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From: Ivan Malov <ivan.malov@oktetlabs.ru>
To: dev@dpdk.org
Cc: Thomas Monjalon <thomas@monjalon.net>, Ori Kam <orika@nvidia.com>
Subject: [dpdk-dev] [PATCH v2 00/12] ethdev: rework transfer flow API
Date: Sun, 10 Oct 2021 03:04:51 +0300
Message-ID: <20211010000503.28712-1-ivan.malov@oktetlabs.ru> (raw)
In-Reply-To: <20211001134716.1608857-1-andrew.rybchenko@oktetlabs.ru>

As per RFC [1], action PORT_ID appears to be ambiguous. Its name suggests
that matching traffic be sent to the ethdev with the specified ID, that
is, to the application. However, in Open vSwitch, the action is used to
send traffic to a remote entity represented by the given port, that is,
in the opposite direction. Its interpretation across PMDs also varies.

RFC [2] attempted to define action PORT_ID semantics in vSwitch sense.
However, this solution would completely abandon the opposite meaning.

One more effort, RFC [3], was meant to declare that the use of direction
attributes in "transfer" flows assumed implicit filtering by the port ID
appearing as the first argument in rte_flow_create(). However, not all
PMDs require such filtering, so the RFC turned out rather disputable.


Since then, all of that has been given more thought:

1. One should not attempt to fix action PORT_ID. Instead, two new actions
   should be introduced. The first one should send traffic to the given
   ethdev. The second one should send it to the represented entity.

2. Similar to (1), two new items should be defined. The first one should
   match traffic going down from the given ethdev. The second one should
   match traffic going up from the entity represented by that ethdev.

3. The application always knows which packets come through which ethdevs.
   So, as per (2), the application can use the new item to match traffic
   arriving from precise entities represented by the relevant ethdev IDs.

4. New items suggested in (2) do not require the use of direction
   attributes. These items define precise directions on their own.

5. As a consequence of (3) and (4), the problem of implicit filtering
   by rte_flow_create() port ID argument and direction attributes is
   no longer a blocker. The new items allow to dispose of it.


The new items appear to be symmetrical to each other. So do the new
actions. This requires that their names reflect the symmetry. Also,
the names should respect the existing concept of port representors.
By the looks of it, terms "PORT_REPRESENTOR" and "REPRESENTED_PORT"
satisfy these requirements. However, currently, ethdevs associated
with network ports are not considered as their representors. Such
understanding is mentioned in the documentation, but it's not
expressed in the code (see enum rte_eth_representor_type).


The short of it, this patch series follows points (1-5) to rework
support for "transfer" flows accordingly. On the way, a string of
ambiguous pattern items (PF, VF, PHY_PORT) is deprecated.

The patch series also updates PMDs which support item and action PORT_ID
to add support for replacements (1-2). However, there're some exceptions:

 - Support for traffic source items in the case of net/mlx5 is really
   complicated. This series does not rework it. The PMD maintainer
   can do the job much better and test the new code accordingly;

 - Support for action REPRESENTED_PORT is not added to net/sfc.
   This will be done when support for VF representors has been
   upstreamed, just for the new code to apply cleanly.


[1] https://patches.dpdk.org/project/dpdk/patch/20210907125157.3843-1-ivan.malov@oktetlabs.ru/
[2] https://patches.dpdk.org/project/dpdk/patch/20210903074610.313622-1-andrew.rybchenko@oktetlabs.ru/
[3] https://patches.dpdk.org/project/dpdk/patch/20210901151104.3923889-1-andrew.rybchenko@oktetlabs.ru/

Andrew Rybchenko (6):
  net/bnxt: support meta flow items to match on traffic source
  net/bnxt: support meta flow actions to overrule destinations
  net/enic: support meta flow actions to overrule destinations
  net/mlx5: support represented port flow action
  net/octeontx2: support port representor flow action
  net/sfc: support port representor flow item

