[dpdk-dev] [PATCH v2 0/9] support SubFunction representor

Xueming Li xuemingl at nvidia.com
Wed Jan 6 17:17:26 CET 2021


SubFunction [1] is a portion of the PCI device, a SF netdev has its own
dedicated queues(txq, rxq). A SF netdev supports eswitch representation
offload similar to existing PF and VF representors. A SF shares PCI
level resources with other SFs and/or with its parent PCI function.

>From SmartNIC perspective, when PCI device is shared for multi-host,
representors for host controller and host PF is required.

This patch set introduces new representor types in addtion to existing
VF representor. Syntax:

[[c#]pf#]vf#: VF port representor/s from controller/pf
[[c#]pf#]sf#: SF port representor/s from controller/pf
#: VF representor - for backwards compatibility

"#" is number instance, list or range, valid examples:
  1, [1,3,5], [0-3], [0,2-4,6]

For backward compatibility, this patch also introduces new netdev
capability
to indicate the capability to support SF representor.

Version history:
 RFC:
 	initial version [2]
 V2:
    - separate patch for represnetor infrastructure, controller, pf and
      sf.
    - replace representor ID macro with functions:
      rte_eth_representor_id_encode()
      rte_eth_representor_id_parse()
    - new patch to allow devargs with same PCI BDF but different
      representors.
    - other minor code updates according to comments, thanks Andrew!
    - update document

[1] SubFunction in kernel:
https://lore.kernel.org/netdev/20201112192424.2742-1-parav@nvidia.com/

[2] RFC:
http://patchwork.dpdk.org/project/dpdk/list/?series=14376

Xueming Li (9):
  ethdev: refactor representor infrastructure
  ethdev: support new VF representor syntax
  ethdev: support sub function representor
  ethdev: support PF index in representor
  ethdev: support multi-host representor
  devarg: change reprsentor ID to bitmap
  ethdev: capability of new representor syntax
  kvargs: update parser for new representor syntax
  eal: allow PCI device with different representors

 config/rte_config.h                      |   1 +
 doc/guides/prog_guide/poll_mode_drv.rst  |   8 +-
 drivers/net/bnxt/bnxt_ethdev.c           |  12 +++
 drivers/net/bnxt/bnxt_reps.c             |   3 +-
 drivers/net/enic/enic_ethdev.c           |   7 ++
 drivers/net/enic/enic_vf_representor.c   |   3 +-
 drivers/net/i40e/i40e_ethdev.c           |   8 ++
 drivers/net/i40e/i40e_vf_representor.c   |   3 +-
 drivers/net/ixgbe/ixgbe_ethdev.c         |   8 ++
 drivers/net/ixgbe/ixgbe_vf_representor.c |   3 +-
 drivers/net/mlx5/linux/mlx5_os.c         |  15 ++-
 lib/librte_eal/common/eal_common_bus.c   |  25 +++++
 lib/librte_ethdev/ethdev_private.c       | 128 ++++++++++++++---------
 lib/librte_ethdev/ethdev_private.h       |   3 -
 lib/librte_ethdev/rte_class_eth.c        |  40 +++++--
 lib/librte_ethdev/rte_ethdev.c           |  31 +++++-
 lib/librte_ethdev/rte_ethdev.h           |   2 +
 lib/librte_ethdev/rte_ethdev_driver.h    |  64 ++++++++++++
 lib/librte_ethdev/version.map            |   2 +
 lib/librte_kvargs/rte_kvargs.c           |  83 ++++++++++-----
 20 files changed, 348 insertions(+), 101 deletions(-)

-- 
2.25.1



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