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Date:   Fri, 18 Sep 2020 22:52:56 -0600
From:   David Ahern <dsahern@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     stephen@...workplumber.org, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2-next] ip: promote missed packets to the -s row

On 9/18/20 9:48 AM, Jakub Kicinski wrote:
> On Fri, 18 Sep 2020 09:44:35 -0600 David Ahern wrote:
>> On 9/16/20 1:42 PM, Jakub Kicinski wrote:
>>> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
>>>     link/ether 00:0a:f7:c1:4d:38 brd ff:ff:ff:ff:ff:ff
>>>     RX: bytes  packets  errors  dropped overrun mcast
>>>     6.04T      4.67G    0       0       0       67.7M
>>>     RX errors: length   crc     frame   fifo    missed
>>>                0        0       0       0       7
>>>     TX: bytes  packets  errors  dropped carrier collsns
>>>     3.13T      2.76G    0       0       0       0
>>>     TX errors: aborted  fifo   window heartbeat transns
>>>                0        0       0       0       6
>>>
>>> After:
>>>
>>> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
>>>     link/ether 00:0a:f7:c1:4d:38 brd ff:ff:ff:ff:ff:ff
>>>     RX: bytes  packets  errors  dropped missed  mcast
>>>     6.04T      4.67G    0       0       7       67.7M
>>>     RX errors: length   crc     frame   fifo    overrun
>>>                0        0       0       0       0
>>>     TX: bytes  packets  errors  dropped carrier collsns
>>>     3.13T      2.76G    0       0       0       0
>>>     TX errors: aborted  fifo   window heartbeat transns
>>>                0        0       0       0       6  
>>
>> changes to ip output are usually not allowed.
> 
> Does that mean "no" or "you need to be more convincing"? :)
> 
> JSON output is not changed. I don't think we care about screen
> scrapers. If we cared about people how interpret values based 
> on their position in the output we would break that with every
> release, no?
> 

In this case you are not adding or inserting a new column, you are
changing the meaning of an existing column.

It's an 'error' stat so probably not as sensitive. I do not have a
strong religion on it since it seems to be making the error stat more up
to date.


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