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Re: [lwip-users] pbuf pool size / mss size in low memory environmentand
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From: |
Simon Goldschmidt |
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Subject: |
Re: [lwip-users] pbuf pool size / mss size in low memory environmentand routing to slow link |
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Date: |
Wed, 02 Dec 2009 16:22:44 +0100 |
> I'm just wondering how the PPP of LWIP is handling the pbuf's, maybe
> someone can drop a line about this ...
I don't know that by heart but I think I remember the PPP code (as it is ported
from sources that don't know pbufs) needs the input packets in contigouous
memory and copies from PBUF_POOL to PBUF_RAM if the input packet is a linked
list of pbufs (i.e. p->len != p->tot_len).
You might therefore be faster setting the size of pool pbufs high enough...
Simon
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