6 Commits

Include renames

Author	SHA1	Message	Date
Matthias Radestock	b5df59660f	don't set pcap timeout, to prevent cpu churn ... pcap timeouts are a mystery. Setting the timeout to -1 used to reduce latency, but that was before we started setting immediate mode. And it turns out that with that timeout, pcap chews through a lot of CPU polling its file descriptor, checking timers, etc. With no timeout set an idle weave is completely idle - no system calls at all. Fixes #80	2014-09-23 11:06:41 +01:00
David Wragg	12b969004e	Filter outbound packets in the kernel ... It turns out that under Linux, libpcap implements the SetDirection filtering in userspace, causing some spurious wake ups of the packet capture thread. So set a BPF filter to discard outbound packets inside the kernel.	2014-09-17 23:42:48 +01:00
Matthias Radestock	7b85049e0b	fix error handling in pcap creation	2014-08-20 17:28:14 +01:00
Matthias Radestock	1a41df1edf	zero copy capture ... delay copying until necessary	2014-08-20 16:08:43 +01:00
Matthias Radestock	7c4464c852	pcap handles are not thread safe ... they contain an errbuf; there might be other issues too. So we must use different handles in the sniffer and udplistener goroutines.	2014-08-20 11:42:55 +01:00
Matthias Radestock	cb2cdc90cc	introduce abstraction for packet i/o	2014-08-20 11:18:12 +01:00