Hi Andrew, On 18/09/23 6:31 pm, Andrew Lunn wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > >>>> +#define MAX_ETH_LEN 1536 >>> >>> Where do 1536 come from? Maybe this needs an OA_TC6 prefix to make it >>> clear this is specific to this protocol? >> Ah it is a mistake. It is supposed to be an ethernet packet size which >> is 1518 (1500 bytes MTU size + 18 bytes overhead) and it is not from OA. >> It is a mistake and will correct it in the next version. > > Please try to express this using ETH_DATA_LEN + sizeof(struct > oa_tc6_overhead). Doing it like this will avoid errors like this since > it is also part documentation. Ok, in my case the define would be, #define MAX_ETH_LEN (ETH_DATA_LEN + ETH_HLEN + ETH_FCS_LEN) Best Regards, Parthiban V > > Andrew