netdev - Re: [PATCH net-next 1/2] mpls: packet stats

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Message-ID: <56C385E0.2000405@cumulusnetworks.com>
Date:	Tue, 16 Feb 2016 12:26:08 -0800
From:	roopa <roopa@...ulusnetworks.com>
To:	David Miller <davem@...emloft.net>
CC:	rshearma@...cade.com, netdev@...r.kernel.org, ebiederm@...ssion.com
Subject: Re: [PATCH net-next 1/2] mpls: packet stats

On 2/16/16, 7:41 AM, David Miller wrote:
> Statistics not provided via netlink are useless in real installations.
>
> In fact I would say to forego the proc interface entirely, it's a second
> class citizen for statistics gathering and has a non-triviel per-device
> cost for instantiation.
>
+1

I agree with the cost too.

Robert, I was thinking of responding to your series to add netlink stats for AF_MPLS in
 rtnl_af_ops (similar to  IFLA_INET6_STATS). But, soon realized that it is currently used by ipv6 alone
and it also ended up with a skip filter (RTEXT_FILTER_SKIP_STATS). So, extending that interface for
mpls is not the right thing to do either.

There is work being done for a separate netlink infrastructure for stats.
I would wait for that infrastructure to be ready to add mpls stats. It should be available soon.

thanks,
Roopa