Ivan Malov (6):
  ethdev: add port representor item to flow API
  ethdev: add represented port item to flow API
  ethdev: add port representor action to flow API
  ethdev: add represented port action to flow API
  ethdev: deprecate hard-to-use or ambiguous items and actions
  ethdev: deprecate direction attributes in transfer flows

 app/test-pmd/cmdline_flow.c                   | 104 +++++++
 doc/guides/nics/mlx5.rst                      |   4 +-
 doc/guides/nics/octeontx2.rst                 |   5 +-
 doc/guides/nics/sfc_efx.rst                   |   2 +
 doc/guides/prog_guide/rte_flow.rst            | 270 +++++++++++++++++-
 doc/guides/rel_notes/deprecation.rst          |  18 +-
 doc/guides/rel_notes/release_21_11.rst        |   8 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst   |  19 ++
 drivers/net/bnxt/tf_ulp/ulp_rte_handler_tbl.c |  22 +-
 drivers/net/bnxt/tf_ulp/ulp_rte_parser.c      | 161 ++++++++---
 drivers/net/bnxt/tf_ulp/ulp_rte_parser.h      |  12 +-
 drivers/net/enic/enic_fm_flow.c               |  93 ++++--
 drivers/net/mlx5/mlx5_flow_dv.c               |  62 +++-
 drivers/net/octeontx2/otx2_flow_parse.c       |  16 +-
 drivers/net/sfc/sfc_mae.c                     |  72 +++++
 lib/ethdev/rte_flow.c                         |   4 +
 lib/ethdev/rte_flow.h                         | 162 ++++++++++-
 17 files changed, 914 insertions(+), 120 deletions(-)

-- 
2.20.1


  parent reply	other threads:[~2021-10-10  0:05 UTC|newest]

