net: lan966x: Add lag support

From:		Horatiu Vultur <horatiu.vultur-AT-microchip.com>
To:		<linux-kernel-AT-vger.kernel.org>, <netdev-AT-vger.kernel.org>
Subject:		[PATCH net-next v3 0/7] net: lan966x: Add lag support
Date:		Fri, 01 Jul 2022 22:52:20 +0200
Message-ID:		<20220701205227.1337160-1-horatiu.vultur@microchip.com>
Cc:		<UNGLinuxDriver-AT-microchip.com>, <davem-AT-davemloft.net>, <edumazet-AT-google.com>, <kuba-AT-kernel.org>, <pabeni-AT-redhat.com>, <vladimir.oltean-AT-nxp.com>, Horatiu Vultur <horatiu.vultur-AT-microchip.com>
Archive-link:		Article

Add lag support for lan966x.
First 4 patches don't do any changes to the current behaviour, they
just prepare for lag support. While the rest is to add the lag support.

v2->v3:
- return error code from 'switchdev_bridge_port_offload()'
- fix lan966x_foreign_dev_check(), it was missing lag support
- remove lan966x_lag_mac_add_entry and lan966x_mac_del_entry as
  they are not needed
- fix race conditions when accessing port->bond
- move FDB entries when a new port joins the lag if it has a lower

v1->v2:
- fix the LAG PGIDs when ports go down, in this way is not
  needed anymore the last patch of the series.

Horatiu Vultur (7):
  net: lan966x: Add reqisters used to configure lag interfaces
  net: lan966x: Split lan966x_fdb_event_work
  net: lan966x: Expose lan966x_switchdev_nb and
    lan966x_switchdev_blocking_nb
  net: lan966x: Extend lan966x_foreign_bridging_check
  net: lan966x: Add lag support for lan966x.
  net: lan966x: Extend FDB to support also lag
  net: lan966x: Extend MAC to support also lag interfaces.

 .../net/ethernet/microchip/lan966x/Makefile   |   2 +-
 .../ethernet/microchip/lan966x/lan966x_fdb.c  | 155 +++++---
 .../ethernet/microchip/lan966x/lan966x_lag.c  | 335 ++++++++++++++++++
 .../ethernet/microchip/lan966x/lan966x_mac.c  |  66 +++-
 .../ethernet/microchip/lan966x/lan966x_main.h |  38 ++
 .../ethernet/microchip/lan966x/lan966x_regs.h |  45 +++
 .../microchip/lan966x/lan966x_switchdev.c     | 137 +++++--
 7 files changed, 680 insertions(+), 98 deletions(-)
 create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_lag.c

-- 
2.33.0