Re: [lwip-users] PBUF Leak Problems...

[Jonathan Larmour]

Thomas Catalino wrote:
> Jonathan -
>
> Thanks. One question, is each entry in the recvmbox just a single pbuf, 
> or could it be a chain of pbufs?  I assume each one could be a chain.

Indeed yes.

> If 
> so, under what conditions will the stack place a chain of pbufs in the 
> mailbox? I guess that was two ...

It can happen at least if:
- the low level hardware driver passes in newly received data as a pbuf chain;
- IP fragments were reassembled;
- TCP data is received out of order.

Jifl
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