[RFC,0/7] support SubFunction representor

  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 flexibility, this patch also introduces new netdev capability
to indicate the capability to support new representor types.

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



Xueming Li (7):
  ethdev: support sub function representor
  ethdev: support multi-host representor
  devarg: change reprsentor ID to bitmap
  ethdev: capability for new representor syntax
  kvargs: update parser for new representor syntax
  common/mlx5: update representor name parsing
  net/mlx5: support representor of sub function

 0000-cover-letter.patch                    |  44 ++++++
 config/rte_config.h                        |   1 +
 drivers/common/mlx5/linux/mlx5_common_os.c |  32 ++--
 drivers/common/mlx5/linux/mlx5_nl.c        |   2 +
 drivers/common/mlx5/mlx5_common.h          |   2 +
 drivers/net/mlx5/linux/mlx5_ethdev_os.c    |   5 +
 drivers/net/mlx5/linux/mlx5_os.c           |  69 ++++++++-
 drivers/net/mlx5/mlx5_ethdev.c             |   2 +
 lib/librte_ethdev/ethdev_private.c         | 164 ++++++++++++++-------
 lib/librte_ethdev/ethdev_private.h         |   3 -
 lib/librte_ethdev/rte_class_eth.c          |   7 +-
 lib/librte_ethdev/rte_ethdev.c             |   5 +-
 lib/librte_ethdev/rte_ethdev.h             |   2 +
 lib/librte_ethdev/rte_ethdev_driver.h      |  35 +++++
 lib/librte_kvargs/rte_kvargs.c             |  82 +++++++----
 15 files changed, 351 insertions(+), 104 deletions(-)
 create mode 100644 0000-cover-letter.patch