Currently, linux tc has very useful concept of a 'index' for a given policy. However, I need to have policers on multiple hosts to share the same index (and thus, know and police the aggregate traffic across a set of routers). I'd like to be able to share tc policers across a set of boxes. Unfortunately, I'm not knowledgeable enough myself to implement that, but I can throw some money at the pool and hope someone picks it up. ;) Proposed design: Userland daemon that polls kernel tc structure every X milliseconds and broadcasts current bps rate (assuming we are using ewma) to a set of IP addresses. Configuration would have list of indices and list of IP addresses these indices are broadcast to. Kernel changes: Add netlink interface to look up/modify (by "injecting" traffic) policer's structures (interface to tcf_police_lookup and tcf_police_dump). Adding external traffic to policer structures is somewhat tricky, but I'm sure it is possible. At this point, I only care about EWMA, which isn't all that hard. Budget and bounty: 300$ Any takes? -alex _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
