Date: Sun, 7 Sep 2003 23:46:55 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: hackers@freebsd.org Subject: if bpf fd's select()able? Message-ID: <20030907233940.M18589@woozle.rinet.ru>
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Dear colleagues, [all below is for 4-STABLE] I'm trying to write effective arp scanner for multi-interface router (esp. multi-vlan); I plan to use multiple bpf devices attached to different interfaces emitting ARP requests and filters listening to ARP replies; the most natural way to multiplex them for me is select(). However, my tests show that select()ing bpf fd does not lead to trigger packets available to bpf filter; the process hangs in select state while parallel tcpdump process shows packets desired *and* is in bpf state. Am I missing something "base"? References (surely, I'd already read manpages for bpf, pcap and related -- but did I still missed something serious?) would be greatly appreciated. Thanks for your time, as always. Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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