[lwip-users] using LWIP_PBUF_CUSTOM_DATA together with socket api

[Massimiliano Cialdi]

I'm trying to port a project to lwip. This project uses BSD sockets
calls, so first, I used lwip's socket APIs.
The project I'm trying to port has to deal with packet timestamping,
that's why I used LWIP_PBUF_CUSTOM_DATA as explained here
https://savannah.nongnu.org/bugs/?55078
This way I can "enrich" the pbuf structure with metadata fields of my own.

The question is: how do I retrieve my metadata using the socket API?
For example how do I get a read pbuf? Or how do I convert the socket
to a netconn?

best regards
Max

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VIS!