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From: Thomas Monjalon <thomas@monjalon.net>
To: Andrey Vesnovaty <andreyv@nvidia.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	jerinj@marvell.com,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>,
	"stephen@networkplumber.org" <stephen@networkplumber.org>,
	"bruce.richardson@intel.com" <bruce.richardson@intel.com>,
	Ori Kam <orika@nvidia.com>,
	Slava Ovsiienko <viacheslavo@nvidia.com>,
	"andrey.vesnovaty@gmail.com" <andrey.vesnovaty@gmail.com>,
	"ajit.khaparde@broadcom.com" <ajit.khaparde@broadcom.com>,
	"samik.gupta@broadcom.com" <samik.gupta@broadcom.com>
Subject: Re: [dpdk-dev] [PATCH v7 1/2] ethdev: add flow shared action API
Date: Wed, 14 Oct 2020 09:22:35 +0200
Message-ID: <1884452.bCSgJj8pPL@thomas> (raw)
In-Reply-To: <d3a63fbe-7373-bfd7-b166-12c56fe782c6@oktetlabs.ru>

14/10/2020 08:49, Andrew Rybchenko:
> On 10/13/20 11:06 PM, Andrey Vesnovaty wrote:
> > From: Andrew Rybchenko <Andrew.Rybchenko@oktetlabs.ru>
> >>> Shared action create/use/destroy
> >>> ===
> >>> Shared action may be reused by some or none flow rules at any given
> >>> moment, i.e. shared action resides outside of the context of any flow.
> >>> Shared action represent HW resources/objects used for action offloading
> >>> implementation.
> >>> API for shared action create (see `rte_flow_shared_action_create()`):
> >>> - should allocate HW resources and make related initializations required
> >>>   for shared action implementation.
> >>> - make necessary preparations to maintain shared access to
> >>>   the action resources, configuration and state.
> >>> API for shared action destroy (see `rte_flow_shared_action_destroy()`)
> >>> should release HW resources and make related cleanups required for shared
> >>> action implementation.
> >>>
> >>> In order to share some flow action reuse the handle of type
> >>> `struct rte_flow_shared_action` returned by
> >>> rte_flow_shared_action_create() as a `conf` field of
> >>> `struct rte_flow_action` (see "example" section).
> >>>
> >>> If some shared action not used by any flow rule all resources allocated
> >>> by the shared action can be released by rte_flow_shared_action_destroy()
> >>> (see "example" section). The shared action handle passed as argument to
> >>> destroy API should not be used any further i.e. result of the usage is
> >>> undefined.
> >>>
> >>> Shared action re-configuration
> >>> ===
> >>> Shared action behavior defined by its configuration can be updated via
> >>> rte_flow_shared_action_update() (see "example" section). The shared
> >>> action update operation modifies HW related resources/objects allocated
> >>> on the action creation. The number of operations performed by the update
> >>> operation should not depend on the number of flows sharing the related
> >>> action. On return of shared action update API action behavior should be
> >>> according to updated configuration for all flows sharing the action.
> >>>
> >>> Shared action query
> >>> ===
> >>> Provide separate API to query shared action state (see
> >>> rte_flow_shared_action_update()). Taking a counter as an example: query
> >>> returns value aggregating all counter increments across all flow rules
> >>> sharing the counter. This API doesn't query shared action configuration
> >>> since it is controlled by rte_flow_shared_action_create() and
> >>> rte_flow_shared_action_update() APIs and no supposed to change by other
> >>> means.
> >>>
> >>> PMD support
> >>> ===
> >>> The support of introduced API is pure PMD specific design and
> >>> responsibility for each action type (see struct rte_flow_ops).

This sentence is strange.
Of course PMD implementation is a PMD specific design.
I think you can remove it.

> >>> testpmd
> >>> ===
> >>> In order to utilize introduced API testpmd cli may implement following
> >>> extension
> >>> create/update/destroy/query shared action accordingly
> >>>
> >>> flow shared_action (port) create {action_id (id)} (action) / end
> >>> flow shared_action (port) update (id) (action) / end
> >>> flow shared_action (port) destroy action_id (id) {action_id (id) [...]}
> >>> flow shared_action (port) query (id)
> >>>
> >>> testpmd example
> >>> ===
> >>>
> >>> configure rss to queues 1 & 2
> >>>
> >>>> flow shared_action 0 create action_id 100 rss queues 1 2 end / end
> >>>
> >>> create flow rule utilizing shared action
> >>>
> >>>> flow create 0 ingress \
> >>>     pattern eth dst is 0c:42:a1:15:fd:ac / ipv6 / tcp / end \
> >>>   actions shared 100 / end
> >>>
> >>> add 2 more queues
> >>>
> >>>> flow shared_action 0 modify 100 rss queues 1 2 3 4 end / end
> >>
> >> testpmd is out-of-scope of the patch and it is better to
> >> remove the description to avoid unsync if testpmd
> >> commands are changed.
> > 
> > There is still added value is testpmd example demonstrating usage of
> > shared action with rte flows. I will update the example to reflect the current
> > testpmd syntax for shared action.
> 
> Yes and no. IMHO It would be OK for series description etc,
> but not OK for the changeset description which will be
> kept in the history and will become misleading when
> commands are changed. I think that no information is better
> than potentially wrong information.

