Re: select() regression in libpcap-devel?

[Guy Harris <guy () alum mit edu>]

On Jun 23, 2009, at 7:34 PM, Mike Kershaw wrote:

> (This now actually hits my error catcher where 100 fd highs in a row
> with no packets triggers a shutdown of the source, since libpcap-1.0.0
> seems to not return errors in pcap_dispatch when a netdev is removed  
> (ie
> usb unplugged or driver crash) and instead returns a 'hot' FD  
> constantly
> as well... this is a separate issue however :).

It should now do the right thing when a netdev is removed, regardless  
of whether you're just using pcap_loop()/pcap_dispatch()/pcap_next()/ 
pcap_next_ex(), using select(), or using poll() - i.e., you don't have  
to use poll() in order to get the "netdev removed" indication (if  
there are no packets available in the ring, libpcap will do a poll()  
even in non-blocking mode, to pick up the indication - it just uses a  
timeout of 0 if in non-blocking mode, so that the poll checks for  
packets available or an error but doesn't wait for either one).
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