netdev - Re: [PATCH iproute2] tc class: Show class names from file

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Message-ID: <5505EFC4.1070403@iogearbox.net>
Date:	Sun, 15 Mar 2015 21:47:00 +0100
From:	Daniel Borkmann <daniel@...earbox.net>
To:	Vadim Kochan <vadim4j@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] tc class: Show class names from file

Hi Vadim,

On 03/03/2015 05:41 PM, Vadim Kochan wrote:
> From: Vadim Kochan <vadim4j@...il.com>
>
> It is possible to use class names from file /etc/iproute2/cls_names
> which tc will use when showing class info:
>
>      # tc/tc -nm class show dev lo
> 	class htb 1:10 parent 1:1 leaf 10: prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
> 	class htb 1:1 root rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
> 	class htb web#1:20 parent 1:1 leaf 20: prio 0 rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
> 	class htb 1:2 root rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
> 	class htb 1:30 parent 1:1 leaf 30: prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
> 	class htb voip#1:40 parent 1:2 leaf 40: prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
> 	class htb 1:50 parent 1:2 leaf 50: prio 0 rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
> 	class htb 1:60 parent 1:2 leaf 60: prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
>
> or to specify via file path:
>
>      # tc/tc -nm -cf /tmp/cls_names class show dev lo
>
> Class names file contains simple "maj:min  name" structure:
>
> 1:20    web
> 1:40    voip
>
> Signed-off-by: Vadim Kochan <vadim4j@...il.com>

in your patch, there are a couple of malloc() calls in your db
creation, that you should check if they actually fail, see i.e.
db_names_alloc(). Would be good if you could follow-up with a fix.

Thanks,
Daniel
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