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Re: [PATCH net-next 00/12] net: add and use function dev_fetch_sw_netstats for fetching pcpu_sw_netstats

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On 12.10.2020 00:10, Jakub Kicinski wrote:
> On Sun, 11 Oct 2020 21:34:58 +0200 Heiner Kallweit wrote:
>> In several places the same code is used to populate rtnl_link_stats64
>> fields with data from pcpu_sw_netstats. Therefore factor out this code
>> to a new function dev_fetch_sw_netstats().
> 
> FWIW probably fine to convert nfp_repr_get_host_stats64() as well, just
> take out the drop counter and make it a separate atomic. If you're up
> for that.
> 
Looking at nfp_repr_get_host_stats64() I'm not sure why the authors
decided to add a 64bit tx drop counter, struct net_device_stats has
an unsigned long tx_dropped counter already. And that the number of
dropped tx packets exceeds 32bit (on 32bit systems) seems not very
likely.



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