Re: [lwip-users] LwIP RAW - Simultaneous (full-duplex) communication

[Nenad Pekez]

> Have you read this:
>
> http://www.nongnu.org/lwip/2_0_x/pitfalls.html
I took a look at this. This has been provided by Xilinx drivers already. 
In their MAC receive handler they allocate memory for pbuf (call to 
pbuf_realloc() actually) and enqueue it. In the main loop, I call Xilinx 
function xemacif_input() which check if there is anything in the queue 
and if there is netif->input() is called as described in the example.

What I also noticed, when Zynq->PC side becomes active, in the TCP recv 
callback I get p->tot_len much larger than 1446, and from time to time 
there is also a print "Receive over run" from MAC error handler.

More I look at this, it seems as this is another problem in Xilinx drivers.