netdev - Re: [PATCH iproute2 v2] add support for brief output for link and addresses

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Message-ID: <20150825210647.GM504@gospo.home.greyhouse.net>
Date:	Tue, 25 Aug 2015 14:06:48 -0700
From:	Andy Gospodarek <gospo@...ulusnetworks.com>
To:	Stephen Hemminger <shemming@...cade.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 v2] add support for brief output for link and
 addresses

On Tue, Aug 25, 2015 at 01:56:19PM -0700, Stephen Hemminger wrote:
> On Mon, 24 Aug 2015 21:16:15 -0400
> Andy Gospodarek <gospo@...ulusnetworks.com> wrote:
> 
> > This adds support for slightly less output than is normally provided by
> > 'ip link show' and 'ip addr show'.  This is a bit better when you have a
> > host with lots of interfaces.  Sample output:
> > 
> > $ ip -br link show
> > lo               UNKNOWN  00:00:00:00:00:00  <LOOPBACK,UP,LOWER_UP>
> > p7p1             UP       08:00:27:9d:62:9f  <BROADCAST,MULTICAST,UP,LOWER_UP>
> > p8p1             DOWN     08:00:27:dc:d8:ca  <NO-CARRIER,BROADCAST,MULTICAST,UP>
> > p9p1             UP       08:00:27:76:d9:75  <BROADCAST,MULTICAST,UP,LOWER_UP>
> > p7p1.100@...1    UP       08:00:27:9d:62:9f  <BROADCAST,MULTICAST,UP,LOWER_UP>
> > 
> > $ ip -br -4 addr show
> > lo               UNKNOWN  127.0.0.1/8
> > p7p1             UP       70.0.0.1/24
> > p8p1             DOWN     80.0.0.1/24
> > p7p1.100@...1    UP       200.0.0.1/24
> > 
> > $ ip -br -6 addr show
> > lo               UNKNOWN  ::1/128
> > p7p1             UP       7000::1/8 fe80::a00:27ff:fe9d:629f/64
> > p8p1             DOWN     8000::1/8
> > p9p1             UP       fe80::a00:27ff:fe76:d975/64
> > p7p1.100@...1    UP       fe80::a00:27ff:fe9d:629f/64
> > 
> > $ ip -br  addr show p7p1
> > p7p1             UP       70.0.0.1/24 7000::1/8 fe80::a00:27ff:fe9d:629f/64
> > 
> > v2: Now with color support!
> > 
> > Signed-off-by: Andy Gospodarek <gospo@...ulusnetworks.com>
> 
> Generally good idea but formatting is off.
> missing whitespace after mac address also LOWERLAYERDOWN is too long.
Excellent cut and paste work for the color support. :-(

> $ ./ip/ip -br li show
> lo               UNKNOWN  00:00:00:00:00:00<LOOPBACK,UP,LOWER_UP>
> eth1             DOWN     00:25:90:86:b3:6b<BROADCAST,MULTICAST>
> eth0             UP       00:25:90:86:b3:6a<BROADCAST,MULTICAST,UP,LOWER_UP>
> eth2             DOWN     00:1b:21:a0:e7:06<NO-CARRIER,BROADCAST,MULTICAST,UP>
> virbr4@...E      LOWERLAYERDOWN  52:54:00:e5:6c:94<NO-CARRIER,BROADCAST,MULTICAST,UP>
Ouch!

> virbr4-nic@...E  DOWN     52:54:00:e5:6c:94<BROADCAST,MULTICAST>
> virbr0@...E      UP       52:54:00:6b:fb:93<BROADCAST,MULTICAST,UP,LOWER_UP>
> virbr0-nic@...E  DOWN     52:54:00:6b:fb:93<BROADCAST,MULTICAST>
> vnet0@...E       UNKNOWN  fe:54:00:08:c5:41<BROADCAST,MULTICAST,UP,LOWER_UP>
> tun1@...E        UNKNOWN  <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP>
> tun0@...E        UNKNOWN  <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP>

I did some work at one point to make those fields variable width, but
abandoned it.  Maybe worth checking out again.
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