libpcap and threading

[Francois Goudal <francois () goudal net>]

Hi,

I'm currently trying to write a piece of code using libpcap.
So far, I have been successfully able to capture some packets on an 
interface using libpcap with a filter.
Now, I'd like to be able to change this filter while capturing.
My program is threaded. There's a thread dedicated to running 
pcap_loop(). I'd like to know if it's possible to call pcap_setfilter() 
from another thread while pcap_loop() is executing and also if this will 
have the expected behaviour (i.e. change the filter on the fly) or 
instead if I will need to break out of pcap_loop(), then set the new 
filter and enter pcap_loop() again ?

Best regards,

--
Francois Goudal
EPITA Promo 2008 - GISTR
francois@goudal dot net

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