[dpdk-dev] [PATCH v5 0/9] ethdev: support SubFunction representor

Xueming Li xuemingl at nvidia.com
Tue Jan 19 08:13:25 CET 2021


dedicated queues(txq, rxq). A SF netdev supports E-Switch 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 of supportting 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
 V3:
    - improve probing of allowed devargs with same name.
    - parse single word of kvargs as key. 
    - update kvargs test cases.
 V4:
    - split first representor refactor patch into
      1: add representor type
      2: refector representor list parsing
    - push the patch supporting multi-devargs for same device.
 V5:
    - add comments for parsing functions
    - update switch_representation.rst - Thanks Ajit



[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

[3] V2:
http://patchwork.dpdk.org/project/dpdk/list/?series=14559

[4] V3:
1 http://patchwork.dpdk.org/patch/86460/
2 http://patchwork.dpdk.org/patch/86461/
3 http://patchwork.dpdk.org/patch/86462/
4 http://patchwork.dpdk.org/patch/86463/
5 http://patchwork.dpdk.org/patch/86464/
6 http://patchwork.dpdk.org/patch/86465/
7 http://patchwork.dpdk.org/patch/86467/
8 http://patchwork.dpdk.org/patch/86466/
9 http://patchwork.dpdk.org/patch/86468/

[5] V4:
http://patchwork.dpdk.org/project/dpdk/list/?series=14809

Xueming Li (9):
  ethdev: introduce representor type
  ethdev: support representor port list
  ethdev: support new VF representor syntax
  ethdev: support sub function representor
  ethdev: support PF index in representor
  ethdev: support multi-host in representor
  devarg: change representor ID to bitmap
  ethdev: add capability of sub-function representor
  kvargs: update parser to support lists

 app/test/test_kvargs.c                        |  46 +++++-
 config/rte_config.h                           |   1 +
 doc/guides/prog_guide/poll_mode_drv.rst       |  13 +-
 .../prog_guide/switch_representation.rst      |  35 ++--
 drivers/net/bnxt/bnxt_ethdev.c                |   7 +
 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_ethdev/ethdev_private.c            | 154 ++++++++++++------
 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         |  66 ++++++++
 lib/librte_ethdev/version.map                 |   2 +
 lib/librte_kvargs/rte_kvargs.c                | 101 ++++++++----
 21 files changed, 428 insertions(+), 123 deletions(-)

-- 
2.25.1



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