[Click] Activation of optional handlers in NIC elements

[Alessandro Coli]

Hi. I have a technical question, hope in a kind answer :)

I already know that, when compiling Click, there is a way to activate some 
optional habdlers that are disabled by default; these handlers belong to the 
elements "PollDevice" and "ToDevice" and help you, if there is packet loss, to 
understand if really packets are dropped by the NIC, and to monitor even the 
DMA requests and replies. One of them should be called "missed frame" or 
something similar.

Unfortunately, i don't remember how to activate them when going to compile.

Anyone can help?

Many thanks :)

Alex