From: David Miller <davem@davemloft.net>
To: jiri@resnulli.us
Cc: netdev@vger.kernel.org, kuba@kernel.org, saeedm@mellanox.com,
leon@kernel.org, michael.chan@broadcom.com, vishal@chelsio.com,
jeffrey.t.kirsher@intel.com, idosch@mellanox.com,
aelior@marvell.com, peppe.cavallaro@st.com,
alexandre.torgue@st.com, jhs@mojatatu.com,
xiyou.wangcong@gmail.com, pablo@netfilter.org,
ecree@solarflare.com, mlxsw@mellanox.com
Subject: Re: [patch net-next v4 00/10] net: allow user specify TC action HW stats type
Date: Sun, 08 Mar 2020 21:09:12 -0700 (PDT) [thread overview]
Message-ID: <20200308.210912.1633299574639128341.davem@davemloft.net> (raw)
In-Reply-To: <20200307114020.8664-1-jiri@resnulli.us>
From: Jiri Pirko <jiri@resnulli.us>
Date: Sat, 7 Mar 2020 12:40:10 +0100
> Currently, when user adds a TC action and the action gets offloaded,
> the user expects the HW stats to be counted and included in stats dump.
> However, since drivers may implement different types of counting, there
> is no way to specify which one the user is interested in.
>
> For example for mlx5, only delayed counters are available as the driver
> periodically polls for updated stats.
>
> In case of mlxsw, the counters are queried on dump time. However, the
> HW resources for this type of counters is quite limited (couple of
> thousands). This limits the amount of supported offloaded filters
> significantly. Without counter assigned, the HW is capable to carry
> millions of those.
>
> On top of that, mlxsw HW is able to support delayed counters as well in
> greater numbers. That is going to be added in a follow-up patch.
>
> This patchset allows user to specify one of the following types of HW
> stats for added action:
> immediate - queried during dump time
> delayed - polled from HW periodically or sent by HW in async manner
> disabled - no stats needed
>
> Note that if "hw_stats" option is not passed, user does not care about
> the type, just expects any type of stats.
>
> Examples:
...
Series applied, thanks Jiri.
prev parent reply other threads:[~2020-03-09 4:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-07 11:40 [patch net-next v4 00/10] net: allow user specify TC action HW stats type Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 01/10] flow_offload: Introduce offload of " Jiri Pirko
2020-03-09 16:52 ` Edward Cree
2020-03-09 17:34 ` Jiri Pirko
2020-03-09 17:46 ` Edward Cree
2020-03-10 11:19 ` Jiri Pirko
2020-03-09 21:36 ` Jakub Kicinski
2020-03-09 22:27 ` Edward Cree
2020-03-09 22:38 ` Jakub Kicinski
2020-03-10 11:22 ` Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 02/10] ocelot_flower: use flow_offload_has_one_action() helper Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 03/10] flow_offload: check for basic action hw stats type Jiri Pirko
2020-03-09 10:23 ` Jose Abreu
2020-03-09 12:04 ` Jiri Pirko
2020-03-09 13:31 ` Jose Abreu
2020-03-09 13:43 ` Jiri Pirko
2020-03-09 16:52 ` Edward Cree
2020-03-09 17:32 ` Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 04/10] mlxsw: spectrum_flower: Do not allow mixing HW stats types for actions Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 05/10] mlxsw: restrict supported HW stats type to "any" Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 06/10] flow_offload: introduce "immediate" HW stats type and allow it in mlxsw Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 07/10] flow_offload: introduce "delayed" HW stats type and allow it in mlx5 Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 08/10] mlxsw: spectrum_acl: Ask device for rule stats only if counter was created Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 09/10] flow_offload: introduce "disabled" HW stats type and allow it in mlxsw Jiri Pirko
2020-03-07 11:40 ` [patch net-next v4 10/10] sched: act: allow user to specify type of HW stats for a filter Jiri Pirko
2020-03-09 4:09 ` David Miller [this message]
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