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Date:   Fri, 21 Aug 2020 16:50:52 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Ido Schimmel <idosch@...sch.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        netdev@...r.kernel.org, davem@...emloft.net, jiri@...dia.com,
        amcohen@...dia.com, danieller@...dia.com, mlxsw@...dia.com,
        roopa@...dia.com, andrew@...n.ch, vivien.didelot@...il.com,
        tariqt@...dia.com, ayal@...dia.com, mkubecek@...e.cz,
        Ido Schimmel <idosch@...dia.com>
Subject: Re: [RFC PATCH net-next 0/6] devlink: Add device metric support

On Fri, 21 Aug 2020 13:12:59 -0600 David Ahern wrote:
> On 8/21/20 10:53 AM, Jakub Kicinski wrote:
> > How many times do I have to say that I'm not arguing against the value
> > of the data? 
> > 
> > If you open up this interface either someone will police it, or it will
> > become a dumpster.  
> 
> I am not following what you are proposing as a solution. You do not like
> Ido's idea of stats going through devlink, but you are not being clear
> on what you think is a better way.
> 
> You say vxlan stats belong in the vxlan driver, but the stats do not
> have to be reported on particular netdevs. How then do h/w stats get
> exposed via vxlan code?

No strong preference, for TLS I've done:

# cat /proc/net/tls_stat 
TlsCurrTxSw                     	0
TlsCurrRxSw                     	0
TlsCurrTxDevice                 	0
TlsCurrRxDevice                 	0
TlsTxSw                         	0
TlsRxSw                         	0
TlsTxDevice                     	0
TlsRxDevice                     	0
TlsDecryptError                 	0
TlsRxDeviceResync               	0

We can add something over netlink, I opted for simplicity since global
stats don't have to scale with number of interfaces. 

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