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* [PATCH 00/10] add flow_rule infrastructure
@ 2018-11-16  1:41 Pablo Neira Ayuso
  2018-11-16  1:41 ` [PATCH 01/10] flow_dissector: add flow_rule and flow_match structures and use them Pablo Neira Ayuso
                   ` (11 more replies)
  0 siblings, 12 replies; 18+ messages in thread
From: Pablo Neira Ayuso @ 2018-11-16  1:41 UTC (permalink / raw)
  To: netdev
  Cc: davem, thomas.lendacky, f.fainelli, ariel.elior, michael.chan,
	santosh, madalin.bucur, yisen.zhuang, salil.mehta,
	jeffrey.t.kirsher, tariqt, saeedm, jiri, idosch, jakub.kicinski,
	peppe.cavallaro, grygorii.strashko, andrew, vivien.didelot,
	alexandre.torgue, joabreu, linux-net-drivers, ganeshgr

This patchset introduces a kernel intermediate representation (IR) to
express ACL hardware offloads, this is heavily based on the existing
flow dissector infrastructure and the TC actions. This IR can be used by
different frontend ACL interfaces such as ethtool_rxnfc and tc to
represent ACL hardware offloads. Main goal is to simplify the
development of ACL hardware offloads for the existing frontend
interfaces, the idea is that driver developers do not need to add one
specific parser for each ACL frontend, instead each frontend can just
generate this flow_rule IR and pass it to drivers to populate the
hardware IR.

                .   ethtool_rxnfc   tc
               |       (ioctl)    (netlink)
               |          |         |     translate native
      Frontend |          |         |  interface representation
               |          |         |      to flow_rule IR
               |          |         |
                .         \/        \/
                .         flow_rule IR
               |                |
       Drivers |                | parsing of flow_rule IR
               |                |  to populate hardware IR
               |               \/
                .      hardware IR (driver)

For design and implementation details, please have a look at:

	https://lwn.net/Articles/766695/

As an example, with this patchset, it should be possible to simplify the
existing net/qede driver which already has two parsers to populate the
hardware IR, one for ethtool_rxnfc interface and another for tc.

This batch is composed of 10 patches:

Patch #1 adds the flow_match structure, this includes the
         flow_rule_match_key() interface to check for existing selectors
         that are in used in the rule and the flow_rule_match_*()
	 functions to fetch the selector value and the mask. This
	 also introduces the initial flow_rule structure skeleton to
         avoid a follow up patch that would update the same LoCs.

Patch #2 makes changes to packet edit parser of mlx5e driver, to prepare
	 introduction of the new flow_action to mangle packets.

Patch #3 Introduce flow_action infrastructure. This infrastructure is
         based on the TC actions. Patch #8 extends it so it also
         supports two new actions that are only available through the
	 ethtool_rxnfc interface.

Patch #4 Add function to translate TC action to flow_action from
         cls_flower.

Patch #5 Add infrastructure to fetch statistics into container structure
         and synchronize them to TC actions from cls_flower. Another
	 preparation patch before patch #7, so we can stop exposing the
         TC action native layout to the drivers.

Patch #6 Use flow_action infrastructure from drivers.

Patch #7 Do not expose TC actions to drivers anymore, now that drivers
	 have been converted to use the flow_action infrastructure after
	 patch #5.

Patch #8 Support to wake-up-on-lan and queue actions for the flow_action
         infrastructure, two actions supported by NICs. This is used by
	 the ethtool_rx_flow interface.

Patch #9 Add a function to translate from ethtool_rx_flow_spec structure
	 to the flow_action structure. This is a simple enough for its
	 first client: the ethtool_rxnfc interface in the bcm_sf2 driver.

Patch #10 Update bcm_sf2 to use this new translator function and
          update codebase to configure hardware IR using the
	  flow_action representation. This will allow later development
	  of cls_flower using the same codebase from the driver.

This patchset has passed here functional tests of the codepath that
generates the flow_rule structure and the functions to implement the
parsers that populate the hardware IR.

Thanks.

Pablo Neira Ayuso (10):
  flow_dissector: add flow_rule and flow_match structures and use them
  net/mlx5e: support for two independent packet edit actions
  flow_dissector: add flow action infrastructure
  cls_api: add translator to flow_action representation
  cls_flower: add statistics retrieval infrastructure and use it
  drivers: net: use flow action infrastructure
  cls_flower: don't expose TC actions to drivers anymore
  flow_dissector: add wake-up-on-lan and queue to flow_action
  flow_dissector: add basic ethtool_rx_flow_spec to flow_rule structure translator
  dsa: bcm_sf2: use flow_rule infrastructure

 drivers/net/dsa/bcm_sf2_cfp.c                      | 103 ++-
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c       | 252 +++----
 .../net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c   | 450 ++++++-------
 drivers/net/ethernet/intel/i40e/i40e_main.c        | 178 ++---
 drivers/net/ethernet/intel/iavf/iavf_main.c        | 195 +++---
 drivers/net/ethernet/intel/igb/igb_main.c          |  64 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c    | 743 ++++++++++-----------
 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c |   2 +-
 .../net/ethernet/mellanox/mlxsw/spectrum_flower.c  | 259 ++++---
 drivers/net/ethernet/netronome/nfp/flower/action.c | 196 +++---
 drivers/net/ethernet/netronome/nfp/flower/match.c  | 416 ++++++------
 .../net/ethernet/netronome/nfp/flower/offload.c    | 151 ++---
 drivers/net/ethernet/qlogic/qede/qede_filter.c     |  93 ++-
 include/net/flow_dissector.h                       | 185 +++++
 include/net/pkt_cls.h                              |  23 +-
 net/core/flow_dissector.c                          | 341 ++++++++++
 net/sched/cls_api.c                                | 113 ++++
 net/sched/cls_flower.c                             |  42 +-
 18 files changed, 2120 insertions(+), 1686 deletions(-)

-- 
2.11.0

^ permalink raw reply	[flat|nested] 18+ messages in thread

end of thread, other threads:[~2018-11-20  5:29 UTC | newest]

Thread overview: 18+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2018-11-16  1:41 [PATCH 00/10] add flow_rule infrastructure Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 01/10] flow_dissector: add flow_rule and flow_match structures and use them Pablo Neira Ayuso
2018-11-18  4:32   ` David Miller
2018-11-16  1:41 ` [PATCH 02/10] net/mlx5e: support for two independent packet edit actions Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 03/10] flow_dissector: add flow action infrastructure Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 04/10] cls_api: add translator to flow_action representation Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 05/10] cls_flower: add statistics retrieval infrastructure and use it Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 06/10] drivers: net: use flow action infrastructure Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 07/10] cls_flower: don't expose TC actions to drivers anymore Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 08/10] flow_dissector: add wake-up-on-lan and queue to flow_action Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 09/10] flow_dissector: add basic ethtool_rx_flow_spec to flow_rule structure translator Pablo Neira Ayuso
2018-11-16  1:41 ` [PATCH 10/10] dsa: bcm_sf2: use flow_rule infrastructure Pablo Neira Ayuso
2018-11-18  4:32   ` David Miller
2018-11-16 10:29 ` [PATCH 00/10] add " Or Gerlitz
2018-11-18  5:14   ` David Miller
2018-11-19  9:19 ` Chopra, Manish
2018-11-19  9:57   ` Jiri Pirko
2018-11-19 19:04     ` Florian Fainelli

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