Re: [lwip-users] using two memory pools for pbuf

[Thomas Richter (TCD - DE/Dresden)]

Hi Kieran,

I´m still working at the problematic that I have to inform from one side
of the Ethernet connection to another side that RNR (receive not ready =
can not handle more data, please wait) occurs.
I thought that I can be use TCP buffer handling and if window size is 0
(in TCP header) than the information will be transported from one to
another side.

Currently I see following possibilities:
Either I can use different buffer pools (e.g. use PBUF_POOL for data
port and PBUF_RAM for control port),
Or I can limit the data buffer pool to have at least one buffer for
incoming a command at control port which can be handled.

Does anybody see another possibilities?

Thomas


Am 07.04.2011 15:30, schrieb Kieran Mansley:
> Not as such. Where are your buffers getting used in such a way that
> they aren't available (e.g. on the data connection's send queue)?  It
> may be possible to structure things such that there is always a free
> buffer and so the control connection can be used.
>
> Kieran
>