netdev - Re: [PATCH net-next 0/5] net: add and use dev_get

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Date:   Tue, 3 Nov 2020 15:46:27 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Saeed Mahameed <saeed@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>
Subject: Re: [PATCH net-next 0/5] net: add and use dev_get_tstats64

On 02.11.2020 23:36, Saeed Mahameed wrote:
> On Sun, 2020-11-01 at 13:33 +0100, Heiner Kallweit wrote:
>> It's a frequent pattern to use netdev->stats for the less frequently
>> accessed counters and per-cpu counters for the frequently accessed
>> counters (rx/tx bytes/packets). Add a default ndo_get_stats64()
>> implementation for this use case. Subsequently switch more drivers
>> to use this pattern.
>>
>> Heiner Kallweit (5):
>>   net: core: add dev_get_tstats64 as a ndo_get_stats64 implementation
>>   net: make ip_tunnel_get_stats64 an alias for dev_get_tstats64
>>   ip6_tunnel: use ip_tunnel_get_stats64 as ndo_get_stats64 callback
>>   net: dsa: use net core stats64 handling
>>   tun: switch to net core provided statistics counters
>>
> 
> not many left,
> 
> $ git grep dev_fetch_sw_netstats drivers/
> 
> drivers/infiniband/hw/hfi1/ipoib_main.c:        dev_fetch_sw_netstats(s
> torage, priv->netstats);
> drivers/net/macsec.c:   dev_fetch_sw_netstats(s, dev->tstats);
> drivers/net/usb/qmi_wwan.c:     dev_fetch_sw_netstats(stats, priv-
>> stats64);
> drivers/net/usb/usbnet.c:       dev_fetch_sw_netstats(stats, dev-
>> stats64);
> drivers/net/wireless/quantenna/qtnfmac/core.c:  dev_fetch_sw_netstats(s
> tats, vif->stats64);
> 
> Why not convert them as well ?
> macsec has a different implementation, but all others can be converted.
> 
OK, I can do this. Then the series becomes somewhat bigger.
@Jakub: Would it be ok to apply the current series and I provide the
additionally requested migrations as follow-up series?