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Re: [lwip-users] pbuf pool size / mss size in low memory environment and


From: Kieran Mansley
Subject: Re: [lwip-users] pbuf pool size / mss size in low memory environment and routing to slow link
Date: Fri, 20 Nov 2009 09:17:38 +0000

On Thu, 2009-11-19 at 13:15 -0800, fepgmbh wrote:
> First of all, 6 pbufs seems not to be very much, and as i understood
> they
> can be chained together, i changed this to 36 pbufs with 256 bytes
> each -
> noticing that now the TCP connections won't work with the 1200 byte
> MSS.

I wonder if your driver can handle that case correctly?  It has to know
to split the received packet across pbufs.  A naive driver might ignore
pbuf chains (on send as well as receive).

Kieran





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