On Wed, Apr 22, 2020 at 10:10 AM <xiangxia.m....@gmail.com> wrote: > > From: Tonghao Zhang <xiangxia.m....@gmail.com> > > In kernel datapath of Open vSwitch, there are only 1024 > buckets of meter in one datapath. If installing more than > 1024 (e.g. 8192) meters, it may lead to the performance drop. > But in some case, for example, Open vSwitch used as edge > gateway, there should be 20K at least, where meters used for > IP address bandwidth limitation. > > [Open vSwitch userspace datapath has this issue too.] > > For more scalable meter, this patch use meter array instead of > hash tables, and expand/shrink the array when necessary. So we > can install more meters than before in the datapath. > Introducing the struct *dp_meter_instance, it's easy to > expand meter though changing the *ti point in the struct > *dp_meter_table. > > Cc: Pravin B Shelar <pshe...@ovn.org> > Cc: Andy Zhou <az...@ovn.org> > Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com> > --- > net/openvswitch/datapath.h | 2 +- > net/openvswitch/meter.c | 240 ++++++++++++++++++++++++++++--------- > net/openvswitch/meter.h | 16 ++- > 3 files changed, 195 insertions(+), 63 deletions(-) > Acked-by: Pravin B Shelar <pshe...@ovn.org>
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