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From: Edward Cree <ecree@solarflare.com>
To: Vlad Buslov <vladbu@mellanox.com>
Cc: <netdev@vger.kernel.org>, <davem@davemloft.net>,
	<jhs@mojatatu.com>, <xiyou.wangcong@gmail.com>,
	<jiri@resnulli.us>, <dcaratti@redhat.com>,
	<marcelo.leitner@gmail.com>, <kuba@kernel.org>
Subject: Re: [PATCH net-next v2 0/4] Implement classifier-action terse dump mode
Date: Tue, 19 May 2020 15:30:59 +0100	[thread overview]
Message-ID: <1581796d-2f28-397b-d234-2614b1e64f8a@solarflare.com> (raw)
In-Reply-To: <vbfo8qkb8ip.fsf@mellanox.com>

On 19/05/2020 10:04, Vlad Buslov wrote:
> On Mon 18 May 2020 at 18:37, Edward Cree <ecree@solarflare.com> wrote:
>> I.e. if next year it turns out that some
>>  user needs one parameter that's been omitted here, but not the whole dump,
>>  are they going to want to add another mode to the uapi?
> Why not just extend terse dump? I won't break user land unless you are
> removing something from it.
But then all terse dump users pay the performance cost for thatone
 app's extra need.

> - Generic data is covered by current terse dump implementation.
>   Everything else will be act or cls specific
Fair point.
I don't suppose something something BPF mumble solve this? I haven't
 been following the BPF dumping work in detail but it sounds like it
 might be a cheap way to get the 'more performant next step' that
 was mentioned in the subthread with David.  Just a thought.

-ed

  reply	other threads:[~2020-05-19 14:31 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-15 11:40 [PATCH net-next v2 0/4] Implement classifier-action terse dump mode Vlad Buslov
2020-05-15 11:40 ` [PATCH net-next v2 1/4] net: sched: introduce terse dump flag Vlad Buslov
2020-05-15 11:51   ` Jiri Pirko
2020-05-15 11:40 ` [PATCH net-next v2 2/4] net: sched: implement terse dump support in act Vlad Buslov
2020-05-15 11:51   ` Jiri Pirko
2020-05-15 11:40 ` [PATCH net-next v2 3/4] net: sched: cls_flower: implement terse dump support Vlad Buslov
2020-05-15 11:40 ` [PATCH net-next v2 4/4] selftests: implement flower classifier terse dump tests Vlad Buslov
2020-05-15 17:04 ` [PATCH net-next v2 0/4] Implement classifier-action terse dump mode Jakub Kicinski
2020-05-18  6:46   ` Vlad Buslov
2020-05-15 17:25 ` David Miller
2020-05-18  6:50   ` Vlad Buslov
2020-05-17 19:13 ` Cong Wang
2020-05-18  6:44   ` Vlad Buslov
2020-05-18 18:46     ` Cong Wang
2020-05-19  9:10       ` Vlad Buslov
2020-05-19 18:39         ` Cong Wang
2020-05-20  7:33           ` Vlad Buslov
2020-05-18 15:37 ` Edward Cree
2020-05-18 18:50   ` Cong Wang
2020-05-19  9:04   ` Vlad Buslov
2020-05-19 14:30     ` Edward Cree [this message]
2020-05-19 15:17       ` Vlad Buslov
2020-05-19 18:58     ` Cong Wang
2020-05-20  7:24       ` Vlad Buslov
2020-05-22 19:33         ` Cong Wang
2020-05-25 11:38           ` Vlad Buslov
2020-05-21 14:36   ` Vlad Buslov
2020-05-21 17:02     ` Jakub Kicinski
2020-05-22 16:16       ` Vlad Buslov
2020-05-23 11:06         ` Jamal Hadi Salim
2020-05-22 19:41     ` Cong Wang

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