[net-next PATCH v11 00/11] Introduce RVU representors

[Geetha sowjanya <gakula@marvell.com>]

This series adds representor support for each rvu devices.
When switchdev mode is enabled, representor netdev is registered
for each rvu device. In implementation of representor model, 
one NIX HW LF with multiple SQ and RQ is reserved, where each
RQ and SQ of the LF are mapped to a representor. A loopback channel
is reserved to support packet path between representors and VFs.
CN10K silicon supports 2 types of MACs, RPM and SDP. This
patch set adds representor support for both RPM and SDP MAC
interfaces.

- Patch 1: Refactors and exports the shared service functions.
- Patch 2: Implements basic representor driver.
- Patch 3: Add devlink support to create representor netdevs that
  can be used to manage VFs.
- Patch 4: Implements basec netdev_ndo_ops.
- Patch 5: Installs tcam rules to route packets between representor and
	   VFs.
- Patch 6: Enables fetching VF stats via representor interface
- Patch 7: Adds support to sync link state between representors and VFs .
- Patch 8: Enables configuring VF MTU via representor netdevs.
- Patch 9: Add representors for sdp MAC.
- Patch 10: Add devlink port support.


Command to create PF/VF representor
#devlink dev eswitch set pci/0002:1c:00.0 mode switchdev

VF representors are created for each VF when switch mode is set switchdev on
representor PCI device. Each PF support upto 3VFs. Representor can be created
before or after the VFs creation. 

#devlink dev
pci/0002:1c:00.0

#devlink dev eswitch set pci/0002:1c:00.0 mode switchdev

# ip link show
	pf1vf0rep: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 7e:5a:66:ea:fe:d6 brd ff:ff:ff:ff:ff:ff
	pf1vf1rep: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether de:29:be:10:9e:bf brd ff:ff:ff:ff:ff:ff
	pf1vf2rep: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 4a:12:c7:a2:66:ad brd ff:ff:ff:ff:ff:ff
	pf1vf3rep: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether c2:b8:a8:0e:73:fd brd ff:ff:ff:ff:ff:ff


~# devlink port
pci/0002:1c:00.0/0: type eth netdev pf1vf0rep flavour physical port 1 splittable false
pci/0002:1c:00.0/1: type eth netdev pf1vf1rep flavour pcivf controller 0 pfnum 1 vfnum 1 external false splittable false
pci/0002:1c:00.0/2: type eth netdev pf1vf2rep flavour pcivf controller 0 pfnum 1 vfnum 2 external false splittable false
pci/0002:1c:00.0/3: type eth netdev pf1vf3rep flavour pcivf controller 0 pfnum 1 vfnum 3 external false splittable false

-----------
v1-v2:
 -Fixed build warnings.
 -Address review comments provided by "Kalesh Anakkur Purayil".

v2-v3:
 - Used extack for error messages.
 - As suggested reworked commit messages.
 - Fixed sparse warning.

v3-v4: 
 - Patch 2 & 3: Fixed coccinelle reported warnings.
 - Patch 10: Added devlink port support.

v4-v5:
  - Patch 3: Removed devm_* usage in rvu_rep_create()
  - Patch 3: Fixed build warnings.

v5-v6:
  - Addressed review comments provided by "Simon Horman".
  - Added review tag. 

v6-v7:
  - Rebased on top net-next branch.

v7-v8:
   - Implemented offload stats ndo.
   - Added documentation.

v8-v9:
   - Updated the documentation.

v9-v10:
  - Fixed build warning w.r.t documentation.

v10-v11:
  - As suggested by "Jiri Pirko" adjusted the documentation.
  - Added more commit description to patch1. 

Geetha sowjanya (11):
  octeontx2-pf: Refactoring RVU driver
  octeontx2-pf: RVU representor driver
  octeontx2-pf: Create representor netdev
  octeontx2-pf: Add basic net_device_ops
  octeontx2-af: Add packet path between representor and VF
  octeontx2-pf: Get VF stats via representor
  octeontx2-pf: Add support to sync link state between representor and
    VFs
  octeontx2-pf: Configure VF mtu via representor
  octeontx2-pf: Add representors for sdp MAC
  octeontx2-pf: Add devlink port support
  octeontx2-pf: Implement offload stats ndo for representors

 .../ethernet/marvell/octeontx2.rst            |  85 ++
 .../net/ethernet/marvell/octeontx2/Kconfig    |   8 +
 .../ethernet/marvell/octeontx2/af/Makefile    |   3 +-
 .../ethernet/marvell/octeontx2/af/common.h    |   2 +
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  74 ++
 .../net/ethernet/marvell/octeontx2/af/npc.h   |   1 +
 .../net/ethernet/marvell/octeontx2/af/rvu.c   |  11 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  30 +-
 .../marvell/octeontx2/af/rvu_debugfs.c        |  27 -
 .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  81 +-
 .../marvell/octeontx2/af/rvu_npc_fs.c         |   5 +
 .../ethernet/marvell/octeontx2/af/rvu_reg.h   |   4 +
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 464 +++++++++++
 .../marvell/octeontx2/af/rvu_struct.h         |  26 +
 .../marvell/octeontx2/af/rvu_switch.c         |  20 +-
 .../ethernet/marvell/octeontx2/nic/Makefile   |   2 +
 .../ethernet/marvell/octeontx2/nic/cn10k.c    |   4 +-
 .../ethernet/marvell/octeontx2/nic/cn10k.h    |   2 +-
 .../marvell/octeontx2/nic/otx2_common.c       |  58 +-
 .../marvell/octeontx2/nic/otx2_common.h       |  84 +-
 .../marvell/octeontx2/nic/otx2_devlink.c      |  49 ++
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  | 305 ++++---
 .../marvell/octeontx2/nic/otx2_txrx.c         |  38 +-
 .../marvell/octeontx2/nic/otx2_txrx.h         |   3 +-
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  |  19 +-
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 744 ++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  |  53 ++
 28 files changed, 1981 insertions(+), 227 deletions(-)
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h

-- 
2.25.1