netdev - Re: [PATCH] r8169: Add counters tx_bytes and rx

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Date:	Wed, 26 May 2010 09:01:31 +0800
From:	Junchang Wang <junchangwang@...il.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] r8169: Add counters tx_bytes and rx_bytes for ethtool

Hi Francois,

>
> If the packets are short enough, replace "_bytes" by "_packets", "_minutes"
> by "_hours" or "_every_day" and the same kind of problem appear.

r8169 has provided 64-bit hardware counters for #packets,
#error_packets, etc. They works fine even on 32-bit systems. What we
really need is just counter rx_bytes and tx_bytes.

>
> You can fix the application at zero cost in the kernel: poll < 34 s and
> update the application counters with the kernel counters increment.

Thanks for you advice.


-- 
--Junchang
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