netdev - Re: Linux Ipv6 stats support

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Message-ID: <20210309044424.GA11084@ICIPI.localdomain>
Date:   Mon, 8 Mar 2021 23:44:24 -0500
From:   Stephen Suryaputra <ssuryaextr@...il.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Yogesh Ankolekar <ayogesh@...iper.net>,
        Girish Kumar S <girik@...iper.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Linux Ipv6 stats support

On Tue, Jan 26, 2021 at 09:05:22AM -0700, David Ahern wrote:
> On 1/25/21 4:26 AM, Yogesh Ankolekar wrote:
> > 
> >    We are looking for below IPv6 stats support in linux. Looks below
> > stats are not supported. Will these stats will be supported in future or
> > it is already supported in some version. Please guide.
> 
> I am not aware of anyone working on adding more stats for IPv6. Stephen
> Suryaputra attempted to add stats a few years back as I believe the
> resistance was around memory and cpu usage for stats in the hot path.

Sorry that I missed this. At that time it was IPv4 ifstats. I'm missing
the rest of the context here. Which IPv6 stats are being discussed here?

For my company, we have been doing the v4 stats using the implementation
that I brought up to netdev then. It is useful to debug forwarding
errors but it is an overhead having the out of tree patch everytime
kernel upgrade is needed, esp on upgrade to a major version.

Thank you,

Stephen.