From: Tom Herbert <t...@herbertland.com> Date: Thu, 10 Dec 2015 16:19:29 -0800
> In the current implementation of ILA, LWT is used to perform > translation on both the input and output paths. This is functional, > however there is a big performance hit in the receive path. Early > demux occurs before the routing lookup (a hit actually obviates the > route lookup). Therefore the stack currently performs early > demux before translation so that a local connection with ILA > addresses is never matched. Note that this issue is not just > with ILA, but pretty much any translated or encapsulated packet > handled by LWT would miss the opportunity for early demux. Solving > the general problem seems non trivial since we would need to move > the route lookup before early demx thereby mitigating the value. > > This patch set addresses the issue for ILA by adding a fast locator > lookup that occurs before early demux. This done by hooking in to > NF_INET_PRE_ROUTING > > For the backend we implement an rhashtable that contains identifier > to locator to mappings. The table also allows more specific matches > that include original locator and interface. ... Please address Florian's feedback wrt. which nf hook registry interface should be used, and otherwise I think this series is ready to go. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
