From: Roopa Prabhu <roopa@cumulusnetworks•com>
To: Stephen Hemminger <stephen@networkplumber•org>
Cc: David Ahern <dsa@cumulusnetworks•com>,
Alexei Starovoitov <alexei.starovoitov@gmail•com>,
netdev@vger•kernel.org, davem@davemloft•net,
nikolay@cumulusnetworks•com, tgraf@suug•ch,
hannes@stressinduktion•org, jbenc@redhat•com, pshelar@ovn•org,
hadi@mojatatu•com
Subject: Re: [PATCH net-next v2 0/5] bridge: per vlan dst_metadata support
Date: Wed, 01 Feb 2017 21:07:56 -0800 [thread overview]
Message-ID: <5892BEAC.4030906@cumulusnetworks.com> (raw)
In-Reply-To: <20170201200418.6f4ee3aa@xeon-e3>
On 2/1/17, 8:04 PM, Stephen Hemminger wrote:
> On Wed, 01 Feb 2017 20:02:35 -0800
> Roopa Prabhu <roopa@cumulusnetworks•com> wrote:
>
>> On 2/1/17, 5:59 PM, David Ahern wrote:
>>> On 2/1/17 6:23 PM, Alexei Starovoitov wrote:
>>>> On Tue, Jan 31, 2017 at 10:59:50PM -0800, Roopa Prabhu wrote:
>>>>>
>>>>> This provides the required vxlan bridging function but poses a
>>>>> scalability problem with using a separate vxlan netdev for each vni.
>>>> if I remember correctly this issue was the main reason David Ahern
>>>> put netdev on diet. Sounds like no more fun at netconf ;)
>>>>
>>> oh, it still needs a diet ...
>> Even if the netdev went on diet, a netdev per vni for vxlan deployments is just too much overhead.
>>
>>
> But the intent was VNI == VLAN tag and there are cases where you need per VNI rules.
what rules are these ?
> Having them all smashed into one netdev seems like a step in the wrong direction.
only thing that a vxlan netdev per vni carries is a separate fdb table per vni with mac as the key. The natural progression from one fdb table per vni to a single fdb table for all vni's is to support a fdb table with <mac, vni> as the key. So, unclear why it is a step in the wrong direction. This is exactly how the vlan filtering bridge fdb table is built also ...with <mac, vlan> as the key.
And, note that a single vxlan netdev is already deployed in COLLECT_METADATA mode. This series, just makes the fdb
available to the single vxlan netdev in COLLECT_METADATA mode. No change to the normal default mode of one vxlan netdev per vni.
next prev parent reply other threads:[~2017-02-02 5:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-01 6:59 [PATCH net-next v2 0/5] bridge: per vlan dst_metadata support Roopa Prabhu
2017-02-01 6:59 ` [PATCH net-next v2 1/5] ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info mode Roopa Prabhu
2017-02-01 6:59 ` [PATCH net-next v2 2/5] vxlan: support fdb and learning in COLLECT_METADATA mode Roopa Prabhu
2017-02-11 4:05 ` Joe Stringer
2017-02-11 4:55 ` Roopa Prabhu
2017-02-01 6:59 ` [PATCH net-next v2 3/5] bridge: uapi: add per vlan tunnel info Roopa Prabhu
2017-02-01 6:59 ` [PATCH net-next v2 4/5] bridge: per vlan dst_metadata netlink support Roopa Prabhu
2017-02-01 6:59 ` [PATCH net-next v2 5/5] bridge: vlan dst_metadata hooks in ingress and egress paths Roopa Prabhu
2017-02-02 1:23 ` [PATCH net-next v2 0/5] bridge: per vlan dst_metadata support Alexei Starovoitov
2017-02-02 1:59 ` David Ahern
2017-02-02 4:02 ` Roopa Prabhu
2017-02-02 4:04 ` Stephen Hemminger
2017-02-02 5:07 ` Roopa Prabhu [this message]
2017-02-02 5:58 ` Roopa Prabhu
2017-02-02 7:06 ` Stephen Hemminger
2017-02-02 14:33 ` Roopa Prabhu
2017-02-03 1:50 ` David Miller
2017-02-03 6:06 ` Roopa Prabhu
2017-02-03 20:21 ` David Miller
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