Re: [net-next PATCH v11 03/11] octeontx2-pf: Create representor netdev

Adds initial devlink support to set/get the switchdev mode.
Representor netdevs are created for each rvu devices when
the switch mode is set to 'switchdev'. These netdevs are
be used to control and configure VFs.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
---
.../ethernet/marvell/octeontx2.rst            |  53 ++++++
.../marvell/octeontx2/nic/otx2_devlink.c      |  49 ++++++
.../net/ethernet/marvell/octeontx2/nic/rep.c  | 165 ++++++++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.h  |   3 +
4 files changed, 270 insertions(+)

diff --git a/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst b/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
index 1e196cb9ce25..1132ae2d007c 100644
--- a/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
+++ b/Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst

@@ -14,6 +14,7 @@ Contents
- `Basic packet flow`_
- `Devlink health reporters`_
- `Quality of service`_
+- `RVU representors`_

Overview
========

@@ -340,3 +341,55 @@ Setup HTB offload
        # tc class add dev <interface> parent 1: classid 1:2 htb rate 10Gbit prio 2 quantum 188416

        # tc class add dev <interface> parent 1: classid 1:3 htb rate 10Gbit prio 2 quantum 32768
+
+
+RVU Representors
+================
+
+RVU representor driver adds support for creation of representor devices for
+RVU PFs' VFs in the system. Representor devices are created when user enables
+the switchdev mode.
+Switchdev mode can be enabled either before or after setting up SRIOV numVFs.
+All representor devices share a single NIXLF but each has a dedicated queue
+(ie RQ/SQ. RVU PF representor driver registers a separate netdev for each
+RQ/SQ queue pair.
+
+HW doesn't have a in-built switch which can do L2 learning and forward pkts
+between representee and representor. Hence packet path between representee
+and it's representor is achieved by setting up appropriate NPC MCAM filters.