Thread overview: 155+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 12:51 [dpdk-dev] [RFC PATCH] ethdev: clarify flow attribute and action port ID semantics Ivan Malov
2021-10-01 13:47 ` [dpdk-dev] [PATCH v1 00/12] ethdev: rework transfer flow API Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 01/12] ethdev: add ethdev item to " Andrew Rybchenko
2021-10-03 11:52     ` Ori Kam
2021-10-03 17:40       ` Ivan Malov
2021-10-03 21:09         ` Ori Kam
2021-10-04  0:00           ` Ivan Malov
2021-10-04 10:47             ` Andrew Rybchenko
2021-10-04 11:08               ` Ivan Malov
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 02/12] ethdev: add eswitch port " Andrew Rybchenko
2021-10-03 12:40     ` Ori Kam
2021-10-03 18:10       ` Ivan Malov
2021-10-04  5:45         ` Ori Kam
2021-10-04 11:05           ` Ivan Malov
2021-10-04 11:37             ` Ori Kam
2021-10-04 11:58               ` Ivan Malov
2021-10-05  6:20                 ` Ori Kam
2021-10-05  9:19                   ` Andrew Rybchenko
2021-10-05 12:12                     ` Ivan Malov
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 03/12] ethdev: add ethdev action " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 04/12] ethdev: add eswitch port " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 06/12] ethdev: deprecate direction attributes in transfer flows Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 07/12] net/bnxt: support ethdev and E-Switch port flow items Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 08/12] net/bnxt: support ethdev and E-Switch port flow actions Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 09/12] net/enic: " Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 10/12] net/mlx5: support E-Switch port flow action Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 11/12] net/octeontx2: support ethdev " Andrew Rybchenko
2021-10-04 11:13     ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2021-10-04 12:45       ` Andrew Rybchenko
2021-10-01 13:47   ` [dpdk-dev] [PATCH v1 12/12] net/sfc: support ethdev flow item Andrew Rybchenko
2021-10-10  0:04   ` Ivan Malov [this message]
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 01/12] ethdev: add port representor item to flow API Ivan Malov
2021-10-10 11:15       ` Ori Kam
2021-10-10 13:30         ` Ivan Malov
2021-10-10 14:04           ` Ori Kam
2021-10-10 15:02             ` Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 02/12] ethdev: add represented port " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 03/12] ethdev: add port representor action " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 04/12] ethdev: add represented port " Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-10  0:04     ` [dpdk-dev] [PATCH v2 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 09/12] net/enic: " Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-10  0:05     ` [dpdk-dev] [PATCH v2 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-10 14:39   ` [dpdk-dev] [PATCH v3 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-11 11:49       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-12 20:55       ` Slava Ovsiienko
2021-10-12 23:14         ` Ivan Malov
2021-10-13 18:26           ` Slava Ovsiienko
2021-10-13 11:52       ` Ferruh Yigit
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 02/12] ethdev: add represented port " Ivan Malov
2021-10-11 11:51       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 03/12] ethdev: add port representor action " Ivan Malov
2021-10-11 18:18       ` Ori Kam
2021-10-12 12:39         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 04/12] ethdev: add represented port " Ivan Malov
2021-10-11 18:20       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-11 18:23       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-13 11:53       ` Ferruh Yigit
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-11 18:33       ` Ori Kam
2021-10-12 12:40         ` Andrew Rybchenko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 09/12] net/enic: " Ivan Malov
2021-10-12 17:03       ` Hyong Youb Kim (hyonkim)
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-12 21:23       ` Slava Ovsiienko
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-10 14:39     ` [dpdk-dev] [PATCH v3 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-12 14:45     ` [dpdk-dev] [PATCH v3 00/12] ethdev: rework transfer flow API Ferruh Yigit
2021-10-13 11:51     ` Ferruh Yigit
2021-10-13 16:42   ` [dpdk-dev] [PATCH v4 " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 09/12] net/enic: " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 16:42     ` [dpdk-dev] [PATCH v4 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 16:57   ` [dpdk-dev] [PATCH v4 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 09/12] net/enic: " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 16:57     ` [dpdk-dev] [PATCH v5 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 17:02   ` [dpdk-dev] [PATCH v6 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 17:15       ` Andrew Rybchenko
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 09/12] net/enic: " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 18:02       ` Slava Ovsiienko
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-13 17:02     ` [dpdk-dev] [PATCH v6 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 17:34   ` [dpdk-dev] [PATCH v7 00/12] ethdev: rework transfer flow API Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 01/12] ethdev: add port representor item to " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 02/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 03/12] ethdev: add port representor action " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 04/12] ethdev: add represented port " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 05/12] ethdev: deprecate hard-to-use or ambiguous items and actions Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 06/12] ethdev: deprecate direction attributes in transfer flows Ivan Malov
2021-10-13 18:48       ` Slava Ovsiienko
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 07/12] net/bnxt: support meta flow items to match on traffic source Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 08/12] net/bnxt: support meta flow actions to overrule destinations Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 09/12] net/enic: " Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 10/12] net/mlx5: support represented port flow action Ivan Malov
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 11/12] net/octeontx2: support port representor " Ivan Malov
2021-10-20  2:33       ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2021-10-13 17:34     ` [dpdk-dev] [PATCH v7 12/12] net/sfc: support port representor flow item Ivan Malov
2021-10-13 21:08     ` [dpdk-dev] [PATCH v7 00/12] ethdev: rework transfer flow API Ferruh Yigit
2021-10-05  0:36 ` [dpdk-dev] [PATCH] ethdev: let apps find transfer admin port for a given ethdev Ivan Malov
2021-10-05  9:22   ` Ori Kam
2021-10-05 12:41     ` Ivan Malov
2021-10-05 16:04       ` Ori Kam
2021-10-05 17:56   ` Thomas Monjalon
2021-10-05 18:22     ` Ivan Malov
2021-10-05 19:04       ` Thomas Monjalon
2021-10-05 21:10   ` [dpdk-dev] [PATCH v2] ethdev: add API to query proxy port to manage transfer flows Ivan Malov
2021-10-06  7:47     ` Andrew Rybchenko
2021-10-06 12:33   ` [dpdk-dev] [PATCH v3] " Ivan Malov
2021-10-14  3:21   ` [dpdk-dev] [PATCH v4] " Ivan Malov
2021-10-14 11:45     ` Ferruh Yigit
2021-10-26 14:46     ` David Marchand
2021-10-26 15:47       ` Ivan Malov
2021-10-26 15:58         ` Thomas Monjalon
2021-10-26 16:15           ` Ferruh Yigit

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