netdev - Re: [PATCH net-next v2 0/2] net: bridge: multicast: per-port EHT hosts limit

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Date:   Thu, 28 Jan 2021 10:52:01 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Nikolay Aleksandrov <nikolay@...dia.com>
Cc:     Nikolay Aleksandrov <razor@...ckwall.org>,
        <netdev@...r.kernel.org>, <roopa@...dia.com>,
        <bridge@...ts.linux-foundation.org>, <davem@...emloft.net>
Subject: Re: [PATCH net-next v2 0/2] net: bridge: multicast: per-port EHT
 hosts limit

On Thu, 28 Jan 2021 11:12:26 +0200 Nikolay Aleksandrov wrote:
> On 28/01/2021 03:42, Jakub Kicinski wrote:
> > On Tue, 26 Jan 2021 11:35:31 +0200 Nikolay Aleksandrov wrote:  
> >> From: Nikolay Aleksandrov <nikolay@...dia.com>
> >>
> >> Hi,
> >> This set adds a simple configurable per-port EHT tracked hosts limit.
> >> Patch 01 adds a default limit of 512 tracked hosts per-port, since the EHT
> >> changes are still only in net-next that shouldn't be a problem. Then
> >> patch 02 adds the ability to configure and retrieve the hosts limit
> >> and to retrieve the current number of tracked hosts per port.
> >> Let's be on the safe side and limit the number of tracked hosts by
> >> default while allowing the user to increase that limit if needed.  
> > 
> > Applied, thanks!
> > 
> > I'm curious that you add those per-port sysfs files, is this a matter
> > of policy for the bridge? Seems a bit like a waste of memory at this
> > point.
> 
> Indeed, that's how historically new port and bridge options are added.
> They're all exposed via sysfs. I wonder if we should just draw the line
> and continue with netlink-only attributes. Perhaps we should add a comment
> about it for anyone adding new ones.
> 
> Since this is in net-next I can send a follow up to drop the sysfs part
> and another to add that comment.
> 
> WDYT?

SGTM!