[PATCH v3 00/34] net/sfc: support HW conntrack assistance

[Andrew Rybchenko]

On 6/5/23 02:24, Ivan Malov wrote:
> On EF100 hardware, match-action engine (MAE) can be equipped
> with an assistance table for connection tracking (CT). In it,
> an entry key is a set of exact match fields: an EtherType, a
> pair of IP addresses, a L4 protocol ID and a pair of L4 port
> numbers. An entry response can provide matching packets with
> a mark value and additional data to be plumbed to NAT action.
> In addition, an update to mark-and-sweep counter can be done.
> 
> This table was designed with larger capacity in mind,
> so moving the above match criteria out of an action
> rule (AR) specification to a CT entry increases the
> likelihood of reusing AR entries and improves the
> total flow engine capacity. Make use of that.
> 
> Changes in v2:
> * Found and fixed my own mistake in [15/34]
> * Fixed [16/34] as per 0-day robot report
> * Added missing release notes to [27/34]
> * Added missing release notes to [30/34]
> 
> Changes in v3:
> * Fixed release notes in [27/34]
> * Rebased on dpdk to fix CI
> 
> Denis Pryazhennikov (11):
>    common/sfc_efx/base: update MCDI headers
>    common/sfc_efx/base: detect MCDI Table Access API support
>    common/sfc_efx/base: add API to list HW tables
>    common/sfc_efx/base: add macro to get indexed QWORD field
>    common/sfc_efx/base: add API to get HW table desc
>    common/sfc_efx/base: add API to insert data to HW table
>    common/sfc_efx/base: add API to delete entry from HW table
>    net/sfc: add MCDI wrappers for BCAM tables
>    net/sfc: add functions to manipulate MCDI table fields
>    net/sfc: attach to HW table API
>    net/sfc: add API to manage HW Conntrack table
> 
> Ivan Malov (23):
>    net/sfc: make entry pointer optional in MAE resource helpers
>    net/sfc: turn flow create/destroy methods into lock wrappers
>    net/sfc: let driver-internal flows use VF representor action
>    net/sfc: extend generic flow API to allow for internal flows
>    net/sfc: switch driver-internal flows to use generic methods
>    net/sfc: move MAE flow parsing method to MAE-specific source
>    net/sfc: move MAE counter stream start to action set handler
>    net/sfc: prepare MAE outer rules for action rule indirection
>    net/sfc: turn MAE flow action rules into shareable resources
>    common/sfc_efx/base: provide an API to clone MAE match specs
>    common/sfc_efx/base: add API to read back MAE match criteria
>    common/sfc_efx/base: match on conntrack mark in action rules
>    common/sfc_efx/base: add API to request MAE conntrack lookup
>    net/sfc: make use of conntrack assistance for transfer flows
>    common/sfc_efx/base: support NAT edits in MAE
>    net/sfc: add support for IPv4 NAT offload to MAE backend
>    net/sfc: rename SW structures used by transfer flow counters
>    net/sfc: rework MAE action rule counter representation in SW
>    net/sfc: support indirect count action in transfer flows
>    common/sfc_efx/base: rework MAE counter provisioning helpers
>    net/sfc: indicate MAE counter type in use for transfer flows
>    common/sfc_efx/base: support conntrack assistance counters
>    net/sfc: use conntrack assistance counters in transfer flows
> 
>   doc/guides/nics/features/sfc.ini            |    4 +
>   doc/guides/nics/sfc_efx.rst                 |   10 +
>   doc/guides/rel_notes/release_23_07.rst      |   18 +
>   drivers/common/sfc_efx/base/efx.h           |  198 +-
>   drivers/common/sfc_efx/base/efx_impl.h      |    5 +-
>   drivers/common/sfc_efx/base/efx_mae.c       |  383 ++-
>   drivers/common/sfc_efx/base/efx_mcdi.h      |    4 +
>   drivers/common/sfc_efx/base/efx_regs_mcdi.h | 2557 ++++++++++++++++++-
>   drivers/common/sfc_efx/base/efx_table.c     |  506 ++++
>   drivers/common/sfc_efx/base/hunt_nic.c      |    2 +
>   drivers/common/sfc_efx/base/medford2_nic.c  |    2 +
>   drivers/common/sfc_efx/base/medford_nic.c   |    2 +
>   drivers/common/sfc_efx/base/meson.build     |    1 +
>   drivers/common/sfc_efx/base/rhead_nic.c     |    9 +
>   drivers/common/sfc_efx/base/siena_nic.c     |    2 +
>   drivers/common/sfc_efx/version.map          |   14 +
>   drivers/net/sfc/meson.build                 |    6 +-
>   drivers/net/sfc/sfc.c                       |   27 +-
>   drivers/net/sfc/sfc.h                       |    3 +
>   drivers/net/sfc/sfc_flow.c                  |  246 +-
>   drivers/net/sfc/sfc_flow.h                  |   45 +-
>   drivers/net/sfc/sfc_mae.c                   | 1899 ++++++++++----
>   drivers/net/sfc/sfc_mae.h                   |  131 +-
>   drivers/net/sfc/sfc_mae_counter.c           |  146 +-
>   drivers/net/sfc/sfc_mae_counter.h           |   16 +-
>   drivers/net/sfc/sfc_mae_ct.c                |  201 ++
>   drivers/net/sfc/sfc_mae_ct.h                |   68 +
>   drivers/net/sfc/sfc_repr.c                  |   20 +-
>   drivers/net/sfc/sfc_repr_proxy.c            |   53 +-
>   drivers/net/sfc/sfc_repr_proxy.h            |    2 +-
>   drivers/net/sfc/sfc_repr_proxy_api.h        |    3 +
>   drivers/net/sfc/sfc_switch.c                |    7 +-
>   drivers/net/sfc/sfc_switch.h                |   10 +
>   drivers/net/sfc/sfc_tbl_meta.c              |   71 +
>   drivers/net/sfc/sfc_tbl_meta.h              |   37 +
>   drivers/net/sfc/sfc_tbl_meta_cache.c        |  253 ++
>   drivers/net/sfc/sfc_tbl_meta_cache.h        |   25 +
>   drivers/net/sfc/sfc_tbls.c                  |  200 ++
>   drivers/net/sfc/sfc_tbls.h                  |  285 +++
>   39 files changed, 6601 insertions(+), 870 deletions(-)
>   create mode 100644 drivers/common/sfc_efx/base/efx_table.c
>   create mode 100644 drivers/net/sfc/sfc_mae_ct.c
>   create mode 100644 drivers/net/sfc/sfc_mae_ct.h
>   create mode 100644 drivers/net/sfc/sfc_tbl_meta.c
>   create mode 100644 drivers/net/sfc/sfc_tbl_meta.h
>   create mode 100644 drivers/net/sfc/sfc_tbl_meta_cache.c
>   create mode 100644 drivers/net/sfc/sfc_tbl_meta_cache.h
>   create mode 100644 drivers/net/sfc/sfc_tbls.c
>   create mode 100644 drivers/net/sfc/sfc_tbls.h
> 

With minor notes on some patches fixed

Series-acked-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>