I agree with Andrew, the API explanation should be enough.
Talking about testpmd commands in the ethdev patch is not appropriate.




  reply	other threads:[~2020-10-14  7:22 UTC|newest]

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-02 12:05 [dpdk-dev] [PATCH] " Andrey Vesnovaty
2020-07-03 15:02 ` Jerin Jacob
2020-07-03 15:21   ` Thomas Monjalon
2020-07-04  9:54     ` Andrey Vesnovaty
2020-07-04 10:10   ` Andrey Vesnovaty
2020-07-04 12:33     ` Jerin Jacob
2020-07-05 10:26       ` Ori Kam
2020-07-06  9:00         ` Jerin Jacob
2020-07-06 12:28           ` Ori Kam
2020-07-06 13:32             ` Andrey Vesnovaty
2020-07-07  2:30               ` Jerin Jacob
2020-07-07  6:21                 ` Ori Kam
2020-07-07 15:21                   ` Ferruh Yigit
2020-07-07 17:24                     ` Ori Kam
2020-07-07 17:52                       ` Ferruh Yigit
2020-07-07 19:38                   ` Jerin Jacob
2020-07-07 21:03                     ` Ori Kam
2020-07-08  9:25                       ` Jerin Jacob
2020-07-08  9:47                         ` Ori Kam
2020-07-08 11:00                           ` Jerin Jacob
2020-07-08 11:50                             ` Thomas Monjalon
2020-07-08 12:18                             ` Ori Kam
     [not found]                               ` <20200708204015.24429-2-andreyv@mellanox.com>
2020-07-13  8:04                                 ` [dpdk-dev] [PATCH v2 1/6] ethdev: " Kinsella, Ray
2020-07-13 10:16                                   ` Andrew Rybchenko
2020-07-15  8:54                                   ` Andrew Rybchenko
2020-07-15  9:00                                     ` Andrew Rybchenko
2020-09-15 11:30                                     ` Andrey Vesnovaty
     [not found]                               ` <20200708204015.24429-3-andreyv@mellanox.com>
2020-07-13  8:06                                 ` [dpdk-dev] [PATCH v2 2/6] common/mlx5: modify advanced Rx object via DevX Kinsella, Ray
2020-07-08 21:39 ` [dpdk-dev] [PATCH v2 0/6] add flow shared action API + PMD Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 1/6] ethdev: add flow shared action API Andrey Vesnovaty
2020-09-12  2:18     ` Ajit Khaparde
2020-09-15 11:50       ` Andrey Vesnovaty
2020-09-15 15:49         ` Ajit Khaparde
2020-09-16 15:52           ` Andrey Vesnovaty
2020-09-16 19:20             ` Ajit Khaparde
2020-09-17 15:33               ` Andrew Rybchenko
2020-09-17 16:02                 ` Ori Kam
2020-09-24 19:25                   ` Ajit Khaparde
2020-09-26 11:09                     ` Andrey Vesnovaty
2020-10-03 22:06                       ` [dpdk-dev] [PATCH v3 00/10] RTE flow shared action Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 01/10] ethdev: add flow shared action API Andrey Vesnovaty
2020-10-04 11:10                           ` Ori Kam
2020-10-06 10:22                             ` Andrey Vesnovaty
2020-10-04 17:00                           ` Stephen Hemminger
2020-10-04 17:01                             ` Stephen Hemminger
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 02/10] ethdev: add conf arg to shared action icreate API Andrey Vesnovaty
2020-10-04 11:11                           ` Ori Kam
2020-10-06 10:28                             ` Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 03/10] common/mlx5: modify advanced Rx object via DevX Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 04/10] net/mlx5: modify hash Rx queue objects Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 05/10] net/mlx5: shared action PMD Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 06/10] net/mlx5: shared action PMD create conf arg Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 07/10] net/mlx5: driver support for shared action Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 08/10] net/mlx5: shared action create conf drv support Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 09/10] examples/flow_filtering: utilize shared RSS action Andrey Vesnovaty
