[net-next v8 4/7] net: mtip: The L2 switch driver for imx287

[Jakub Kicinski]

On Mon, 28 Apr 2025 09:44:21 +0200 Lukasz Majewski wrote:
> This patch series provides support for More Than IP L2 switch embedded
> in the imx287 SoC.
> 
> This is a two port switch (placed between uDMA[01] and MAC-NET[01]),
> which can be used for offloading the network traffic.
> 
> It can be used interchangeably with current FEC driver - to be more
> specific: one can use either of it, depending on the requirements.
> 
> The biggest difference is the usage of DMA - when FEC is used, separate
> DMAs are available for each ENET-MAC block.
> However, with switch enabled - only the DMA0 is used to send/receive data
> to/form switch (and then switch sends them to respecitive ports).
> 
> Signed-off-by: Lukasz Majewski <lukma at denx.de>
> Reviewed-by: Stefan Wahren <wahrenst at gmx.net>
> Reviewed-by: Andrew Lunn <andrew at lunn.ch>

Linking fails with allmodconfig

ERROR: modpost: missing MODULE_LICENSE() in drivers/net/ethernet/freescale/mtipsw/mtipl2sw_mgnt.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/ethernet/freescale/mtipsw/mtipl2sw_mgnt.o
ERROR: modpost: missing MODULE_LICENSE() in drivers/net/ethernet/freescale/mtipsw/mtipl2sw_br.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/ethernet/freescale/mtipsw/mtipl2sw_br.o
ERROR: modpost: "mtip_forced_forward" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_port_learning_config" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_port_blocking_config" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_port_enable_config" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_port_broadcast_config" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_port_multicast_config" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_switch_en_port_separation" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_register_notifiers" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_unregister_notifiers" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw.ko] undefined!
ERROR: modpost: "mtip_is_switch_netdev_port" [drivers/net/ethernet/freescale/mtipsw/mtipl2sw_br.ko] undefined!
WARNING: modpost: suppressed 3 unresolved symbol warnings because there were too many)