First day of OLS

OLS started today (well, it started with the official beer-drinking BOF yesterday night). Like at the kernel summit, there are massive problems with the wireless network, forcing me to operate in offline mode most of the time.

The presenters are apparently all running in slow motion, so I can allocate a small time-slice to listen to them and spend most of the time working on some code (conntrack-accounting/ipfix, qsearch, browsing through Rusty's patches). OLS thus starts more productive than I would have thought ;)

Had lunch with Daniel Phillips, who is now working on clustering infrastructure at RedHat. We detected a general shift from the 'everything is a filesystem' to 'everything is a socket' mentality.

Working towards IPFIX based on conntrack

I've written a patch to add 64bit packet and byte counters for both directions of every ip_conntrack. This should enable a clean and efficient implementation of flow based accounting, when combined with ctnetlink events and a userspace daemon picking up those events.

I need to study the IPFIX (IETF Working Group) specifications in more detail before writing the respective daemon...

The patch is apparently working, you can read the counters via /proc/net/ip_conntrack and also use a modified/extended/updated version of the 'connbytes' match.