com - Somewhere near Sioux City, IA.
Youth cannot know age, but age is guilty if it forgets youth
    - Professor Dumbledore
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