netdev - Re: [PATCH net 3/4] net: aquantia: Improve and fix statistics on device

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Date:   Fri, 8 Dec 2017 12:43:40 +0300
From:   Igor Russkikh <igor.russkikh@...antia.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        David Arcari <darcari@...hat.com>,
        Pavel Belous <pavel.belous@...antia.com>,
        Nadezhda Krupnina <Nadezhda.Krupnina@...antia.com>,
        Simon Edelhaus <simon.edelhaus@...antia.com>
Subject: Re: [PATCH net 3/4] net: aquantia: Improve and fix statistics on
 device

Hi Andrew,

>> 1) Device hardware provides only 32bit counters. Using these directly
>> causes byte counters to overflow soon. A separate nic level structure
>> with 64 bit counters is now used to collect incrementally all the stats
>> and report these counters to ethtool stats and ndev stats.
>>
>> 2) ndev stats were filled from ring counters. These sometimes incorrectly
>> calculate byte and packet amounts when using LRO/LSO and jumboframes.
>> Fill ndev counters from hardware makes them precise.
>>
>> 3) Fill in multicast counter in ndev stats from hardware counter
>>
>> 4) Improve link state and statistics check interval callback: reduce normal
>> timeout from 2 secs to 1 sec. If link is down, reduce it to 500msec. This
>> speeds up link detection.
>>
>> 5) Reset driver level statistics to zero on initialization
>>
>> 6) Fix typo in ethtool statistics names
> Hi Igor
>
> This list suggests there should actually be 6 patches, not one.
>
1,2 and 3 are tightly linked and are difficult to separate.

4, 5 and 6 are small, agree I can split them.

BR, Igor