From: roopa <roopa@cumulusnetworks•com>
To: Jamal Hadi Salim <jhs@mojatatu•com>
Cc: Thomas Graf <tgraf@suug•ch>,
netdev@vger•kernel.org, davem@davemloft•net,
Nikolay Aleksandrov <nikolay@cumulusnetworks•com>
Subject: Re: [PATCH net-next v2 1/2] rtnetlink: add new RTM_GETSTATS message to dump link stats
Date: Wed, 13 Apr 2016 23:36:09 -0700 [thread overview]
Message-ID: <570F3A59.7010006@cumulusnetworks.com> (raw)
In-Reply-To: <570E3784.9010809@mojatatu.com>
On 4/13/16, 5:11 AM, Jamal Hadi Salim wrote:
> On 16-04-12 09:21 AM, Thomas Graf wrote:
>> On 04/11/16 at 08:53pm, roopa wrote:
>>> Top level stats attributes can be netdev or global attributes: We can include string "LINK" in
>>> the names of all stats belonging to a netdev to make it easier to recognize the netdev stats (example):
>>> IFLA_STATS_LINK64, (netdev)
>>> IFLA_STATS_LINK_INET6, (netdev)
>>> IFLA_STATS_TCP, (non-netdev, global tcp stats)
>>
>> This is fine as well. It means that we cant mix netdev and non-netdev
>> stats or stats for multiple netdevs in the same request which would
>> not be the case if you nest it and have a top level attribute which
>> is a list of requests. That may be borderline to overengineering
>> though so I'm fine this as well.
>
>
> Well - using a subheader which has ifindex on it for non-netdev stats
> seems wrong then.
I think its ok for ifindex to be optional.
Almost all msg types have subheaders with ifindex and it is almost always
optional in the GET request (eg RTM_GETLINK with NLM_F_DUMP ifindex is
optional and never checked). Here we make ifindex optional both ways.
Its optional in the GET request with NLM_F_DUMP and it is also optional
in the msg to userspace (NEW). And no ifindex in NEW will indicate that the
message is not tied to a specific netdev (ie global stats).
Thanks!
next prev parent reply other threads:[~2016-04-14 6:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-09 6:38 [PATCH net-next v2 1/2] rtnetlink: add new RTM_GETSTATS message to dump link stats Roopa Prabhu
2016-04-09 14:30 ` Jamal Hadi Salim
2016-04-09 18:00 ` roopa
2016-04-10 13:48 ` Jamal Hadi Salim
2016-04-10 19:17 ` roopa
2016-04-10 8:16 ` Thomas Graf
2016-04-10 18:28 ` roopa
2016-04-12 3:53 ` roopa
2016-04-12 13:21 ` Thomas Graf
2016-04-13 12:11 ` Jamal Hadi Salim
2016-04-14 6:36 ` roopa [this message]
2016-04-14 4:19 ` David Miller
2016-04-14 6:35 ` roopa
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