[PATCH net-next v3 0/5] net: sparx5: add support for port mirroring

[Daniel Machon]

This series adds support for port mirroring, and port mirroring stats,
through tc matchall action FLOW_ACTION_MIRRED.

The hardware has three independent mirroring probes. Each probe can be
configured with a separate set of filtering conditions that must be
fulfilled before traffic is mirrored.

A mirror probe can have up to 64 source ports and a single monitor port.
The direction of a mirror probe determines if rx or tx traffic is
mirrored from the source port to the monitor port.

To: David S. Miller <davem at davemloft.net>
To: Eric Dumazet <edumazet at google.com>
To: Jakub Kicinski <kuba at kernel.org>
To: Paolo Abeni <pabeni at redhat.com>
To: Lars Povlsen <lars.povlsen at microchip.com>
To: Steen Hegelund <Steen.Hegelund at microchip.com>
To: UNGLinuxDriver at microchip.com
To: Russell King <linux at armlinux.org.uk>
Cc: netdev at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Cc: Horatiu Vultur <horatiu.vultur at microchip.com>
Cc: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
Cc: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
Cc: Vladimir Oltean <vladimir.oltean at nxp.com>
Cc: Yue Haibing <yuehaibing at huawei.com>

Signed-off-by: Daniel Machon <daniel.machon at microchip.com>
---
Changes in v3:
- Ditch do_div() (patch #3) to fix warning on hexagon arch, reported by intel bot
- Link to v2: https://lore.kernel.org/r/20240418-port-mirroring-v2-0-20642868b386@microchip.com

Changes in v2:
- Fix clang build warning about uninitialized variable 'err'
- Link to v1: https://lore.kernel.org/r/20240418-port-mirroring-v1-0-e05c35007c55@microchip.com

---
Daniel Machon (5):
      net: sparx5: add new register definitions
      net: sparx5: add bookkeeping code for matchall rules
      net: sparx5: add port mirroring implementation
      net: sparx5: add the tc glue to support port mirroring
      net: sparx5: add support for matchall mirror stats

 drivers/net/ethernet/microchip/sparx5/Makefile     |   3 +-
 .../net/ethernet/microchip/sparx5/sparx5_main.c    |   3 +
 .../net/ethernet/microchip/sparx5/sparx5_main.h    |  25 +++
 .../ethernet/microchip/sparx5/sparx5_main_regs.h   |  68 ++++++
 .../net/ethernet/microchip/sparx5/sparx5_mirror.c  | 235 +++++++++++++++++++++
 .../ethernet/microchip/sparx5/sparx5_tc_matchall.c | 125 ++++++++++-
 6 files changed, 449 insertions(+), 10 deletions(-)
---
base-commit: 1c25fe9a044d5334153a3585754b26553f8287b9
change-id: 20240402-port-mirroring-81735171ecfa

Best regards,
-- 
Daniel Machon <daniel.machon at microchip.com>