2020-10-04 11:21                           ` Ori Kam
2020-10-06 10:34                             ` Andrey Vesnovaty
2020-10-03 22:06                         ` [dpdk-dev] [PATCH v3 10/10] app/testpmd: support shared action Andrey Vesnovaty
2020-10-04 11:28                           ` Ori Kam
2020-10-04 12:04                             ` Ori Kam
2020-10-06 10:36                               ` Andrey Vesnovaty
2020-10-04 11:14                         ` [dpdk-dev] [PATCH v3 00/10] RTE flow " Ori Kam
2020-10-06 10:28                           ` Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 2/6] common/mlx5: modify advanced Rx object via DevX Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 3/6] net/mlx5: modify hash Rx queue objects Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 4/6] net/mlx5: shared action PMD Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 5/6] net/mlx5: driver support for shared action Andrey Vesnovaty
2020-07-08 21:39   ` [dpdk-dev] [PATCH v2 6/6] examples/flow_filtering: utilize shared RSS action Andrey Vesnovaty
2020-07-09  4:44     ` Jerin Jacob
2020-07-09  6:08       ` Ori Kam
2020-07-09 12:25         ` Andrey Vesnovaty
2020-07-09 12:39           ` Thomas Monjalon
2020-07-09  4:39   ` [dpdk-dev] [PATCH v2 0/6] add flow shared action API + PMD Jerin Jacob
2020-10-06 20:08 ` [dpdk-dev] [PATCH v4 0/2] RTE flow shared action Andrey Vesnovaty
2020-10-06 20:08   ` [dpdk-dev] [PATCH v4 1/2] ethdev: add flow shared action API Andrey Vesnovaty
2020-10-07  6:27     ` Ori Kam
2020-10-06 20:08   ` [dpdk-dev] [PATCH v4 2/2] app/testpmd: support shared action Andrey Vesnovaty
2020-10-07  6:30     ` Ori Kam
2020-10-07 12:56 ` [dpdk-dev] [PATCH v5 0/2] RTE flow " Andrey Vesnovaty
2020-10-07 12:56   ` [dpdk-dev] [PATCH v5 1/2] ethdev: add flow shared action API Andrey Vesnovaty
2020-10-07 13:01     ` Ori Kam
2020-10-07 21:23     ` Ajit Khaparde
2020-10-08  7:28       ` Andrey Vesnovaty
2020-10-07 12:56   ` [dpdk-dev] [PATCH v5 2/2] app/testpmd: support shared action Andrey Vesnovaty
2020-10-07 18:36 ` [dpdk-dev] [PATCH v6 0/2] RTE flow " Andrey Vesnovaty
2020-10-07 18:36   ` [dpdk-dev] [PATCH v6 1/2] ethdev: add flow shared action API Andrey Vesnovaty
2020-10-07 18:36   ` [dpdk-dev] [PATCH v6 2/2] app/testpmd: support shared action Andrey Vesnovaty
2020-10-07 20:01     ` Ajit Khaparde
2020-10-08 10:58       ` Andrey Vesnovaty
2020-10-08 11:51 ` [dpdk-dev] [PATCH v7 0/2] RTE flow " Andrey Vesnovaty
2020-10-08 11:51   ` [dpdk-dev] [PATCH v7 1/2] ethdev: add flow shared action API Andrey Vesnovaty
2020-10-08 22:30     ` Ajit Khaparde
2020-10-14 11:47       ` Andrey Vesnovaty
2020-10-12 14:19     ` Andrew Rybchenko
2020-10-13 20:06       ` Andrey Vesnovaty
2020-10-14  6:49         ` Andrew Rybchenko
2020-10-14  7:22           ` Thomas Monjalon [this message]
2020-10-14 11:43             ` Andrey Vesnovaty
2020-10-14 11:42           ` Andrey Vesnovaty
2020-10-08 11:51   ` [dpdk-dev] [PATCH v7 2/2] app/testpmd: support shared action Andrey Vesnovaty
2020-10-08 23:54     ` Ajit Khaparde
2020-10-14 11:40 ` [dpdk-dev] [PATCH v8 0/2] RTE flow " Andrey Vesnovaty
2020-10-14 11:40   ` [dpdk-dev] [PATCH v8 1/2] ethdev: add shared actions to flow API Andrey Vesnovaty
2020-10-14 11:44     ` Andrew Rybchenko
2020-10-14 16:17       ` Ferruh Yigit
2020-10-14 11:40   ` [dpdk-dev] [PATCH v8 2/2] app/testpmd: support shared action Andrey Vesnovaty

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