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How to use NDK API to specify the C6678 EMAC port for transmission

Hi Experts,

There are two SGMII ports in C6678, my ctms want to specify the port for transmission. To specify the transmit port for the packet, I think it is need to configure the ALE switch, but I cannot find the NDK API to configure the ALE switch. After going through the MCSDK and PDK NDK examples, I think it is need to call the LLD API such as init_cpsw, right? Would u pls kindly instruct how to achieve it and which API can be used if possible?

Thanks & Best Regards,

Andy