David Miller <da...@davemloft.net> :
[...]
> Your counter offsets should be read at probe time, not open time.

It can be done but the "CmdRxEnb / rx traffic must be enabled" constraint
will make it a major pita. 

Reading counter offsets at the end of open() naturally solves this
constraint (retentive error unwinding in opne() stops being completely
trivial though :o/ ).

> Bringing the interface is brought down/up should not reset the
> counters.

Afaiks rtl8169_tc_offsets.inited in rtl8169_init_counter_offsets
takes care of it: it's set during the first open() after probe().

Looking at it again, the patch directly stores 16 and 32 bit values
in rtnl_link_stats64. Nobody should care about exact exceedingly high
error count but rx_multicast ought to be accumulated.

-- 
Ueimor
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