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Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/1716932066-3342-1-git-send-email-Tristram.Ha@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-17net: dsa: microchip: Correct initialization order for KSZ88x3 portsOleksij Rempel1-0/+10 Adjust the initialization sequence of KSZ88x3 switches to enable 802.1p priority control on Port 2 before configuring Port 1. This change ensures the apptrust functionality on Port 1 operates correctly, as it depends on the priority settings of Port 2. The prior initialization sequence incorrectly configured Port 1 first, which could lead to functional discrepancies. Fixes: a1ea57710c9d ("net: dsa: microchip: dcb: add special handling for KSZ88X3 family") Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Hariprasad Kelam <hkelam@marvell.com> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Link: https://lore.kernel.org/r/20240517050121.2174412-1-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-13net: dsa: microchip: dcb: set default apptrust to PCP onlyOleksij Rempel1-18/+3 Before DCB support, the KSZ driver had only PCP as source of packet priority values. To avoid regressions, make PCP only as default value. User will need enable DSCP support manually. This patch do not affect other KSZ8 related quirks. User will still be warned by setting not support configurations for the port 2. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240510053828.2412516-4-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-13net: dsa: microchip: dcb: add comments for DSCP related functionsOleksij Rempel1-0/+31 All other functions are commented. Add missing comments to following functions: ksz_set_global_dscp_entry() ksz_port_add_dscp_prio() ksz_port_del_dscp_prio() Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240510053828.2412516-3-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-13net: dsa: microchip: dcb: rename IPV to IPMOleksij Rempel3-51/+51 IPV is added and used term in 802.1Qci PSFP and merged into 802.1Q (from 802.1Q-2018) for another functions. Even it does similar operation holding temporal priority value internally (as it is named), because KSZ datasheet doesn't use the term of IPV (Internal Priority Value) and avoiding any confusion later when PSFP is in the Linux world, it is better to rename IPV to IPM (Internal Priority Mapping). In addition, LAN937x documentation already use IPV for 802.1Qci PSFP related functionality. Suggested-by: Woojung Huh <Woojung.Huh@microchip.com> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Woojung Huh <woojung.huh@microchip.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240510053828.2412516-2-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-10net: dsa: microchip: Fix spellig mistake "configur" -> "configure"Colin Ian King1-1/+1 There is a spelling mistake in a dev_err message. Fix it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240509065023.3033397-1-colin.i.king@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2024-05-08net: dsa: microchip: add support DSCP priority mappingOleksij Rempel3-15/+50 Microchip KSZ and LAN variants do not have per port DSCP priority configuration. Instead there is a global DSCP mapping table. This patch provides write access to this global DSCP map. In case entry is "deleted", we map corresponding DSCP entry to a best effort prio, which is expected to be the default priority for all untagged traffic. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net> 2024-05-08net: dsa: microchip: let DCB code do PCP and DSCP policy configurationOleksij Rempel2-12/+0 802.1P (PCP) and DiffServ (DSCP) are handled now by DCB code. Let it do all needed initial configuration. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2024-05-08net: dsa: microchip: init predictable IPV to queue mapping for all non ↵Oleksij Rempel1-24/+33 KSZ8xxx variants Init priority to queue mapping in the way as it shown in IEEE 802.1Q mapping example. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2024-05-08net: dsa: microchip: enable ETS support for KSZ989X variantsOleksij Rempel2-12/+1 I tested ETS support on KSZ9893, so it should work other KSZ989X variants too, which was till not listed as support. With this change we now officially not support only ksz8 family of chips. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2024-05-08net: dsa: microchip: dcb: add special handling for KSZ88X3 familyOleksij Rempel4-3/+242 KSZ88X3 switches have different behavior on different ports: - It seems to be not possible to disable VLAN PCP classification on port 2. It means, as soon as mutliqueue support is enabled, frames with VLAN tag will get PCP prios. This behavior do not affect Port 1 - it is possible to disable PCP prios. - DSCP classification is not working on Port 2. Since there are still usable configuration combinations, I added some quirks to make sure user will get appropriate error message if not possible configuration is chosen. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net> 2024-05-08net: dsa: microchip: add support for different DCB app configurationsOleksij Rempel6-2/+583