Re: [lwip-users] Queueing up UDP packets in RAW api

[Michael Steinberg]

Hey,

right, it was silly to even ask really ;)
Would I cause considerable harm to the RAM-pool if I allocated the 
necessary storage for queueing (basically a linked list node) from it 
with a RAW allocation? The packet and node pbufs would be deallocated 
together again later-on. The alternative would be to define a limit of 
packets to queue up, since space is at premium and I can't add another 
heap allocator... Maybe I'm just not seeing the easy solution today ;)

Kind regards
Michael


Am 15.02.2018 um 13:04 schrieb Simon Goldschmidt:
> Steinberg Michael wrote:
> > I need to queue up received UDP packets inside the UDP receive callback (RAW 
> > API) for
> > an event driven->polling transfer. I take that the passed in pbuf pointers may 
> > very
> > well point to pbuf chains, right?
> Yes.
>
> > Abusing the pbuf next pointers for my own custom packet queue seemed like a 
> > quick answer,
> > but I fear that it might backfire quickly...
> Not a good idea.
>
> Simon
>
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