On Thu, Apr 28, 2016 at 07:13:39PM +0200, Florian Westphal wrote: > [ CCing netdev so netns folks can have a look too ] > > This patch series removes the per-netns connection tracking tables. > All conntrack objects are then stored in one global global table. > > This avoids the infamous 'vmalloc' when lots of namespaces are used: > We no longer allocate a new conntrack table for each namespace (with 64k > size this saves 512kb of memory per netns). > > - net namespace address is made part of conntrack hash, to spread > conntracks over entire table even if netns has overlapping ip addresses. > - lookup and iterators net_eq() to skip conntracks living in a different > namespace. > > Only the main conntrack table is converted here: > NAT bysrc and expectation hashes are still per namespace (will be unified > in a followup series). Also, this retains the per-namespace kmem cache > for the conntrack objects. This will also be resolved in a followup series.
This rework in important, I'm going to place this batch in the tree so you can keep working on this. Thanks.
