netdev - Re: [PATCH v3 1/1] ip-link: add switch to show human readable output

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Date:	Fri, 31 Oct 2014 11:17:53 +0100
From:	Christian Hesse <mail@...rm.de>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v3 1/1] ip-link: add switch to show human readable
 output

Stephen Hemminger <stephen@...workplumber.org> on Wed, 2014/10/29 22:47:
> I like the idea as a concept

Great! ;)

> but there are two issues:
>   1. The IEC suffix is a rarely used thing and is non-standard
>      for communications where K = 1000 M = 1000000 etc.
>      Please just use standard suffices

Removed the suffix in patch v3. Not sure if it is correct, though. I do use a
base of 2, so K = 1024, M = 1048576, ...

This is what ifconfig behaves as well. Output should give the exact same
numbers (except the suffix):

# ip -s -h link list en
3: en: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
mode DEFAULT group default qlen 1000
    link/ether 00:de:ad:be:ee:ef brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast
    26.3M      59.2K    0       68      0       0
    TX: bytes  packets  errors  dropped carrier collsns
    37.0M      67.6K    0       0       0       0
# ifconfig en 
en: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet XX.XX.XX.XX  netmask 255.255.255.0  broadcast XX.XX.XX.255
        ether 00:de:ad:be:ee:ef  txqueuelen 1000  (Ethernet)
        RX packets 60677  bytes 27671339 (26.3 MiB)
        RX errors 0  dropped 68  overruns 0  frame 0
        TX packets 69350  bytes 38874609 (37.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

>   2. Don't double print the data, if the user asks for human
>      format, only show the human format.

Fixed.

Hopefully I got the line breaks right. How to check print_link_stats32()?
Even von i686 ip calls print_link_stats64() on my systems.

I did some minor changes to the error stats column alignment. Is that ok? See
the difference of before and after:

# ip -s -s link list en    # before
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
mode DEFAULT group default qlen 1000
    link/ether 00:de:ad:be:ee:ef brd ff:ff:ff:ff:ff:ff 
    RX: bytes  packets  errors  dropped overrun mcast   
    144544239  100441   0       0       0       1      
    RX errors: length  crc     frame   fifo    missed
               0        0       0       0       0      
    TX: bytes  packets  errors  dropped carrier collsns 
    808343     9630     0       0       0       0      
    TX errors: aborted fifo    window  heartbeat transns
               0        0       0       0        2      
# ip -s -s link list en    # after
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
mode DEFAULT group default qlen 1000
    link/ether 00:de:ad:be:ee:ef brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast
    87432187   60642    0       0       0       1
    RX errors: length   crc     frame   fifo    missed
               0        0       0       0       0
    TX: bytes  packets  errors  dropped carrier collsns 
    450437     5793     0       0       0       0      
    TX errors: aborted  fifo   window heartbeat transns
               0        0       0       0       2      
-- 
Best regards,
Christian Hesse

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